ARM: dts: sunxi: libretech-all-h3-cc: Enable eMMC module

The Libretech ALL-H3-CC has a high density connector for attaching
an eMMC module. The module form factor and connection is specific
to Libretech, and has provisions for split vmmc/vqmmc (core and I/O)
voltage supplies, but this board does not wire the vqmmc side. The
H2+/H3/H5 SoCs do not support alternate I/O voltages for eMMC either.
Only 3.3V is supported. A specific module that ties vqmmc to vmmc,
with both at 3.3V, must be used.

Given that a) eMMC is not designed to be hotplugged, b) power is
always provided on the pins, and c) MMC controllers can deal with
missing cards, we can enable this by default. If a module is attached
it will be picked up by the system.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm/boot/dts/sunxi-libretech-all-h3-cc.dtsi b/arch/arm/boot/dts/sunxi-libretech-all-h3-cc.dtsi
index f7ffdd6658a2610c77ecad7565732eb64b9d2181..1eadc132390ca1c97634adcef038e8025540af3b 100644 (file)
--- a/arch/arm/boot/dts/sunxi-libretech-all-h3-cc.dtsi
+++ b/arch/arm/boot/dts/sunxi-libretech-all-h3-cc.dtsi
@@ -178,6 +178,15 @@
        status = "okay";
 };
 
+&mmc2 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&mmc2_8bit_pins>;
+       vmmc-supply = <&reg_vcc_io>;
+       bus-width = <8>;
+       non-removable;
+       status = "okay";
+};
+
 &ohci0 {
        status = "okay";
 };