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Message-ID: <2126178.C4sosBPzcN@diego>
Date:   Thu, 09 Jun 2022 16:56:50 +0200
From:   Heiko Stübner <heiko@...ech.de>
To:     Maya Matuszczyk <maccraft123mc@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        arm@...nel.org, soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree <devicetree@...r.kernel.org>,
        arm-mail-list <linux-arm-kernel@...ts.infradead.org>,
        "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 32/48] arm64: dts: rockchip: align gpio-key node names with dtschema

Am Donnerstag, 9. Juni 2022, 16:15:25 CEST schrieb Krzysztof Kozlowski:
> On 09/06/2022 15:57, Maya Matuszczyk wrote:
> > czw., 9 cze 2022 o 13:56 Krzysztof Kozlowski
> > <krzysztof.kozlowski@...aro.org> napisał(a):
> >>
> >> The node names should be generic and DT schema expects certain pattern
> >> (e.g. with key/button/switch).
> >>
> >> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >> ---
> >>  arch/arm64/boot/dts/rockchip/rk3308-evb.dts   |  2 +-
> >>  .../boot/dts/rockchip/rk3326-odroid-go2.dts   | 32 +++++++++----------
> >>  .../boot/dts/rockchip/rk3328-nanopi-r2s.dts   |  2 +-
> >>  arch/arm64/boot/dts/rockchip/rk3368-evb.dtsi  |  2 +-
> >>  .../boot/dts/rockchip/rk3368-geekbox.dts      |  2 +-
> >>  .../dts/rockchip/rk3368-orion-r68-meta.dts    |  2 +-
> >>  .../boot/dts/rockchip/rk3368-px5-evb.dts      |  2 +-
> >>  arch/arm64/boot/dts/rockchip/rk3368-r88.dts   |  2 +-
> >>  .../boot/dts/rockchip/rk3399-firefly.dts      |  2 +-
> >>  .../dts/rockchip/rk3399-gru-chromebook.dtsi   |  2 +-
> >>  .../boot/dts/rockchip/rk3399-gru-kevin.dts    |  2 +-
> >>  .../boot/dts/rockchip/rk3399-gru-scarlet.dtsi |  2 +-
> >>  .../boot/dts/rockchip/rk3399-khadas-edge.dtsi |  2 +-
> >>  .../boot/dts/rockchip/rk3399-nanopi-r4s.dts   |  4 +--
> >>  .../boot/dts/rockchip/rk3399-nanopi4.dtsi     |  2 +-
> >>  .../boot/dts/rockchip/rk3399-orangepi.dts     |  2 +-
> >>  .../boot/dts/rockchip/rk3399-pinebook-pro.dts |  4 +--
> >>  .../boot/dts/rockchip/rk3399-roc-pc.dtsi      |  2 +-
> >>  .../boot/dts/rockchip/rk3399-rockpro64.dtsi   |  2 +-
> >>  .../boot/dts/rockchip/rk3399-sapphire.dtsi    |  2 +-
> >>  .../boot/dts/rockchip/rk3566-pinenote.dtsi    |  2 +-
> >>  21 files changed, 38 insertions(+), 38 deletions(-)
> >>
> >> diff --git a/arch/arm64/boot/dts/rockchip/rk3308-evb.dts b/arch/arm64/boot/dts/rockchip/rk3308-evb.dts
> >> index 9b4f855ea5d4..4b5413b12bfa 100644
> >> --- a/arch/arm64/boot/dts/rockchip/rk3308-evb.dts
> >> +++ b/arch/arm64/boot/dts/rockchip/rk3308-evb.dts
> >> @@ -75,7 +75,7 @@ gpio-keys {
> >>                 pinctrl-names = "default";
> >>                 pinctrl-0 = <&pwr_key>;
> >>
> >> -               power {
> >> +               power-key {

hmm, it looks like all the others below are named key-power, while
only this uses power-key ?


> >>                         gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>;
> >>                         linux,code = <KEY_POWER>;
> >>                         label = "GPIO Key Power";
> >> diff --git a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
> >> index ea0695b51ecd..72328dd993ee 100644
> >> --- a/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
> >> +++ b/arch/arm64/boot/dts/rockchip/rk3326-odroid-go2.dts
> >> @@ -71,82 +71,82 @@ gpio-keys {
> >>                  * |------------------------------------------------|
> >>                  */
> >>
> >> -               sw1 {
> >> +               switch-1 {
> > Wouldn't it make more sense to rename this and all other
> > renamed nodes in this dts into "button-dpad-up" or "button-1",
> > as on the physical device those are buttons and the naming
> > scheme of "sw" + number seems to be a carryover from
> > downstream sources.

The naming actually carries over from the device itself.
In the schematics the relevant keys are also named sw1, sw2, etc.

And I do believe it is way nicer when devicetree names correspond to the
things you find in device schematics and not be named "arbitarily" to
only conform to some schema ;-)

So personally I'd actually prefer going with switch-sw1 (or button-sw1 if
you prefer) as being able to just use the search function in schematic pdfs
is a helpful tool.


Heiko

> Can be buttons. I assumed SW comes from some kind of switch.
> I assume you mean only this Odroid Go2 DTS, because some other DTSes
> (like EVB above) explicitly call it "Key Power".
> 
> 
> Best regards,
> Krzysztof
> 




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