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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2018-06-29 10:20:30 +0800 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2018-07-10 13:45:08 +0530 |
| commit | d4f97f10dac48bf49a199b826c3e8f1c4798bea2 (patch) | |
| tree | 49bedadd2a7637a36d6973d85c8135907acea70e /drivers/phy/mediatek | |
| parent | 8158e917d91cb0be7e6177a7e839fcbb89d63867 (diff) | |
| download | linux-d4f97f10dac48bf49a199b826c3e8f1c4798bea2.tar.bz2 | |
phy: phy-mtk-tphy: add property for BC12
Some platforms support BC12 which is disabled by default,
here add a property to enable it if need
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy/mediatek')
| -rw-r--r-- | drivers/phy/mediatek/phy-mtk-tphy.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index 9ab6f2e73c58..3eb8e1bd7b78 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -101,6 +101,9 @@ #define P2C_RG_AVALID BIT(2) #define P2C_RG_IDDIG BIT(1) +#define U3P_U2PHYBC12C 0x080 +#define P2C_RG_CHGDT_EN BIT(0) + #define U3P_U3_CHIP_GPIO_CTLD 0x0c #define P3C_REG_IP_SW_RST BIT(31) #define P3C_MCU_BUS_CK_GATE_EN BIT(30) @@ -297,6 +300,7 @@ struct mtk_phy_instance { int eye_src; int eye_vrt; int eye_term; + bool bc12_en; }; struct mtk_tphy { @@ -839,12 +843,16 @@ static void phy_parse_property(struct mtk_tphy *tphy, if (instance->type != PHY_TYPE_USB2) return; + instance->bc12_en = device_property_read_bool(dev, "mediatek,bc12"); device_property_read_u32(dev, "mediatek,eye-src", &instance->eye_src); device_property_read_u32(dev, "mediatek,eye-vrt", &instance->eye_vrt); device_property_read_u32(dev, "mediatek,eye-term", &instance->eye_term); + dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d\n", + instance->bc12_en, instance->eye_src, + instance->eye_vrt, instance->eye_term); } static void u2_phy_props_set(struct mtk_tphy *tphy, @@ -854,6 +862,11 @@ static void u2_phy_props_set(struct mtk_tphy *tphy, void __iomem *com = u2_banks->com; u32 tmp; + if (instance->bc12_en) { + tmp = readl(com + U3P_U2PHYBC12C); + tmp |= P2C_RG_CHGDT_EN; /* BC1.2 path Enable */ + writel(tmp, com + U3P_U2PHYBC12C); + } if (instance->eye_src) { tmp = readl(com + U3P_USBPHYACR5); |