linux-kernel - Re: [PATCH 2/2] clk: qcom: gcc-sc7180: Add 50 MHz clock rate for SDC2

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Date:   Thu, 10 Dec 2020 12:27:45 -0800
From:   Stephen Boyd <sboyd@...nel.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Taniya Das <tdas@...eaurora.org>, vbadigan@...eaurora.org,
        Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] clk: qcom: gcc-sc7180: Add 50 MHz clock rate for SDC2

Quoting Douglas Anderson (2020-12-10 10:22:39)
> 50 MHz is an incredibly common clock rate for SD cards to run at.
> It's "high speed" mode in SD (not very fast these days, but it used to
> be) or:
>   #define HIGH_SPEED_MAX_DTR    50000000
> 
> If we don't support this then older "high speed" cards can only run at
> 25 MHz or at half their normal speed.  There doesn't seem to be any
> reason to skip this clock rate, so add it.
> 
> Fixes: 17269568f726 ("clk: qcom: Add Global Clock controller (GCC) driver for SC7180")
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---

Applied to clk-next