The reset-simple driver can be used without changes.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com>
The reset-simple driver can be used without changes.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Add reset line status readback, inverted status support, and socfpga
device tree quirks to the simple reset driver, and use it to replace
the socfpga driver.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use the newly created copies in the reset-simple driver to replace the
sunxi platform driver code and reset operations. The separate sunxi
driver still remains to register the early reset controllers, but it
reuses the reset operations in reset-simple.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Copy reusable parts from the sunxi driver, to add a driver for simple
reset controllers with reset lines that can be controlled by toggling
bits in exclusive, contiguous register ranges using read-modify-write
cycles under a spinlock.
The following patches will replace compatible reset drivers with
reset-simple, extending it where necessary.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Alexandru Gagniuc <alex.g@adaptrum.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
The if (bank >= REG_COUNT) is not need since already checked
by the default rcdev->of_xlate implementation which guarantees that
id < rcdev->nr_resets.
Suggested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Amlogic GX SoC family embeds alternate registers to drive the reset
levels next to the pulse registers.
This patch adds support for level reset handling on the GX family only.
The Meson8 family has an alternate way to handle level reset.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Add basic reset data for Socionext's new SoC PXs3.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Enable the reset driver to get built for the Stratix10 platform.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The SoCFPGA Stratix10 reset controller has 32-bit registers. Thus, we
cannot use BITS_PER_LONG in computing the register and bit offset. Instead,
we should be using the width of the hardware register for the calculation.
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The HSDK reset driver is only useful when building for an ARC HSDK
platform.
While at it, drop the "default n", as that is the default.
Fixes: e0be864f14 ("ARC: reset: introduce HSDKv1 reset driver")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
[p.zabel@pengutronix.de: rebased, renamed RESET_HSDK_V1 to RESET_HSDK]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
ARC AXS10x boards support custom IP-block which allows to control
reset signals of selected peripherals. For example DW GMAC, etc...
This block is controlled via memory-mapped register (AKA CREG) which
represents up-to 32 reset lines. This regiter is self-clearing so we
don't need to deassert line after reset.
As of today only the following lines are used:
- DW GMAC - line 5
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
There is no plan yet to do a v2 board. And even if we were to do it only
some IPs would actually change, so it be best to add suffixes at that
point, not now !
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This avoids the error:
drivers/reset/reset-hsdk-v1.o: In function `hsdkv1_reset_probe':
/home/thomas/git/linux/drivers/reset/reset-hsdk-v1.c:101: undefined
reference to `devm_ioremap_resource'
collect2: error: ld returned 1 exit status
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for 4.14 for MIPS; below a summary of
the non-merge commits:
CM:
- Rename mips_cm_base to mips_gcr_base
- Specify register size when generating accessors
- Use BIT/GENMASK for register fields, order & drop shifts
- Add cluster & block args to mips_cm_lock_other()
CPC:
- Use common CPS accessor generation macros
- Use BIT/GENMASK for register fields, order & drop shifts
- Introduce register modify (set/clear/change) accessors
- Use change_*, set_* & clear_* where appropriate
- Add CM/CPC 3.5 register definitions
- Use GlobalNumber macros rather than magic numbers
- Have asm/mips-cps.h include CM & CPC headers
- Cluster support for topology functions
- Detect CPUs in secondary clusters
CPS:
- Read GIC_VL_IDENT directly, not via irqchip driver
DMA:
- Consolidate coherent and non-coherent dma_alloc code
- Don't use dma_cache_sync to implement fd_cacheflush
FPU emulation / FP assist code:
- Another series of 14 commits fixing corner cases such as NaN
propgagation and other special input values.
- Zero bits 32-63 of the result for a CLASS.D instruction.
- Enhanced statics via debugfs
- Do not use bools for arithmetic. GCC 7.1 moans about this.
- Correct user fault_addr type
Generic MIPS:
- Enhancement of stack backtraces
- Cleanup from non-existing options
- Handle non word sized instructions when examining frame
- Fix detection and decoding of ADDIUSP instruction
- Fix decoding of SWSP16 instruction
- Refactor handling of stack pointer in get_frame_info
- Remove unreachable code from force_fcr31_sig()
- Convert to using %pOF instead of full_name
- Remove the R6000 support.
- Move FP code from *_switch.S to *_fpu.S
- Remove unused ST_OFF from r2300_switch.S
- Allow platform to specify multiple its.S files
- Add #includes to various files to ensure code builds reliable and
without warning..
- Remove __invalidate_kernel_vmap_range
- Remove plat_timer_setup
- Declare various variables & functions static
- Abstract CPU core & VP(E) ID access through accessor functions
- Store core & VP IDs in GlobalNumber-style variable
- Unify checks for sibling CPUs
- Add CPU cluster number accessors
- Prevent direct use of generic_defconfig
- Make CONFIG_MIPS_MT_SMP default y
- Add __ioread64_copy
- Remove unnecessary inclusions of linux/irqchip/mips-gic.h
GIC:
- Introduce asm/mips-gic.h with accessor functions
- Use new GIC accessor functions in mips-gic-timer
- Remove counter access functions from irq-mips-gic.c
- Remove gic_read_local_vp_id() from irq-mips-gic.c
- Simplify shared interrupt pending/mask reads in irq-mips-gic.c
- Simplify gic_local_irq_domain_map() in irq-mips-gic.c
- Drop gic_(re)set_mask() functions in irq-mips-gic.c
- Remove gic_set_polarity(), gic_set_trigger(), gic_set_dual_edge(),
gic_map_to_pin() and gic_map_to_vpe() from irq-mips-gic.c.
