Hello Paul, Maxime. I suggest the patch to fix it. diff --no-dereference -u -r -N linux-5.0-rc6_origin/Documentation/devicetree/bindings/display/panel/ronbo,rb070d30.txt linux-5.0-rc6/Documentation/devicetree/bindings/display/panel/ronbo,rb070d30.txt --- linux-5.0-rc6_origin/Documentation/devicetree/bindings/display/panel/ronbo,rb070d30.txt 1970-01-01 07:00:00.000000000 +0700 +++ linux-5.0-rc6/Documentation/devicetree/bindings/display/panel/ronbo,rb070d30.txt 2019-02-14 18:00:06.613795857 +0700 @@ -0,0 +1,23 @@ +Ronbo RB070D30N01A MIPI-DSI panel + +Required properties: + - compatible: must be "ronbo,rb070d30" + - reg: DSI virtual channel used by that screen + - vcc-lcd-supply: phandle to the power regulator + - backlight: phandle to the backlight used + - reset-gpios: a GPIO phandle for the reset pin + - power-gpios: a GPIO phandle for the power pin + - updn-gpios: a GPIO phandle for the updn pin (vertical flip) + - shlr-gpios: a GPIO phandle for the shlr pin (horizontal flip) + +Example: +panel@0 { + compatible = "ronbo,rb070d30"; + reg = <0>; + vcc-lcd-supply = <®_display>; + backlight = <&backlight>; + reset-gpios = <&r_pio 0 1 GPIO_ACTIVE_HIGH>; /* PL01 */ + power-gpios = <&r_pio 0 2 GPIO_ACTIVE_HIGH>; /* PL02 */ + updn-gpios = <&r_pio 0 3 GPIO_ACTIVE_HIGH>; /* PL03 */ + shlr-gpios = <&r_pio 0 4 GPIO_ACTIVE_LOW>; /* PL04 */ +}; diff --no-dereference -u -r -N linux-5.0-rc6_origin/Documentation/devicetree/bindings/vendor-prefixes.txt linux-5.0-rc6/Documentation/devicetree/bindings/vendor-prefixes.txt --- linux-5.0-rc6_origin/Documentation/devicetree/bindings/vendor-prefixes.txt 2019-02-11 05:42:20.000000000 +0700 +++ linux-5.0-rc6/Documentation/devicetree/bindings/vendor-prefixes.txt 2019-02-14 17:39:46.667994322 +0700 @@ -334,6 +334,7 @@ riscv RISC-V Foundation rockchip Fuzhou Rockchip Electronics Co., Ltd rohm ROHM Semiconductor Co., Ltd +ronbo Ronbo Electronics Ltd. roofull Shenzhen Roofull Technology Co, Ltd samsung Samsung Semiconductor samtec Samtec/Softing company _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel