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phy: rockchip: inno-usb2: support rk3326s and px30s tuning

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Tuing pre-emphasis and turn off differential receiver in suspend mode
for rk3326s and px30s SoCs.

Fix some pc can not recognize the device when using 5m cable, so tuning
usb phy squelch trigger point configure to 100mv for px30s.

Signed-off-by: Jianwei Zheng <jianwei.zheng@rock-chips.com>
Change-Id: Ida216e8951c1f1dad19fa3ff4c31ede6a53b3458
This commit is contained in:
Jianwei Zheng
2021-12-07 16:30:21 +08:00
committed by Tao Huang
parent 41f9bdf3cf
commit 711167d7b0
1 changed files with 55 additions and 16 deletions
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71
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@@ -2496,26 +2496,65 @@ static int rk3328_usb2phy_tuning(struct rockchip_usb2phy *rphy)
{
int ret;
/* Open debug mode for tuning */
ret = regmap_write(rphy->grf, 0x2c, 0xffff0400);
if (ret)
return ret;
if (soc_is_px30s()) {
/* Enable otg port pre-emphasis during non-chirp phase */
ret = regmap_update_bits(rphy->grf, 0x8000, GENMASK(2, 0), BIT(2));
if (ret)
return ret;
/* Open pre-emphasize in non-chirp state for otg port */
ret = regmap_write(rphy->grf, 0x0, 0x00070004);
if (ret)
return ret;
/* Set otg port squelch trigger point configure to 100mv */
ret = regmap_update_bits(rphy->grf, 0x8004, GENMASK(7, 5), 0x40);
if (ret)
return ret;
/* Open pre-emphasize in non-chirp state for host port */
ret = regmap_write(rphy->grf, 0x30, 0x00070004);
if (ret)
return ret;
ret = regmap_update_bits(rphy->grf, 0x8008, BIT(0), 0x1);
if (ret)
return ret;
/* Turn off differential receiver in suspend mode */
ret = regmap_write(rphy->grf, 0x18, 0x00040000);
if (ret)
return ret;
/* Turn off otg port differential reciver in suspend mode */
ret = regmap_update_bits(rphy->grf, 0x8030, BIT(2), 0);
if (ret)
return ret;
/* Enable host port pre-emphasis during non-chirp phase */
ret = regmap_update_bits(rphy->grf, 0x8400, GENMASK(2, 0), BIT(2));
if (ret)
return ret;
/* Set host port squelch trigger point configure to 100mv */
ret = regmap_update_bits(rphy->grf, 0x8404, GENMASK(7, 5), 0x40);
if (ret)
return ret;
ret = regmap_update_bits(rphy->grf, 0x8408, BIT(0), 0x1);
if (ret)
return ret;
/* Turn off host port differential reciver in suspend mode */
ret = regmap_update_bits(rphy->grf, 0x8430, BIT(2), 0);
if (ret)
return ret;
} else {
/* Open debug mode for tuning */
ret = regmap_write(rphy->grf, 0x2c, 0xffff0400);
if (ret)
return ret;
/* Open pre-emphasize in non-chirp state for otg port */
ret = regmap_write(rphy->grf, 0x0, 0x00070004);
if (ret)
return ret;
/* Open pre-emphasize in non-chirp state for host port */
ret = regmap_write(rphy->grf, 0x30, 0x00070004);
if (ret)
return ret;
/* Turn off differential receiver in suspend mode */
ret = regmap_write(rphy->grf, 0x18, 0x00040000);
if (ret)
return ret;
}
return 0;
}