- Convert remaining shared reg access, local int mask access and
remaining local reg access to new accessors
- Move GIC_LOCAL_INT_* to asm/mips-gic.h
- Remove GIC_CPU_INT* macros from irq-mips-gic.c
- Move various definitions to the driver
- Remove gic_get_usm_range()
- Remove __gic_irq_dispatch() forward declaration
- Remove gic_init()
- Use mips_gic_present() in place of gic_present and remove
gic_present
- Move gic_get_c0_*_int() to asm/mips-gic.h
- Remove linux/irqchip/mips-gic.h
- Inline __gic_init()
- Inline gic_basic_init()
- Make pcpu_masks a per-cpu variable
- Use pcpu_masks to avoid reading GIC_SH_MASK*
- Clean up mti, reserved-cpu-vectors handling
- Use cpumask_first_and() in gic_set_affinity()
- Let the core set struct irq_common_data affinity
microMIPS:
- Fix microMIPS stack unwinding on big endian systems
MIPS-GIC:
- SYNC after enabling GIC region
NUMA:
- Remove the unused parent_node() macro
R6:
- Constify r2_decoder_tables
- Add accessor & bit definitions for GlobalNumber
SMP:
- Constify smp ops
- Allow boot_secondary SMP op to return errors
VDSO:
- Drop gic_get_usm_range() usage
- Avoid use of linux/irqchip/mips-gic.h
Platform changes:
Alchemy:
- Add devboard machine type to cpuinfo
- update cpu feature overrides
- Threaded carddetect irqs for devboards
AR7:
- allow NULL clock for clk_get_rate
BCM63xx:
- Fix ENETDMA_6345_MAXBURST_REG offset
- Allow NULL clock for clk_get_rate
CI20:
- Enable GPIO and RTC drivers in defconfig
- Add ethernet and fixed-regulator nodes to DTS
Generic platform:
- Move Boston and NI 169445 FIT image source to their own files
- Include asm/bootinfo.h for plat_fdt_relocated()
- Include asm/time.h for get_c0_*_int()
- Include asm/bootinfo.h for plat_fdt_relocated()
- Include asm/time.h for get_c0_*_int()
- Allow filtering enabled boards by requirements
- Don't explicitly disable CONFIG_USB_SUPPORT
- Bump default NR_CPUS to 16
JZ4700:
- Probe the jz4740-rtc driver from devicetree
Lantiq:
- Drop check of boot select from the spi-falcon driver.
- Drop check of boot select from the lantiq-flash MTD driver.
- Access boot cause register in the watchdog driver through regmap
- Add device tree binding documentation for the watchdog driver
- Add docs for the RCU DT bindings.
- Convert the fpi bus driver to a platform_driver
- Remove ltq_reset_cause() and ltq_boot_select(
- Switch to a proper reset driver
- Switch to a new drivers/soc GPHY driver
- Add an USB PHY driver for the Lantiq SoCs using the RCU module
- Use of_platform_default_populate instead of __dt_register_buses
- Enable MFD_SYSCON to be able to use it for the RCU MFD
- Replace ltq_boot_select() with dummy implementation.
Loongson 2F:
- Allow NULL clock for clk_get_rate
Malta:
- Use new GIC accessor functions
NI 169445:
- Add support for NI 169445 board.
- Only include in 32r2el kernels
Octeon:
- Add support for watchdog of 78XX SOCs.
- Add support for watchdog of CN68XX SOCs.
- Expose support for mips32r1, mips32r2 and mips64r1
- Enable more drivers in config file
- Add support for accessing the boot vector.
- Remove old boot vector code from watchdog driver
- Define watchdog registers for 70xx, 73xx, 78xx, F75xx.
- Make CSR functions node aware.
- Allow access to CIU3 IRQ domains.
- Misc cleanups in the watchdog driver
Omega2+:
- New board, add support and defconfig
Pistachio:
- Enable Root FS on NFS in defconfig
Ralink:
- Add Mediatek MT7628A SoC
- Allow NULL clock for clk_get_rate
- Explicitly request exclusive reset control in the pci-mt7620 PCI driver.
SEAD3:
- Only include in 32 bit kernels by default
VoCore:
- Add VoCore as a vendor t0 dt-bindings
- Add defconfig file"
* '4.14-features' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (167 commits)
MIPS: Refactor handling of stack pointer in get_frame_info
MIPS: Stacktrace: Fix microMIPS stack unwinding on big endian systems
MIPS: microMIPS: Fix decoding of swsp16 instruction
MIPS: microMIPS: Fix decoding of addiusp instruction
MIPS: microMIPS: Fix detection of addiusp instruction
MIPS: Handle non word sized instructions when examining frame
MIPS: ralink: allow NULL clock for clk_get_rate
MIPS: Loongson 2F: allow NULL clock for clk_get_rate
MIPS: BCM63XX: allow NULL clock for clk_get_rate
MIPS: AR7: allow NULL clock for clk_get_rate
MIPS: BCM63XX: fix ENETDMA_6345_MAXBURST_REG offset
mips: Save all registers when saving the frame
MIPS: Add DWARF unwinding to assembly
MIPS: Make SAVE_SOME more standard
MIPS: Fix issues in backtraces
MIPS: jz4780: DTS: Probe the jz4740-rtc driver from devicetree
MIPS: Ci20: Enable RTC driver
watchdog: octeon-wdt: Add support for 78XX SOCs.
watchdog: octeon-wdt: Add support for cn68XX SOCs.
watchdog: octeon-wdt: File cleaning.
