linux-kernel - Re: [PATCH 2/2] ARM: DTS: Add devicetree file for the Galaxy S2

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Message-ID: <6c549058-00f9-8526-a272-48c538166ccf@samsung.com>
Date:   Tue, 31 Mar 2020 07:36:39 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     Paul Cercueil <paul@...pouillou.net>,
        Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Kukjin Kim <kgene@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Stenkin Evgeniy <stenkinevgeniy@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ARM: DTS: Add devicetree file for the Galaxy S2

Hi Paul,

On 2020-03-18 15:25, Paul Cercueil wrote:
>>>  +    };
>>>  +
>>>  +    tsp_reg: regulator-1 {
>>>  +        compatible = "regulator-fixed";
>>>  +        regulator-name = "TSP_FIXED_VOLTAGES";
>>>  +        regulator-min-microvolt = <3300000>;
>>>  +        regulator-max-microvolt = <3300000>;
>>>  +        gpio = <&gpl0 3 GPIO_ACTIVE_HIGH>;
>>>  +        startup-delay-us = <70000>;
>>>  +        enable-active-high;
>>>  +        regulator-boot-on;
>>>  +        regulator-always-on;
>>
>> always-on and boot-on should not be needed. You have a consumer for this
>> regulator.
>
> About this: the touchscreen driver does not use a regulator, so I 
> believe that's why these properties were here.
>
> I sent patches upstream to address the issue: 
> https://lkml.org/lkml/2020/3/15/94
>
> I believe this means I cannot merge the i9100 devicetree until it is 
> acked.

One more information - similar change has been already posted, but it 
looks it got lost then: https://patchwork.kernel.org/patch/10550903/

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland