Add a quirk to clear the GUSB2PHYCFG.U2_FREECLK_EXISTS bit, which specifies whether the USB2.0 PHY provides a free-running PHY clock, which is active when the clock control input is active.
Refer to commit 27f83eeb6b42("usb: dwc3: add dis_u2_freeclk_exists_quirk") in Linux Rockchip Kernel.
Signed-off-by: Frank Wang frank.wang@rock-chips.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 a80e7d54aa..3c81a07dad 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_enblslpm_quirk) reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
+ if (dwc->dis_u2_freeclk_exists_quirk) + reg &= ~DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS; + 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_enblslpm_quirk = dwc3_dev->dis_enblslpm_quirk; + dwc->dis_u2_freeclk_exists_quirk = dwc3_dev->dis_u2_freeclk_exists_quirk;
dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk; if (dwc3_dev->tx_de_emphasis) @@ -981,6 +985,8 @@ void dwc3_of_parse(struct dwc3 *dwc) "snps,dis_u2_susphy_quirk"); dwc->dis_enblslpm_quirk = dev_read_bool(dev, "snps,dis_enblslpm_quirk"); + dwc->dis_u2_freeclk_exists_quirk = dev_read_bool(dev, + "snps,dis-u2-freeclk-exists-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 eabbc30f25..86a697d1bd 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -161,6 +161,7 @@
/* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) +#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS (1 << 30) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) #define DWC3_GUSB2PHYCFG_PHYIF(n) ((n) << 3) #define DWC3_GUSB2PHYCFG_PHYIF_MASK DWC3_GUSB2PHYCFG_PHYIF(1) @@ -822,6 +823,7 @@ struct dwc3 { unsigned dis_u3_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1; unsigned dis_enblslpm_quirk:1; + unsigned dis_u2_freeclk_exists_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 fd3f173c37..952ad64c35 100644 --- a/include/dwc3-uboot.h +++ b/include/dwc3-uboot.h @@ -33,6 +33,7 @@ struct dwc3_device { unsigned dis_u3_susphy_quirk; unsigned dis_u2_susphy_quirk; unsigned dis_enblslpm_quirk; + unsigned dis_u2_freeclk_exists_quirk; unsigned tx_de_emphasis_quirk; unsigned tx_de_emphasis; int index;