...
This branch contains platform-related driver updates for ARM and ARM64.
Among them:
- Reset driver updates:
+ New API for dealing with arrays of resets
+ Make unimplemented {de,}assert return success on shared resets
+ MSDKv1 driver
+ Removal of obsolete Gemini reset driver
+ Misc updates for sunxi and Uniphier
- SoC drivers:
+ Platform SoC driver registration on Tegra
+ Shuffle of Qualcomm drivers into a submenu
+ Allwinner A64 support for SRAM
+ Renesas R-Car R3 support
+ Power domains for Rockchip RK3366
- Misc updates and smaller fixes for TEE and memory driver subsystems
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"This branch contains platform-related driver updates for ARM and ARM64.
Among them:
- Reset driver updates:
+ New API for dealing with arrays of resets
+ Make unimplemented {de,}assert return success on shared resets
+ MSDKv1 driver
+ Removal of obsolete Gemini reset driver
+ Misc updates for sunxi and Uniphier
- SoC drivers:
+ Platform SoC driver registration on Tegra
+ Shuffle of Qualcomm drivers into a submenu
+ Allwinner A64 support for SRAM
+ Renesas R-Car R3 support
+ Power domains for Rockchip RK3366
- Misc updates and smaller fixes for TEE and memory driver
subsystems"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits)
firmware: arm_scpi: fix endianness of dev_id in struct dev_pstate_set
soc/tegra: fuse: Add missing semi-colon
soc/tegra: Restrict SoC device registration to Tegra
drivers: soc: sunxi: add support for A64 and its SRAM C
drivers: soc: sunxi: add support for remapping func value to reg value
drivers: soc: sunxi: fix error processing on base address when claiming
dt-bindings: add binding for Allwinner A64 SRAM controller and SRAM C
bus: sunxi-rsb: Enable by default for ARM64
soc/tegra: Register SoC device
firmware: tegra: set drvdata earlier
memory: Convert to using %pOF instead of full_name
soc: Convert to using %pOF instead of full_name
bus: Convert to using %pOF instead of full_name
firmware: Convert to using %pOF instead of full_name
soc: mediatek: add SCPSYS power domain driver for MediaTek MT7622 SoC
soc: mediatek: add header files required for MT7622 SCPSYS dt-binding
soc: mediatek: reduce code duplication of scpsys_probe across all SoCs
dt-bindings: soc: update the binding document for SCPSYS on MediaTek MT7622 SoC
reset: uniphier: add analog amplifiers reset control
reset: uniphier: add video input subsystem reset control
...
The reset controllers (on xRX200 and newer SoCs have two of them) are
provided by the RCU module. This was initially implemented as a simple
reset controller. However, the RCU module provides more functionality
(ethernet GPHYs, USB PHY, etc.), which makes it a MFD device.
The old reset controller driver implementation from
arch/mips/lantiq/xway/reset.c did not honor this fact.
For some devices the request and the status bits are different.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>
Cc: john@phrozen.org
Cc: kishon@ti.com
Cc: mark.rutland@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-mtd@lists.infradead.org
Cc: linux-watchdog@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-spi@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17125/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add a reset line for analog signal amplifier core (ADAMV) on
UniPhier LD11/LD20 SoCs.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Add a reset line for video input subsystem (EXIV) on
UniPhier LD11/LD20 SoCs.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Allwinner reset controller has 32-bit registers, but resource_size
is measured in bytes, not number of registers.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Chen-Yu Tsai <wens@csie.org>
This macro turned out not so useful as I had expected.
Hardware engineers said they would change reset bit assignments for
every SoC going forward. This means we can not share the macros
among SoCs. Just use primitive macros.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This SoC is too old. It is difficult to maintain any longer.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This reverts commit 2acb037fc4.
We ended up merging the reset controller into the clock
controller so we can now get rid of this stand-alone
implementation.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The HSDK v1 periphery IPs can be reset by accessing some registers
from the CGU block.
The list of available reset lines is documented in the DT bindings.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
By now there are drivers using shared reset controls and (de)assert
calls on platforms with self-deasserting reset lines and thus reset
drivers that do not implement .assert() and .deassert().
As long as the initial state of the reset line is deasserted, there
is no reason for a reset_control_assert call to return an error for
shared reset controls, or for a reset_control_deassert call to return
an error for either shared or exclusive reset controls: after a call
to reset_control_deassert the reset line is guaranteed to be deasserted,
and after a call to reset_control_assert it is valid for the reset
line to stay deasserted for shared reset controls.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Many devices may want to request a bunch of resets and control them. So
it's better to manage them as an array. Add APIs to _get() an array of
reset_control, reusing the _assert(), _deassert(), and _reset() APIs for
single reset controls. Since reset controls already may control multiple
reset lines with a single hardware bit, from the user perspective, reset
control arrays are not at all different from single reset controls.
