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Geert Uytterhoeven 9b23203c32 ravb: Mask PHY mode to avoid inserting delays twice 
Until recently, the Micrel KSZ9031 PHY driver ignored any PHY mode
("RGMII-*ID") settings, but used the hardware defaults, augmented by
explicit configuration of individual skew values using the "*-skew-ps"
DT properties.  The lack of PHY mode support was compensated by the
EtherAVB MAC driver, which configures TX and/or RX internal delay
itself, based on the PHY mode.

However, now the KSZ9031 driver has gained PHY mode support, delays may
be configured twice, causing regressions.  E.g. on the Renesas
Salvator-X board with R-Car M3-W ES1.0, TX performance dropped from ca.
400 Mbps to 0.1-0.3 Mbps, as measured by nuttcp.

As internal delay configuration supported by the KSZ9031 PHY is too
limited for some use cases, the ability to configure MAC internal delay
is deemed useful and necessary.  Hence a proper fix would involve
splitting internal delay configuration in two parts, one for the PHY,
and one for the MAC.  However, this would require adding new DT
properties, thus breaking DTB backwards-compatibility.

Hence fix the regression in a backwards-compatibility way, by letting
the EtherAVB driver mask the PHY mode when it has inserted a delay, to
avoid the PHY driver adding a second delay.  This also fixes messages
like:

    Micrel KSZ9031 Gigabit PHY e6800000.ethernet-ffffffff:00: *-skew-ps values should be used only with phy-mode = "rgmii"

as the PHY no longer sees the original RGMII-*ID mode.

Solving the issue by splitting configuration in two parts can be handled
in future patches, and would require retaining a backwards-compatibility
mode anyway.

