Hi Dong,
I have tested the following patch to add support for the emmc port on
mx6qsabresd:
--- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
@@ -444,6 +444,21 @@
MX6QDL_PAD_SD3_DAT7__SD3_DATA7 0x17059
>;
};
+
+ pinctrl_usdhc4: usdhc4grp {
+ fsl,pins = <
+ MX6QDL_PAD_SD4_CMD__SD4_CMD 0x17059
+ MX6QDL_PAD_SD4_CLK__SD4_CLK 0x10059
+ MX6QDL_PAD_SD4_DAT0__SD4_DATA0 0x17059
+ MX6QDL_PAD_SD4_DAT1__SD4_DATA1 0x17059
+ MX6QDL_PAD_SD4_DAT2__SD4_DATA2 0x17059
+ MX6QDL_PAD_SD4_DAT3__SD4_DATA3 0x17059
+ MX6QDL_PAD_SD4_DAT4__SD4_DATA4 0x17059
+ MX6QDL_PAD_SD4_DAT5__SD4_DATA5 0x17059
+ MX6QDL_PAD_SD4_DAT6__SD4_DATA6 0x17059
+ MX6QDL_PAD_SD4_DAT7__SD4_DATA7 0x17059
+ >;
+ };
};
gpio_leds {
@@ -535,3 +550,11 @@
wp-gpios = <&gpio2 1 0>;
status = "okay";
};
+
+&usdhc4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc4>;
+ bus-width = <8>;
+ non-removable;
+ status = "okay";
+};
,and this is the result:
mmc2: new high speed DDR MMC card at address 0001
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
mmcblk1: error -110 sending stop command, original cmd response 0x900, card sta0
mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card 0
mmcblk1: retrying using single block read
mmcblk1: error -84 transferring data, sector 0, nr 8, cmd response 0x900, card 0
end_request: I/O error, dev mmcblk1, sector 0
mmcblk1: error -84 transferring data, sector 1, nr 7, cmd response 0x900, card 0
end_request: I/O error, dev mmcblk1, sector 1
mmcblk1: error -84 transferring data, sector 2, nr 6, cmd response 0x900, card 0
end_request: I/O error, dev mmcblk1, sector 2
mmcblk1: error -84 transferring data, sector 3, nr 5, cmd response 0x900, card 0
end_request: I/O error, dev mmcblk1, sector 3
mmcblk1: error -84 transferring data, sector 4, nr 4, cmd response 0x900, card 0
....
Is there any extra patch I need to apply? I am running linux-next 20140506.
Thanks,
Fabio Estevam
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