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0316b05311
linux/arch/mips
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Mathias Kresin 0316b05311
MIPS: ath79: get PCIe controller out of reset 
The ar724x pci driver expects the PCIe controller to be brought out of
reset by the bootloader.

At least the AVM Fritz 300E bootloader doesn't take care of releasing
the different PCIe controller related resets which causes an endless
hang as soon as either the PCIE Reset register (0x180f0018) or the PCI
Application Control register (0x180f0000) is read from.

Do the full "PCIE Root Complex Initialization Sequence" if the PCIe
host controller is still in reset during probing.

The QCA u-boot sleeps 10ms after the PCIE Application Control bit is
set to ready. It has been shown that 10ms might not be enough time if
PCIe should be used right after setting the bit. During my tests it
took up to 20ms till the link was up. Giving the link up to 100ms
should work for all cases.

Signed-off-by: Mathias Kresin <dev@kresin.me>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19916/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
2018-07-24 19:08:06 -07:00
..
alchemy mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
ar7 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
ath25 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
ath79 MIPS: ath79: enable uart during early_prink 2018-07-24 19:07:42 -07:00
bcm47xx MIPS: BCM47XX: Enable 74K Core ExternalSync for PCIe erratum 2018-06-18 22:19:50 +01:00
bcm63xx mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
bmips MIPS: bmips: remove unnecessary call to register "simple-bus" 2018-06-24 09:27:27 -07:00
boot mips: mscc: build FIT image for Ocelot 2018-07-24 17:42:19 -07:00
cavium-octeon MIPS: Octeon: Remove extern declarations. 2018-07-24 17:39:03 -07:00
cobalt
configs MIPS: Ci20: Enable SPI/GPIO driver 2018-07-24 13:43:54 -07:00
crypto MIPS: crypto: Add crc32 and crc32c hw accelerated module 2018-02-19 20:50:36 +00:00
dec MIPS: Convert update_persistent_clock() to update_persistent_clock64() 2018-05-14 23:58:23 +01:00
emma
fw mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
generic mips: mscc: build FIT image for Ocelot 2018-07-24 17:42:19 -07:00
include MIPS: ath79: finetune cpu-overrides 2018-07-24 18:57:59 -07:00
jazz mips/jazz: provide missing dma_mask/coherent_dma_mask 2018-07-12 08:58:31 -07:00
jz4740 MIPS: jz4740: Bump zload address 2018-07-23 17:35:19 -07:00
kernel MIPS: Loongson: Add Loongson-3A R3.1 basic support 2018-07-23 17:53:34 -07:00
kvm Small update for KVM. 2018-06-12 11:34:04 -07:00
lantiq MIPS: lantiq: Use dma_zalloc_coherent() in dma code 2018-07-23 11:02:19 -07:00
lasat mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
lib MIPS: memset.S: Add comments to fault fixup handlers 2018-07-24 17:02:43 -07:00
loongson32 MIPS: use generic dma noncoherent ops for simple noncoherent platforms 2018-06-24 09:26:05 -07:00
loongson64 MIPS: Loongson: Add Loongson-3A R3.1 basic support 2018-07-23 17:53:34 -07:00
math-emu MIPS: math-emu: Mark fall throughs in switch statements with a comment 2017-12-12 17:20:20 +01:00
mm arch: mips: mm: page: Remove unused function 2018-06-24 09:27:27 -07:00
mti-malta MIPS: Malta: Use PIIX4 poweroff driver to power down 2018-06-24 09:27:27 -07:00
net bpf, mips: remove unused function 2018-05-14 19:11:45 -07:00
netlogic mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
oprofile MIPS: perf: More robustly probe for the presence of per-tc counters 2018-05-15 15:16:16 +01:00
paravirt mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
pci MIPS: ath79: get PCIe controller out of reset 2018-07-24 19:08:06 -07:00
pic32 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
pistachio License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pmcs-msp71xx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pnx833x mtd: nand: Rename nand.h into rawnand.h 2017-08-13 10:11:49 +02:00
power License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ralink mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
rb532 MIPS: RB532: Avoid undefined mac_pton without GENERIC_NET_UTILS 2018-01-10 16:39:03 +01:00
sgi-ip22 Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 17:56:58 -08:00
sgi-ip27 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
sgi-ip32 MIPS: IP32: use generic dma noncoherent ops 2018-06-24 09:27:27 -07:00
sibyte mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
sni MIPS: sni: Remove the read_persistent_clock() 2018-05-14 23:58:25 +01:00
tools Update MIPS email addresses 2017-11-03 09:02:30 -07:00
txx9 mips: unify prom_putchar() declarations 2018-07-17 09:40:17 -07:00
vdso MIPS: VDSO: Replace __mips_isa_rev with MIPS_ISA_REV 2018-03-09 11:22:48 +00:00
vr41xx MIPS: Annotate cpu_wait implementations with __cpuidle 2018-06-28 14:18:54 -07:00
Kbuild MIPS: Disable Werror when W= is set 2017-04-10 11:56:07 +02:00
Kbuild.platforms MIPS: Xilfpga: Switch to using generic defconfigs 2017-11-08 22:54:14 +00:00
Kconfig MIPS: ath79: select the PINCTRL subsystem 2018-07-24 18:57:38 -07:00
Kconfig.debug MIPS: Fix CPS SMP NS16550 UART defaults 2018-01-10 16:44:49 +01:00
Makefile MIPS: Always use -march=<arch>, not -<arch> shortcuts 2018-06-28 14:24:30 -07:00
Makefile.postlink License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00