@@ -119,6 +119,13 @@ static const struct property_entry dwc3_pci_intel_properties[] = {
{}
};
+static const struct property_entry dwc3_pci_intel_byt_properties[] = {
+ PROPERTY_ENTRY_STRING("dr_mode", "peripheral"),
+ PROPERTY_ENTRY_BOOL("snps,dis_u2_susphy_quirk"),
+ PROPERTY_ENTRY_BOOL("linux,sysdev_is_parent"),
+ {}
+};
+
static const struct property_entry dwc3_pci_mrfld_properties[] = {
PROPERTY_ENTRY_STRING("dr_mode", "otg"),
PROPERTY_ENTRY_STRING("linux,extcon-name", "mrfld_bcove_pwrsrc"),
@@ -161,6 +168,10 @@ static const struct software_node dwc3_pci_intel_swnode = {
.properties = dwc3_pci_intel_properties,
};
+static const struct software_node dwc3_pci_intel_byt_swnode = {
+ .properties = dwc3_pci_intel_byt_properties,
+};
+
static const struct software_node dwc3_pci_intel_mrfld_swnode = {
.properties = dwc3_pci_mrfld_properties,
};
@@ -344,7 +355,7 @@ static const struct pci_device_id dwc3_pci_id_table[] = {
(kernel_ulong_t) &dwc3_pci_intel_swnode, },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_BYT),
- (kernel_ulong_t) &dwc3_pci_intel_swnode, },
+ (kernel_ulong_t) &dwc3_pci_intel_byt_swnode, },
{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_INTEL_MRFLD),
(kernel_ulong_t) &dwc3_pci_intel_mrfld_swnode, },
Commit e0082698b689 ("usb: dwc3: ulpi: conditionally resume ULPI PHY") fixed an issue where ULPI transfers would timeout if any requests where send to the phy sometime after init, giving it enough time to auto-suspend. Commit e5f4ca3fce90 ("usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression") changed the behavior to instead of clearing the DWC3_GUSB2PHYCFG_SUSPHY bit, add an extra sleep when it is set. But on Bay Trail devices, when phy_set_mode() gets called during init, this leads to errors like these: [ 28.451522] tusb1210 dwc3.ulpi: error -110 writing val 0x01 to reg 0x0a [ 28.464089] tusb1210 dwc3.ulpi: error -110 writing val 0x01 to reg 0x0a Add "snps,dis_u2_susphy_quirk" to the settings for Bay Trail devices to fix this. This restores the old behavior for Bay Trail devices, since previously the DWC3_GUSB2PHYCFG_SUSPHY bit would get cleared on the first ulpi_read/_write() and then was never set again. Fixes: e5f4ca3fce90 ("usb: dwc3: ulpi: Fix USB2.0 HS/FS/LS PHY suspend regression") Cc: Serge Semin <Sergey.Semin@baikalelectronics.ru> Signed-off-by: Hans de Goede <hdegoede@redhat.com> --- drivers/usb/dwc3/dwc3-pci.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)