linux-kernel - Re: [PATCH 03/22] clk: mediatek: Fix corner case of tuner_en

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Message-ID: <CAGXv+5F2zTcqnjH2ud38vUD149KJtgxhPQME2Mk6-vGtQv+2YQ@mail.gmail.com>
Date:   Wed, 30 Jun 2021 15:31:24 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Chun-Jie Chen <chun-jie.chen@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, srv_heupstream@...iatek.com,
        Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH 03/22] clk: mediatek: Fix corner case of tuner_en_reg

On Thu, Jun 17, 2021 at 7:01 AM Chun-Jie Chen
<chun-jie.chen@...iatek.com> wrote:
>
> On MT8195, tuner_en_reg is moved to register offest 0x0.
> If we only judge by tuner_en_reg, it may lead to wrong address.
> Add tuner_en_bit to the check condition. And it has been confirmed,
> on all the MediaTek SoCs, bit0 of offset 0x0 is always occupied by
> clock square control.
>
> Signed-off-by: Chun-Jie Chen <chun-jie.chen@...iatek.com>

Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>

Though you might want to consider converting these types of checks into feature
flags.