| Message ID | 20220523090449.14430-3-chunfeng.yun@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/4] dt-bindings: usb: mtk-xhci: add support 'resets' property | expand |
Il 23/05/22 11:04, Chunfeng Yun ha scritto: > 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@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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;
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@mediatek.com> --- drivers/usb/host/xhci-mtk.c | 7 +++++++ 1 file changed, 7 insertions(+)