From: Stefan Riedmueller <[email protected]> The i.MX 6 requires a ref clock from the PHY when running in RGMII mode. Since the clock output from the GP_CLK pin is disabled by default on the ADIN1300 PHY we need a fixup to enable it.
Signed-off-by: Stefan Riedmueller <[email protected]> Signed-off-by: Florijan Plohl <[email protected]> --- Changes in v2: - Register the fixup once after the board specific if/else instead of in every board branch - Link to v1: https://lore.barebox.org/barebox/[email protected]/ arch/arm/boards/phytec-som-imx6/board.c | 33 +++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm/boards/phytec-som-imx6/board.c b/arch/arm/boards/phytec-som-imx6/board.c index 7e6f61bc36..031d11d816 100644 --- a/arch/arm/boards/phytec-som-imx6/board.c +++ b/arch/arm/boards/phytec-som-imx6/board.c @@ -45,6 +45,9 @@ #define DA9062_BUCK4_CFG 0x9f #define DA9062_BUCKx_MODE_SYNCHRONOUS (2 << 6) +#define PHY_ID_ADIN1300 0x0283bc30 +#define ADIN_PHY_ID_MASK 0x0fffffff + static void phyflex_err006282_workaround(void) { /* @@ -99,6 +102,33 @@ static int ksz8081_phy_fixup(struct phy_device *phydev) return 0; } +static int adin1300_phy_fixup(struct phy_device *phydev) +{ + u16 val; + /* + * Enable 125 MHz PHY clock at GP_CLK pin to the ENET_REF_CLK pin + * of the i.MX 6 + */ + + phy_write(phydev, 0x1c, 0x2109); + phy_write(phydev, 0x1b, 0x401); + phy_write(phydev, 0x10, 0xff1f); + phy_write(phydev, 0x11, 0x28); + phy_write(phydev, 0x10, 0xff3c); + phy_write(phydev, 0x11, 0x1); + + /* + * Disable advertisement of 100BASE-TX and 1000BASE-T EEE capabilities + * by clearing EEE_100_ADV and EEE_1000_ADV bits in EEE_ADV (0x8001) reg. + */ + phy_write(phydev, 0x10, 0x8001); + val = phy_read(phydev, 0x11); + val &= ~(BIT(1) | BIT(2)); + phy_write(phydev, 0x11, 0x0); + + return 0; +} + static int phycore_da9062_setup_buck_mode(void) { struct i2c_adapter *adapter = NULL; @@ -216,6 +246,9 @@ static int physom_imx6_probe(struct device *dev) return -EINVAL; } + phy_register_fixup_for_uid(PHY_ID_ADIN1300, ADIN_PHY_ID_MASK, + adin1300_phy_fixup); + switch (bootsource_get()) { case BOOTSOURCE_MMC: environment_path = basprintf("/chosen/environment-sd%d", -- 2.43.0
