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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>
This commit is contained in:
Chunfeng Yun 2018-06-29 10:20:30 +08:00 committed by Kishon Vijay Abraham I
parent 8158e917d9
commit d4f97f10da
1 changed files with 13 additions and 0 deletions
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13
drivers/phy/mediatek/phy-mtk-tphy.c
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@ -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);