[PATCH RFC 09/10] ARM: STi: Add STiH415 ethernet support.

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From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxx>

This patch adds support to STiH415 SOC, which has two ethernet
snps,dwmac controllers version 3.610. 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@xxxxxx>
---
 arch/arm/boot/dts/stih415-clock.dtsi   |   14 +++++
 arch/arm/boot/dts/stih415-pinctrl.dtsi |   82 ++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/stih415.dtsi         |   56 ++++++++++++++++++++++
 arch/arm/boot/dts/stih41x-b2000.dtsi   |   32 ++++++++++++
 arch/arm/boot/dts/stih41x-b2020.dtsi   |   33 +++++++++++++
 5 files changed, 217 insertions(+), 0 deletions(-)

diff --git a/arch/arm/boot/dts/stih415-clock.dtsi b/arch/arm/boot/dts/stih415-clock.dtsi
index 174c799..d047dbc 100644
--- a/arch/arm/boot/dts/stih415-clock.dtsi
+++ b/arch/arm/boot/dts/stih415-clock.dtsi
@@ -34,5 +34,19 @@
 			compatible = "fixed-clock";
 			clock-frequency = <100000000>;
 		};
+
+		CLKS_GMAC0_PHY: clockgenA1@7 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+			clock-output-names = "CLKS_GMAC0_PHY";
+		};
+
+		CLKS_ETH1_PHY: clockgenA0@7 {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+			clock-output-names = "CLKS_ETH1_PHY";
+		};
 	};
 };
diff --git a/arch/arm/boot/dts/stih415-pinctrl.dtsi b/arch/arm/boot/dts/stih415-pinctrl.dtsi
index 1d322b2..c087af8 100644
--- a/arch/arm/boot/dts/stih415-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stih415-pinctrl.dtsi
@@ -86,6 +86,57 @@
 					};
 				};
 			};
+
+			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	0>;
+						 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 IN   NICLK	1000	CLK_A>;
+					};
+				};
+
+				pinctrl_rgmii1: rgmii1-0 {
+					st,pins {
+						 txd0 =	 <&PIO0 0 ALT1 OUT DE_IO	1000	CLK_A>;
+						 txd1 =	 <&PIO0 1 ALT1 OUT DE_IO	1000	CLK_A>;
+						 txd2 =	 <&PIO0 2 ALT1 OUT DE_IO	1000	CLK_A>;
+						 txd3 =	 <&PIO0 3 ALT1 OUT DE_IO	1000	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	0	CLK_A>;
+						 rxd1 =	 <&PIO1 5 ALT1 IN DE_IO	0	CLK_A>;
+						 rxd2 =	 <&PIO1 6 ALT1 IN DE_IO	0	CLK_A>;
+						 rxd3 =	 <&PIO1 7 ALT1 IN DE_IO	0	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 {
@@ -197,6 +248,37 @@
 					};
 				};
 			};
+
+			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 	3000>;
+					 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	1000	CLK_A>;
+
+					};
+				};
+			};
 		};
 
