[PATCH v5 07/24] ARM: tegra: Add common device-tree for LVDS display panels of Tegra30 ASUS tablets
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-12-08 17:38:26
Also in:
linux-devicetree, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Maxim Schwalm <redacted> 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 <redacted> Signed-off-by: Svyatoslav Ryhel <redacted> Signed-off-by: Maxim Schwalm <redacted> 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>; + }; + }; + }; + }; +};
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2.33.1