diff options
| author | Frank Wang <frank.wang@rock-chips.com> | 2020-05-26 11:33:47 +0800 |
|---|---|---|
| committer | Kever Yang <kever.yang@rock-chips.com> | 2020-05-29 18:13:19 +0800 |
| commit | b34f8b5de0fea945c2683e9e64d941c121aa02ad (patch) | |
| tree | e90c101d982cf2355c259a16662bd6e2e7bdf62d /drivers/usb | |
| parent | 7bb62708397d93d92804749b4c4c8d796df418de (diff) | |
usb: dwc3: add dis_u2_freeclk_exists_quirk
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>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 8b75de02aa..83a0782adc 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -403,6 +403,9 @@ 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); @@ -725,6 +728,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev) 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->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) @@ -934,6 +938,8 @@ void dwc3_of_parse(struct dwc3 *dwc) "snps,dis-del-phy-power-chg-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 91d028b486..b00e485855 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_U2_FREECLK_EXISTS (1 << 30) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) #define DWC3_GUSB2PHYCFG_ENBLSLPM (1 << 8) #define DWC3_GUSB2PHYCFG_PHYIF(n) ((n) << 3) @@ -825,6 +826,7 @@ struct dwc3 { unsigned dis_u2_susphy_quirk:1; unsigned dis_del_phy_power_chg_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; |