arm64: dts: freescale: Add LVDS overlay for TQMa8MPxL

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@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index e0f6a7970f5831e06247a958fe58be677645394e..70dadf6472c9bbad3f360041b6c6b5dfbcf51345 100644 (file)
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -98,6 +98,10 @@ 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 (file)
index 0000000..ea44d60
--- /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@ew.tq-group.com>,
+ * 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";
+};