linux-kernel - [PATCH 1/2] Mips: ls2k1000: dts: add the display controller device node

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Message-Id: <20230222165514.684729-1-suijingfeng@loongson.cn>
Date:   Thu, 23 Feb 2023 00:55:13 +0800
From:   suijingfeng <suijingfeng@...ngson.cn>
To:     Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        suijingfeng <suijingfeng@...ngson.cn>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: [PATCH 1/2] Mips: ls2k1000: dts: add the display controller device node

The display controller is a pci device, it's pci vendor id is
0x0014, it's pci device id is 0x7a06.

Signed-off-by: suijingfeng <suijingfeng@...ngson.cn>
---
 .../boot/dts/loongson/loongson64-2k1000.dtsi  | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
index 8143a61111e3..a528af3977d9 100644
--- a/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
+++ b/arch/mips/boot/dts/loongson/loongson64-2k1000.dtsi
@@ -31,6 +31,18 @@ memory@...000 {
 			<0x00000001 0x10000000 0x00000001 0xb0000000>; /* 6912 MB at 4352MB */
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		display_reserved: framebuffer@...00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0x30000000 0x0 0x04000000>; /* 64M */
+			linux,cma-default;
+		};
+	};
+
 	cpu_clk: cpu_clk {
 		#clock-cells = <0>;
 		compatible = "fixed-clock";
@@ -198,6 +210,15 @@ sata@8,0 {
 				interrupt-parent = <&liointc0>;
 			};
 
+			display-controller@6,0 {
+				compatible = "loongson,ls2k1000-dc";
+
+				reg = <0x3000 0x0 0x0 0x0 0x0>;
+				interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
+				interrupt-parent = <&liointc0>;
+				memory-region = <&display_reserved>;
+			};
+
 			pci_bridge@9,0 {
 				compatible = "pci0014,7a19.0",
 						   "pci0014,7a19",
-- 
2.34.1