@@ -1303,6 +1303,8 @@ static void dwc3_get_properties(struct dwc3 *dwc)
"snps,usb3_lpm_capable");
dwc->usb2_lpm_disable = device_property_read_bool(dev,
"snps,usb2-lpm-disable");
+ dwc->sgl_trb_cache_size_quirk = device_property_read_bool(dev,
+ "snps,sgl-trb-cache-size-quirk");
device_property_read_u8(dev, "snps,rx-thr-num-pkt-prd",
&rx_thr_num_pkt_prd);
device_property_read_u8(dev, "snps,rx-max-burst-prd",
@@ -1007,6 +1007,7 @@ struct dwc3_scratchpad_array {
* not needed for DWC_usb31 version 1.70a-ea06 and below
* @usb3_lpm_capable: set if hadrware supports Link Power Management
* @usb2_lpm_disable: set to disable usb2 lpm
+ * @sgl_trb_cache_size_quirk: set to enable the SG list consolidation
* @disable_scramble_quirk: set if we enable the disable scramble quirk
* @u2exit_lfps_quirk: set if we enable u2exit lfps quirk
* @u2ss_inp3_quirk: set if we enable P3 OK for U2/SS Inactive quirk
@@ -1206,6 +1207,7 @@ struct dwc3 {
unsigned dis_start_transfer_quirk:1;
unsigned usb3_lpm_capable:1;
unsigned usb2_lpm_disable:1;
+ unsigned sgl_trb_cache_size_quirk:1;
unsigned disable_scramble_quirk:1;
unsigned u2exit_lfps_quirk:1;
@@ -29,6 +29,7 @@ static const struct property_entry initial_properties[] = {
PROPERTY_ENTRY_BOOL("snps,usb3_lpm_capable"),
PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
PROPERTY_ENTRY_BOOL("snps,dis_enblslpm_quirk"),
+ PROPERTY_ENTRY_BOOL("snps,sgl-trb-cache-size-quirk"),
PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
{ },
};
@@ -44,7 +44,7 @@ static int dwc3_host_get_irq(struct dwc3 *dwc)
int dwc3_host_init(struct dwc3 *dwc)
{
- struct property_entry props[4];
+ struct property_entry props[5];
struct platform_device *xhci;
int ret, irq;
struct resource *res;
@@ -95,6 +95,10 @@ int dwc3_host_init(struct dwc3 *dwc)
if (dwc->usb2_lpm_disable)
props[prop_idx++] = PROPERTY_ENTRY_BOOL("usb2-lpm-disable");
+ if (dwc->sgl_trb_cache_size_quirk)
+ props[prop_idx++] =
+ PROPERTY_ENTRY_BOOL("sgl-trb-cache-size-quirk");
+
/**
* WORKAROUND: dwc3 revisions <=3.00a have a limitation
* where Port Disable command doesn't work.
This commit adds the sgl-trb-cache-size-quirk property to enable quirk for the XHCI driver with Synopsys xHC. This property is enabled as initial property for the dwc3-haps driver. Signed-off-by: Tejas Joglekar <joglekar@synopsys.com> --- Changes in v2: - Renamed the property drivers/usb/dwc3/core.c | 2 ++ drivers/usb/dwc3/core.h | 2 ++ drivers/usb/dwc3/dwc3-haps.c | 1 + drivers/usb/dwc3/host.c | 6 +++++- 4 files changed, 10 insertions(+), 1 deletion(-)