On 1/7/19 3:45 AM, Ye Li wrote:
> After updating the value of dev_context_ptrs[0], we should flush this
> from cache to memory. Otherwise the xhci controller won't use it.
>
> Signed-off-by: Ye Li <ye...@nxp.com>
> Reviewed-by: Marek Vasut <ma...@denx.de>
Looks good to me, waiting for A-B/R-B from Bin.
> ---
> Changes for v2:
> - Change to use sizeof(ctrl->dcbaa->dev_context_ptrs[0])
>
> drivers/usb/host/xhci-mem.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
> index 04ab540..84c2c33 100644
> --- a/drivers/usb/host/xhci-mem.c
> +++ b/drivers/usb/host/xhci-mem.c
> @@ -369,6 +369,9 @@ static int xhci_scratchpad_alloc(struct xhci_ctrl *ctrl)
> ctrl->dcbaa->dev_context_ptrs[0] =
> cpu_to_le64((uintptr_t)scratchpad->sp_array);
>
> + xhci_flush_cache((uintptr_t)&ctrl->dcbaa->dev_context_ptrs[0],
> + sizeof(ctrl->dcbaa->dev_context_ptrs[0]));
> +
> page_size = xhci_readl(&hcor->or_pagesize) & 0xffff;
> for (i = 0; i < 16; i++) {
> if ((0x1 & page_size) != 0)
>
--
Best regards,
Marek Vasut
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