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Subject[PATCH 21/32] phy: phy-mt65xx-usb3: disable 100uA extraction from SS port to HS port
Date
From: Chunfeng Yun <chunfeng.yun@mediatek.com>

There will be a problem if SS port is diasbled and HS port extracts
100uA from SS port, so disable extract 100uA from SS port in the case,
when disable it, PA0_RG_USB20_INTR_EN should be set, otherwise HS port
only works on LS.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/phy/phy-mt65xx-usb3.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c
index e99788babfb9..59b110f795c3 100644
--- a/drivers/phy/phy-mt65xx-usb3.c
+++ b/drivers/phy/phy-mt65xx-usb3.c
@@ -46,6 +46,7 @@

#define U3P_USBPHYACR0 0x000
#define PA0_RG_U2PLL_FORCE_ON BIT(15)
+#define PA0_RG_USB20_INTR_EN BIT(5)

#define U3P_USBPHYACR2 0x008
#define PA2_RG_SIF_U2PLL_FORCE_EN BIT(18)
@@ -339,6 +340,15 @@ static void phy_instance_init(struct mt65xx_u3phy *u3phy,
tmp &= ~P2C_RG_UART_EN;
writel(tmp, com + U3P_U2PHYDTM1);

+ tmp = readl(com + U3P_USBPHYACR0);
+ tmp |= PA0_RG_USB20_INTR_EN;
+ writel(tmp, com + U3P_USBPHYACR0);
+
+ /* disable switch 100uA current to SSUSB */
+ tmp = readl(com + U3P_USBPHYACR5);
+ tmp &= ~PA5_RG_U2_HS_100U_U3_EN;
+ writel(tmp, com + U3P_USBPHYACR5);
+
if (!index) {
tmp = readl(com + U3P_U2PHYACR4);
tmp &= ~P2C_U2_GPIO_CTR_MSK;
@@ -393,13 +403,6 @@ static void phy_instance_power_on(struct mt65xx_u3phy *u3phy,
tmp |= PA6_RG_U2_OTG_VBUSCMP_EN;
writel(tmp, com + U3P_USBPHYACR6);

- if (!index) {
- /* switch 100uA current to SSUSB */
- tmp = readl(com + U3P_USBPHYACR5);
- tmp |= PA5_RG_U2_HS_100U_U3_EN;
- writel(tmp, com + U3P_USBPHYACR5);
- }
-
tmp = readl(com + U3P_U2PHYDTM1);
tmp |= P2C_RG_VBUSVALID | P2C_RG_AVALID;
tmp &= ~P2C_RG_SESSEND;
@@ -435,13 +438,6 @@ static void phy_instance_power_off(struct mt65xx_u3phy *u3phy,
tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN;
writel(tmp, com + U3P_USBPHYACR6);

- if (!index) {
- /* switch 100uA current back to USB2.0 */
- tmp = readl(com + U3P_USBPHYACR5);
- tmp &= ~PA5_RG_U2_HS_100U_U3_EN;
- writel(tmp, com + U3P_USBPHYACR5);
- }
-
/* let suspendm=0, set utmi into analog power down */
tmp = readl(com + U3P_U2PHYDTM0);
tmp &= ~P2C_RG_SUSPENDM;
--
2.11.0
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