diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch b/target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch new file mode 100644 index 0000000000..4b230cd622 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0177-phy-phy-mtk-tphy-use-auto-instead-of-force-to-bypass.patch @@ -0,0 +1,80 @@ +From dacdae142ffd909ed6718adb05af74ff800da668 Mon Sep 17 00:00:00 2001 +From: Chunfeng Yun <chunfeng.yun@mediatek.com> +Date: Thu, 7 Dec 2017 19:53:34 +0800 +Subject: [PATCH 177/224] phy: phy-mtk-tphy: use auto instead of force to + bypass utmi signals + +When system is running, if usb2 phy is forced to bypass utmi signals, +all PLL will be turned off, and it can't detect device connection +anymore, so replace force mode with auto mode which can bypass utmi +signals automatically if no device attached for normal flow. +But keep the force mode to fix RX sensitivity degradation issue. + +Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> +Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> +--- + drivers/phy/mediatek/phy-mtk-tphy.c | 19 +++++++------------ + 1 file changed, 7 insertions(+), 12 deletions(-) + +diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c +index 402385f2562a..54cc44b2d289 100644 +--- a/drivers/phy/mediatek/phy-mtk-tphy.c ++++ b/drivers/phy/mediatek/phy-mtk-tphy.c +@@ -440,9 +440,9 @@ static void u2_phy_instance_init(struct mtk_tphy *tphy, + u32 index = instance->index; + u32 tmp; + +- /* switch to USB function. (system register, force ip into usb mode) */ ++ /* switch to USB function, and enable usb pll */ + tmp = readl(com + U3P_U2PHYDTM0); +- tmp &= ~P2C_FORCE_UART_EN; ++ tmp &= ~(P2C_FORCE_UART_EN | P2C_FORCE_SUSPENDM); + tmp |= P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0); + writel(tmp, com + U3P_U2PHYDTM0); + +@@ -502,10 +502,8 @@ static void u2_phy_instance_power_on(struct mtk_tphy *tphy, + u32 index = instance->index; + u32 tmp; + +- /* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */ + tmp = readl(com + U3P_U2PHYDTM0); +- tmp &= ~(P2C_FORCE_SUSPENDM | P2C_RG_XCVRSEL); +- tmp &= ~(P2C_RG_DATAIN | P2C_DTM0_PART_MASK); ++ tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN | P2C_DTM0_PART_MASK); + writel(tmp, com + U3P_U2PHYDTM0); + + /* OTG Enable */ +@@ -540,7 +538,6 @@ static void u2_phy_instance_power_off(struct mtk_tphy *tphy, + + tmp = readl(com + U3P_U2PHYDTM0); + tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN); +- tmp |= P2C_FORCE_SUSPENDM; + writel(tmp, com + U3P_U2PHYDTM0); + + /* OTG Disable */ +@@ -548,18 +545,16 @@ static void u2_phy_instance_power_off(struct mtk_tphy *tphy, + tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN; + writel(tmp, com + U3P_USBPHYACR6); + +- /* let suspendm=0, set utmi into analog power down */ +- tmp = readl(com + U3P_U2PHYDTM0); +- tmp &= ~P2C_RG_SUSPENDM; +- writel(tmp, com + U3P_U2PHYDTM0); +- udelay(1); +- + tmp = readl(com + U3P_U2PHYDTM1); + tmp &= ~(P2C_RG_VBUSVALID | P2C_RG_AVALID); + tmp |= P2C_RG_SESSEND; + writel(tmp, com + U3P_U2PHYDTM1); + + if (tphy->pdata->avoid_rx_sen_degradation && index) { ++ tmp = readl(com + U3P_U2PHYDTM0); ++ tmp &= ~(P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM); ++ writel(tmp, com + U3P_U2PHYDTM0); ++ + tmp = readl(com + U3D_U2PHYDCR0); + tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; + writel(tmp, com + U3D_U2PHYDCR0); +-- +2.11.0 + |