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usb: dwc3: add dis_del_phy_power_chg_quirk

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Add a quirk to clear the GUSB3PIPECTL.DELAYP1TRANS bit,
which specifies whether disable delay PHY power change
from P0 to P1/P2/P3 when link state changing from U0
to U1/U2/U3 respectively.

Reference from below Linux commit,

commit <00fe081dc3a3> ("usb: dwc3: add dis_del_phy_power_chg_quirk")

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This commit is contained in:
Jagan Teki 2020-05-06 13:20:25 +05:30 • committed by Marek Vasut
parent 2a38d2239d
commit 73ca0140e1
3 changed files with 8 additions and 0 deletions
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6
drivers/usb/dwc3/core.c
View file

@ -377,6 +377,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->dis_u3_susphy_quirk)
reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
if (dwc->dis_del_phy_power_chg_quirk)
reg &= ~DWC3_GUSB3PIPECTL_DEPOCHANGE;
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
mdelay(100);
@ -715,6 +718,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev)
dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk;
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->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk;
if (dwc3_dev->tx_de_emphasis)
@ -920,6 +924,8 @@ void dwc3_of_parse(struct dwc3 *dwc)
"snps,dis_u3_susphy_quirk");
dwc->dis_u2_susphy_quirk = dev_read_bool(dev,
"snps,dis_u2_susphy_quirk");
dwc->dis_del_phy_power_chg_quirk = dev_read_bool(dev,
"snps,dis-del-phy-power-chg-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);

1
drivers/usb/dwc3/core.h
View file

@ -821,6 +821,7 @@ struct dwc3 {
unsigned rx_detect_poll_quirk:1;
unsigned dis_u3_susphy_quirk:1;
unsigned dis_u2_susphy_quirk:1;
unsigned dis_del_phy_power_chg_quirk:1;
unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2;

1
include/dwc3-uboot.h
View file

@ -33,6 +33,7 @@ struct dwc3_device {
unsigned rx_detect_poll_quirk;
unsigned dis_u3_susphy_quirk;
unsigned dis_u2_susphy_quirk;
unsigned dis_del_phy_power_chg_quirk;
unsigned tx_de_emphasis_quirk;
unsigned tx_de_emphasis;
int index;