[PATCH v9 8/8] board: gw_ventana: enable MV88E61XX DSA support

Tim Harvey
2022-11-30T17:44:14Z

Add MV88E61XX DSA support:
- update dt to provide internal MDIO bus and port handles.
U-Boot requires a more restrictive subset of the dt bindings
required by Linux for the sake of simplifying code
- update defconfig to remove old driver and enable new one
- replace mv88e61xx_hw_reset weak override with board_phy_config support
for register configuration that is outside the scope of the DSA driver

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
---
v9:
- no changes
v8:
- added phy-mode = "internal" to phy ports
v7:
- added Vladimir's rb tag
v6:
- update commit message
- squash accidently change to mv88e6xxx driver into previous patch
- remove unused label for cpu port
v5:
- fix typo in defconfig s/MV88E61XX/MV88E6XXX
- added Fabio's rb tag
v4:
- use standard Linux internal MDIO dt structure
- use PHY_FIXED_ID define
v3:
- move mdio's mdio@0 subnode
v2: no changes
---
arch/arm/dts/imx6qdl-gw5904.dtsi | 36 +++++++++++++++++-
board/gateworks/gw_ventana/gw_ventana.c | 50 +++++++++----------------
configs/gwventana_gw5904_defconfig | 7 ++--
3 files changed, 56 insertions(+), 37 deletions(-)

diff --git a/arch/arm/dts/imx6qdl-gw5904.dtsi b/arch/arm/dts/imx6qdl-gw5904.dtsi
index 612b6e068e28..ea54922f15f8 100644
--- a/arch/arm/dts/imx6qdl-gw5904.dtsi
+++ b/arch/arm/dts/imx6qdl-gw5904.dtsi
@@ -212,6 +212,27 @@
compatible = "marvell,mv88e6085";
reg = <0>;

+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sw_phy0: ethernet-phy@0 {
+ reg = <0x0>;
+ };
+
+ sw_phy1: ethernet-phy@1 {
+ reg = <0x1>;
+ };
+
+ sw_phy2: ethernet-phy@2 {
+ reg = <0x2>;
+ };
+
+ sw_phy3: ethernet-phy@3 {
+ reg = <0x3>;
+ };
+ };
+
ports {
#address-cells = <1>;
#size-cells = <0>;
@@ -219,27 +240,40 @@
port@0 {
reg = <0>;
label = "lan4";
+ phy-handle = <&sw_phy0>;
+ phy-mode = "internal";
};

port@1 {
reg = <1>;
label = "lan3";
+ phy-handle = <&sw_phy1>;
+ phy-mode = "internal";
};

port@2 {
reg = <2>;
label = "lan2";
+ phy-handle = <&sw_phy2>;
+ phy-mode = "internal";
};

port@3 {
reg = <3>;
label = "lan1";
+ phy-handle = <&sw_phy3>;
+ phy-mode = "internal";
};

port@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 0ecfd98c2261..683def7e9f71 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -83,44 +83,30 @@ int board_phy_config(struct phy_device *phydev)
break;
}

+ /* Fixed PHY: for GW5904/GW5909 this is Marvell 88E6176 GbE Switch */
+ if (phydev->phy_id == PHY_FIXED_ID &&
+ (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 f58abd9c5e57..d2c48656de91 100644
--- a/configs/gwventana_gw5904_defconfig
+++ b/configs/gwventana_gw5904_defconfig
@@ -110,13 +110,12 @@ 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_PHY_FIXED=y
CONFIG_DM_MDIO=y
+CONFIG_DM_DSA=y
CONFIG_E1000=y
CONFIG_FEC_MXC=y
+CONFIG_MV88E6XXX=y
CONFIG_MII=y
CONFIG_PCI=y
CONFIG_PCIE_IMX=y
--
2.25.1