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@xxxxxxx>
Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
---
Changes for v2:
- new patch
drivers/usb/dwc3/core.c | 6 ++++++
drivers/usb/dwc3/core.h | 1 +
include/dwc3-uboot.h | 1 +
3 files changed, 8 insertions(+)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 4ec3f6df6a..6e438e5604 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -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)
@@ -975,6 +979,8 @@ 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);
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 1c08a2c5b6..7f45a9c459 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -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;
diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h
index 3c9e204cf0..f5086fb946 100644
--- a/include/dwc3-uboot.h
+++ b/include/dwc3-uboot.h
@@ -32,6 +32,7 @@ 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;
--
2.17.1
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