WSL2-Linux-Kernel/Documentation
Stas Sergeev 4cba5c2103 of_mdio: add new DT property 'managed' to specify the PHY management type
Currently the PHY management type is selected by the MAC driver arbitrary.
The decision is based on the presence of the "fixed-link" node and on a
will of the driver's authors.
This caused a regression recently, when mvneta driver suddenly started
to use the in-band status for auto-negotiation on fixed links.
It appears the auto-negotiation may not work when expected by the MAC driver.
Sebastien Rannou explains:
<< Yes, I confirm that my HW does not generate an in-band status. AFAIK, it's
a PHY that aggregates 4xSGMIIs to 1xQSGMII ; the MAC side of the PHY (with
inband status) is connected to the switch through QSGMII, and in this context
we are on the media side of the PHY. >>
https://lkml.org/lkml/2015/7/10/206

This patch introduces the new string property 'managed' that allows
the user to set the management type explicitly.
The supported values are:
"auto" - default. Uses either MDIO or nothing, depending on the presence
of the fixed-link node
"in-band-status" - use in-band status

Signed-off-by: Stas Sergeev <stsp@users.sourceforge.net>

CC: Rob Herring <robh+dt@kernel.org>
CC: Pawel Moll <pawel.moll@arm.com>
CC: Mark Rutland <mark.rutland@arm.com>
CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
CC: Kumar Gala <galak@codeaurora.org>
CC: Florian Fainelli <f.fainelli@gmail.com>
CC: Grant Likely <grant.likely@linaro.org>
CC: devicetree@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-07-21 16:12:55 -07:00
..
ABI platform-drivers-x86 got 4.2 2015-07-01 18:55:34 -07:00
DocBook Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2015-06-26 13:18:51 -07:00
EDID
PCI The documentation tree update for 4.1. Numerous fixes, the overdue removal 2015-04-18 11:10:49 -04:00
RCU Documentation updates for 4.2 2015-06-24 20:01:36 -07:00
accounting
acpi
aoe
arm Allwinner late changes for 4.2 2015-07-09 15:08:44 -07:00
arm64
auxdisplay
backlight
blackfin
block
blockdev zram: add dynamic device add/remove functionality 2015-06-25 17:00:36 -07:00
bus-devices
cdrom
cgroups Merge branch 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2015-06-26 19:50:04 -07:00
cma
connector
console
cpu-freq Documentation updates for 4.2 2015-06-24 20:01:36 -07:00
cpuidle
cris
crypto
development-process
device-mapper
devicetree of_mdio: add new DT property 'managed' to specify the PHY management type 2015-07-21 16:12:55 -07:00
dmaengine Merge branch 'topic/pxa' into for-linus 2015-06-25 09:21:58 +05:30
driver-model
dvb
early-userspace
extcon
fault-injection
fb
features
filesystems Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-07-04 19:36:06 -07:00
firmware_class
fmc
frv
gpio Documentation updates for 4.2 2015-06-24 20:01:36 -07:00
hid
hwmon hwmon: Document which I2C addresses can be probed 2015-07-03 14:39:05 +02:00
i2c Merge branch 'i2c/for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2015-06-25 18:42:39 -07:00
ia64 virtual: Documentation: simplify and generalize paravirt_ops.txt 2015-02-13 17:15:44 +10:30
ide
infiniband
input Doc: Change wikipedia's URL from http to https 2015-06-22 10:14:05 -06:00
ioctl fuse: device fd clone 2015-07-01 16:26:08 +02:00
isdn
ja_JP
kbuild kbuild : Fix documentation of INSTALL_HDR_PATH 2015-06-22 09:56:07 -06:00
kdump kernel: add panic_on_warn 2014-12-10 17:41:10 -08:00
ko_KR Documentation: HOWTO: Updates on subsystem trees, patchwork, -next (vs. -mm) in ko_KR 2014-01-08 15:32:51 -08:00
laptops
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2015-07-01 19:09:11 -07:00
locking
m68k
memory-devices
metag
mic Char/Misc driver patches for 4.2-rc1 2015-06-26 14:51:15 -07:00
mips
misc-devices Pratyush Anand has moved 2015-06-25 17:00:38 -07:00
mmc
mn10300
mtd
namespaces
netlabel
networking Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue 2015-07-20 20:50:19 -07:00
nfc
nios2
nvdimm libnvdimm: Non-Volatile Devices 2015-06-26 11:23:38 -04:00
parisc
