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usb: xhci-mem: Fix scratchpad array issue

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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.li@nxp.com>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Ye Li 2019-01-07 02:45:46 +00:00 committed by Marek Vasut
parent 54707a9420
commit 8c6cc71b40
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/xhci-mem.c
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@ -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)