Add a quirk to clear the GUSB2PHYCFG.ENBLSLPM bit, which controls whether the PHY receives the suspend signal from the controller.
Refer to commit ec791d149bca("usb: dwc3: Add dis_enblslpm_quirk") in Linux Kernel.
Signed-off-by: Frank Wang frank.wang@rock-chips.com Reviewed-by: Kever Yang kever.yang@rock-chips.com Reviewed-by: Jagan Teki jagan@amarulasolutions.com Tested-by: Jagan Teki jagan@amarulasolutions.com --- drivers/usb/dwc3/core.c | 6 ++++++ drivers/usb/dwc3/core.h | 2 ++ include/dwc3-uboot.h | 1 + 3 files changed, 9 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 0972e458eb..20be617fd4 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -398,6 +398,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc) if (dwc->dis_u2_susphy_quirk) reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
+ if (dwc->dis_enblslpm_quirk) + reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM; + dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
mdelay(100); @@ -719,6 +722,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev) dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk; dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk; dwc->dis_del_phy_power_chg_quirk = dwc3_dev->dis_del_phy_power_chg_quirk; + dwc->dis_enblslpm_quirk = dwc3_dev->dis_enblslpm_quirk;
dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk; if (dwc3_dev->tx_de_emphasis) @@ -926,6 +930,8 @@ void dwc3_of_parse(struct dwc3 *dwc) "snps,dis_u2_susphy_quirk"); dwc->dis_del_phy_power_chg_quirk = dev_read_bool(dev, "snps,dis-del-phy-power-chg-quirk"); + dwc->dis_enblslpm_quirk = dev_read_bool(dev, + "snps,dis_enblslpm_quirk"); dwc->tx_de_emphasis_quirk = dev_read_bool(dev, "snps,tx_de_emphasis_quirk"); tmp = dev_read_u8_array_ptr(dev, "snps,tx_de_emphasis", 1); diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 7f45a9c459..e76e357f1e 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -162,6 +162,7 @@ /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) +#define DWC3_GUSB2PHYCFG_ENBLSLPM (1 << 8) #define DWC3_GUSB2PHYCFG_PHYIF(n) ((n) << 3) #define DWC3_GUSB2PHYCFG_PHYIF_MASK DWC3_GUSB2PHYCFG_PHYIF(1) #define DWC3_GUSB2PHYCFG_USBTRDTIM(n) ((n) << 10) @@ -822,6 +823,7 @@ struct dwc3 { unsigned dis_u3_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1; unsigned dis_del_phy_power_chg_quirk:1; + unsigned dis_enblslpm_quirk:1;
unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis:2; diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h index ecae34bf06..98d51e05e1 100644 --- a/include/dwc3-uboot.h +++ b/include/dwc3-uboot.h @@ -34,6 +34,7 @@ struct dwc3_device { unsigned dis_u3_susphy_quirk; unsigned dis_u2_susphy_quirk; unsigned dis_del_phy_power_chg_quirk; + unsigned dis_enblslpm_quirk; unsigned tx_de_emphasis_quirk; unsigned tx_de_emphasis; int index;