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 2a3d91d390ec7a6e0c49dde493a99e5b18ea2235..29e124c72e9d25f05705909a981477f46a86efcf 100644 (file)
--- 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";
 };