linux-kernel - Re: [PATCH 4/6] arm64: dts: imx8mm-kontron: Use upper case PMIC regulator names

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Date:   Wed, 13 Jul 2022 10:25:33 +0200
From:   Frieder Schrempf <frieder.schrempf@...tron.de>
To:     Heiko Thiery <heiko.thiery@...il.com>,
        Frieder Schrempf <frieder@...s.de>
Cc:     devicetree@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Fabio Estevam <festevam@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: Re: [PATCH 4/6] arm64: dts: imx8mm-kontron: Use upper case PMIC
 regulator names

Am 13.07.22 um 10:15 schrieb Frieder Schrempf:
> Am 13.07.22 um 09:52 schrieb Heiko Thiery:
>> Hi Frieder,
>>
>> Am Mi., 13. Juli 2022 um 09:41 Uhr schrieb Frieder Schrempf <frieder@...s.de>:
>>>
>>> From: Frieder Schrempf <frieder.schrempf@...tron.de>
>>>
>>> Use upper case PMIC regulator names to comply with the bindings.
>>>
>>> Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>
>>> ---
>>>  .../freescale/imx8mm-kontron-n801x-som.dtsi   | 22 +++++++++----------
>>>  1 file changed, 11 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>>> index 2d0661cce89b..2e3d51bbf92e 100644
>>> --- a/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>>> +++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-n801x-som.dtsi
>>> @@ -85,7 +85,7 @@ pca9450: pmic@25 {
>>>
>>>                 regulators {
>>>                         reg_vdd_soc: BUCK1 {
>>> -                               regulator-name = "buck1";
>>> +                               regulator-name = "BUCK1";
>>
>> Wouldn't it be better to use the real signal or voltage rail names
>> used in the schematics?
> 
> Sounds like a good idea, thanks! I will try to include in the next
> version of this patchset.

On the other hand, the bindings stipulate that the regulator-names
should be "^BUCK[1-6]$" and "^LDO[1-5]$". But I admit these names are
not really useful and maybe the bindings should be changed to allow
arbitrary names?