linux-kernel - Re: [PATCH 0/2] ARM: dts: am335x: add rtc system-power-controller

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Date:   Tue, 19 Oct 2021 14:57:16 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Drew Fustini <dfustini@...libre.com>
Cc:     Dave Gerlach <d-gerlach@...com>, Keerthy <j-keerthy@...com>,
        Jason Kridner <jkridner@...gleboard.org>,
        Benoit Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] ARM: dts: am335x: add rtc system-power-controller

On Mon, Oct 18, 2021 at 03:00:18PM -0700, Drew Fustini wrote:
> Johan pointed out when I submitted "ARM: dts: am335x: Add rtc node as
> system-power-controller" [1] that mentioning am335x-evm and boneblack
> in the commit message was incorrect. system-power-controller is already
> present in am335x-boneblack-common.dtsi and am335x-evm would need the
> property added directly to the dts file.
> 
> These are the dts files that currently include either
> am335x-bone-common.dtsi or am335x-boneblack-common.dtsi:
> 
>     am335x-bone.dts
> 	am335x-bone-common.dtsi
> 
>     am335x-boneblack.dts
>         am335x-bone-common.dtsi
> 	am335x-boneblack-common.dtsi
> 
>     am335x-boneblack-wireless.dts
> 	am335x-bone-common.dtsi
> 	am335x-boneblack-common.dtsi
> 
>     am335x-bonegreen.dts
> 	am335x-bone-common.dtsi
> 
>     am335x-bonegreen-wireless.dts
> 	am335x-bone-common.dtsi
> 
>     am335x-sancloud-bbe.dts
> 	am335x-bone-common.dtsi
> 	am335x-boneblack-common.dtsi
> 
>     am335x-sancloud-bbe-lite.dts
> 	am335x-bone-common.dtsi
> 	am335x-boneblack-common.dtsi
> 
> am335x-boneblack, am335x-boneblack-wireless, am335x-sancloud-bbe and
> am335x-sancloud-bbe-lite currently get the system-power-controller
> property from am335x-boneblack-common.dtsi. Moving that property to
> am335x-bone-common.dtsi would have no change for these boards as they
> include that dtsi file too.
> 
> This change would result in the addition of system-power-controller
> to bone, bonegreen and bonegreen-wireless. These boards all have
> PMIC_POWR_EN (ZCZ ball C6) connected to PWR_EN on the TPS65217B PMIC.
> Thus system-power-controller is a valid property for them too.
> 
> In addition to BeagleBone, I have reviewed the TI AM335x eval boards:
> 
> am335x-evm.dts should _not_ have the system-power-controller property as
> the PMIC_POWER_EN is not connected on the TMDXEVM3358 board [2]. The
> ball would be connected to SLEEP (pin 37) on the TPS65910A3 PMIC but R65
> is marked as do not populate.
> 
> am335x-evmsk.dts should _not_ have system-power-controller property as
> PMIC_POWER_EN is not connected on the TMDSSK3358 board [3].
> 
> am335x-icev2.dts should have the system-power-controller property as the
> PMIC_POWER_EN (ZCZ ball C6) is connected to PWRHOLD (pin 1) of the
> TPS65910A3 PMIC on the TMDSICE3359 board [4].
>
> Cc: Jason Kridner <jkridner@...gleboard.org>
> Cc: Dave Gerlach <d-gerlach@...com>
> Cc: Keerthy <j-keerthy@...com>
> Cc: Johan Hovold <johan@...nel.org>
> 
> [1] https://lore.kernel.org/linux-omap/20211012191311.879838-1-dfustini@baylibre.com/
> [2] https://www.ti.com/tool/TMDXEVM3358
> [3] https://www.ti.com/tool/TMDSSK3358
> [4] https://www.ti.com/tool/TMDSICE3359
> 
> 
> Drew Fustini (2):
>   ARM: dts: am335x-boneblack-common: move system-power-controller
>   ARM: dts: am335x-icev2: Add system-power-controller to RTC node

Nice work. I trust your review of the schematics, and only
double-checked sancloud-bbe. The patches look good.

For the series:

Reviewed-by: Johan Hovold <johan@...nel.org>

Johan