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usb: dwc3: host: pass quirk-broken-port-ped property for known broken revisions

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[ Upstream commit e42a5dbb8a ]

dwc3 revisions <=3.00a have a limitation where Port Disable command
doesn't work. Set the quirk-broken-port-ped property for such
controllers so XHCI core can do the necessary workaround.

[rogerq@ti.com] Updated code from platform data to device property.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felipe Balbi
2017-04-04 19:32:25 +00:00
committed by Greg Kroah-Hartman
parent 7bdf7bebbb
commit ae3a3e209e
1 changed files with 18 additions and 3 deletions
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21
drivers/usb/dwc3/host.c
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@@ -21,11 +21,12 @@
int dwc3_host_init(struct dwc3 *dwc)
{
struct property_entry props[2];
struct property_entry props[3];
struct platform_device *xhci;
int ret, irq;
struct resource *res;
struct platform_device *dwc3_pdev = to_platform_device(dwc->dev);
int prop_idx = 0;
irq = platform_get_irq_byname(dwc3_pdev, "host");
if (irq == -EPROBE_DEFER)
@@ -89,8 +90,22 @@ int dwc3_host_init(struct dwc3 *dwc)
memset(props, 0, sizeof(struct property_entry) * ARRAY_SIZE(props));
if (dwc->usb3_lpm_capable) {
props[0].name = "usb3-lpm-capable";
if (dwc->usb3_lpm_capable)
props[prop_idx++].name = "usb3-lpm-capable";
/**
* WORKAROUND: dwc3 revisions <=3.00a have a limitation
* where Port Disable command doesn't work.
*
* The suggested workaround is that we avoid Port Disable
* completely.
*
* This following flag tells XHCI to do just that.
*/
if (dwc->revision <= DWC3_REVISION_300A)
props[prop_idx++].name = "quirk-broken-port-ped";
if (prop_idx) {
ret = platform_device_add_properties(xhci, props);
if (ret) {
dev_err(dwc->dev, "failed to add properties to xHCI\n");