ARM: STi: STiH416: Add ethernet support.

This patch adds support to STiH416 SOC, which has two ethernet
snps,dwmac controllers version 3.710. With this patch B2000 and B2020
boards can boot with ethernet in MII and RGMII modes.

Tested on both B2020 and B2000.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>

3 files changed, 167 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/stih416-clock.dtsi b/arch/arm/boot/dts/stih416-clock.dtsi
index 7026bf1158d8..a6942c75cbbb 100644
--- a/arch/arm/boot/dts/stih416-clock.dtsi
+++ b/arch/arm/boot/dts/stih416-clock.dtsi
@@ -37,5 +37,19 @@
 			clock-frequency = <100000000>;
 			clock-output-names = "CLK_S_ICN_REG_0";
 		};
+
+		CLK_S_GMAC0_PHY: clockgenA1@7 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+			clock-output-names = "CLK_S_GMAC0_PHY";
+		};
+
+		CLK_S_ETH1_PHY: clockgenA0@7 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+			clock-output-names = "CLK_S_ETH1_PHY";
+		};
 	};
 };
diff --git a/arch/arm/boot/dts/stih416-pinctrl.dtsi b/arch/arm/boot/dts/stih416-pinctrl.dtsi
index 8863c38d35b8..77b7725c1075 100644
--- a/arch/arm/boot/dts/stih416-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stih416-pinctrl.dtsi
@@ -132,6 +132,58 @@
 					};
 				};
 			};
+
+			gmac1 {
+				pinctrl_mii1: mii1 {
+					st,pins {
+						txd0 = <&PIO0 0 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txd1 = <&PIO0 1 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txd2 = <&PIO0 2 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txd3 = <&PIO0 3 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txer = <&PIO0 4 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txen = <&PIO0 5 ALT1 OUT SE_NICLK_IO 0 CLK_A>;
+						txclk = <&PIO0 6 ALT1 IN NICLK 0 CLK_A>;
+						col =   <&PIO0 7 ALT1 IN BYPASS 1000>;
+
+						mdio =  <&PIO1 0 ALT1 OUT BYPASS 1500>;
+						mdc =   <&PIO1 1 ALT1 OUT NICLK 0 CLK_A>;
+						crs =   <&PIO1 2 ALT1 IN BYPASS 1000>;
+						mdint = <&PIO1 3 ALT1 IN BYPASS 0>;
+						rxd0 =  <&PIO1 4 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+						rxd1 =  <&PIO1 5 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+						rxd2 =  <&PIO1 6 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+						rxd3 =  <&PIO1 7 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+
+						rxdv =  <&PIO2 0 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+						rx_er = <&PIO2 1 ALT1 IN SE_NICLK_IO 0 CLK_A>;
+						rxclk = <&PIO2 2 ALT1 IN NICLK 0 CLK_A>;
+						phyclk = <&PIO2 3 ALT1 OUT NICLK 0 CLK_A>;
+					};
+				};
+				pinctrl_rgmii1: rgmii1-0 {
+					st,pins {
+						txd0 =  <&PIO0 0 ALT1 OUT DE_IO 500 CLK_A>;
+						txd1 =  <&PIO0 1 ALT1 OUT DE_IO 500 CLK_A>;
+						txd2 =  <&PIO0 2 ALT1 OUT DE_IO 500 CLK_A>;
+						txd3 =  <&PIO0 3 ALT1 OUT DE_IO 500 CLK_A>;
+						txen =  <&PIO0 5 ALT1 OUT DE_IO 0   CLK_A>;
+						txclk = <&PIO0 6 ALT1 IN  NICLK 0   CLK_A>;
+
+						mdio = <&PIO1 0 ALT1 OUT BYPASS 0>;
+						mdc  = <&PIO1 1 ALT1 OUT NICLK  0 CLK_A>;
+						rxd0 = <&PIO1 4 ALT1 IN DE_IO 500 CLK_A>;
+						rxd1 = <&PIO1 5 ALT1 IN DE_IO 500 CLK_A>;
+						rxd2 = <&PIO1 6 ALT1 IN DE_IO 500 CLK_A>;
+						rxd3 = <&PIO1 7 ALT1 IN DE_IO 500 CLK_A>;
+
+						rxdv   = <&PIO2 0 ALT1 IN  DE_IO 500 CLK_A>;
+						rxclk  = <&PIO2 2 ALT1 IN  NICLK 0   CLK_A>;
+						phyclk = <&PIO2 3 ALT4 OUT NICLK 0   CLK_B>;
+
+						clk125= <&PIO3 7 ALT4 IN NICLK 0 CLK_A>;
+					};
+				};
+			};
 		};
 