Fixes: bcf3440c6d ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-05-30 21:50:37 -07:00
..
accessibility
acpi ACPI: EC: PM: Avoid flushing EC work when EC GPE is inactive 2020-05-18 13:15:13 +02:00
amba amba: Initialize dma_parms for amba devices 2020-04-28 17:44:34 +02:00
android Merge 5.6-rc7 into char-misc-next 2020-03-23 07:59:38 +01:00
ata ata: sata_inic162x fix a spelling issue 2020-04-23 09:59:30 -06:00
atm docs: networking: convert iphase.txt to ReST 2020-04-28 14:39:47 -07:00
auxdisplay Merge 5.6-rc7 into char-misc-next 2020-03-23 07:59:38 +01:00
base driver core: Fix handling of SYNC_STATE_ONLY + STATELESS device links 2020-05-21 10:54:32 +02:00
bcma
block tcp: add tcp_sock_set_quickack 2020-05-28 11:11:45 -07:00
bluetooth Bluetooth: serdev: Constify serdev_device_ops 2020-05-13 09:27:36 +02:00
bus bus: mhi: core: Fix some error return code 2020-05-15 16:32:20 +02:00
cdrom sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
char Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
clk clk: ti: clkctrl: convert subclocks to use proper names also 2020-05-12 20:18:19 -07:00
clocksource clocksource/drivers/timer-vf-pit: Add missing parenthesis 2020-04-05 09:24:58 +02:00
connector
counter counter: 104-quad-8: Add lock guards - generic interface 2020-04-19 17:50:00 +01:00
cpufreq cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once 2020-04-27 10:30:11 +02:00
cpuidle Merge branch 'pm-cpuidle' 2020-04-10 11:32:22 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-06 22:10:13 -07:00
dax device-dax: don't leak kernel memory to user space after unloading kmem 2020-05-23 10:26:31 -07:00
dca
devfreq PM / devfreq: Fix handling dev_pm_qos_remove_request result 2020-03-25 08:35:03 +09:00
dio dio: Fix dio_bus_match() kerneldoc 2020-03-09 11:12:19 +01:00
dma dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()' 2020-05-19 22:26:01 +05:30
dma-buf dma-buf: fix documentation build warnings 2020-04-30 19:47:39 +05:30
edac Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
eisa .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
extcon Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
firewire
firmware EFI fixes for v5.7-rc6: 2020-05-22 20:06:25 +02:00
fpga fpga: dfl: pci: fix return value of cci_pci_sriov_configure 2020-03-30 20:45:30 -07:00
fsi
gnss
gpio gpio: tegra: mask GPIO IRQs during IRQ shutdown 2020-04-28 16:22:33 +02:00
gpu Merge tag 'amd-drm-fixes-5.7-2020-05-21' of git://people.freedesktop.org/~agd5f/linux into drm-fixes 2020-05-22 10:30:51 +10:00
greybus
hid HID: quirks: Add HID_QUIRK_NO_INIT_REPORTS quirk for Dell K12A keyboard-dock 2020-05-04 11:24:58 +02:00
hsi
hv hyperv-fixes for 5.7-rc4 2020-04-27 13:28:27 -07:00
hwmon hwmon: (da9052) Synchronize access with mfd 2020-05-13 10:06:09 -07:00
hwspinlock hwspinlock: hwspinlock_internal.h: Replace zero-length array with flexible-array member 2020-03-25 22:30:46 -07:00
hwtracing coresight: cti: remove incorrect NULL return check 2020-05-15 16:32:20 +02:00
i2c i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()' 2020-05-15 11:23:49 +02:00
i3c i3c: convert to use i2c_new_client_device() 2020-03-29 10:35:50 +02:00
ide drivers/ide: Fix build regression. 2020-04-04 18:07:59 -07:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
iio iio: sca3000: Remove an erroneous 'get_device()' 2020-05-10 10:53:36 +01:00
infiniband Merge branch 'mlx5-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux 2020-05-29 14:38:57 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2020-04-07 20:20:12 -07:00
interconnect interconnect: qcom: Move the static keyword to the front of declaration 2020-04-29 13:11:44 +02:00
iommu iommu: Fix deferred domain attachment 2020-05-19 15:05:43 +02:00
ipack ipack: tpci200: fix error return code in tpci200_register() 2020-05-15 16:32:20 +02:00
irqchip Merge branch 'irq/gic-v4.1-fixes-5.7' into irq/irqchip-5.7 2020-04-17 08:59:55 +01:00
isdn mISDN: make dmril and dmrim static 2020-04-16 13:52:31 -07:00
leds leds: core: Fix warning message when init_data 2020-04-06 23:12:08 +02:00
lightnvm for-5.7/drivers-2020-03-29 2020-03-30 11:43:51 -07:00
macintosh sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
mailbox mailbox: imx: add SCU MU support 2020-03-19 23:04:32 -05:00
mcb
md - Document DM integrity allow_discard feature that was added during 2020-04-30 16:45:08 -07:00
media bpf: Implement CAP_BPF 2020-05-15 17:29:41 +02:00
memory ARM: driver updates 2020-04-03 15:05:35 -07:00
memstick
message scsi: message: fusion: Replace zero-length array with flexible-array member 2020-03-26 22:40:47 -04:00
