ARM: mach-shmobile: r8a7779: Minimal setup using DT

Allow a minimal setup of the r8a7779 SoC using a flattened device tree.
In particular, configure the i2c and ethernet controllers using a
flattened device tree.

SCI serial controller and TMU clock source, whose drivers do not yet
support configuration using a flattened device tree, are still configured
using C code in order to allow booting of a board with this SoC.

The ethernet controller also requires a regulator which is a board property.
A sample snippet DT for the marzen board is as follows:

/dts-v1/;
/include/ "r8a7779.dtsi"

/ {
	fixedregulator3v3: fixedregulator@0 {
		compatible = "regulator-fixed";
		regulator-name = "fixed-3.3V";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
	};
};

&lan0 {
	vddvario-supply = <&fixedregulator3v3>;
	vdd33a-supply = <&fixedregulator3v3>;
};

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

1 files changed, 45 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/r8a7779.dtsi b/arch/arm/boot/dts/r8a7779.dtsi
index 8c6d52cee6c6..2913759e93e2 100644
--- a/arch/arm/boot/dts/r8a7779.dtsi
+++ b/arch/arm/boot/dts/r8a7779.dtsi
@@ -47,4 +47,49 @@
                 reg = <0xf0001000 0x1000>,
                       <0xf0000100 0x100>;
         };
+
+        i2c0: i2c@0xffc70000 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                compatible = "renesas,rmobile-iic";
+                reg = <0xffc70000 0x1000>;
+                interrupt-parent = <&gic>;
+                interrupts = <0 79 0x4>;
+        };
+
+        i2c1: i2c@0xffc71000 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                compatible = "renesas,rmobile-iic";
+                reg = <0xffc71000 0x1000>;
+                interrupt-parent = <&gic>;
+                interrupts = <0 82 0x4>;
+        };
+
+        i2c2: i2c@0xffc72000 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                compatible = "renesas,rmobile-iic";
+                reg = <0xffc72000 0x1000>;
+                interrupt-parent = <&gic>;
+                interrupts = <0 80 0x4>;
+        };
+
+        i2c3: i2c@0xffc73000 {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                compatible = "renesas,rmobile-iic";
+                reg = <0xffc73000 0x1000>;
+                interrupt-parent = <&gic>;
+                interrupts = <0 81 0x4>;
+        };
+
+        lan0: lan0@18000000 {
+                compatible = "smsc,lan9220", "smsc,lan9115";
+                reg = <0x18000000 0x100>;
+                phy-mode = "mii";
+                interrupt-parent = <&gic>;
+                interrupts = <0 28 0x4>;
+                reg-io-width = <4>;
+        };
 };