pcmcia Documentation: use subdir-y to avoid unnecessary built-in.o files 2014-09-26 11:02:55 +02:00
phy
platform
power PM / hibernate: clarify resume documentation 2015-07-07 01:18:11 +02:00
powerpc
pps Doc:pps: Fix typo in pps.txt 2015-06-22 09:59:28 -06:00
prctl Documentation/prctl: don't build tsc tests when cross compiling 2015-06-22 16:05:04 -06:00
pti
ptp
rapidio
s390
scheduler
scsi Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block 2015-06-25 15:22:36 -07:00
security
serial
sh sh: clkfwk: Kill off unused clk_set_rate_ex(). 2010-11-15 18:25:12 +09:00
sound
spi
sysctl coredump: use from_kuid/kgid when formatting corename 2015-06-25 17:00:43 -07:00
target Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2015-07-04 14:13:43 -07:00
thermal
timers
tpm
trace
usb USB patches for 4.2-rc1 2015-06-26 15:59:26 -07:00
vDSO Documentation/vDSO: don't build tests when cross compiling 2015-06-22 16:04:57 -06:00
video4linux
virtual
vm zswap: runtime enable/disable 2015-06-25 17:00:37 -07:00
w1 w1: Add support for DS28EA00 sequence to w1-therm 2015-05-24 12:08:59 -07:00
watchdog watchdog: omap_wdt: early_enable module parameter 2015-07-01 16:43:17 +02:00
wimax i2400m: documentation and instructions for usage 2009-01-07 10:00:18 -08:00
x86 x86/asm/entry/64: Update path names 2015-07-02 11:08:50 +02:00
xtensa
zh_CN Documentation updates for 4.2 2015-06-24 20:01:36 -07:00
00-INDEX
BUG-HUNTING
Changes
CodeOfConflict
CodingStyle
DMA-API-HOWTO.txt Documentation updates for 4.2 2015-06-24 20:01:36 -07:00
DMA-API.txt
DMA-ISA-LPC.txt
DMA-attributes.txt
HOWTO
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt
IRQ.txt
Intel-IOMMU.txt
Makefile
ManagementStyle
SAK.txt
SM501.txt
SecurityBugs
SubmitChecklist
SubmittingDrivers
SubmittingPatches
VGA-softcursor.txt
applying-patches.txt
assoc_array.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
bcache.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
bus-virt-phys-mapping.txt
cachetlb.txt
circular-buffers.txt
clk.txt
coccinelle.txt
cpu-hotplug.txt
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt Doc: Change wikipedia's URL from http to https 2015-06-22 10:14:05 -06:00
dell_rbu.txt
devices.txt
digsig.txt
dma-buf-sharing.txt
dontdiff
dynamic-debug-howto.txt
edac.txt EDAC: Update Documentation/edac.txt 2015-06-24 18:17:40 +02:00
efi-stub.txt
eisa.txt
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gdb-kernel-debugging.txt
highuid.txt
hsi.txt
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
intel_txt.txt
io-mapping.txt
io_ordering.txt
iostats.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kasan.txt
kernel-doc-nano-HOWTO.txt
kernel-docs.txt
kernel-parameters.txt Additional ACPICA material for v4.2-rc1 2015-07-02 17:11:28 -07:00
kernel-per-CPU-kthreads.txt
kmemcheck.txt
kmemleak.txt Doc: Change wikipedia's URL from http to https 2015-06-22 10:14:05 -06:00
kobject.txt
kprobes.txt
kref.txt
kselftest.txt
ldm.txt
local_ops.txt
lockup-watchdogs.txt watchdog: add watchdog_cpumask sysctl to assist nohz 2015-06-24 17:49:40 -07:00
logo.gif
logo.txt
lzo.txt
magic-number.txt
mailbox.txt
md-cluster.txt
md.txt doc:md: fix typo in md.txt. 2015-06-23 06:49:44 -06:00
media-framework.txt
memory-barriers.txt Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-06-22 14:54:22 -07:00
memory-hotplug.txt
module-signing.txt
mono.txt
nommu-mmap.txt
ntb.txt NTB: Rename Intel code names to platform names 2015-07-04 14:09:25 -04:00
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt phy: core: Add devm_of_phy_get_by_index to phy-core 2015-05-11 21:42:23 +05:30
pi-futex.txt
pinctrl.txt
pnp.txt
preempt-locking.txt
printk-formats.txt
pwm.txt
ramoops.txt
rbtree.txt
remoteproc.txt
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt
rtc.txt
serial-console.txt
sgi-ioc4.txt
smsc_ece1099.txt
sparse.txt
stable_api_nonsense.txt
stable_kernel_rules.txt
static-keys.txt
svga.txt
sysfs-rules.txt
sysrq.txt
this_cpu_ops.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt
xillybus.txt
xz.txt
zorro.txt