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Commit 0eb14a8d authored by Maxime Ripard's avatar Maxime Ripard
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ARM: dts: sun7i: Add A20 SRAM and SRAM controller 



The A20 has a few SRAM that can be mapped either to a device or to the CPU,
with the mapping being controlled by a SRAM controller.

Add the SRAM controller, the SRAM that it drives and the section that can
be used by the various devices.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
Tested-by: default avatarHans de Goede <hdegoede@redhat.com>
parent 00f69ba9

arch/arm/boot/dts/sun7i-a20.dtsi

+37 −0
Original line number Diff line number Diff line
@@ -534,6 +534,42 @@ 
		#size-cells = <1>;

		ranges;



		sram-controller@01c00000 {

			compatible = "allwinner,sun4i-a10-sram-controller";

			reg = <0x01c00000 0x30>;

			#address-cells = <1>;

			#size-cells = <1>;

			ranges;



			sram_a: sram@00000000 {

				compatible = "mmio-sram";

				reg = <0x00000000 0xc000>;

				#address-cells = <1>;

				#size-cells = <1>;

				ranges = <0 0x00000000 0xc000>;



				emac_sram: sram-section@8000 {

					compatible = "allwinner,sun4i-a10-sram-a3-a4";

					reg = <0x8000 0x4000>;

					status = "disabled";

				};

			};



			sram_d: sram@00010000 {

				compatible = "mmio-sram";

				reg = <0x00010000 0x1000>;

				#address-cells = <1>;

				#size-cells = <1>;

				ranges = <0 0x00010000 0x1000>;



				otg_sram: sram-section@0000 {

					compatible = "allwinner,sun4i-a10-sram-d";

					reg = <0x0000 0x1000>;

					status = "disabled";

				};

			};

		};



		nmi_intc: interrupt-controller@01c00030 {

			compatible = "allwinner,sun7i-a20-sc-nmi";

			interrupt-controller;
@@ -583,6 +619,7 @@ 
			reg = <0x01c0b000 0x1000>;

			interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;

			clocks = <&ahb_gates 17>;

			allwinner,sram = <&emac_sram 1>;

			status = "disabled";

		};