Hi Seung-Woo,
During using dwc2 usb gadget, if usb message size is too small, following cache misaligned warning is shown:
CACHE: Misaligned operation at range [bfdbcb00, bfdbcb04]
Align size of invalidating dcache before starting DMA to remove the warning.
Signed-off-by: Seung-Woo Kim sw0312.kim@samsung.com
drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c index 0d6d2fb..b6164af 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c +++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c @@ -111,7 +111,8 @@ static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req) ctrl = readl(®->out_endp[ep_num].doepctl);
invalidate_dcache_range((unsigned long) ep->dma_buf,
(unsigned long) ep->dma_buf + ep->len);
(unsigned long) ep->dma_buf +ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE));writel((unsigned int) ep->dma_buf, ®->out_endp[ep_num].doepdma); writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),
Reviewed-by: Łukasz Majewski lukma@denx.de