diff options
| author | Xu Ziyuan <xzy.xu@rock-chips.com> | 2016-07-14 14:52:33 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2016-07-25 20:44:19 -0600 |
| commit | 47117882671fbfb5ffa20cd25ec29da5b7143009 (patch) | |
| tree | af154f368604db8b587b20722e356e80d9d5b2ad /drivers | |
| parent | fab3357916096d4c61a5e2fe5d28f5aeb78c6957 (diff) | |
usb: dwc2-otg: adjust fifo size via platform data
The total FIFO size of some SoCs may be different from the existen, this
patch supports fifo size setting from platform data.
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/dwc2_udc_otg.c | 22 | ||||
| -rw-r--r-- | drivers/usb/gadget/dwc2_udc_otg_regs.h | 6 |
2 files changed, 19 insertions, 9 deletions
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index a23278d957..029927f8ac 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -403,6 +403,7 @@ static void reconfig_usbd(struct dwc2_udc *dev) int i; unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl); uint32_t dflt_gusbcfg; + uint32_t rx_fifo_sz, tx_fifo_sz, np_tx_fifo_sz; debug("Reseting OTG controller\n"); @@ -467,18 +468,27 @@ static void reconfig_usbd(struct dwc2_udc *dev) /* 10. Unmask device IN EP common interrupts*/ writel(DIEPMSK_INIT, ®->diepmsk); + rx_fifo_sz = RX_FIFO_SIZE; + np_tx_fifo_sz = NPTX_FIFO_SIZE; + tx_fifo_sz = PTX_FIFO_SIZE; + + if (dev->pdata->rx_fifo_sz) + rx_fifo_sz = dev->pdata->rx_fifo_sz; + if (dev->pdata->np_tx_fifo_sz) + np_tx_fifo_sz = dev->pdata->np_tx_fifo_sz; + if (dev->pdata->tx_fifo_sz) + tx_fifo_sz = dev->pdata->tx_fifo_sz; + /* 11. Set Rx FIFO Size (in 32-bit words) */ - writel(RX_FIFO_SIZE >> 2, ®->grxfsiz); + writel(rx_fifo_sz, ®->grxfsiz); /* 12. Set Non Periodic Tx FIFO Size */ - writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0, + writel((np_tx_fifo_sz << 16) | rx_fifo_sz, ®->gnptxfsiz); for (i = 1; i < DWC2_MAX_HW_ENDPOINTS; i++) - writel((PTX_FIFO_SIZE >> 2) << 16 | - ((RX_FIFO_SIZE + NPTX_FIFO_SIZE + - PTX_FIFO_SIZE*(i-1)) >> 2) << 0, - ®->dieptxf[i-1]); + writel((rx_fifo_sz + np_tx_fifo_sz + tx_fifo_sz*(i-1)) | + tx_fifo_sz << 16, ®->dieptxf[i-1]); /* Flush the RX FIFO */ writel(RX_FIFO_FLUSH, ®->grstctl); diff --git a/drivers/usb/gadget/dwc2_udc_otg_regs.h b/drivers/usb/gadget/dwc2_udc_otg_regs.h index 78ec90ea9f..c94396afc0 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_regs.h +++ b/drivers/usb/gadget/dwc2_udc_otg_regs.h @@ -130,9 +130,9 @@ struct dwc2_usbotg_reg { #define HIGH_SPEED_CONTROL_PKT_SIZE 64 #define HIGH_SPEED_BULK_PKT_SIZE 512 -#define RX_FIFO_SIZE (1024*4) -#define NPTX_FIFO_SIZE (1024*4) -#define PTX_FIFO_SIZE (1536*1) +#define RX_FIFO_SIZE (1024) +#define NPTX_FIFO_SIZE (1024) +#define PTX_FIFO_SIZE (384) #define DEPCTL_TXFNUM_0 (0x0<<22) #define DEPCTL_TXFNUM_1 (0x1<<22) |