From 32b615ed4b7da586eb447212e3d2665b8aa6fdb2 Mon Sep 17 00:00:00 2001 From: Chunfeng Yun Date: Mon, 23 May 2022 17:04:48 +0800 Subject: usb: xhci-mtk: add support optional controller reset Add support controller reset via a reset-controller usually in infracfg, it's different with the software reset by IPPC which only used to reset MAC, and it will also reset IPPC meanwhile. Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/20220523090449.14430-3-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mtk.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers') diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c index b1045f534a4b..01705e559c42 100644 --- a/drivers/usb/host/xhci-mtk.c +++ b/drivers/usb/host/xhci-mtk.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "xhci.h" #include "xhci-mtk.h" @@ -550,6 +551,12 @@ static int xhci_mtk_probe(struct platform_device *pdev) if (ret) goto disable_ldos; + ret = device_reset_optional(dev); + if (ret) { + dev_err_probe(dev, ret, "failed to reset controller\n"); + goto disable_clk; + } + hcd = usb_create_hcd(driver, dev, dev_name(dev)); if (!hcd) { ret = -ENOMEM; -- cgit v1.2.3