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usb: xhci-mtk: disable all ports when disable host controller

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This is used to avoid the ports status of IPPC being brought in kernel
stage, it may cause ports error especially when the xhci controller is
a component of dual-role controller.

Reported-by: Yun-Chien Yu <yun-chien.yu@mediatek.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
This commit is contained in:
Chunfeng Yun 2022-05-27 09:52:09 +08:00 committed by Marek Vasut
parent 8f527342db
commit fe8e8af36c
1 changed files with 4 additions and 2 deletions
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6
drivers/usb/host/xhci-mtk.c
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@ -122,11 +122,13 @@ static int xhci_mtk_host_disable(struct mtk_xhci *mtk)
/* power down all u3 ports */
for (i = 0; i < mtk->num_u3ports; i++)
setbits_le32(mtk->ippc + IPPC_U3_CTRL(i), CTRL_U3_PORT_PDN);
setbits_le32(mtk->ippc + IPPC_U3_CTRL(i),
CTRL_U3_PORT_PDN | CTRL_U3_PORT_DIS);
/* power down all u2 ports */
for (i = 0; i < mtk->num_u2ports; i++)
setbits_le32(mtk->ippc + IPPC_U2_CTRL(i), CTRL_U2_PORT_PDN);
setbits_le32(mtk->ippc + IPPC_U2_CTRL(i),
CTRL_U2_PORT_PDN | CTRL_U2_PORT_DIS);
/* power down host ip */
setbits_le32(mtk->ippc + IPPC_IP_PW_CTRL1, CTRL1_IP_HOST_PDN);