Add the necessary nodes to enable the DSI panel on the
Lenovo Smart Tab M10 tablet.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
---
 arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts b/arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts
index 175befc02b22f5df895e95d828edac35fbaed963..e80a89c59818573c7068c3adeaf51fd51defc7f0 100644
--- a/arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts
+++ b/arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts
@@ -46,6 +46,18 @@ other_ext_region@0 {
 		};
 	};
 
+	backlight: gpio-backlight {
+		compatible = "gpio-backlight";
+
+		gpios = <&tlmm 16 GPIO_ACTIVE_HIGH>;
+
+		default-on;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&backlight_enable_active>;
+		pinctrl-1 = <&backlight_enable_sleep>;
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		key-volume-up {
@@ -63,6 +75,49 @@ vph_pwr: vph-pwr-regulator {
 	};
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&pm8953_s3>;
+	vddio-supply = <&pm8953_l6>;
+
+	status = "okay";
+
+	panel@0 {
+		compatible = "boe,tv101wum-ll2";
+		reg = <0>;
+
+		vsp-supply = <&lab>;
+		vsn-supply = <&ibb>;
+		reset-gpios = <&tlmm 61 GPIO_ACTIVE_LOW>;
+
+		backlight = <&backlight>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&panel_reset_active>;
+		pinctrl-1 = <&panel_reset_sleep>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&panel_in>;
+	data-lanes = <0 1 2 3>;
+};
+
+&mdss_dsi0_phy {
+	vcca-supply = <&pm8953_l3>;
+
+	status = "okay";
+};
+
 &hsusb_phy {
 	vdd-supply = <&pm8953_l3>;
 	vdda-pll-supply = <&pm8953_l7>;
@@ -90,6 +145,18 @@ touchscreen@38 {
 	};
 };
 
+&ibb {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	qcom,discharge-resistor-kohms = <32>;
+};
+
+&lab {
+	regulator-min-microvolt = <4600000>;
+	regulator-max-microvolt = <6000000>;
+	qcom,soft-start-us = <800>;
+};
+
 &pm8953_resin {
 	linux,code = <KEY_VOLUMEDOWN>;
 	status = "okay";
@@ -237,6 +304,36 @@ &sdhc_2 {
 &tlmm {
 	gpio-reserved-ranges = <0 4>, <135 4>;
 
+	backlight_enable_active: backlight-enable-active-state {
+		pins = "gpio16";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+		output-high;
+	};
+
+	backlight_enable_sleep: backlight-enable-sleep-state {
+		pins = "gpio16";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
+	panel_reset_active: panel-reset-active-state {
+		pins = "gpio61";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+		output-high;
+	};
+
+	panel_reset_sleep: panel-reset-sleep-state {
+		pins = "gpio61";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-pull-down;
+	};
+
 	ts_int_active: ts-int-active-state {
 		pins = "gpio65";
 		function = "gpio";

-- 
2.34.1

On Fri, Nov 15, 2024 at 11:20:54AM +0100, Neil Armstrong wrote:
> Add the necessary nodes to enable the DSI panel on the
> Lenovo Smart Tab M10 tablet.
> 
> Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm450-lenovo-tbx605f.dts | 97 ++++++++++++++++++++++
>  1 file changed, 97 insertions(+)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry