[PATCH v3 6/6] arm64: dts: exynos7870-j6lte: enable display panel support

Kaustabh Chakraborty
2025-09-28T17:57:49Z

Enable DECON and DSI nodes, and add the compatible display panel and
appropriate panel timings for this device. Also, remove the
simple-framebuffer node in favor of the panel.

This device has a 720x1480 AMOLED Samsung AMS561RA01 panel with
S6E8AA5X01 controller.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
---
arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts | 38 ++++++++++++++++---------
1 file changed, 24 insertions(+), 14 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
index b8ce433b93b1b488da31bbe4846f8092243611ad..f92e1f8fabf3e01b69583f82cf842178a21002a2 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7870-j6lte.dts
@@ -27,20 +27,7 @@ aliases {
};

chosen {
- #address-cells = <2>;
- #size-cells = <1>;
- ranges;
-
stdout-path = &serial2;
-
- framebuffer@67000000 {
- compatible = "simple-framebuffer";
- reg = <0x0 0x67000000 (720 * 1480 * 4)>;
- width = <720>;
- height = <1480>;
- stride = <(720 * 4)>;
- format = "a8r8g8b8";
- };
};

gpio-hall-effect-sensor {
@@ -119,8 +106,9 @@ ramoops@46e00000 {
pmsg-size = <0x4000>;
};

- framebuffer@67000000 {
+ cont_splash_mem: framebuffer@67000000 {
reg = <0x0 0x67000000 (720 * 1480 * 4)>;
+ iommu-addresses = <&decon 0x67000000 (720 * 1480 * 4)>;
no-map;
};
};
@@ -133,6 +121,28 @@ vibrator {
};
};

+&decon {
+ memory-region = <&cont_splash_mem>;
+
+ status = "okay";
+};
+
+&dsi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ samsung,burst-clock-frequency = <500000000>;
+ samsung,esc-clock-frequency = <16000000>;
+ samsung,pll-clock-frequency = <26000000>;
+
+ status = "okay";
+
+ panel@0 {
+ compatible = "samsung,s6e8aa5x01-ams561ra01";
+ reg = <0>;
+ };
+};
+
&gpu {
status = "okay";
};

--
2.51.0