From: Kaustabh Chakraborty <kauschluss@disroot.org>
Date: Thu, 30 Oct 2025 19:20:17 +0000 (+0530)
Subject: arm64: dts: exynos7870-on7xelte: enable display panel support
X-Git-Tag: v6.19-rc1~100^2~30^2~2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35e69cc6bdef74a3c4794bd278a94dfb512abd7a;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: exynos7870-on7xelte: enable display panel support

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 1080x1920 Synaptics TD4300 display panel.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20251031-exynos7870-drm-dts-v4-3-c1f77fb16b87@disroot.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---

diff --git a/arch/arm64/boot/dts/exynos/exynos7870-on7xelte.dts b/arch/arm64/boot/dts/exynos/exynos7870-on7xelte.dts
index 2a3d91d390ec7..29e124c72e9d2 100644
--- a/arch/arm64/boot/dts/exynos/exynos7870-on7xelte.dts
+++ b/arch/arm64/boot/dts/exynos/exynos7870-on7xelte.dts
@@ -27,20 +27,7 @@
 	};
 
 	chosen {
-		#address-cells = <2>;
-		#size-cells = <1>;
-		ranges;
-
 		stdout-path = &serial2;
-
-		framebuffer@67000000 {
-			compatible = "simple-framebuffer";
-			reg = <0x0 0x67000000 (1080 * 1920 * 4)>;
-			width = <1080>;
-			height = <1920>;
-			stride = <(1080 * 4)>;
-			format = "a8r8g8b8";
-		};
 	};
 
 	gpio-keys {
@@ -108,8 +95,9 @@
 			pmsg-size = <0x4000>;
 		};
 
-		framebuffer@67000000 {
+		cont_splash_mem: framebuffer@67000000 {
 			reg = <0x0 0x67000000 (1080 * 1920 * 4)>;
+			iommu-addresses = <&decon 0x67000000 (1080 * 1920 * 4)>;
 			no-map;
 		};
 	};
@@ -122,6 +110,47 @@
 	};
 };
 
+&decon {
+	memory-region = <&cont_splash_mem>;
+
+	status = "okay";
+};
+
+&dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	samsung,burst-clock-frequency = <1001000000>;
+	samsung,esc-clock-frequency = <16000000>;
+	samsung,pll-clock-frequency = <26000000>;
+
+	status = "okay";
+
+	panel@0 {
+		compatible = "syna,td4300-panel";
+		reg = <0>;
+
+		backlight-gpios = <&gpd3 5 GPIO_ACTIVE_LOW>;
+
+		width-mm = <68>;
+		height-mm = <121>;
+
+		panel-timing {
+			clock-frequency = <144389520>;
+
+			hactive = <1080>;
+			hsync-len = <4>;
+			hfront-porch = <120>;
+			hback-porch = <32>;
+
+			vactive = <1920>;
+			vsync-len = <2>;
+			vfront-porch = <21>;
+			vback-porch = <4>;
+		};
+	};
+};
+
 &gpu {
 	status = "okay";
 };