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usb: dwc3: add disable usb2 suspend phy quirk

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

Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Huang Rui 2014-10-31 11:11:14 +08:00 committed by Felipe Balbi
parent 59acfa2081
commit 0effe0a3e7
4 changed files with 10 additions and 0 deletions
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1
Documentation/devicetree/bindings/usb/dwc3.txt
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@ -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.

6
drivers/usb/dwc3/core.c
View File

@ -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)

2
drivers/usb/dwc3/core.h
View File

@ -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;

1
drivers/usb/dwc3/platform_data.h
View File

@ -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;