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authorJaedon Shin <jaedon.shin@gmail.com>2015-11-26 11:56:31 +0900
committerTejun Heo <tj@kernel.org>2015-11-30 09:57:32 -0500
commitb46f79bc78e00c392c5cb3eb56c5ee94e4142bcf (patch)
tree71f51477c53def634686893b8612dd3952592593 /drivers/ata
parent7de3244530bf418cefdb64b635ee2d64ef63e3c9 (diff)
ata: ahci_brcmstb: add a quirk for MIPS-based platforms
Whereas ARM-based platforms have four phy interface registers and information, the MIPS-based platforms have only three registers, and there are no information and documentation. In the original BSP, It using "strict-ahci" did not control these registers. Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com> Tested-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Brian Norris <computersforpeace@gmail.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/ahci_brcmstb.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/ata/ahci_brcmstb.c b/drivers/ata/ahci_brcmstb.c
index 69b8b0252c58..49f5a9ea17fb 100644
--- a/drivers/ata/ahci_brcmstb.c
+++ b/drivers/ata/ahci_brcmstb.c
@@ -71,6 +71,7 @@
enum brcm_ahci_quirks {
BRCM_AHCI_QUIRK_NO_NCQ = BIT(0),
+ BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE = BIT(1),
};
struct brcm_ahci_priv {
@@ -119,6 +120,9 @@ static void brcm_sata_phy_enable(struct brcm_ahci_priv *priv, int port)
void __iomem *p;
u32 reg;
+ if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
+ return;
+
/* clear PHY_DEFAULT_POWER_STATE */
p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_1;
reg = brcm_sata_readreg(p);
@@ -148,6 +152,9 @@ static void brcm_sata_phy_disable(struct brcm_ahci_priv *priv, int port)
void __iomem *p;
u32 reg;
+ if (priv->quirks & BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE)
+ return;
+
/* power-off the PHY digital logic */
p = phyctrl + SATA_TOP_CTRL_PHY_CTRL_2;
reg = brcm_sata_readreg(p);
@@ -261,8 +268,10 @@ static int brcm_ahci_probe(struct platform_device *pdev)
if (IS_ERR(priv->top_ctrl))
return PTR_ERR(priv->top_ctrl);
- if (of_device_is_compatible(dev->of_node, "brcm,bcm7425-ahci"))
+ if (of_device_is_compatible(dev->of_node, "brcm,bcm7425-ahci")) {
priv->quirks |= BRCM_AHCI_QUIRK_NO_NCQ;
+ priv->quirks |= BRCM_AHCI_QUIRK_SKIP_PHY_ENABLE;
+ }
brcm_sata_init(priv);