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 e0f6a79..70dadf6 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";
+};