Note that these APIs don't guarantee that the reset lines managed in the
array are handled in any particular order.
Cc: Felipe Balbi <balbi@kernel.org>
Cc: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
[p.zabel@pengutronix.de: changed API to hide reset control arrays behind
struct reset_control]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
- New SoC specific drivers
- NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later)
based on the "BPMP" firmware
- Clocksource and system controller drivers for the newly added
Action Semi platforms (both arm and arm64).
- Reset subsystem, merged through arm-soc by tradition:
- New drivers for Altera Stratix10, TI Keystone and Cortina Gemini SoCs
- Various subsystem-wide cleanups
- Updates for existing SoC-specific drivers
- TI GPMC (General Purpose Memory Controller)
- Mediatek "scpsys" system controller support for MT6797
- Broadcom "brcmstb_gisb" bus arbitrer
- ARM SCPI firmware
- Renesas "SYSC" system controller
One more driver update was submitted for the Freescale/NXP DPAA
data path acceleration that has previously been used on PowerPC
chips. I ended up postponing the merge until some API questions
for its unusual MMIO access are resolved.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"New SoC specific drivers:
- NVIDIA Tegra PM Domain support for newer SoCs (Tegra186 and later)
based on the "BPMP" firmware
- Clocksource and system controller drivers for the newly added
Action Semi platforms (both arm and arm64).
Reset subsystem, merged through arm-soc by tradition:
- New drivers for Altera Stratix10, TI Keystone and Cortina Gemini
SoCs
- Various subsystem-wide cleanups
Updates for existing SoC-specific drivers
- TI GPMC (General Purpose Memory Controller)
- Mediatek "scpsys" system controller support for MT6797
- Broadcom "brcmstb_gisb" bus arbitrer
- ARM SCPI firmware
- Renesas "SYSC" system controller
One more driver update was submitted for the Freescale/NXP DPAA data
path acceleration that has previously been used on PowerPC chips. I
ended up postponing the merge until some API questions for its unusual
MMIO access are resolved"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
clocksource: owl: Add S900 support
clocksource: Add Owl timer
soc: renesas: rcar-sysc: Use GENPD_FLAG_ALWAYS_ON
firmware: tegra: Fix locking bugs in BPMP
soc/tegra: flowctrl: Fix error handling
soc/tegra: bpmp: Implement generic PM domains
soc/tegra: bpmp: Update ABI header
PM / Domains: Allow overriding the ->xlate() callback
soc: brcmstb: enable drivers for ARM64 and BMIPS
soc: renesas: Rework Kconfig and Makefile logic
reset: Add the TI SCI reset driver
dt-bindings: reset: Add TI SCI reset binding
reset: use kref for reference counting
soc: qcom: smsm: Improve error handling, quiesce probe deferral
cpufreq: scpi: use new scpi_ops functions to remove duplicate code
firmware: arm_scpi: add support to populate OPPs and get transition latency
dt-bindings: reset: Add reset manager offsets for Stratix10
memory: omap-gpmc: add error message if bank-width property is absent
memory: omap-gpmc: make dts snippet include semicolon
reset: Add a Gemini reset controller
...
Some TI Keystone family of SoCs contain a system controller (like the
Power Management Micro Controller (PMMC) on 66AK2G SoCs) that manage
the low-level device control (like clocks, resets etc) for the various
hardware modules present on the SoC. These device control operations
are provided to the host processor OS through a communication protocol
called the TI System Control Interface (TI SCI) protocol.
This patch adds a reset driver that communicates to the system
controller over the TI SCI protocol for performing reset management
of various devices present on the SoC. Various reset functionalities
are achieved by the means of different TI SCI device operations
provided by the TI SCI framework.
Signed-off-by: Andrew F. Davis <afd@ti.com>
[s-anna@ti.com: documentation changes, revised commit message]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
[p.zabel@pengutronix.de: const struct reset_control_ops]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The hi6220_reset driver can be built as a standalone module
yet it cannot be loaded because it depends on GPL exported symbols.
Lets set the module license so that the module loads, and things like
the on-board kirin drm starts working.
Signed-off-by: Jeremy Linton <lintonrjeremy@gmail.com>
Reviewed-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Cortina Systems Gemini reset controller is a simple
32bit register with self-deasserting reset lines. It is
accessed using regmap over syscon.
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Rename the current Kconfig name used for the TI SYSCON Reset
driver from TI_SYSCON_RESET to RESET_TI_SYSCON to match the
convention used for all the reset drivers present at the
base reset folder.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "devm_kcalloc".
* Replace the specification of a data structure by a pointer dereference
to make the corresponding size determination a bit safer according to
the Linux coding style convention.
* Delete the local variable "size" which became unnecessary with
this refactoring.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Driver updates for ARM SoCs.
