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usb: dwc3: Add dis_enblslpm_quirk

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Add a quirk to clear the GUSB2PHYCFG.ENBLSLPM bit, which controls
whether the PHY receives the suspend signal from the controller.

Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
John Youn
2015-10-02 20:30:57 -07:00
committed by Felipe Balbi
parent bb7f3d6d32
commit ec791d149b
4 changed files with 13 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Documentation/devicetree/bindings/usb/dwc3.txt
+2
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@@ -35,6 +35,8 @@ Optional properties:
LTSSM during USB3 Compliance mode. LTSSM during USB3 Compliance mode.
- snps,dis_u3_susphy_quirk: when set core will disable USB3 suspend phy. - 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. - snps,dis_u2_susphy_quirk: when set core will disable USB2 suspend phy.
- snps,dis_enblslpm_quirk: when set clears the enblslpm in GUSB2PHYCFG,
disabling the suspend signal to the PHY.
- snps,is-utmi-l1-suspend: true when DWC3 asserts output signal - snps,is-utmi-l1-suspend: true when DWC3 asserts output signal
utmi_l1_suspend_n, false when asserts utmi_sleep_n utmi_l1_suspend_n, false when asserts utmi_sleep_n
- snps,hird-threshold: HIRD threshold - snps,hird-threshold: HIRD threshold
drivers/usb/dwc3/core.c
+6
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@@ -515,6 +515,9 @@ static int dwc3_phy_setup(struct dwc3 *dwc)
if (dwc->dis_u2_susphy_quirk) if (dwc->dis_u2_susphy_quirk)
reg &= ~DWC3_GUSB2PHYCFG_SUSPHY; reg &= ~DWC3_GUSB2PHYCFG_SUSPHY;
if (dwc->dis_enblslpm_quirk)
reg &= ~DWC3_GUSB2PHYCFG_ENBLSLPM;
dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg); dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(0), reg);
return 0; return 0;
@@ -912,6 +915,8 @@ static int dwc3_probe(struct platform_device *pdev)
"snps,dis_u3_susphy_quirk"); "snps,dis_u3_susphy_quirk");
dwc->dis_u2_susphy_quirk = device_property_read_bool(dev, dwc->dis_u2_susphy_quirk = device_property_read_bool(dev,
"snps,dis_u2_susphy_quirk"); "snps,dis_u2_susphy_quirk");
dwc->dis_enblslpm_quirk = device_property_read_bool(dev,
"snps,dis_enblslpm_quirk");
dwc->tx_de_emphasis_quirk = device_property_read_bool(dev, dwc->tx_de_emphasis_quirk = device_property_read_bool(dev,
"snps,tx_de_emphasis_quirk"); "snps,tx_de_emphasis_quirk");
@@ -945,6 +950,7 @@ static int dwc3_probe(struct platform_device *pdev)
dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk; dwc->rx_detect_poll_quirk = pdata->rx_detect_poll_quirk;
dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk; dwc->dis_u3_susphy_quirk = pdata->dis_u3_susphy_quirk;
dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk; dwc->dis_u2_susphy_quirk = pdata->dis_u2_susphy_quirk;
dwc->dis_enblslpm_quirk = pdata->dis_enblslpm_quirk;
dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk; dwc->tx_de_emphasis_quirk = pdata->tx_de_emphasis_quirk;
if (pdata->tx_de_emphasis) if (pdata->tx_de_emphasis)
drivers/usb/dwc3/core.h
+4
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@@ -179,6 +179,7 @@
#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) #define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
#define DWC3_GUSB2PHYCFG_ULPI_UTMI (1 << 4) #define DWC3_GUSB2PHYCFG_ULPI_UTMI (1 << 4)
#define DWC3_GUSB2PHYCFG_ENBLSLPM (1 << 8)
/* Global USB2 PHY Vendor Control Register */ /* Global USB2 PHY Vendor Control Register */
#define DWC3_GUSB2PHYACC_NEWREGREQ (1 << 25) #define DWC3_GUSB2PHYACC_NEWREGREQ (1 << 25)
@@ -720,6 +721,8 @@ struct dwc3_scratchpad_array {
* @rx_detect_poll_quirk: set if we enable rx_detect to polling lfps 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_u3_susphy_quirk: set if we disable usb3 suspend phy
* @dis_u2_susphy_quirk: set if we disable usb2 suspend phy * @dis_u2_susphy_quirk: set if we disable usb2 suspend phy
* @dis_enblslpm_quirk: set if we clear enblslpm in GUSB2PHYCFG,
* disabling the suspend signal to the PHY.
* @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk * @tx_de_emphasis_quirk: set if we enable Tx de-emphasis quirk
* @tx_de_emphasis: Tx de-emphasis value * @tx_de_emphasis: Tx de-emphasis value
* 0 - -6dB de-emphasis * 0 - -6dB de-emphasis
@@ -864,6 +867,7 @@ struct dwc3 {
unsigned rx_detect_poll_quirk:1; unsigned rx_detect_poll_quirk:1;
unsigned dis_u3_susphy_quirk:1; unsigned dis_u3_susphy_quirk:1;
unsigned dis_u2_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1;
unsigned dis_enblslpm_quirk:1;
unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2; unsigned tx_de_emphasis:2;
drivers/usb/dwc3/platform_data.h
+1
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@@ -42,6 +42,7 @@ struct dwc3_platform_data {
unsigned rx_detect_poll_quirk:1; unsigned rx_detect_poll_quirk:1;
unsigned dis_u3_susphy_quirk:1; unsigned dis_u3_susphy_quirk:1;
unsigned dis_u2_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1;
unsigned dis_enblslpm_quirk:1;
unsigned tx_de_emphasis_quirk:1; unsigned tx_de_emphasis_quirk:1;
unsigned tx_de_emphasis:2; unsigned tx_de_emphasis:2;