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arm64: dts: freescale: Add LVDS overlay for TQMa8MPxL

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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>
This commit is contained in:
Alexander Stein
2022-12-08 10:08:42 +01:00
committed by Shawn Guo
parent 94e6197dad
commit 304feb6b90
2 changed files with 65 additions and 0 deletions
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4
arch/arm64/boot/dts/freescale/Makefile
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@@ -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

61
arch/arm64/boot/dts/freescale/imx8mp-tqma8mpql-mba8mpxl-lvds.dtso Normal file
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@@ -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";
};