diff options
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/params.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 6729f14d25de..4416eae09647 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -343,6 +343,40 @@ static void dwc2_set_default_params(struct dwc2_hsotg *hsotg) } } +/** + * dwc2_get_device_properties() - Read in device properties. + * + * Read in the device properties and adjust core parameters if needed. + */ +static void dwc2_get_device_properties(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + int num; + + if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) || + (hsotg->dr_mode == USB_DR_MODE_OTG)) { + device_property_read_u32(hsotg->dev, "g-rx-fifo-size", + &p->g_rx_fifo_size); + + device_property_read_u32(hsotg->dev, "g-np-tx-fifo-size", + &p->g_np_tx_fifo_size); + + num = device_property_read_u32_array(hsotg->dev, + "g-tx-fifo-size", + NULL, 0); + + if (num > 0) { + num = min(num, 15); + memset(p->g_tx_fifo_size, 0, + sizeof(p->g_tx_fifo_size)); + device_property_read_u32_array(hsotg->dev, + "g-tx-fifo-size", + &p->g_tx_fifo_size[1], + num); + } + } +} + /* * Gets host hardware parameters. Forces host mode if not currently in * host mode. Should be called immediately after a core soft reset in @@ -555,6 +589,7 @@ int dwc2_get_hwparams(struct dwc2_hsotg *hsotg) int dwc2_init_params(struct dwc2_hsotg *hsotg) { dwc2_set_default_params(hsotg); + dwc2_get_device_properties(hsotg); return 0; } |