ARM: at91/dt: add SRAM nodes

Add nodes for the SRAM available on atmel SoCs
For the at91sam9260 and the at91sam9g20, address mirroring is used to create a
single contiguous SRAM range instead of declaring two separate banks.

Also remove leftover TODOs in the sam9g45 file

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[nicolas.ferre@atmel.com: correct at91sam9rl sram size => 0x10000]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91rm9200.dtsi

@@ -66,6 +66,11 @@
 		};
 	};
 
+	sram: sram@00200000 {
+		compatible = "mmio-sram";
+		reg = <0x00200000 0x4000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9260.dtsi

@@ -69,6 +69,11 @@
 		};
 	};
 
+	sram0: sram@002ff000 {
+		compatible = "mmio-sram";
+		reg = <0x002ff000 0x2000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9261.dtsi

@@ -60,6 +60,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x28000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9263.dtsi

@@ -62,6 +62,16 @@
 		};
 	};
 
+	sram0: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x14000>;
+	};
+
+	sram1: sram@00500000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x4000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9g20.dtsi

@@ -16,6 +16,15 @@
 		reg = <0x20000000 0x08000000>;
 	};
 
+	sram0: sram@002ff000 {
+		status = "disabled";
+	};
+
+	sram1: sram@002fc000 {
+		compatible = "mmio-sram";
+		reg = <0x002fc000 0x8000>;
+	};
+
 	ahb {
 		apb {
 			i2c0: i2c@fffac000 {

arch/arm/boot/dts/at91sam9g45.dtsi

@@ -74,6 +74,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x10000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -1287,7 +1292,6 @@
 			compatible = "atmel,at91rm9200-ohci", "usb-ohci";
 			reg = <0x00700000 0x100000>;
 			interrupts = <22 IRQ_TYPE_LEVEL_HIGH 2>;
-			//TODO
 			clocks = <&usb>, <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
 			clock-names = "usb_clk", "ohci_clk", "hclk", "uhpck";
 			status = "disabled";
@@ -1297,7 +1301,6 @@
 			compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
 			reg = <0x00800000 0x100000>;
 			interrupts = <22 IRQ_TYPE_LEVEL_HIGH 2>;
-			//TODO
 			clocks = <&usb>, <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
 			clock-names = "usb_clk", "ehci_clk", "hclk", "uhpck";
 			status = "disabled";

arch/arm/boot/dts/at91sam9n12.dtsi

@@ -64,6 +64,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x8000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9rl.dtsi

@@ -70,6 +70,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x10000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/at91sam9x5.dtsi

@@ -72,6 +72,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x8000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/sama5d3.dtsi

@@ -78,6 +78,11 @@
 		};
 	};
 
+	sram: sram@00300000 {
+		compatible = "mmio-sram";
+		reg = <0x00300000 0x20000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;

arch/arm/boot/dts/sama5d4.dtsi

@@ -103,6 +103,11 @@
 		};
 	};
 
+	ns_sram: sram@00210000 {
+		compatible = "mmio-sram";
+		reg = <0x00210000 0x10000>;
+	};
+
 	ahb {
 		compatible = "simple-bus";
 		#address-cells = <1>;