linux-kernel - Re: arm64: dts: rockchip: Disable HS400 for mmc on rk3399-roc-pc

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Date:   Mon, 18 Nov 2019 02:01:16 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     Markus Reichl <m.reichl@...etechno.de>
Cc:     Christoph Muellner <christoph.muellner@...obroma-systems.com>,
        robh+dt@...nel.org, mark.rutland@....com, shawn.lin@...k-chips.com,
        devicetree@...r.kernel.org, Jeffy Chen <jeffy.chen@...k-chips.com>,
        linux-kernel@...r.kernel.org,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Brian Norris <briannorris@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        Vicente Bergas <vicencb@...il.com>,
        Kishon Vijay Abraham I <kishon@...com>,
        linux-rockchip@...ts.infradead.org,
        Tony Xie <tony.xie@...k-chips.com>,
        Klaus Goger <klaus.goger@...obroma-systems.com>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Randy Li <ayaka@...lik.info>,
        Philipp Tomsich <philipp.tomsich@...obroma-systems.com>,
        Ezequiel Garcia <ezequiel@...labora.com>,
        linux-arm-kernel@...ts.infradead.org,
        "linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>
Subject: Re: arm64: dts: rockchip: Disable HS400 for mmc on rk3399-roc-pc

Am Montag, 11. November 2019, 10:51:04 CET schrieb Markus Reichl:
> Working with rootfs on two 128GB mmcs on rk3399-roc-pc.
> 
> One (mmc name 128G72, one screw hole) works fine in HS400 mode.
> Other (mmc name DJNB4R, firefly on pcb, two screw holes) gets lots of
> mmc1: "running CQE recovery", even hangs with damaged fs,
> when running under heavy load, e.g. compiling kernel.
> Both run fine with HS200.
> 
> Disabling CQ with patch mmc: core: Add MMC Command Queue Support kernel parameter [0] did not help.
> [0] https://gitlab.com/ayufan-repos/rock64/linux-mainline-kernel/commit/54e264154b87dfe32a8359b2726e2d5611adbaf3
> 
> Therefore I propose to disable HS400 mode on roc-pc for now.
> 
> Signed-off-by: Markus Reichl <m.reichl@...etechno.de>

applied for 5.6 (or maybe still 5.5)

Thanks
Heiko