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

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Date:   Wed, 19 Jun 2019 20:35:27 -0700
From:   Kevin Hilman <khilman@...libre.com>
To:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-amlogic@...ts.infradead.org
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: Re: [PATCH v3 0/4] Ethernet PHY reset GPIO updates for Amlogic SoCs

Martin Blumenstingl <martin.blumenstingl@...glemail.com> writes:

> 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/

Queued for v5.3...

> 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

...in branch v5.3/dt

>   arm64: dts: meson: use the generic Ethernet PHY reset GPIO bindings
>   arm64: dts: meson: g12b: odroid-n2: add the Ethernet PHY reset line

The other 3 in v5.3/dt64,

Thanks,

Kevin