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

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Date:   Mon, 18 Oct 2021 15:00:18 -0700
From:   Drew Fustini <dfustini@...libre.com>
To:     Dave Gerlach <d-gerlach@...com>, Keerthy <j-keerthy@...com>,
        Johan Hovold <johan@...nel.org>,
        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
Cc:     Drew Fustini <dfustini@...libre.com>
Subject: [PATCH 0/2] ARM: dts: am335x: add rtc system-power-controller

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

 arch/arm/boot/dts/am335x-bone-common.dtsi      | 1 +
 arch/arm/boot/dts/am335x-boneblack-common.dtsi | 4 ----
 arch/arm/boot/dts/am335x-icev2.dts             | 4 ++++
 3 files changed, 5 insertions(+), 4 deletions(-)

-- 
2.27.0