linux-kernel - Re: [PATCH v3 1/5] arm64: dts: exynos5433: TM2/E: Fix wrong information of ldo23 and ldo25

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Message-ID: <20170106085026.5pfwyxt2qipzbjpy@kozik-lap>
Date:   Fri, 6 Jan 2017 10:50:26 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Chanwoo Choi <cw00.choi@...sung.com>
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Jaechul Lee <jcsing.lee@...sung.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Kukjin Kim <kgene@...nel.org>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Andi Shyti <andi.shyti@...sung.com>, beomho.seo@...sung.com,
        galaxyra@...il.com, linux-arm-kernel@...ts.infradead.org,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH v3 1/5] arm64: dts: exynos5433: TM2/E: Fix wrong
 information of ldo23 and ldo25

On Fri, Jan 06, 2017 at 04:20:52PM +0900, Chanwoo Choi wrote:
> On 2017년 01월 06일 16:05, Krzysztof Kozlowski wrote:
> > On Fri, Jan 06, 2017 at 12:59:05PM +0900, Jaechul Lee wrote:
> >> From: Chanwoo Choi <cw00.choi@...sung.com>
> >>
> >> This patch fixes the wrong information of ldo23 and ldo25 on both TM2 and TM2E.
> > 
> > Please describe what is exactly wrong and how it affects the
> > system/user. This is going to the fixes so it needs a good explanation.
> 
> When I posted the patch[1], I refer to the old schematic document of both TM2 and TM2E.
> [1] 01e5d2352152 ("arm64: dts: exynos: Add dts file for Exynos5433-based TM2 board")
> 
> After checking the highest version of schematic document of both TM2 and TM2E,
> there is no difference of ldo23/ldo25 on both TM2 and TM2E.
> - ldo23 is used on TM2/TM2E, but the name/max-microvolt are wrong. 
> - ldo25 isn't used on TM2/TM2E. (not connected)
> 
> Because ldo23 and lod25 are not used on other device in Exynos5433 and TM2 board.
> this patch does not affect the operation to system/user.

If it does not affect anyone (including TM2/TM2E) then this do not have
to be a fix. Am I right?

Best regards,
Krzysztof