diff options
Diffstat (limited to 'drivers/ata/sata_mv.c')
| -rw-r--r-- | drivers/ata/sata_mv.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c index f6a716ef5a1..a39779aed8f 100644 --- a/drivers/ata/sata_mv.c +++ b/drivers/ata/sata_mv.c @@ -2546,7 +2546,7 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); int fix_phy_mode4 = hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); - u32 m2, tmp; + u32 m2, m3; if (fix_phy_mode2) { m2 = readl(port_mmio + PHY_MODE2); @@ -2563,27 +2563,27 @@ static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, udelay(200); } - /* who knows what this magic does */ - tmp = readl(port_mmio + PHY_MODE3); - tmp &= ~0x7F800000; - tmp |= 0x2A800000; - writel(tmp, port_mmio + PHY_MODE3); + /* + * Gen-II/IIe PHY_MODE3 errata RM#2: + * Achieves better receiver noise performance than the h/w default: + */ + m3 = readl(port_mmio + PHY_MODE3); + m3 = (m3 & 0x1f) | (0x5555601 << 5); + writel(m3, port_mmio + PHY_MODE3); if (fix_phy_mode4) { u32 m4; m4 = readl(port_mmio + PHY_MODE4); - if (hp_flags & MV_HP_ERRATA_60X1B2) - tmp = readl(port_mmio + PHY_MODE3); - /* workaround for errata FEr SATA#10 (part 1) */ m4 = (m4 & ~(1 << 1)) | (1 << 0); - writel(m4, port_mmio + PHY_MODE4); + /* enforce bit restrictions on GenIIe devices */ + if (IS_GEN_IIE(hpriv)) + m4 = (m4 & ~0x5DE3FFFC) | (1 << 2); - if (hp_flags & MV_HP_ERRATA_60X1B2) - writel(tmp, port_mmio + PHY_MODE3); + writel(m4, port_mmio + PHY_MODE4); } /* Revert values of pre-emphasis and signal amps to the saved ones */ |