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phy: rockchip: inno-usb2: add pre-emphasis at RK356x tuning

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Signed-off-by: Ren Jianing <jianing.ren@rock-chips.com>
Change-Id: Ie6375b363d4ca641b971b331971ce7985d985075
This commit is contained in:
Ren Jianing
2021-03-15 17:59:35 +08:00
committed by Tao Huang
parent f07e966dbd
commit 365de1ccfa
1 changed files with 12 additions and 0 deletions
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12
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@@ -2241,6 +2241,18 @@ static int rk3568_usb2phy_tuning(struct rockchip_usb2phy *rphy)
/* turn off differential reciver in suspend mode */
writel(reg & ~BIT(2), rphy->phy_base + 0x30);
reg = readl(rphy->phy_base);
/* Enable otg port pre-emphasis during non-chirp phase */
reg &= ~(0x07 << 0);
reg |= (0x04 << 0);
writel(reg, rphy->phy_base);
reg = readl(rphy->phy_base + 0x0400);
/* Enable host port pre-emphasis during non-chirp phase */
reg &= ~(0x07 << 0);
reg |= (0x04 << 0);
writel(reg, rphy->phy_base + 0x0400);
if (rphy->phy_cfg->reg == 0xfe8a0000) {
/*
* Set the bvalid filter time to 10ms