Commit 0effe0a3 authored by Huang Rui's avatar Huang Rui Committed by Felipe Balbi
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usb: dwc3: add disable usb2 suspend phy quirk 



This patch adds disable usb2 suspend phy quirk, and some special platforms
can configure that if it is needed.

Signed-off-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 59acfa20

Documentation/devicetree/bindings/usb/dwc3.txt

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ Optional properties: 
 - 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.

 - snps,dis_u2_susphy_quirk: when set core will disable USB2 suspend phy.



This is usually a subnode to DWC3 glue to which it is connected.

drivers/usb/dwc3/core.c

+6 −0
Original line number Diff line number Diff line
@@ -422,6 +422,9 @@ static void dwc3_phy_setup(struct dwc3 *dwc) 
	if (dwc->revision > DWC3_REVISION_194A)

		reg |= DWC3_GUSB2PHYCFG_SUSPHY;



	if (dwc->dis_u2_susphy_quirk && dwc->is_fpga)

		reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;



	dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);



	mdelay(100);
@@ -817,6 +820,8 @@ static int dwc3_probe(struct platform_device *pdev) 
				"snps,rx_detect_poll_quirk");

		dwc->dis_u3_susphy_quirk = of_property_read_bool(node,

				"snps,dis_u3_susphy_quirk");

		dwc->dis_u2_susphy_quirk = of_property_read_bool(node,

				"snps,dis_u2_susphy_quirk");



		dwc->tx_de_emphasis_quirk = of_property_read_bool(node,

				"snps,tx_de_emphasis_quirk");
@@ -840,6 +845,7 @@ static int dwc3_probe(struct platform_device *pdev) 
		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->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;



		dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;

		if (pdata->tx_de_emphasis)

drivers/usb/dwc3/core.h

+2 −0
Original line number Diff line number Diff line
@@ -698,6 +698,7 @@ struct dwc3_scratchpad_array { 
 * @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

 * @dis_u2_susphy_quirk: set if we disable usb2 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
@@ -820,6 +821,7 @@ struct dwc3 { 
	unsigned		lfps_filter_quirk:1;

	unsigned		rx_detect_poll_quirk:1;

	unsigned		dis_u3_susphy_quirk:1;

	unsigned		dis_u2_susphy_quirk:1;



	unsigned		tx_de_emphasis_quirk:1;

	unsigned		tx_de_emphasis:2;

drivers/usb/dwc3/platform_data.h

+1 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ struct dwc3_platform_data { 
	unsigned lfps_filter_quirk:1;

	unsigned rx_detect_poll_quirk:1;

	unsigned dis_u3_susphy_quirk:1;

	unsigned dis_u2_susphy_quirk:1;



	unsigned tx_de_emphasis_quirk:1;

	unsigned tx_de_emphasis:2;