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usb: phy: mxs: add wakeup enable for imx7ulp

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This wakeup setting can enable USB wakeup function even the
controller's power is lost, and both A7 and M4 are in VLLS mode.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20240726113207.3393247-4-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2024-07-26 19:32:05 +08:00 committed by Greg Kroah-Hartman
parent 82c7a8166c
commit c99b27ef83
1 changed files with 39 additions and 2 deletions
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41
drivers/usb/phy/phy-mxs-usb.c
View File

@ -118,6 +118,11 @@
#define BM_ANADIG_USB2_MISC_RX_VPIN_FS BIT(29)
#define BM_ANADIG_USB2_MISC_RX_VMIN_FS BIT(28)
/* System Integration Module (SIM) Registers */
#define SIM_GPR1 0x30
#define USB_PHY_VLLS_WAKEUP_EN BIT(0)
#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
/* Do disconnection between PHY and controller without vbus */
@ -214,6 +219,7 @@ struct mxs_phy {
struct clk *clk;
const struct mxs_phy_data *data;
struct regmap *regmap_anatop;
struct regmap *regmap_sim;
int port_id;
u32 tx_reg_set;
u32 tx_reg_mask;
@ -772,6 +778,17 @@ static int mxs_phy_probe(struct platform_device *pdev)
}
}
/* Currently, only imx7ulp has SIM module */
if (of_get_property(np, "nxp,sim", NULL)) {
mxs_phy->regmap_sim = syscon_regmap_lookup_by_phandle
(np, "nxp,sim");
if (IS_ERR(mxs_phy->regmap_sim)) {
dev_dbg(&pdev->dev,
"failed to find regmap for sim\n");
return PTR_ERR(mxs_phy->regmap_sim);
}
}
/* Precompute which bits of the TX register are to be updated, if any */
if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) &&
val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
@ -849,6 +866,22 @@ static void mxs_phy_remove(struct platform_device *pdev)
}
#ifdef CONFIG_PM_SLEEP
static void mxs_phy_wakeup_enable(struct mxs_phy *mxs_phy, bool on)
{
u32 mask = USB_PHY_VLLS_WAKEUP_EN;
/* If the SoCs don't have SIM, quit */
if (!mxs_phy->regmap_sim)
return;
if (on) {
regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, mask);
udelay(500);
} else {
regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, 0);
}
}
static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
{
unsigned int reg = on ? ANADIG_ANA_MISC0_SET : ANADIG_ANA_MISC0_CLR;
@ -869,8 +902,10 @@ static int mxs_phy_system_suspend(struct device *dev)
{
struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
if (device_may_wakeup(dev)) {
mxs_phy_enable_ldo_in_suspend(mxs_phy, true);
mxs_phy_wakeup_enable(mxs_phy, true);
}
return 0;
}
@ -879,8 +914,10 @@ static int mxs_phy_system_resume(struct device *dev)
{
struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
if (device_may_wakeup(dev))
if (device_may_wakeup(dev)) {
mxs_phy_enable_ldo_in_suspend(mxs_phy, false);
mxs_phy_wakeup_enable(mxs_phy, false);
}
return 0;
}