This patch adds disable usb3 suspend phy quirk, and some special platforms
can configure that if it is needed.
Signed-off-by: Huang Rui <ray.huang@xxxxxxx>
---
Documentation/devicetree/bindings/usb/dwc3.txt | 1 +
drivers/usb/dwc3/core.c | 7 +++++++
drivers/usb/dwc3/core.h | 2 ++
drivers/usb/dwc3/platform_data.h | 1 +
4 files changed, 11 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index a9e54ae..3720fca 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -32,6 +32,7 @@ Optional properties:
- snps,tx_de_emphasis_quirk: when set core will set Tx de-emphasis value.
- snps,tx_de_emphasis: the value driven to the PHY is controlled by the
LTSSM during USB3 Compliance mode.
+ - snps,dis_u3_susphy_quirk: when set core will disable USB3 suspend phy.
This is usually a subnode to DWC3 glue to which it is connected.
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index b55fa5b..fdc715a 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -404,6 +404,10 @@ static void dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->tx_de_emphasis_quirk)
reg |= DWC3_GUSB3PIPECTL_TX_DEEPH(dwc->tx_de_emphasis);
+ /* FIXME will move FPGA flag when AMD NL taps out */
+ if (dwc->dis_u3_susphy_quirk && dwc->is_fpga)
+ reg &= ~DWC3_GUSB3PIPECTL_SUSPHY;
+
dwc3_writel(dwc->regs, DWC3_GUSB3PIPECTL(0), reg);
mdelay(100);
@@ -809,6 +813,8 @@ static int dwc3_probe(struct platform_device *pdev)
"snps,lfps_filter_quirk");
dwc->rx_detect_poll_quirk = of_property_read_bool(node,
"snps,rx_detect_poll_quirk");
+ dwc->dis_u3_susphy_quirk = of_property_read_bool(node,
+ "snps,dis_u3_susphy_quirk");
dwc->tx_de_emphasis_quirk = of_property_read_bool(node,
"snps,tx_de_emphasis_quirk");
@@ -831,6 +837,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->del_phy_power_chg_quirk = pdata->del_phy_power_chg_quirk;
dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
+ dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
if (pdata->tx_de_emphasis)
diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 469ee13..be793f7 100644
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -697,6 +697,7 @@ struct dwc3_scratchpad_array {
* @del_phy_power_chg_quirk: set if we enable delay phy power change quirk
* @lfps_filter_quirk: set if we enable LFPS filter quirk
* @rx_detect_poll_quirk: set if we enable rx_detect to polling LFPS quirk
+ * @dis_u3_susphy_quirk: set if we disable usb3 suspend phy
* @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
* @tx_de_emphasis: Tx de-emphasis value
* 0 - -6dB de-emphasis
@@ -818,6 +819,7 @@ struct dwc3 {
unsigned del_phy_power_chg_quirk:1;
unsigned lfps_filter_quirk:1;
unsigned rx_detect_poll_quirk:1;
+ unsigned dis_u3_susphy_quirk:1;
unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2;
diff --git a/drivers/usb/dwc3/platform_data.h b/drivers/usb/dwc3/platform_data.h
index e1ab900..0f1d5ad 100644
--- a/drivers/usb/dwc3/platform_data.h
+++ b/drivers/usb/dwc3/platform_data.h
@@ -36,6 +36,7 @@ struct dwc3_platform_data {
unsigned del_phy_power_chg_quirk:1;
unsigned lfps_filter_quirk:1;
unsigned rx_detect_poll_quirk:1;
+ unsigned dis_u3_susphy_quirk:1;
unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2;
--
1.9.1
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