[PATCH v3 8/8] board: gw_ventana: enable MV88E61XX DSA support

[Tim Harvey]

Add MV88E61XX DSA support:
 - update dt: U-Boot dsa driver requires different device-tree syntax
   than the linux driver in order to link the dsa ports to the mdio bus.
 - update defconfig
 - replace mv88e61xx_hw_reset weak override with board_phy_config support
   for mv88e61xx configuration that is outside the scope of the DSA driver

Signed-off-by: Tim Harvey <tharvey at gateworks.com>
---
v3:
 - move mdio's mdio at 0 subnode
v2: no changes
---
 arch/arm/dts/imx6qdl-gw5904.dtsi        | 41 ++++++++++++++++++++
 board/gateworks/gw_ventana/gw_ventana.c | 50 +++++++++----------------
 configs/gwventana_gw5904_defconfig      |  7 ++--
 3 files changed, 62 insertions(+), 36 deletions(-)

diff --git a/arch/arm/dts/imx6qdl-gw5904.dtsi b/arch/arm/dts/imx6qdl-gw5904.dtsi
index 286c7a9924c2..1b2f70d1ccb2 100644
--- a/arch/arm/dts/imx6qdl-gw5904.dtsi
+++ b/arch/arm/dts/imx6qdl-gw5904.dtsi
@@ -219,6 +219,33 @@
 			compatible = "marvell,mv88e6085";
 			reg = <0>;
 
+			mdios {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				mdio at 0 {
+					reg = <0>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					sw_phy0: ethernet-phy at 0 {
+						reg = <0x0>;
+					};
+
+					sw_phy1: ethernet-phy at 1 {
+						reg = <0x1>;
+					};
+
+					sw_phy2: ethernet-phy at 2 {
+						reg = <0x2>;
+					};
+
+					sw_phy3: ethernet-phy at 3 {
+						reg = <0x3>;
+					};
+				};
+			};
+
 			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;
@@ -226,27 +253,41 @@
 				port at 0 {
 					reg = <0>;
 					label = "lan4";
+					phy-mode = "internal";
+					phy-handle = <&sw_phy0>;
 				};
 
 				port at 1 {
 					reg = <1>;
 					label = "lan3";
+					phy-mode = "internal";
+					phy-handle = <&sw_phy1>;
 				};
 
 				port at 2 {
 					reg = <2>;
 					label = "lan2";
+					phy-mode = "internal";
+					phy-handle = <&sw_phy2>;
 				};
 
 				port at 3 {
 					reg = <3>;
 					label = "lan1";
+					phy-mode = "internal";
+					phy-handle = <&sw_phy3>;
 				};
 
 				port at 5 {
 					reg = <5>;
 					label = "cpu";
 					ethernet = <&fec>;
+					phy-mode = "rgmii-id";
+
+					fixed-link {
+						speed = <1000>;
+						full-duplex;
+					};
 				};
 			};
 		};
diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index c06630a66b66..bef3f7ef0d2b 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -68,44 +68,30 @@ int board_phy_config(struct phy_device *phydev)
 		phy_write(phydev, MDIO_DEVAD_NONE, 14, val);
 	}
 
+	/* Fixed PHY: for GW5904/GW5909 this is Marvell 88E6176 GbE Switch */
+	else if (phydev->phy_id == 0xa5a55a5a &&
+		 ((board_type == GW5904) || (board_type == GW5909))) {
+		struct mii_dev *bus = miiphy_get_dev_by_name("mdio");
+
+		puts("MV88E61XX ");
+		/* GPIO[0] output CLK125 for RGMII_REFCLK */
+		bus->write(bus, 0x1c, 0, 0x1a, (1 << 15) | (0x62 << 8) | 0xfe);
+		bus->write(bus, 0x1c, 0, 0x1a, (1 << 15) | (0x68 << 8) | 7);
+
+		/* Port 0-3 LED configuration: Table 80/82 */
+		/* LED configuration: 7:4-green (8=Activity)  3:0 amber (8=Link) */
+		bus->write(bus, 0x10, 0, 0x16, 0x8088);
+		bus->write(bus, 0x11, 0, 0x16, 0x8088);
+		bus->write(bus, 0x12, 0, 0x16, 0x8088);
+		bus->write(bus, 0x13, 0, 0x16, 0x8088);
+	}
+
 	if (phydev->drv->config)
 		phydev->drv->config(phydev);
 
 	return 0;
 }
 
-#ifdef CONFIG_MV88E61XX_SWITCH
-int mv88e61xx_hw_reset(struct phy_device *phydev)
-{
-	struct mii_dev *bus = phydev->bus;
-
-	/* GPIO[0] output, CLK125 */
-	debug("enabling RGMII_REFCLK\n");
-	bus->write(bus, 0x1c /*MV_GLOBAL2*/, 0,
-		   0x1a /*MV_SCRATCH_MISC*/,
-		   (1 << 15) | (0x62 /*MV_GPIO_DIR*/ << 8) | 0xfe);
-	bus->write(bus, 0x1c /*MV_GLOBAL2*/, 0,
-		   0x1a /*MV_SCRATCH_MISC*/,
-		   (1 << 15) | (0x68 /*MV_GPIO01_CNTL*/ << 8) | 7);
-
-	/* RGMII delay - Physical Control register bit[15:14] */
-	debug("setting port%d RGMII rx/tx delay\n", CONFIG_MV88E61XX_CPU_PORT);
-	/* forced 1000mbps full-duplex link */
-	bus->write(bus, 0x10 + CONFIG_MV88E61XX_CPU_PORT, 0, 1, 0xc0fe);
-	phydev->autoneg = AUTONEG_DISABLE;
-	phydev->speed = SPEED_1000;
-	phydev->duplex = DUPLEX_FULL;
-
-	/* LED configuration: 7:4-green (8=Activity)  3:0 amber (8=Link) */
-	bus->write(bus, 0x10, 0, 0x16, 0x8088);
-	bus->write(bus, 0x11, 0, 0x16, 0x8088);
-	bus->write(bus, 0x12, 0, 0x16, 0x8088);
-	bus->write(bus, 0x13, 0, 0x16, 0x8088);
-
-	return 0;
-}
-#endif // CONFIG_MV88E61XX_SWITCH
-
 #if defined(CONFIG_VIDEO_IPUV3)
 static void enable_hdmi(struct display_info_t const *dev)
 {
diff --git a/configs/gwventana_gw5904_defconfig b/configs/gwventana_gw5904_defconfig
index d25a8324b1df..9809bc691508 100644
--- a/configs/gwventana_gw5904_defconfig
+++ b/configs/gwventana_gw5904_defconfig
@@ -103,12 +103,11 @@ CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_USDHC=y
 CONFIG_MTD=y
 CONFIG_PHYLIB=y
-CONFIG_MV88E61XX_SWITCH=y
-CONFIG_MV88E61XX_CPU_PORT=5
-CONFIG_MV88E61XX_PHY_PORTS=0xf
-CONFIG_MV88E61XX_FIXED_PORTS=0x0
+CONFIG_MV88E61XX=y
+CONFIG_PHY_FIXED=y
 CONFIG_DM_ETH=y
 CONFIG_DM_MDIO=y
+CONFIG_DM_DSA=y
 CONFIG_E1000=y
 CONFIG_FEC_MXC=y
 CONFIG_MII=y
-- 
2.17.1