* Reset subsystem, merged through arm-soc by tradition:
- Make bool drivers explicitly non-modular
- New support for i.MX7 and Arria10 reset controllers
* PATA driver for Palmchip BK371 (acked by Tejun)
* Power domain drivers for i.MX (GPC, GPCv2)
- Moved out of mach-imx for GPC
- Bunch of tweaks, fixes, etc
* PMC support for Tegra186
* SoC detection support for Renesas RZ/G1H and RZ/G1N
* Move Tegra flow controller driver from mach directory to drivers/soc
- (Power management / CPU power driver)
* Misc smaller tweaks for other platforms
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Olof Johansson:
"Driver updates for ARM SoCs:
Reset subsystem, merged through arm-soc by tradition:
- Make bool drivers explicitly non-modular
- New support for i.MX7 and Arria10 reset controllers
PATA driver for Palmchip BK371 (acked by Tejun)
Power domain drivers for i.MX (GPC, GPCv2)
- Moved out of mach-imx for GPC
- Bunch of tweaks, fixes, etc
PMC support for Tegra186
SoC detection support for Renesas RZ/G1H and RZ/G1N
Move Tegra flow controller driver from mach directory to drivers/soc
- (Power management / CPU power driver)
Misc smaller tweaks for other platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
soc: pm-domain: Fix the mangled urls
soc: renesas: rcar-sysc: Add support for R-Car H3 ES2.0
soc: renesas: rcar-sysc: Add support for fixing up power area tables
soc: renesas: Register SoC device early
soc: imx: gpc: add workaround for i.MX6QP to the GPC PD driver
dt-bindings: imx-gpc: add i.MX6 QuadPlus compatible
soc: imx: gpc: add defines for domain index
soc: imx: Add GPCv2 power gating driver
dt-bindings: Add GPCv2 power gating driver
ARM/clk: move the ICST library to drivers/clk
ARM: plat-versatile: remove stale clock header
ARM: keystone: Drop PM domain support for k2g
soc: ti: Add ti_sci_pm_domains driver
dt-bindings: Add TI SCI PM Domains
PM / Domains: Do not check if simple providers have phandle cells
PM / Domains: Add generic data pointer to genpd data struct
soc/tegra: Add initial flowctrl support for Tegra132/210
soc/tegra: flowctrl: Add basic platform driver
soc/tegra: Move Tegra flowctrl driver
ARM: tegra: Remove unnecessary inclusion of flowctrl header
...
Rename the internal __reset_control_get/put functions to
__reset_control_get/put_internal and add an exported
__reset_control_get equivalent to __of_reset_control_get
that takes a struct device parameter.
This avoids the confusing call to __of_reset_control_get in
the non-DT case and fixes the devm_reset_control_get_optional
function to return NULL if RESET_CONTROLLER is enabled but
dev->of_node == NULL.
Fixes: bb475230b8 ("reset: make optional functions really optional")
Reported-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Add reset lines for the Denali NAND controller on all UniPhier SoCs,
for the Cadence eMMC controller on LD11/LD20 SoCs.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Allwinner reset controller has 32-bit registers, so translating
the reset cell number into a register and bit offset should not use
any architecture dependent data size. Otherwise this breaks for 64-bit
architectures like arm64.
Fix this by making it clear that it's the hardware register width which
matters here in the calculation.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This patch adds the reset controller functionality for
Peripheral PHYs to the Arria10 System Resource Chip.
Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The SoC-FPGA reset controller driver defines NR_BANKS as 4 and uses that define
for two unrelated purposes. It is used
1. as an increment for reset line banks which are 32-bit registers with 4-byte
aligned addresses.
2. as the total number of reset line banks which together with the number of
resets per bank (32) limits the total number of useable resets to 128 and the
highest useable reset ID to 127.
This is clearly wrong as there are resets with higher IDs than 127 defined in
include/dt-bindings/reset/altr,rst-mgr.h and altr,rst-mgr-a10.h.
The patch introduces a new define BANK_INCREMENT for calculating the register
addresses as before and increases NR_BANKS to 8 for useable reset IDs up to 255.
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Fixes the following sparse warnings:
drivers/reset/reset-uniphier.c:68:34: warning:
symbol 'uniphier_sld3_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:73:34: warning:
symbol 'uniphier_pro4_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:81:34: warning:
symbol 'uniphier_pro5_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:89:34: warning:
symbol 'uniphier_pxs2_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:103:34: warning:
symbol 'uniphier_ld11_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:108:34: warning:
symbol 'uniphier_ld20_sys_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:137:34: warning:
symbol 'uniphier_sld3_mio_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:157:34: warning:
symbol 'uniphier_pro5_sd_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:174:34: warning:
symbol 'uniphier_ld4_peri_reset_data' was not declared. Should it be static?
drivers/reset/reset-uniphier.c:187:34: warning:
symbol 'uniphier_pro4_peri_reset_data' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_PISTACHIO
drivers/reset/Kconfig: bool "Pistachio Reset Driver" if COMPILE_TEST
...meaning that it currently is not being built as a module by anyone.
Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_ATH79
drivers/reset/Kconfig: bool "AR71xx Reset Driver" if COMPILE_TEST
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Alban Bedel <albeu@free.fr>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Alban Bedel <albeu@free.fr>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_OXNAS
drivers/reset/Kconfig: bool
...meaning that it currently is not being built as a module by anyone.
Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
Cc: linux-oxnas@lists.tuxfamily.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
arch/arm/mach-meson/Kconfig:menuconfig ARCH_MESON
arch/arm/mach-meson/Kconfig: bool "Amlogic Meson SoCs"
arch/arm64/Kconfig.platforms:config ARCH_MESON
arch/arm64/Kconfig.platforms: bool "Amlogic Platforms"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-amlogic@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Driver updates for ARM SoCs.
A handful of driver changes this time around. The larger changes are:
- Reset drivers for hi3660 and zx2967
- AHCI driver for Davinci, acked by Tejun and brought in here due to
platform dependencies
- Cleanups of atmel-ebi (External Bus Interface)
- Tweaks for Rockchip GRF (General Register File) usage (kitchensink misc
register range on the SoCs)
- PM domains changes for support of two new ZTE SoCs (zx296718 and zx2967)
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs.
A handful of driver changes this time around. The larger changes are:
- Reset drivers for hi3660 and zx2967
- AHCI driver for Davinci, acked by Tejun and brought in here due to
platform dependencies
- Cleanups of atmel-ebi (External Bus Interface)
- Tweaks for Rockchip GRF (General Register File) usage (kitchensink
misc register range on the SoCs)
- PM domains changes for support of two new ZTE SoCs (zx296718 and
zx2967)"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (53 commits)
soc: samsung: pmu: Add register defines for pad retention control
reset: make zx2967 explicitly non-modular
reset: core: fix reset_control_put
soc: samsung: pm_domains: Read domain name from the new label property
soc: samsung: pm_domains: Remove message about failed memory allocation
soc: samsung: pm_domains: Remove unused name field
soc: samsung: pm_domains: Use full names in subdomains registration log
sata: ahci-da850: un-hardcode the MPY bits
sata: ahci-da850: add a workaround for controller instability
sata: ahci: export ahci_do_hardreset() locally
sata: ahci-da850: implement a workaround for the softreset quirk
sata: ahci-da850: add device tree match table
sata: ahci-da850: get the sata clock using a connection id
soc: samsung: pmu: Remove duplicated define for ARM_L2_OPTION register
memory: atmel-ebi: Enable the SMC clock if specified
soc: samsung: pmu: Remove unused and duplicated defines
memory: atmel-ebi: Properly handle multiple reference to the same CS
memory: atmel-ebi: Fix the test to enable generic SMC logic
soc: samsung: pm_domains: Add new Exynos5433 compatible
soc: samsung: pmu: Add dummy support for Exynos5433 SoC
...
For a shared reset, when the reset is successful, the triggered_count is
incremented when trying to call the reset callback, so that another device
sharing the same reset line won't trigger it again. If the reset has not
been triggered successfully, the trigger_count should be decremented.
The code does the opposite, and decrements the trigger_count on success.
As a consequence, another device sharing the reset will be able to trigger
it again.
Fixed be removing negation in from of the error code of the reset function.
Fixes: 7da33a37b4 ("reset: allow using reset_control_reset with shared reset")
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
config RESET_ZX2967
bool "ZTE ZX2967 Reset Driver
...meaning that it currently is not being built as a module by anyone.
Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.
Since builtin_platform_driver() was already in use, the init ordering
remains unchanged with this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
We don't replace module.h with init.h since the file does not appear
to use __init prefix anywhere.
Cc: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Reviewed-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Commit "reset: make optional functions really optional" missed to
adjust one check in reset_control_put, causing a NULL pointer
access for optional resets.
Fixes: bb475230b8 "reset: make optional functions really optional"
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The *_get_optional_* functions weren't really optional so this patch
makes them really optional.
These *_get_optional_* functions will now return NULL instead of an error
if no matching reset phandle is found in the DT, and all the
reset_control_* functions now accept NULL rstc pointers.
Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Since the new parameter being added is going to be a bool this patch
changes the shared flag from int to bool to match the new parameter.
Signed-off-by: Ramiro Oliveira <Ramiro.Oliveira@synopsys.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The LD11 SoC is equipped with not only MIO-reset but also SD-reset
for controlling RST_n pin of the eMMC device.
Update the binding document and remove unneeded "." from each line
in itemization.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Declare reset_control_ops structures as const as they are only stored
in the ops field of a reset_controller_dev structure. This field is of
type const struct reset_control_ops *, so reset_control_ops structures
having this property can be declared as const.
Done using Coccinelle:
@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct reset_control_ops i@p={...};
@ok1@
identifier r1.i;
position p;
struct ti_syscon_reset_data data;
@@
data.rcdev.ops=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct reset_control_ops i;
File size before: drivers/reset/reset-ti-syscon.o
text data bss dec hex filename
1329 240 0 1569 621 drivers/reset/reset-ti-syscon.o
File size after: drivers/reset/reset-ti-syscon.o
text data bss dec hex filename
1377 192 0 1569 621 drivers/reset/reset-ti-syscon.o
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
If STATUS_SET was not set, ti_syscon_reset_status would always return 0
no matter whether the status_bit was set or not.
Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Fixes: cc7c2bb149 ("reset: add TI SYSCON based reset driver")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Driver updates for ARM SoCs, including a couple of newly added drivers:
- A new driver for the power management controller on TI Keystone
- Support for the prerelease "SCPI" firmware protocol that ended up
being shipped by Amlogic in their GXBB SoC.
