linux/Documentation
Sean Anderson 045d05018a dt-bindings: net: fman: Add additional interface properties
At the moment, mEMACs are configured almost completely based on the
phy-connection-type. That is, if the phy interface is RGMII, it assumed
that RGMII is supported. For some interfaces, it is assumed that the
RCW/bootloader has set up the SerDes properly. This is generally OK, but
restricts runtime reconfiguration. The actual link state is never
reported.

To address these shortcomings, the driver will need additional
information. First, it needs to know how to access the PCS/PMAs (in
order to configure them and get the link status). The SGMII PCS/PMA is
the only currently-described PCS/PMA. Add the XFI and QSGMII PCS/PMAs as
well. The XFI (and 10GBASE-KR) PCS/PMA is a c45 "phy" which sits on the
same MDIO bus as SGMII PCS/PMA. By default they will have conflicting
addresses, but they are also not enabled at the same time by default.
Therefore, we can let the XFI PCS/PMA be the default when
phy-connection-type is xgmii. This will allow for
backwards-compatibility.

QSGMII, however, cannot work with the current binding. This is because
the QSGMII PCS/PMAs are only present on one MAC's MDIO bus. At the
moment this is worked around by having every MAC write to the PCS/PMA
addresses (without checking if they are present). This only works if
each MAC has the same configuration, and only if we don't need to know
the status. Because the QSGMII PCS/PMA will typically be located on a
different MDIO bus than the MAC's SGMII PCS/PMA, there is no fallback
for the QSGMII PCS/PMA.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-19 13:25:09 +01:00
..
ABI VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
accounting filemap: make the accounting of thrashing more consistent 2022-09-26 19:46:06 -07:00
admin-guide xen: branch for v6.1-rc1 2022-10-12 14:39:38 -07:00
arc
arm EFI updates for v6.1 2022-10-09 08:56:54 -07:00
arm64 Merge branches 'for-next/doc', 'for-next/sve', 'for-next/sysreg', 'for-next/gettimeofday', 'for-next/stacktrace', 'for-next/atomics', 'for-next/el1-exceptions', 'for-next/a510-erratum-2658417', 'for-next/defconfig', 'for-next/tpidr2_el0' and 'for-next/ftrace', remote-tracking branch 'arm64/for-next/perf' into for-next/core 2022-09-30 09:17:57 +01:00
block Documentation: document ublk 2022-09-02 09:31:15 -06:00
bpf Networking changes for 6.1. 2022-10-04 13:38:03 -07:00
cdrom
core-api - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
cpu-freq
crypto
dev-tools linux-kselftest-kunit-6.1-rc1-2 2022-10-12 15:01:58 -07:00
devicetree dt-bindings: net: fman: Add additional interface properties 2022-10-19 13:25:09 +01:00
doc-guide Rust introduction for v6.1-rc1 2022-10-03 16:39:37 -07:00
driver-api VFIO updates for v6.1-rc1 2022-10-12 14:46:48 -07:00
fault-injection docs: notifier-error-inject: Correct test's name 2022-10-07 10:32:16 -06:00
fb Documentation: fb: udlfb: clean up text and formatting 2022-09-27 13:21:44 -06:00
features
filesystems A quiet round this time: several assorted filesystem fixes, the most 2022-10-13 10:21:37 -07:00
firmware_class
firmware-guide Merge branches 'acpi-misc', 'acpi-tools' and 'acpi-docs' 2022-10-03 20:03:49 +02:00
fpga
gpu Immutable backlight-detect-refactor branch between acpi, drm-* and pdx86 2022-09-14 12:27:10 +01:00
hid
hwmon hwmon: (corsair-psu) add USB id of new revision of the HX1000i psu 2022-10-02 14:38:55 -07:00
i2c docs: i2c: slave-interface: return errno when handle I2C_SLAVE_WRITE_REQUESTED 2022-09-28 21:41:59 +02:00
ia64
iio docs: iio: add documentation for BNO055 driver 2022-09-21 18:42:56 +01:00
images
infiniband
input Merge branch 'next' into for-linus 2022-10-09 22:30:23 -07:00
isdn
kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
kernel-hacking
leds
litmus-tests
livepatch
locking Remove duplicate words inside documentation 2022-09-27 13:21:43 -06:00
loongarch
m68k
maintainer
mhi
mips
misc-devices
mm - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in 2022-10-10 17:53:04 -07:00
netlabel
networking docs: networking: phy: add missing space 2022-10-05 20:32:39 -07:00
nios2
nvdimm
openrisc
parisc
PCI
pcmcia
peci
power
powerpc powerpc/64s: update cpu selection options 2022-09-28 19:22:10 +10:00
process Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
RCU There's not a huge amount of activity in the docs tree this time around, 2022-10-03 10:23:32 -07:00
riscv
rust x86: enable initial Rust support 2022-09-28 09:02:45 +02:00
s390 vfio/mdev: embedd struct mdev_parent in the parent data structure 2022-10-04 12:06:58 -06:00
scheduler docs: scheduler: Update new path for the sysctl knobs 2022-09-27 13:21:42 -06:00
scsi scsi: docs: Fix a typo 2022-09-01 00:33:34 -04:00
security landlock: Fix documentation style 2022-09-29 18:43:04 +02:00
sh
sound
sparc
sphinx
sphinx-static
spi
staging docs: put atomic*.txt and memory-barriers.txt into the core-api book 2022-09-29 12:55:06 -06:00
target
timers
tools
trace perf tools changes for v6.1: 1st batch 2022-10-11 15:02:25 -07:00
translations Driver core changes for 6.1-rc1 2022-10-07 17:04:10 -07:00
usb
userspace-api media updates for v6.1-rc1 2022-10-07 11:04:35 -07:00
virt ARM: 2022-10-11 20:07:44 -07:00
w1 Documentation: W1: minor typo corrections 2022-09-27 13:21:44 -06:00
watchdog
x86 - Get rid of a single ksize() usage 2022-10-04 10:12:08 -07:00
xtensa
.gitignore
arch.rst
atomic_bitops.txt
atomic_t.txt
Changes
CodingStyle
conf.py There's not a huge amount of activity in the docs tree this time around, 2022-10-03 10:23:32 -07:00
docutils.conf
dontdiff
index.rst Rust introduction for v6.1-rc1 2022-10-03 16:39:37 -07:00
Kconfig
Makefile
memory-barriers.txt docs/memory-barriers.txt: Fixup long lines 2022-08-31 05:15:31 -07:00
SubmittingPatches
subsystem-apis.rst docs: Rewrite the front page 2022-09-29 12:55:06 -06:00