On Tue, Aug 5, 2014 at 11:26 AM, Jean-Michel Hautbois
<jean-michel.hautbois@xxxxxxxxxxx> wrote:
> Hi all,
>
> I have a custom board based on a i.MX6 SoC and it has a Sandisk eMMC
> (SDIN5D1-2G).
> When booting a vanilla kernel, I get lots of I/O errors.
> Before investigating, I would like to know if this is a known issue.
>
> Here is the full dmesg :
>
> [ 1.346762] mmcblk1: mmc1:0001 SEM02G 1.82 GiB
> [ 1.350142] mmcblk1boot0: mmc1:0001 SEM02G partition 1 1.00 MiB
> [ 1.354901] mmcblk1boot1: mmc1:0001 SEM02G partition 2 1.00 MiB
> [ 1.359643] mmcblk1rpmb: mmc1:0001 SEM02G partition 3 128 KiB
> [ 1.366291] mmcblk1: error -84 transferring data, sector 0, nr 8,
> cmd response 0x900, card status 0xb00
Just tested on a imx6q-sabresd running kernel 3.16 and it detects the
eMMC without errors:
mmcblk1: mmc2:0001 SEM08G 7.39 GiB
mmcblk1boot0: mmc2:0001 SEM08G partition 1 2.00 MiB
mmcblk1boot1: mmc2:0001 SEM08G partition 2 2.00 MiB
mmcblk1rpmb: mmc2:0001 SEM08G partition 3 128 KiB
In imx6qdl-sabresd.dtsi we have:
&usdhc4 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc4>;
bus-width = <8>;
non-removable;
no-1-8-v;
status = "okay";
};
Also, please check your esdhc pinmux settings.
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