Commit 8be5a67f authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Kishon Vijay Abraham I
Browse files

phy: phy-mtk-tphy: add a property for disconnect threshold 



This is used to tune the threshold of disconnect, the index range
is [0, 15], the threshold voltage is about 400mV for 0, 700mV for
15, and the step is 20mV.

Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 7dffdebb

drivers/phy/mediatek/phy-mtk-tphy.c

+15 −2
Original line number Diff line number Diff line
@@ -60,6 +60,8 @@ 
#define U3P_USBPHYACR6		0x018

#define PA6_RG_U2_BC11_SW_EN		BIT(23)

#define PA6_RG_U2_OTG_VBUSCMP_EN	BIT(20)

#define PA6_RG_U2_DISCTH		GENMASK(7, 4)

#define PA6_RG_U2_DISCTH_VAL(x)	((0xf & (x)) << 4)

#define PA6_RG_U2_SQTH		GENMASK(3, 0)

#define PA6_RG_U2_SQTH_VAL(x)	(0xf & (x))
@@ -300,6 +302,7 @@ struct mtk_phy_instance { 
	int eye_src;

	int eye_vrt;

	int eye_term;

	int discth;

	bool bc12_en;

};
@@ -850,9 +853,12 @@ static void phy_parse_property(struct mtk_tphy *tphy, 
				 &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",

	device_property_read_u32(dev, "mediatek,discth",

				 &instance->discth);

	dev_dbg(dev, "bc12:%d, src:%d, vrt:%d, term:%d, disc:%d\n",

		instance->bc12_en, instance->eye_src,

		instance->eye_vrt, instance->eye_term);

		instance->eye_vrt, instance->eye_term,

		instance->discth);

}



static void u2_phy_props_set(struct mtk_tphy *tphy,
@@ -888,6 +894,13 @@ static void u2_phy_props_set(struct mtk_tphy *tphy, 
		tmp |= PA1_RG_TERM_SEL_VAL(instance->eye_term);

		writel(tmp, com + U3P_USBPHYACR1);

	}



	if (instance->discth) {

		tmp = readl(com + U3P_USBPHYACR6);

		tmp &= ~PA6_RG_U2_DISCTH;

		tmp |= PA6_RG_U2_DISCTH_VAL(instance->discth);

		writel(tmp, com + U3P_USBPHYACR6);

	}

}



static int mtk_phy_init(struct phy *phy)

CRA Git | Maintained and supported by SUSTech CRA and CCSE