linux-kernel - [PATCH v3 0/4] Ethernet PHY reset GPIO updates for Amlogic SoCs

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Date:   Sat, 15 Jun 2019 12:38:28 +0200
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     linux-amlogic@...ts.infradead.org, khilman@...libre.com
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org, linus.walleij@...aro.org, andrew@...n.ch,
        robin.murphy@....com, narmstrong@...libre.com,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Subject: [PATCH v3 0/4] Ethernet PHY reset GPIO updates for Amlogic SoCs

While trying to add the Ethernet PHY interrupt on the X96 Max I found
that the current reset line definition is incorrect. Patch #1 fixes
this.

Since the fix requires moving from the deprecated "snps,reset-gpio"
property to the generic Ethernet PHY reset bindings I decided to move
all Amlogic boards over to the non-deprecated bindings. That's what
patches #2 and #3 do.

Finally I found that Odroid-N2 doesn't define the Ethernet PHY's reset
GPIO yet. I don't have that board so I can't test whether it really
works but based on the schematics it should. 

This series is a partial successor to "stmmac: honor the GPIO flags
for the PHY reset GPIO" from [0]. I decided not to take Linus W.'s
Reviewed-by from patch #4 of that series because I had to change the
wording and I want to be sure that he's happy with that now.

One quick note regarding patches #1 and #4: I decided to violate the
"max 80 characters per line" (by 4 characters) limit because I find
that the result is easier to read then it would be if I split the
line.


Changes since v1 at [1]:
- fixed the reset deassert delay for RTL8211F PHYs - spotted by Robin
  Murphy (thank you). according to the public RTL8211E datasheet the
  correct values seem to be: 10ms assert, 30ms deassert
- fixed the reset assert and deassert delays for IP101GR PHYs. There
  are two values given in the public datasheet, use the higher one
  (10ms instead of 2.5)
- update the patch descriptions to quote the datasheets (the RTL8211F
  quotes are taken from the public RTL8211E datasheet because as far
  as I can tell the reset sequence is identical on both PHYs)

Changes since v2 at [2]:
- add Neil's Reviewed/Acked/Tested-by's (thank you!)
- rebased on top of "arm64: dts: meson-g12a-x96-max: add sound card"


[0] https://patchwork.kernel.org/cover/10983801/
[1] https://patchwork.kernel.org/cover/10985155/
[2] https://patchwork.kernel.org/cover/10990863/


Martin Blumenstingl (4):
  arm64: dts: meson: g12a: x96-max: fix the Ethernet PHY reset line
  ARM: dts: meson: switch to the generic Ethernet PHY reset bindings
  arm64: dts: meson: use the generic Ethernet PHY reset GPIO bindings
  arm64: dts: meson: g12b: odroid-n2: add the Ethernet PHY reset line

 arch/arm/boot/dts/meson8b-ec100.dts                   |  9 +++++----
 arch/arm/boot/dts/meson8b-mxq.dts                     |  9 +++++----
 arch/arm/boot/dts/meson8b-odroidc1.dts                |  9 +++++----
 arch/arm/boot/dts/meson8m2-mxiii-plus.dts             |  8 ++++----
 arch/arm64/boot/dts/amlogic/meson-g12a-x96-max.dts    |  7 ++++---
 arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts  |  4 ++++
 arch/arm64/boot/dts/amlogic/meson-gxbb-nanopi-k2.dts  |  9 +++++----
 .../arm64/boot/dts/amlogic/meson-gxbb-nexbox-a95x.dts |  8 ++++----
 arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts   |  9 +++++----
 arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts       |  9 +++++----
 arch/arm64/boot/dts/amlogic/meson-gxbb-vega-s95.dtsi  |  9 +++++----
 arch/arm64/boot/dts/amlogic/meson-gxbb-wetek.dtsi     |  8 ++++----
 arch/arm64/boot/dts/amlogic/meson-gxl-s905d-p230.dts  | 11 ++++++-----
 arch/arm64/boot/dts/amlogic/meson-gxm-khadas-vim2.dts | 10 +++++-----
 arch/arm64/boot/dts/amlogic/meson-gxm-nexbox-a1.dts   |  8 ++++----
 arch/arm64/boot/dts/amlogic/meson-gxm-q200.dts        | 11 ++++++-----
 arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts    |  8 ++++----
 17 files changed, 80 insertions(+), 66 deletions(-)

-- 
2.22.0