diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2020-01-08 04:52:01 +0300 |
|---|---|---|
| committer | Kishon Vijay Abraham I <kishon@ti.com> | 2020-03-20 17:04:29 +0300 |
| commit | 8be5a67f7106189f8217b749eeec9a9ef8cd2bba (patch) | |
| tree | db2ba83e703ac61c738e1e026bdfc657606e54ae /drivers/phy | |
| parent | 7dffdebb61806164179c4e7a0d05d3f391b57573 (diff) | |
| download | linux-8be5a67f7106189f8217b749eeec9a9ef8cd2bba.tar.xz | |
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: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/mediatek/phy-mtk-tphy.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c index cb2ed3b25068..5afe33621dbc 100644 --- a/drivers/phy/mediatek/phy-mtk-tphy.c +++ b/drivers/phy/mediatek/phy-mtk-tphy.c @@ -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) |