diff options
Diffstat (limited to 'drivers/usb/host/xhci-rcar.h')
| -rw-r--r-- | drivers/usb/host/xhci-rcar.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-rcar.h b/drivers/usb/host/xhci-rcar.h index 804b6ab4246f..012744a63a49 100644 --- a/drivers/usb/host/xhci-rcar.h +++ b/drivers/usb/host/xhci-rcar.h @@ -31,4 +31,25 @@ static inline int xhci_rcar_resume_quirk(struct usb_hcd *hcd) return 0; } #endif + +/* + * On R-Car Gen2 and Gen3, the AC64 bit (bit 0) of HCCPARAMS1 is set + * to 1. However, these SoCs don't support 64-bit address memory + * pointers. So, this driver clears the AC64 bit of xhci->hcc_params + * to call dma_set_coherent_mask(dev, DMA_BIT_MASK(32)) in + * xhci_gen_setup() by using the XHCI_NO_64BIT_SUPPORT quirk. + * + * And, since the firmware/internal CPU control the USBSTS.STS_HALT + * and the process speed is down when the roothub port enters U3, + * long delay for the handshake of STS_HALT is neeed in xhci_suspend() + * by using the XHCI_SLOW_SUSPEND quirk. + */ +#define SET_XHCI_PLAT_PRIV_FOR_RCAR(firmware) \ + .firmware_name = firmware, \ + .quirks = XHCI_NO_64BIT_SUPPORT | XHCI_TRUST_TX_LENGTH | \ + XHCI_SLOW_SUSPEND, \ + .init_quirk = xhci_rcar_init_quirk, \ + .plat_start = xhci_rcar_start, \ + .resume_quirk = xhci_rcar_resume_quirk, + #endif /* _XHCI_RCAR_H */ |