linux-kernel - Re: [PATCH] pinctrl: sh-pfc: r8a77990: Fix IOCTRL reg state after s2ram on R-Car E3

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Message-ID: <20181215152337.km3rr2sx36gkuc7b@verge.net.au>
Date:   Sat, 15 Dec 2018 16:23:38 +0100
From:   Simon Horman <horms@...ge.net.au>
To:     Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Marek Vasut <marek.vasut+renesas@...il.com>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Fabrizio Castro <fabrizio.castro@...renesas.com>,
        linux-renesas-soc@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pinctrl: sh-pfc: r8a77990: Fix IOCTRL reg state after
 s2ram on R-Car E3

On Thu, Dec 13, 2018 at 05:20:27PM +0100, Geert Uytterhoeven wrote:
> Due to an interaction with commit 9f2b76a2db3c4387 ("pinctrl: sh-pfc:
> r8a77990: Add R8A774C0 PFC support"), the state of the I/O Control
> Registers is saved/restored during s2ram on RZ/G2E, but not on R-Car E3.
> Hence on R-Car E3, SDHI voltage state is lost after system resume.
> 
> Fix this by registering the I/O Control Registers on R-Car E3, too.
> 
> Fixes: 33847a71373cd6ae ("pinctrl: sh-pfc: r8a77990: Add voltage switch operations for SDHI")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
> To be queued as a fix in sh-pfc-for-v4.21.

Reviewed-by: Simon Horman <horms+renesas@...ge.net.au>