This patch adds support for RGMII TX delay configuration on Atheros 803X, this can be enabled in debug registers. With this patch, PHY_INTERFACE_MODE_RGMII_TXID modes are now supported.
Signed-off-by: Mugunthan V N <[email protected]> --- drivers/net/phy/at803x.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 63444b7..dda07ed 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -27,6 +27,10 @@ #define AT803X_MMD_ACCESS_CONTROL 0x0D #define AT803X_MMD_ACCESS_CONTROL_DATA 0x0E #define AT803X_FUNC_DATA 0x4003 +#define AT803X_DEBUG_ADDR 0x1D +#define AT803X_DEBUG_DATA 0x1E +#define AT803X_DEBUG_SYSTEM_MODE_CTRL 0x05 +#define AT803X_DEBUG_RGMII_TX_CLK_DLY BIT(8) MODULE_DESCRIPTION("Atheros 803x PHY driver"); MODULE_AUTHOR("Matus Ujhelyi"); @@ -99,6 +103,7 @@ static void at803x_get_wol(struct phy_device *phydev, static int at803x_config_init(struct phy_device *phydev) { int val; + int ret; u32 features; features = SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI | @@ -133,6 +138,17 @@ static int at803x_config_init(struct phy_device *phydev) phydev->supported = features; phydev->advertising = features; + if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) { + ret = phy_write(phydev, AT803X_DEBUG_ADDR, + AT803X_DEBUG_SYSTEM_MODE_CTRL); + if (ret) + return ret; + ret = phy_write(phydev, AT803X_DEBUG_DATA, + AT803X_DEBUG_RGMII_TX_CLK_DLY); + if (ret) + return ret; + } + return 0; } -- 1.7.9.5 _______________________________________________ devicetree-discuss mailing list [email protected] https://lists.ozlabs.org/listinfo/devicetree-discuss
