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>
---
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)
--
2.7.4
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