[3/3] arm64: dts: add imx8mp-libra-rdk-fpsc LVDS panel overlay

Commit Message

Yannic Moog March 28, 2025, 1:04 p.m. UTC

The Libra board has an LVDS connector. Add an overlay for an
etml1010g3dra LVDS panel supported for the phyCORE-i.MX 8M Plus that may
be connected to it.

Signed-off-by: Yannic Moog <[e-mail]>
---
 arch/arm64/boot/dts/freescale/Makefile             |  2 +
 .../imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtso  | 44 ++++++++++++++++++++++
 2 files changed, 46 insertions(+)

Patch

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index df792553be479afcb6fa50dcd25a7eb63b67bc44..aa349ee35d5b310512f05c92390d5c2a27df81bb 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -201,6 +201,8 @@  dtb-$(CONFIG_ARCH_MXC) += imx8mp-kontron-dl.dtb
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-kontron-smarc-eval-carrier.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-libra-rdk-fpsc.dtb
+imx8mp-libra-rdk-fpsc-lvds-dtbs += imx8mp-libra-rdk-fpsc.dtb imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-libra-rdk-fpsc-lvds.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-msc-sm2s-ep1.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-navqp.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-nitrogen-smarc-universal-board.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtso b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtso
new file mode 100644
index 0000000000000000000000000000000000000000..1dcf249ca90d2b4d9720a55de39e3f8564780dc3
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtso
@@ -0,0 +1,44 @@ 
+// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/imx8mp-clock.h>
+
+/dts-v1/;
+/plugin/;
+
+&backlight_lvds0 {
+	brightness-levels = <0 8 16 32 64 128 255>;
+	default-brightness-level = <8>;
+	enable-gpios = <&gpio5 23 GPIO_ACTIVE_LOW>;
+	num-interpolated-steps = <2>;
+	pwms = <&pwm1 0 66667 0>;
+	status = "okay";
+};
+
+&lcdif2 {
+	status = "okay";
+};
+
+&lvds_bridge {
+	assigned-clocks = <&clk IMX8MP_CLK_MEDIA_LDB>, <&clk IMX8MP_VIDEO_PLL1>;
+	assigned-clock-parents = <&clk IMX8MP_VIDEO_PLL1_OUT>;
+	/*
+	 * The LVDS panel uses 72.4 MHz pixel clock, set IMX8MP_VIDEO_PLL1 to
+	 * 72.4 * 7 = 506.8 MHz so the LDB serializer and LCDIFv3 scanout
+	 * engine can reach accurate pixel clock of exactly 72.4 MHz.
+	 */
+	assigned-clock-rates = <0>, <506800000>;
+	status = "okay";
+};
+
+&panel0_lvds {
+	compatible = "edt,etml1010g3dra";
+	status = "okay";
+};
+
+&pwm1 {
+	status = "okay";
+};