ARM: dts: sun8i: sina33: Enable hardware reset and HS-DDR for eMMC
authorChen-Yu Tsai <wens@csie.org>
Thu, 21 Jan 2016 05:26:38 +0000 (13:26 +0800)
committerMaxime Ripard <maxime.ripard@free-electrons.com>
Sun, 24 Jan 2016 23:01:21 +0000 (00:01 +0100)
mmc2 has a special pin for eMMC hardware reset, which is controllable
from the controller. Add the "mmc-cap-hw-reset" property to denote that
this controller supports this function, and the pins are actually used.

Also increase the signal drive strength for mmc2 pins, for HS-DDR mode
support.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
arch/arm/boot/dts/sun8i-a33-sinlinx-sina33.dts

index 13ce68f06dd6e0ab7c7b9a5ba6e05562e4df3868..bd2a3beb4629201443e0ce30072988b25353bcca 100644 (file)
        vmmc-supply = <&reg_vcc3v0>;
        bus-width = <8>;
        non-removable;
+       cap-mmc-hw-reset;
        status = "okay";
 };
 
 &mmc2_8bit_pins {
+       /* Increase drive strength for DDR modes */
+       allwinner,drive = <SUN4I_PINCTRL_40_MA>;
        /* eMMC is missing pull-ups */
        allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
 };