Tested on a Mele A1000G Quad.

Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 arch/arm/boot/dts/sun6i-a31-m9.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/sun6i-a31-m9.dts 
b/arch/arm/boot/dts/sun6i-a31-m9.dts
index c95ee77..a188721 100644
--- a/arch/arm/boot/dts/sun6i-a31-m9.dts
+++ b/arch/arm/boot/dts/sun6i-a31-m9.dts
@@ -21,6 +21,22 @@
        };
 
        soc@01c00000 {
+               mmc0: mmc@01c0f000 {
+                       pinctrl-names = "default";
+                       pinctrl-0 = <&mmc0_pins_a>, <&mmc0_cd_pin_m9>;
+                       cd-gpios = <&pio 7 22 0>; /* PH22 */
+                       status = "okay";
+               };
+
+               pio: pinctrl@01c20800 {
+                       mmc0_cd_pin_m9: mmc0_cd_pin@0 {
+                               allwinner,pins = "PH22";
+                               allwinner,function = "gpio_in";
+                               allwinner,drive = <0>;
+                               allwinner,pull = <1>;
+                       };
+               };
+
                uart0: serial@01c28000 {
                        pinctrl-names = "default";
                        pinctrl-0 = <&uart0_pins_a>;
-- 
1.9.0

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