Thread (57 messages) 57 messages, 8 authors, 2020-12-14

Re: [PATCH 7/8] arm64: dts: allwinner: Add Allwinner H616 .dtsi file

From: Samuel Holland <samuel@sholland.org>
Date: 2020-12-03 03:17:54
Also in: linux-devicetree, lkml

Andre,

On 12/2/20 7:54 AM, Andre Przywara wrote:
...
+	soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x0 0x0 0x0 0x40000000>;
+
+		syscon: syscon@3000000 {
+			compatible = "allwinner,sun50i-h616-system-control",
+				     "allwinner,sun50i-a64-system-control";
+			reg = <0x03000000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges;
+
+			sram_c: sram@28000 {
+				compatible = "mmio-sram";
+				reg = <0x00028000 0x30000>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x00028000 0x30000>;
+			};
+
+			sram_c1: sram@1a00000 {
+				compatible = "mmio-sram";
+				reg = <0x01a00000 0x200000>;
+				#address-cells = <1>;
+				#size-cells = <1>;
+				ranges = <0 0x01a00000 0x200000>;
+
+				ve_sram: sram-section@0 {
+					compatible = "allwinner,sun50i-h616-sram-c1",
+						     "allwinner,sun4i-a10-sram-c1";
+					reg = <0x000000 0x200000>;
+				};
+			};
+		};
You mentioned that you could not find a SRAM A2. How were these SRAM ranges
verified? If you can load eGON.BT0 larger than 32 KiB, then presumably NBROM
uses SRAM C, and it is in the manual, but I see no mention of SRAM C1.

Cheers,
Samuel

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