@@ -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)
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: Chunfeng Yun <chunfeng.yun@mediatek.com> --- v5: no changes v4: change commit log v2~3: no changes --- drivers/phy/mediatek/phy-mtk-tphy.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) -- 2.25.0