 		pin-controller-front {
@@ -322,6 +374,63 @@
 					};
 				};
 			};
+
+			gmac0 {
+				pinctrl_mii0: mii0 {
+					st,pins {
+						mdint = <&PIO13 6 ALT2 IN  BYPASS      0>;
+						txen =  <&PIO13 7 ALT2 OUT SE_NICLK_IO 0 CLK_A>;
+						txd0 =  <&PIO14 0 ALT2 OUT SE_NICLK_IO 0 CLK_A>;
+						txd1 =  <&PIO14 1 ALT2 OUT SE_NICLK_IO 0 CLK_A>;
+						txd2 =  <&PIO14 2 ALT2 OUT SE_NICLK_IO 0 CLK_B>;
+						txd3 =  <&PIO14 3 ALT2 OUT SE_NICLK_IO 0 CLK_B>;
+
+						txclk = <&PIO15 0 ALT2 IN  NICLK       0 CLK_A>;
+						txer =  <&PIO15 1 ALT2 OUT SE_NICLK_IO 0 CLK_A>;
+						crs = <&PIO15 2 ALT2 IN  BYPASS 1000>;
+						col = <&PIO15 3 ALT2 IN  BYPASS 1000>;
+						mdio= <&PIO15 4 ALT2 OUT BYPASS 1500>;
+						mdc = <&PIO15 5 ALT2 OUT NICLK  0    CLK_B>;
+
+						rxd0 =  <&PIO16 0 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rxd1 =  <&PIO16 1 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rxd2 =  <&PIO16 2 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rxd3 =  <&PIO16 3 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rxdv =  <&PIO15 6 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rx_er = <&PIO15 7 ALT2 IN SE_NICLK_IO 0 CLK_A>;
+						rxclk = <&PIO17 0 ALT2 IN NICLK 0 CLK_A>;
+						phyclk = <&PIO13 5 ALT2 OUT NICLK 0 CLK_B>;
+					};
+				};
+
+				pinctrl_gmii0: gmii0 {
+					st,pins {
+						};
+				};
+				pinctrl_rgmii0: rgmii0 {
+					st,pins {
+						 phyclk = <&PIO13  5 ALT4 OUT NICLK 0 CLK_B>;
+						 txen = <&PIO13 7 ALT2 OUT DE_IO 0 CLK_A>;
+						 txd0  = <&PIO14 0 ALT2 OUT DE_IO 500 CLK_A>;
+						 txd1  = <&PIO14 1 ALT2 OUT DE_IO 500 CLK_A>;
+						 txd2  = <&PIO14 2 ALT2 OUT DE_IO 500 CLK_B>;
+						 txd3  = <&PIO14 3 ALT2 OUT DE_IO 500 CLK_B>;
+						 txclk = <&PIO15 0 ALT2 IN NICLK 0 CLK_A>;
+
+						 mdio = <&PIO15 4 ALT2 OUT BYPASS 0>;
+						 mdc = <&PIO15 5 ALT2 OUT NICLK 0 CLK_B>;
+
+						 rxdv = <&PIO15 6 ALT2 IN DE_IO 500 CLK_A>;
+						 rxd0 =<&PIO16 0 ALT2 IN DE_IO	500 CLK_A>;
+						 rxd1 =<&PIO16 1 ALT2 IN DE_IO	500 CLK_A>;
+						 rxd2 =<&PIO16 2 ALT2 IN DE_IO	500 CLK_A>;
+						 rxd3  =<&PIO16 3 ALT2 IN DE_IO 500 CLK_A>;
+						 rxclk =<&PIO17 0 ALT2 IN NICLK 0 CLK_A>;
+
+						 clk125=<&PIO17 6 ALT1 IN NICLK 0 CLK_A>;
+					};
+				};
+			};
 		};
 
 		pin-controller-fvdp-fe {
diff --git a/arch/arm/boot/dts/stih416.dtsi b/arch/arm/boot/dts/stih416.dtsi
index 788ba5be9a1b..a96055b12a99 100644
--- a/arch/arm/boot/dts/stih416.dtsi
+++ b/arch/arm/boot/dts/stih416.dtsi
@@ -156,5 +156,49 @@
 
 			status		= "disabled";
 		};
+
+		ethernet0: dwmac@fe810000 {
+			device_type 	= "network";
+			compatible	= "st,stih416-dwmac", "snps,dwmac", "snps,dwmac-3.710";
+			status 		= "disabled";
+			reg 		= <0xfe810000 0x8000>, <0x8bc 0x4>;
+			reg-names	= "stmmaceth", "sti-ethconf";
+
+			interrupts = <0 133 0>, <0 134 0>, <0 135 0>;
+			interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+
+			snps,pbl 	= <32>;
+			snps,mixed-burst;
+
+			st,syscon		= <&syscfg_rear>;
+			resets			= <&softreset STIH416_ETH0_SOFTRESET>;
+			reset-names		= "stmmaceth";
+			pinctrl-names 	= "default";
+			pinctrl-0	= <&pinctrl_mii0>;
+			clock-names	= "stmmaceth";
+			clocks		= <&CLK_S_GMAC0_PHY>;
+		};
+
+		ethernet1: dwmac@fef08000 {
+			device_type = "network";
+			compatible		= "st,stih416-dwmac", "snps,dwmac", "snps,dwmac-3.710";
+			status 		= "disabled";
+			reg		= <0xfef08000 0x8000>, <0x7f0 0x4>;
+			reg-names	= "stmmaceth", "sti-ethconf";
+			interrupts = <0 136 0>, <0 137 0>, <0 138 0>;
+			interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+
+			snps,pbl	= <32>;
+			snps,mixed-burst;
+
+			st,syscon	= <&syscfg_sbc>;
+
+			resets		= <&softreset STIH416_ETH1_SOFTRESET>;
+			reset-names	= "stmmaceth";
+			pinctrl-names 	= "default";
+			pinctrl-0	= <&pinctrl_mii1>;
+			clock-names	= "stmmaceth";
+			clocks		= <&CLK_S_ETH1_PHY>;
+		};
 	};
 };