- A soc_device can now be matched using a glob from inside the
kernel, when another driver wants to know the specific chip
it is running on and cannot find out from DT, firmware or hardware.
- Renesas SoCs now support identification through the soc_device
interface, both in user space and kernel.
- Renesas r8a7743 and r8a7745 gain support for their system controller
- A new checking module for the ARM "PSCI" (not to be confused
with "SCPI" mentioned above) firmware interface.
- A new driver for the Tegra GMI memory interface
- Support for the Tegra firmware interfaces with their
power management controllers
As usual, the updates for the reset controller framework are merged
here, as they tend to touch multiple SoCs as well, including a new
driver for the Oxford (now Broadcom) OX820 chip and the Tegra
bpmp interface.
The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and
Rockchips SoCs see some further updates.
Conflicts:
- ARCH_RENESAS now selects SOC_BUS, but no longer needs GPIOLIB
- drivers/soc/renesas/Makefile: multiple files got added, keep
all in logical sorting
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, including a couple of newly added
drivers:
- A new driver for the power management controller on TI Keystone
- Support for the prerelease "SCPI" firmware protocol that ended up
being shipped by Amlogic in their GXBB SoC.
- A soc_device can now be matched using a glob from inside the
kernel, when another driver wants to know the specific chip it is
running on and cannot find out from DT, firmware or hardware.
- Renesas SoCs now support identification through the soc_device
interface, both in user space and kernel.
- Renesas r8a7743 and r8a7745 gain support for their system
controller
- A new checking module for the ARM "PSCI" (not to be confused with
"SCPI" mentioned above) firmware interface.
- A new driver for the Tegra GMI memory interface
- Support for the Tegra firmware interfaces with their power
management controllers
As usual, the updates for the reset controller framework are merged
here, as they tend to touch multiple SoCs as well, including a new
driver for the Oxford (now Broadcom) OX820 chip and the Tegra bpmp
interface.
The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and
Rockchips SoCs see some further updates"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (76 commits)
misc: sram: remove useless #ifdef
drivers: psci: Allow PSCI node to be disabled
drivers: psci: PSCI checker module
soc: renesas: Identify SoC and register with the SoC bus
firmware: qcom: scm: Return PTR_ERR when devm_clk_get fails
firmware: qcom: scm: Remove core, iface and bus clocks dependency
dt-bindings: firmware: scm: Add MSM8996 DT bindings
memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name()
bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name()
ARM: shmobile: Document DT bindings for Product Register
soc: renesas: rcar-sysc: add R8A7745 support
reset: Add Tegra BPMP reset driver
dt-bindings: firmware: Allow child nodes inside the Tegra BPMP
dt-bindings: Add power domains to Tegra BPMP firmware
firmware: tegra: Add BPMP support
firmware: tegra: Add IVC library
dt-bindings: firmware: Add bindings for Tegra BPMP
mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells()
mailbox: Add Tegra HSP driver
firmware: arm_scpi: add support for pre-v1.0 SCPI compatible
...
This contains a patch which implements a reset driver using the services
provided by the BPMP firmware (via the MRQ_RESET request).
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Merge tag 'tegra-for-4.10-reset' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into next/drivers
reset: Add Tegra BPMP reset driver
This contains a patch which implements a reset driver using the services
provided by the BPMP firmware (via the MRQ_RESET request).
* tag 'tegra-for-4.10-reset' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
reset: Add Tegra BPMP reset driver
Signed-off-by: Olof Johansson <olof@lixom.net>
This driver uses the services provided by the BPMP firmware driver to
implement a reset driver based on the MRQ_RESET request.
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Some SoCs (for example Amlogic GXBB) implement a reset controller which
only supports a reset pulse (triggered via reset_control_reset). At the
same time multiple devices (in case of the Amlogic GXBB SoC both USB
PHYs) are sharing the same reset line.
This patch allows using reset_control_reset also for shared resets.
There are limitations though:
reset_control_reset can only be used if reset_control_assert was not
used yet.
reset_control_assert can only be used if reset_control_reset was not
used yet.
For shared resets the reset is only triggered once for the lifetime of
the reset_control instance (the reset can be triggered again if all
consumers of that specific reset_control are gone, as the reset
framework will free the reset_control instance in that case).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_LPC18XX
drivers/reset/Kconfig: bool "LPC18xx/43xx Reset Driver" if COMPILE_TEST
drivers/reset/Kconfig: default ARCH_LPC18XX
or
arch/arm/Kconfig:config ARCH_LPC18XX
arch/arm/Kconfig: bool "NXP LPC18xx/LPC43xx"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Makefile/Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_ZYNQ
drivers/reset/Kconfig: bool "ZYNQ Reset Driver" if COMPILE_TEST
drivers/reset/Kconfig: default ARCH_ZYNQ
or
drivers/reset/Makefile:obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o
arch/arm/mach-zynq/Kconfig:config ARCH_ZYNQ
arch/arm/mach-zynq/Kconfig: bool "Xilinx Zynq ARM Cortex A9 Platform" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the few remaining traces of modular macro usage, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: "Sören Brinkmann" <soren.brinkmann@xilinx.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_SUNXI
drivers/reset/Kconfig: bool "Allwinner SoCs Reset Driver" if COMPILE_TEST && !ARCH_SUNXI
drivers/reset/Kconfig: default ARCH_SUNXI
or
arch/arm/mach-sunxi/Kconfig:menuconfig ARCH_SUNXI
arch/arm/mach-sunxi/Kconfig: bool "Allwinner SoCs" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the few remaining traces of modular macro usage, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_SOCFPGA
drivers/reset/Kconfig: bool "SoCFPGA Reset Driver" if COMPILE_TEST
drivers/reset/Kconfig: default ARCH_SOCFPGA
or
arch/arm/mach-socfpga/Kconfig:menuconfig ARCH_SOCFPGA
arch/arm/mach-socfpga/Kconfig: bool "Altera SOCFPGA family" if ARCH_MULTI_V7
...meaning that it currently is not being built as a module by anyone.
