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phy: rockchip-inno-usb2: add rk3328 tuning support

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Due to usb-phy tuning framework is not added in UPSTREAM codes, so
rk3328 tuning is striped in mainline, this commit make a supplement.

Change-Id: Id8103d65951515b9b21baab14f7125420cea78eb
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
This commit is contained in:
Frank Wang
2019-03-06 16:48:06 +08:00
committed by Tao Huang
parent f964e1bae5
commit ca9f99df15
1 changed files with 26 additions and 0 deletions
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26
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
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@@ -1873,6 +1873,31 @@ static int rk312x_usb2phy_tuning(struct rockchip_usb2phy *rphy)
return 0;
}
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;
/*
* Open HS pre-emphasize function to increase
* HS slew rate for host port
*/
ret = regmap_write(rphy->grf, 0x30, 0xffff851d);
if (ret)
return ret;
/* Turn off differential receiver in suspend mode */
ret = regmap_write(rphy->grf, 0x18, 0x00040000);
if (ret)
return ret;
return 0;
}
static int rk3366_usb2phy_tuning(struct rockchip_usb2phy *rphy)
{
unsigned int open_pre_emphasize = 0xffff851f;
@@ -2186,6 +2211,7 @@ static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = {
{
.reg = 0x100,
.num_ports = 2,
.phy_tuning = rk3328_usb2phy_tuning,
.clkout_ctl = { 0x108, 4, 4, 1, 0 },
.port_cfgs = {
[USB2PHY_PORT_OTG] = {