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phy: fsl-imx8mq-usb: add i.MX95 tuning support

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The i.MX8MP and i.MX95 USB3 PHY have different tuning parameter for same
tuning field, this will add i.MX95 tuning support.

Reviewed-by: Jun Li <jun.li@nxp.com>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20250430094502.2723983-4-xu.yang_2@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Xu Yang 2025-04-30 17:45:02 +08:00 committed by Vinod Koul
parent b15ee09ddb
commit e75d564f64
1 changed files with 74 additions and 0 deletions
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74
drivers/phy/freescale/phy-fsl-imx8mq-usb.c
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@ -293,6 +293,28 @@ static u32 phy_tx_vref_tune_from_property(u32 percent)
return DIV_ROUND_CLOSEST(percent - 94U, 2);
}
static u32 imx95_phy_tx_vref_tune_from_property(u32 percent)
{
percent = clamp(percent, 90U, 108U);
switch (percent) {
case 90 ... 91:
percent = 0;
break;
case 92 ... 96:
percent -= 91;
break;
case 97 ... 104:
percent -= 92;
break;
case 105 ... 108:
percent -= 93;
break;
}
return percent;
}
static u32 phy_tx_rise_tune_from_property(u32 percent)
{
switch (percent) {
@ -307,6 +329,22 @@ static u32 phy_tx_rise_tune_from_property(u32 percent)
}
}
static u32 imx95_phy_tx_rise_tune_from_property(u32 percent)
{
percent = clamp(percent, 90U, 120U);
switch (percent) {
case 90 ... 99:
return 3;
case 101 ... 115:
return 1;
case 116 ... 120:
return 0;
default:
return 2;
}
}
static u32 phy_tx_preemp_amp_tune_from_property(u32 microamp)
{
microamp = min(microamp, 1800U);
@ -352,6 +390,29 @@ static u32 phy_comp_dis_tune_from_property(u32 percent)
return 7;
}
}
static u32 imx95_phy_comp_dis_tune_from_property(u32 percent)
{
percent = clamp(percent, 94, 104);
switch (percent) {
case 94 ... 95:
percent = 0;
break;
case 96 ... 98:
percent -= 95;
break;
case 99 ... 102:
percent -= 96;
break;
case 103 ... 104:
percent -= 97;
break;
}
return percent;
}
static u32 phy_pcs_tx_swing_full_from_property(u32 percent)
{
percent = min(percent, 100U);
@ -362,10 +423,17 @@ static u32 phy_pcs_tx_swing_full_from_property(u32 percent)
static void imx8m_get_phy_tuning_data(struct imx8mq_usb_phy *imx_phy)
{
struct device *dev = imx_phy->phy->dev.parent;
bool is_imx95 = false;
if (device_is_compatible(dev, "fsl,imx95-usb-phy"))
is_imx95 = true;
if (device_property_read_u32(dev, "fsl,phy-tx-vref-tune-percent",
&imx_phy->tx_vref_tune))
imx_phy->tx_vref_tune = PHY_TUNE_DEFAULT;
else if (is_imx95)
imx_phy->tx_vref_tune =
imx95_phy_tx_vref_tune_from_property(imx_phy->tx_vref_tune);
else
imx_phy->tx_vref_tune =
phy_tx_vref_tune_from_property(imx_phy->tx_vref_tune);
@ -373,6 +441,9 @@ static void imx8m_get_phy_tuning_data(struct imx8mq_usb_phy *imx_phy)
if (device_property_read_u32(dev, "fsl,phy-tx-rise-tune-percent",
&imx_phy->tx_rise_tune))
imx_phy->tx_rise_tune = PHY_TUNE_DEFAULT;
else if (is_imx95)
imx_phy->tx_rise_tune =
imx95_phy_tx_rise_tune_from_property(imx_phy->tx_rise_tune);
else
imx_phy->tx_rise_tune =
phy_tx_rise_tune_from_property(imx_phy->tx_rise_tune);
@ -394,6 +465,9 @@ static void imx8m_get_phy_tuning_data(struct imx8mq_usb_phy *imx_phy)
if (device_property_read_u32(dev, "fsl,phy-comp-dis-tune-percent",
&imx_phy->comp_dis_tune))
imx_phy->comp_dis_tune = PHY_TUNE_DEFAULT;
else if (is_imx95)
imx_phy->comp_dis_tune =
imx95_phy_comp_dis_tune_from_property(imx_phy->comp_dis_tune);
else
imx_phy->comp_dis_tune =
phy_comp_dis_tune_from_property(imx_phy->comp_dis_tune);