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.
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
drivers/usb/host/xhci-mtk.c | 7 +++++++
1 file changed, 7 insertions(+)
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 <linux/pm_wakeirq.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
#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;
--
2.18.0
