This adds an overlay for the supported LVDS display tianma tm070jvhg33.
The display timings have to be specified explicitly. Using the typical pixel
clock, the LDB clock can not be configured as the 7-fold of that.
By setting pixel clock to 74.25 MHz, LDB can be configured to exactly
519.75 MHz.
Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
To be hold I'm unsure where to list the overlays. I checked other overlays
and opted to added them at the end of imx8mp section.
arch/arm64/boot/dts/freescale/Makefile | 4 ++
.../imx8mp-tqma8mpql-mba8mpxl-lvds.dtso | 61 +++++++++++++++++++
2 files changed, 65 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl-lvds.dtso
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index ef6f364eaa183..9eedee68413b2 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -97,6 +97,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dahlia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-nonwifi-dev.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dahlia.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-verdin-wifi-dev.dtb
+
+imx8mp-tqma8mpql-mba8mpxl-lvds-dtbs += imx8mp-tqma8mpql-mba8mpxl.dtb imx8mp-tqma8mpql-mba8mpxl-lvds.dtbo
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-tqma8mpql-mba8mpxl-lvds.dtb
+
dtb-$(CONFIG_ARCH_MXC) += imx8mq-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mq-hummingboard-pulse.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mq-kontron-pitx-imx8m.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl-lvds.dtso b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl-lvds.dtso
new file mode 100644
index 0000000000000..ea44d605342ba
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl-lvds.dtso
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
+/*
+ * Copyright (c) 2022 TQ-Systems GmbH <linux@xxxxxxxxxxxxxxx>,
+ * D-82229 Seefeld, Germany.
+ * Author: Alexander Stein
+ */
+
+/dts-v1/;
+/plugin/;
+
+&{/} {
+ compatible = "tq,imx8mp-tqma8mpql-mba8mpxl", "tq,imx8mp-tqma8mpql", "fsl,imx8mp";
+};
+
+&backlight_lvds {
+ status = "okay";
+};
+
+&display {
+ compatible = "tianma,tm070jvhg33";
+ status = "okay";
+
+ panel-timing {
+ clock-frequency = <74250000>;
+ hactive = <1280>;
+ vactive = <800>;
+ hfront-porch = <64>;
+ hback-porch = <5>;
+ hsync-len = <1>;
+ vfront-porch = <40>;
+ vback-porch = <2>;
+ vsync-len = <1>;
+ de-active = <1>;
+ };
+
+ port {
+ panel_in_lvds0: endpoint {
+ remote-endpoint = <&ldb_lvds_ch0>;
+ };
+ };
+};
+
+&lcdif2 {
+ status = "okay";
+};
+
+&lvds_bridge {
+ status = "okay";
+
+ ports {
+ port@1 {
+ ldb_lvds_ch0: endpoint {
+ remote-endpoint = <&panel_in_lvds0>;
+ };
+ };
+ };
+};
+
+&pwm2 {
+ status = "okay";
+};
--
2.34.1
