diff options
Diffstat (limited to 'board/toradex/verdin-imx8mm/verdin-imx8mm.c')
| -rw-r--r-- | board/toradex/verdin-imx8mm/verdin-imx8mm.c | 73 |
1 files changed, 51 insertions, 22 deletions
diff --git a/board/toradex/verdin-imx8mm/verdin-imx8mm.c b/board/toradex/verdin-imx8mm/verdin-imx8mm.c index 1edae1e545..56d1490166 100644 --- a/board/toradex/verdin-imx8mm/verdin-imx8mm.c +++ b/board/toradex/verdin-imx8mm/verdin-imx8mm.c @@ -100,28 +100,57 @@ static int setup_fec(void) int board_phy_config(struct phy_device *phydev) { -/* - * The PHY adds 1.2ns for the RXC and 0ns for TXC clock by default. The MAC - * and the layout don't add a skew between clock and data. - * Add 0.3ns for the RXC path and 0.96 + 0.42 ns (1.38 ns) for the TXC path - * to get the required clock skews. - */ - /* control data pad skew - devaddr = 0x02, register = 0x04 */ - ksz9031_phy_extended_write(phydev, 0x02, - MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW, - MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0070); - /* rx data pad skew - devaddr = 0x02, register = 0x05 */ - ksz9031_phy_extended_write(phydev, 0x02, - MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW, - MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x7777); - /* tx data pad skew - devaddr = 0x02, register = 0x06 */ - ksz9031_phy_extended_write(phydev, 0x02, - MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW, - MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); - /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */ - ksz9031_phy_extended_write(phydev, 0x02, - MII_KSZ9031_EXT_RGMII_CLOCK_SKEW, - MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03f4); + int tmp; + + switch(ksz9xx1_phy_get_id(phydev) & MII_KSZ9x31_SILICON_REV_MASK) { + case PHY_ID_KSZ9031: + /* + * The PHY adds 1.2ns for the RXC and 0ns for TXC clock by default. The MAC + * and the layout don't add a skew between clock and data. + * Add 0.3ns for the RXC path and 0.96 + 0.42 ns (1.38 ns) for the TXC path + * to get the required clock skews. + */ + /* control data pad skew - devaddr = 0x02, register = 0x04 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0070); + /* rx data pad skew - devaddr = 0x02, register = 0x05 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x7777); + /* tx data pad skew - devaddr = 0x02, register = 0x06 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x0000); + /* gtx and rx clock pad skew - devaddr = 0x02, register = 0x08 */ + ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9031_EXT_RGMII_CLOCK_SKEW, + MII_KSZ9031_MOD_DATA_NO_POST_INC, 0x03f4); + break; + case PHY_ID_KSZ9131: + default: + /* read rxc dll control - devaddr = 0x2, register = 0x4c */ + tmp = ksz9031_phy_extended_read(phydev, 0x02, + MII_KSZ9131_EXT_RGMII_2NS_SKEW_RXDLL, + MII_KSZ9031_MOD_DATA_NO_POST_INC); + /* disable rxdll bypass (enable 2ns skew delay on RXC) */ + tmp &= ~MII_KSZ9131_RXTXDLL_BYPASS; + /* rxc data pad skew 2ns - devaddr = 0x02, register = 0x4c */ + tmp = ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9131_EXT_RGMII_2NS_SKEW_RXDLL, + MII_KSZ9031_MOD_DATA_NO_POST_INC, tmp); + /* read txc dll control - devaddr = 0x02, register = 0x4d */ + tmp = ksz9031_phy_extended_read(phydev, 0x02, + MII_KSZ9131_EXT_RGMII_2NS_SKEW_TXDLL, + MII_KSZ9031_MOD_DATA_NO_POST_INC); + /* disable txdll bypass (enable 2ns skew delay on TXC) */ + tmp &= ~MII_KSZ9131_RXTXDLL_BYPASS; + /* rxc data pad skew 2ns - devaddr = 0x02, register = 0x4d */ + tmp = ksz9031_phy_extended_write(phydev, 0x02, + MII_KSZ9131_EXT_RGMII_2NS_SKEW_TXDLL, + MII_KSZ9031_MOD_DATA_NO_POST_INC, tmp); + break; + } if (phydev->drv->config) phydev->drv->config(phydev); |