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

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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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