[PATCH v5 07/24] ARM: tegra: Add common device-tree for LVDS display panels of Tegra30 ASUS tablets

Dmitry Osipenko
2021-12-08T17:38:26Z

From: Maxim Schwalm <maxim.schwalm@gmail.com>

All Tegra30 ASUS tablets have a similar design pattern in terms of
hardware integration of LVDS display panels, like exactly the same GPIOs
are used for power and reset, etc. Add a common device-tree for LVDS
display panels of Tegra30 ASUS tablets to avoid replicating the
boilerplate panel description.

[digetx@gmail.com: factored out common part into separate patch and wrote commit message]
Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Maxim Schwalm <maxim.schwalm@gmail.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
.../boot/dts/tegra30-asus-lvds-display.dtsi | 61 +++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 arch/arm/boot/dts/tegra30-asus-lvds-display.dtsi

diff --git a/arch/arm/boot/dts/tegra30-asus-lvds-display.dtsi b/arch/arm/boot/dts/tegra30-asus-lvds-display.dtsi
new file mode 100644
index 000000000000..a047abfa6369
--- /dev/null
+++ b/arch/arm/boot/dts/tegra30-asus-lvds-display.dtsi
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/* This dtsi file describes parts common for Asus T30 devices with a LVDS panel. */
+
+/ {
+ host1x@50000000 {
+ lcd: dc@54200000 {
+ rgb {
+ status = "okay";
+
+ port@0 {
+ dpi_output: endpoint {
+ remote-endpoint = <&bridge_input>;
+ bus-width = <24>;
+ };
+ };
+ };
+ };
+ };
+
+ display-panel {
+ power-supply = <&vdd_pnl>;
+ ddc-i2c-bus = <&lcd_ddc>;
+ backlight = <&backlight>;
+
+ port {
+ panel_input: endpoint {
+ remote-endpoint = <&bridge_output>;
+ };
+ };
+ };
+
+ /* Texas Instruments SN75LVDS83B LVDS Transmitter */
+ lvds-encoder {
+ compatible = "ti,sn75lvds83", "lvds-encoder";
+
+ powerdown-gpios = <&gpio TEGRA_GPIO(N, 6) GPIO_ACTIVE_LOW>;
+ power-supply = <&vdd_3v3_sys>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ bridge_input: endpoint {
+ remote-endpoint = <&dpi_output>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ bridge_output: endpoint {
+ remote-endpoint = <&panel_input>;
+ };
+ };
+ };
+ };
+};
--
2.33.1