diff options
| author | Timur Tabi <timur@freescale.com> | 2011-10-18 18:44:34 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2011-10-20 16:01:37 -0500 |
| commit | a836626cc4ddae53bfa46195a39194f21ad157af (patch) | |
| tree | 9fbd99ccbe888bbcaf557d354a31da9ba9d9be25 /board | |
| parent | 3b001ad26d6e03ebe2510ec8506a8425392adcf8 (diff) | |
| download | u-boot-imx-a836626cc4ddae53bfa46195a39194f21ad157af.zip u-boot-imx-a836626cc4ddae53bfa46195a39194f21ad157af.tar.gz u-boot-imx-a836626cc4ddae53bfa46195a39194f21ad157af.tar.bz2 | |
powerpc/85xx: wait for alignment before resetting SERDES RX lanes (SERDES9)
The work-around for P4080 erratum SERDES9 says that the SERDES receiver
lanes should be reset after the XAUI starts tranmitting alignment signals.
Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'board')
| -rw-r--r-- | board/freescale/corenet_ds/eth_p4080.c | 38 |
1 files changed, 30 insertions, 8 deletions
diff --git a/board/freescale/corenet_ds/eth_p4080.c b/board/freescale/corenet_ds/eth_p4080.c index 00dfa9a..7ff00d1 100644 --- a/board/freescale/corenet_ds/eth_p4080.c +++ b/board/freescale/corenet_ds/eth_p4080.c @@ -93,21 +93,43 @@ struct mii_dev *mii_dev_for_muxval(u32 muxval) return bus; } -#ifdef CONFIG_SYS_P4080_ERRATUM_SERDES9 +#if defined(CONFIG_SYS_P4080_ERRATUM_SERDES9) && defined(CONFIG_PHY_TERANETICS) int board_phy_config(struct phy_device *phydev) { - /* - * If this is the 10G PHY, and we switched it to fiber, - * we need to reset the serdes link for SERDES9 - */ - if ((phydev->port == PORT_FIBRE) && (phydev->drv->uid == 0x00a19410)) { + if (phydev->drv->uid == PHY_UID_TN2020) { + unsigned long timeout = 1 * 1000; /* 1 seconds */ enum srds_prtcl device; + /* + * Wait for the XAUI to come out of reset. This is when it + * starts transmitting alignment signals. + */ + while (--timeout) { + int reg = phy_read(phydev, MDIO_MMD_PHYXS, MDIO_CTRL1); + if (reg < 0) { + printf("TN2020: Error reading from PHY at " + "address %u\n", phydev->addr); + break; + } + /* + * Note that we've never actually seen + * MDIO_CTRL1_RESET set to 1. + */ + if ((reg & MDIO_CTRL1_RESET) == 0) + break; + udelay(1000); + } + + if (!timeout) { + printf("TN2020: Timeout waiting for PHY at address %u " + " to reset.\n", phydev->addr); + } + switch (phydev->addr) { - case 4: + case CONFIG_SYS_FM1_10GEC1_PHY_ADDR: device = XAUI_FM1; break; - case 0: + case CONFIG_SYS_FM2_10GEC1_PHY_ADDR: device = XAUI_FM2; break; default: |