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| author | Jaedon Shin <jaedon.shin@gmail.com> | 2015-11-26 11:56:31 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2015-11-30 09:57:32 -0500 |
| commit | b46f79bc78e00c392c5cb3eb56c5ee94e4142bcf (patch) | |
| tree | 71f51477c53def634686893b8612dd3952592593 | |
| parent | 7de3244530bf418cefdb64b635ee2d64ef63e3c9 (diff) | |
| download | linux-stable-b46f79bc78e00c392c5cb3eb56c5ee94e4142bcf.tar.gz linux-stable-b46f79bc78e00c392c5cb3eb56c5ee94e4142bcf.tar.bz2 linux-stable-b46f79bc78e00c392c5cb3eb56c5ee94e4142bcf.zip | |
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>
| -rw-r--r-- | drivers/ata/ahci_brcmstb.c | 11 |
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); |