mfd mfd: intel-lpss: Fix Intel Elkhart Lake LPSS I2C input clock 2020-03-30 07:35:28 +01:00
misc misc: rtsx: Add short delay after exit from ASPM 2020-05-22 13:27:38 +02:00
mmc mmc: sdhci-acpi: Add SDHCI_QUIRK2_BROKEN_64_BIT_DMA for AMDI0040 2020-05-11 10:51:30 +02:00
most most: core: use function subsys_initcall() 2020-04-28 15:04:09 +02:00
mtd This pull request contains the following bug fixes for MTD: 2020-05-20 13:23:55 -07:00
mux
net ravb: Mask PHY mode to avoid inserting delays twice 2020-05-30 21:50:37 -07:00
nfc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-03-25 18:58:11 -07:00
ntb pci-v5.7-changes 2020-04-03 14:25:02 -07:00
nubus
nvdimm libnvdimm for 5.7 2020-04-08 21:03:40 -07:00
nvme ipv4: add ip_sock_set_tos 2020-05-28 11:11:45 -07:00
nvmem nvmem: core: remove nvmem_sysfs_get_groups() 2020-03-25 19:23:49 +01:00
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-04-25 20:18:53 -07:00
opp opp: Manage empty OPP tables with clk handle 2020-04-13 16:14:55 +05:30
oprofile
parisc parisc: Replace setup_irq() by request_irq() 2020-04-05 22:05:23 +02:00
parport sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
pci PCI: Move Apex Edge TPU class quirk to fix BAR assignment 2020-04-14 19:16:51 -05:00
pcmcia pcmcia: remove some unused space characters 2020-03-31 18:48:22 +02:00
perf arm64 updates for 5.7: 2020-03-31 10:05:01 -07:00
phy phy: qualcomm: usb-hs-28nm: Prepare clocks in init 2020-04-30 12:10:49 +05:30
pinctrl pinctrl: qcom: Add affinity callbacks to msmgpio IRQ chip 2020-05-12 14:29:29 +02:00
platform chrome-platform fixes for v5.7-rc5 2020-05-06 16:40:14 -07:00
pnp
power drivers: Remove inclusion of vermagic header 2020-04-21 13:27:37 -07:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:40:08 -07:00
pps
ps3 powerpc/ps3: Remove an unneeded NULL check 2020-04-03 00:09:59 +11:00
ptp ptp_clock: Let the ADJ_OFFSET interface respect the ADJ_NANO flag for PHC devices. 2020-05-25 17:55:17 -07:00
pwm pwm: pca9685: Fix PWM/GPIO inter-operation 2020-04-03 21:41:42 +02:00
rapidio rapidio: fix an error in get_user_pages_fast() error handling 2020-05-23 10:26:31 -07:00
ras
regulator regulator: Revert "Use driver_deferred_probe_timeout for regulator_init_complete_work" 2020-04-29 19:57:45 +02:00
remoteproc remoteproc fixes for v5.7 2020-04-23 09:28:15 -07:00
reset
rpmsg rpmsg: pull in slab.h 2020-04-17 06:05:29 -04:00
rtc - New Drivers 2020-04-07 19:48:52 -07:00
s390 s390/net: remove pm support from iucv drivers 2020-05-19 12:48:39 -07:00
sbus misc: move FLASH_MINOR into miscdevice.h and fix conflicts 2020-03-18 12:27:04 +01:00
scsi scsi: pm: Balance pm_only counter of request queue during system resume 2020-05-11 19:43:25 -04:00
sfi
sh
siox
slimbus slimbus: ngd: add v2.1.0 compatible 2020-03-12 16:51:15 +01:00
soc soc: fsl: dpio: properly compute the consumer index 2020-05-07 17:35:24 -07:00
soundwire Char/Misc driver patches for 5.7-rc1 2020-04-03 13:22:40 -07:00
spi sound updates for 5.7-rc1 2020-04-02 15:50:04 -07:00
spmi
ssb ssb: scan: fix block comments coding style issues 2020-04-28 12:02:22 +03:00
staging One batch of changes, containing: 2020-05-26 20:17:35 -07:00
target ipv4: add ip_sock_set_freebind 2020-05-28 11:11:45 -07:00
tc
tee ARM: driver updates 2020-04-03 15:05:35 -07:00
thermal - Convert tsens configuration DT binding to yaml (Rajeshwari) 2020-04-07 20:00:16 -07:00
thunderbolt thunderbolt: Check return value of tb_sw_read() in usb4_switch_op() 2020-04-28 19:00:59 +02:00
tty tty: serial: add missing spin_lock_init for SiFive serial console 2020-05-15 14:55:10 +02:00
uio uio: uio_pdrv_genirq: use new devm_uio_register_device() function 2020-03-18 12:34:10 +01:00
usb USB: gadget: fix illegal array access in binding with UDC 2020-05-15 15:42:17 +02:00
vdpa vdpasim: remove unused variable 'ret' 2020-05-11 06:44:12 -04:00
vfio vfio/type1: Fix VA->PA translation for PFNMAP VMAs in vaddr_get_pfn() 2020-04-23 12:10:01 -06:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-05-24 13:47:27 -07:00
video drm fixes for 5.7-rc1 2020-04-07 20:24:34 -07:00
virt virt: vbox: Use fallthrough; 2020-03-19 07:41:03 +01:00
virtio virtio-balloon: Avoid using the word 'report' when referring to free page hinting 2020-04-17 06:05:30 -04:00
visorbus
vlynq
vme
w1
watchdog watchdog: sp805: fix restart handler 2020-04-08 11:18:38 +02:00
xen xen: branch for v5.7-rc2 2020-04-17 10:35:17 -07:00
zorro SPDX patches for 5.7-rc1. 2020-04-03 13:12:26 -07:00
Kconfig virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00
Makefile virtio: fixes, vdpa 2020-04-08 10:51:53 -07:00