On Fri, May 25, 2018 at 08:10:47PM -0700, John Stultz wrote:
> This patch is a partial revert of commit
> abd7d0972a19 ("arm64: dts: hikey: Enable HS200 mode on eMMC")
>
> which has been causing eMMC corruption on my HiKey board.
>
> Symptoms usually looked like:
>
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> ...
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc0: new HS200 MMC card at address 0001
> ...
> dwmmc_k3 f723d000.dwmmc0: Unexpected command timeout, state 3
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> print_req_error: I/O error, dev mmcblk0, sector 8810504
> Aborting journal on device mmcblk0p10-8.
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> mmc_host mmc0: Bus speed (slot 0) = 24800000Hz (slot req 400000Hz, actual
> 400000HZ div = 31)
> mmc_host mmc0: Bus speed (slot 0) = 148800000Hz (slot req 150000000Hz, actual
> 148800000HZ div = 0)
> EXT4-fs error (device mmcblk0p10): ext4_journal_check_start:61: Detected
> aborted journal
> EXT4-fs (mmcblk0p10): Remounting filesystem read-only
>
> And quite often this would result in a disk that wouldn't properly
> boot even with older kernels.
I tested this patch on the kernel 4.17.0-rc5, I don't see booting
issue with this patch.
Tested-by: Leo Yan <leo....@linaro.org>
> It seems the max-frequency property added by the above patch is
> causing the problem, so remove it.
Should Cc this patch to stable kernel mailing list as fixing?
> Cc: Ryan Grachek <r...@edited.us>
> Cc: Wei Xu <xuw...@hisilicon.com>
> Cc: Arnd Bergmann <a...@arndb.de>
> Cc: Ulf Hansson <ulf.hans...@linaro.org>
> Cc: YongQin Liu <yongqin....@linaro.org>
> Cc: Leo Yan <leo....@linaro.org>
> Signed-off-by: John Stultz <john.stu...@linaro.org>
> ---
> arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
> b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
> index 724a0d3..edb4ee0 100644
> --- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
> +++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
> @@ -299,7 +299,6 @@
> /* GPIO blocks 16 thru 19 do not appear to be routed to pins */
>
> dwmmc_0: dwmmc0@f723d000 {
> - max-frequency = <150000000>;
> cap-mmc-highspeed;
> mmc-hs200-1_8v;
> non-removable;
> --
> 2.7.4
>