 		pin-controller-left {
diff --git a/arch/arm/boot/dts/stih415.dtsi b/arch/arm/boot/dts/stih415.dtsi
index 0c0776e..c2b18c8 100644
--- a/arch/arm/boot/dts/stih415.dtsi
+++ b/arch/arm/boot/dts/stih415.dtsi
@@ -94,5 +94,61 @@
 			pinctrl-names 	= "default";
 			pinctrl-0	= <&pinctrl_sbc_serial1>;
 		};
+
+		ethernet0: ethernet0{
+			#address-cells = <1>;
+			#size-cells = <1>;
+			status 		= "disabled";
+			compatible		= "st,stih415-dwmac";
+			reg			= <0x148 0x4>;
+			st,syscon	= <&syscfg_rear>;
+			resets			= <&softreset STIH415_ETH0_SOFTRESET>;
+			ranges;
+
+			dwmac0:dwmac@fe810000 {
+				device_type 	= "network";
+				compatible	= "snps,dwmac", "snps,dwmac-3.610";
+				status 		= "disabled";
+				reg 		= <0xfe810000 0x8000>;
+				interrupts 	= <0 147 0>, <0 148 0>, <0 149 0>;
+				interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+
+				snps,pbl 	= <32>;
+				snps,mixed-burst;
+
+				pinctrl-names 	= "default";
+				pinctrl-0	= <&pinctrl_mii0>;
+				clock-names	= "stmmaceth";
+				clocks		= <&CLKS_GMAC0_PHY>;
+			};
+		};
+
+		ethernet1: ethernet1 {
+			#address-cells = <1>;
+			#size-cells = <1>;
+			status 		= "disabled";
+			compatible		= "st,stih415-dwmac";
+			reg			= <0x74 0x4>;
+			st,syscon		= <&syscfg_sbc>;
+			resets			= <&softreset STIH415_ETH1_SOFTRESET>;
+			ranges;
+
+			dwmac1: dwmac@fef08000 {
+				device_type = "network";
+				compatible	= "snps,dwmac", "snps,dwmac-3.610";
+				status 		= "disabled";
+				reg		= <0xfef08000 0x8000>;
+				interrupts 	= <0 150 0>, <0 151 0>, <0 152 0>;
+				interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
+
+				snps,pbl	= <32>;
+				snps,mixed-burst;
+
+				pinctrl-names 	= "default";
+				pinctrl-0	= <&pinctrl_mii1>;
+				clock-names	= "stmmaceth";
+				clocks		= <&CLKS_ETH1_PHY>;
+			};
+		};
 	};
 };
diff --git a/arch/arm/boot/dts/stih41x-b2000.dtsi b/arch/arm/boot/dts/stih41x-b2000.dtsi
index 8e694d2..9ae9ca9 100644
--- a/arch/arm/boot/dts/stih41x-b2000.dtsi
+++ b/arch/arm/boot/dts/stih41x-b2000.dtsi
@@ -20,6 +20,8 @@
 
 	aliases {
 		ttyAS0 = &serial2;
+		ethernet0 = &dwmac0;
+		ethernet1 = &dwmac1;
 	};
 
 	soc {
@@ -37,5 +39,35 @@
 			};
 		};
 
+		ethernet0: ethernet0{
+			status 		= "okay";
+			st,tx-retime-src	= "txclk";
+
+			dwmac0:dwmac@fe810000 {
+				status			= "okay";
+				phy-mode		= "mii";
+				snps,phy-addr 		= <0x1>;
+
+				snps,reset-gpio 	= <&PIO106 2>;
+				snps,reset-active-low;
+				snps,reset-delays-us 	= <0 10000 10000>;
+			};
+		};
+
+		ethernet1: ethernet1 {
+			status 		= "okay";
+			st,tx-retime-src	= "txclk";
+
+			dwmac1: dwmac@fef08000 {
+				status			= "okay";
+				phy-mode		= "mii";
+				snps,phy-addr 		= <0x1>;
+
+				snps,reset-gpio 	= <&PIO4 7>;
+				snps,reset-active-low;
+				snps,reset-delays-us 	= <0 10000 10000>;
+			};
+		};
+
 	};
 };
diff --git a/arch/arm/boot/dts/stih41x-b2020.dtsi b/arch/arm/boot/dts/stih41x-b2020.dtsi
index 133e181..7ce1380 100644
--- a/arch/arm/boot/dts/stih41x-b2020.dtsi
+++ b/arch/arm/boot/dts/stih41x-b2020.dtsi
@@ -19,6 +19,7 @@
 
 	aliases {
 		ttyAS0 = &sbc_serial1;
+		ethernet1 = &dwmac1;
 	};
 	soc {
 		sbc_serial1: serial@fe531000 {
@@ -38,5 +39,37 @@
 				default-state = "off";
 			};
 		};
+
+		/**
+		* ethernet clk routing:
+		* for
+		* 	max-speed = <1000>;
+		* set
+		* 	st,tx-retime-src	= "clk_125";
+		*
+		* for
+		*	max-speed = <100>;
+		* set
+		*	st,tx-retime-src	= "clkgen";
+		*/
+
+		ethernet1: ethernet1 {
+			status 		= "okay";
+			st,tx-retime-src	= "clkgen";
+
+			dwmac1: dwmac@fef08000 {
+				status			= "okay";
+				phy-mode		= "rgmii-id";
+				max-speed		= <100>;
+				snps,phy-addr 		= <0x1>;
+
+				snps,reset-gpio 	= <&PIO3 0>;
+				snps,reset-active-low;
+				snps,reset-delays-us 	= <0 10000 10000>;
+
+				pinctrl-0	= <&pinctrl_rgmii1>;
+			};
+		};
+
 	};
 };
-- 
1.7.6.5

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