arm: dts: artik530: optimize shift of eMMC

This patch modifies drive_shift and sample_shift of eMMC.
The drive_shift can have from 0 to 3 values. The meanings of the
values are degree of the phase shifted clock.

0: 0 degree phase shifted clock
1: 90 degree phase shifted clock
2: 180 degree phase shifted clock
3: 270 degree phase shifted clock

In the same as drive_shift, the sample_shift can have values as 0
to 3. The meanings of values are also the same.

There are sometimes fastboot fail with some targets, and this patch
solves it.

Change-Id: Id375b393e045a1dde41c9321900571b37dc76953
Signed-off-by: Sowon Na <sowon.na@samsung.com>

diff --git a/arch/arm/dts/s5p4418-artik530.dtsi b/arch/arm/dts/s5p4418-artik530.dtsi
index ef5ca091553786d55d148248b341738851f13337..62bb83af126b05cdedc4000e76d055c4627ccd07 100644 (file)
--- a/arch/arm/dts/s5p4418-artik530.dtsi
+++ b/arch/arm/dts/s5p4418-artik530.dtsi
@@ -10,9 +10,9 @@
 / {
        mmc2:mmc@c0069000 {
                nexell,drive_dly = <0x0>;
-               nexell,drive_shift = <0x01>;
+               nexell,drive_shift = <0x00>;
                nexell,sample_dly = <0x00>;
-               nexell,sample_shift = <0x00>;
+               nexell,sample_shift = <0x01>;
                frequency = <100000000>;
                status = "okay";
        };