Lets remove the small amount of modular evidence that remains, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Kconfig currently controlling compilation of this code is:
drivers/reset/Kconfig:config RESET_BERLIN
drivers/reset/Kconfig: bool "Berlin Reset Driver" if COMPILE_TEST
drivers/reset/Kconfig: default ARCH_BERLIN
or
arch/arm/mach-berlin/Kconfig:menuconfig ARCH_BERLIN
arch/arm/mach-berlin/Kconfig: bool "Marvell Berlin SoCs" if ARCH_MULTI_V7
or
arch/arm64/Kconfig.platforms:config ARCH_BERLIN
arch/arm64/Kconfig.platforms: bool "Marvell Berlin SoC Family"
...meaning that it currently is not being built as a module by anyone.
Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.
Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.
Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.
We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
I made a mistake as for naming for this block. The MIO block is not
implemented for these 3 SoCs in the first place. The current naming
will be a trouble if an SoC with both MIO and SD-ctrl blocks appear
in the future.
This driver has just been merged in the previous merge window.
Rename it before the release.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
In order to support the Oxford Semiconductor OX820 SoC, add a new
compatible string.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Support for STiH415/6 SoCs is being removed from the
kernel because the platforms are obsolete. This patch removes
the reset drivers for these SoC's.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Also remove the RESET_CONTROLLER dependency, this Kconfig file is
included inside the menuconfig already.
Cc: Chen Feng <puck.chen@hisilicon.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Cc: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Sören Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Gabriel Fernandez <gabriel.fernandez@st.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Cc: Damien Horsley <Damien.Horsley@imgtec.com>
Acked-by: James Hartley <james.hartley@imgtec.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Acked-by: Joachim Eastwood <manabian@gmail.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Cc: Antoine Tenart <antoine.tenart@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Visible only if COMPILE_TEST is enabled, this allows to include the
driver in build tests.
Acked-by: Aban Bedel <albeu@free.fr>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The driver uses readl/writel, so it should include linux/io.h.
Acked-by: Aban Bedel <albeu@free.fr>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Instead of potentially crashing, dump a backtrace and return -EINVAL if
rstc is NULL or an error code.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This is the initial commit for UniPhier reset controller driver.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The STM32 MCUs family IPs can be reset by accessing some registers
from the RCC block.
The list of available reset lines is documented in the DT bindings.
Signed-off-by: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Since we can just add it to membase once, there is no need to store
modrst_offset separately, and to repeat the addition with every access.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Add a reset-controller driver for performing reset management of
various devices present on the SoC, with the reset registers shared
between devices in a common register memory space. This driver uses
the syscon/regmap frameworks to actually implement the various reset
functionalities needed by the reset consumer devices.
Signed-off-by: Andrew F. Davis <afd@ti.com>
[s-anna@ti.com: add documentation, syscon name change]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
There are two reset controllers in hi6220 SoC:
The peripheral reset controller bits are part of sysctrl registers.
The media reset controller bits are part of mediactrl registers.
So change register access to syscon way.
And rename current reset controller to peripheral one.
Signed-off-by: Chen Feng <puck.chen@hisilicon.com>
Signed-off-by: Xia Qing <saberlily.xia@hisilicon.com>
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This patch adds the platform driver for the Amlogic Meson SoC Reset
Controller.
The Meson8b and GXBB SoCs are supported.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use the brand new devm_reset_controller_register() API to get rid of
the platform driver remove callback.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
In "make menuconfig", reset drivers are currently lined up together
with the reset sub-system menu, like this:
-*- Reset Controller Support ----
< > Hi6220 Reset Driver
(It also means, the menu "Reset Controller Support" is always empty.)
"Hi6220 Reset Driver" should go into the sub-menu of the
"Reset Controller Support".
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use devm_reset_controller_register() for the reset controller
registration and drop the .remove callback.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use devm_reset_controller_register() for the reset controller
registration and drop the .remove callback.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use devm_reset_controller_register() for the reset controller
registration and drop the .remove callback.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use devm_reset_controller_register() for the reset controller
registration and drop the .remove callback.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Use devm_reset_controller_register() for the reset controller
registration and remove the unregister call from the .remove callback.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Add a device managed API for reset_controller_register().
This helps in reducing code in .remove callbacks and sometimes
dropping .remove callbacks entirely.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
