diff options
Diffstat (limited to 'drivers/usb/host/xhci-rcar.c')
-rw-r--r-- | drivers/usb/host/xhci-rcar.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index 2b0ccd150209..4353c1948e5c 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -74,7 +74,6 @@ MODULE_FIRMWARE(XHCI_RCAR_FIRMWARE_NAME_V3); /* For soc_device_attribute */ #define RCAR_XHCI_FIRMWARE_V2 BIT(0) /* FIRMWARE V2 */ -#define RCAR_XHCI_FIRMWARE_V3 BIT(1) /* FIRMWARE V3 */ static const struct soc_device_attribute rcar_quirks_match[] = { { @@ -143,14 +142,19 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd) const struct soc_device_attribute *attr; const char *firmware_name; + /* + * According to the datasheet, "Upon the completion of FW Download, + * there is no need to write or reload FW". + */ + if (readl(regs + RCAR_USB3_DL_CTRL) & RCAR_USB3_DL_CTRL_FW_SUCCESS) + return 0; + attr = soc_device_match(rcar_quirks_match); if (attr) quirks = (uintptr_t)attr->data; if (quirks & RCAR_XHCI_FIRMWARE_V2) firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2; - else if (quirks & RCAR_XHCI_FIRMWARE_V3) - firmware_name = XHCI_RCAR_FIRMWARE_NAME_V3; else firmware_name = priv->firmware_name; |