Commit 9013d64e661fc ("ata: sata_mv: fix disk hotplug for Armada
370/XP SoCs") added some manipulation of the LP_PHY_CTL register, but
using magic values. This commit changes the code to use proper
definitions for the LP_PHY_CTL register, which allows to document what
the different bits are doing.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
---
drivers/ata/sata_mv.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index f8c33e3..0281785 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -306,6 +306,11 @@ enum {
MV5_PHY_CTL = 0x0C,
SATA_IFCFG = 0x050,
LP_PHY_CTL = 0x058,
+ LP_PHY_CTL_PIN_PU_PLL = (1 << 0),
+ LP_PHY_CTL_PIN_PU_RX = (1 << 1),
+ LP_PHY_CTL_PIN_PU_TX = (1 << 2),
+ LP_PHY_CTL_GEN_TX_3G = (1 << 5),
+ LP_PHY_CTL_GEN_RX_3G = (1 << 9),
MV_M2_PREAMP_MASK = 0x7e0,
@@ -1391,10 +1396,17 @@ static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
/*
* Set PHY speed according to SControl speed.
*/
- if ((val & 0xf0) == 0x10)
- writelfl(0x7, lp_phy_addr);
- else
- writelfl(0x227, lp_phy_addr);
+ u32 lp_phy_val =
+ LP_PHY_CTL_PIN_PU_PLL |
+ LP_PHY_CTL_PIN_PU_RX |
+ LP_PHY_CTL_PIN_PU_TX;
+
+ if ((val & 0xf0) != 0x10)
+ lp_phy_val |=
+ LP_PHY_CTL_GEN_TX_3G |
+ LP_PHY_CTL_GEN_RX_3G;
+
+ writelfl(lp_phy_val, lp_phy_addr);
}
}
writelfl(val, addr);
--
2.1.0
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