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| author |  Chunfeng Yun <chunfeng.yun@mediatek.com>
| 2022-05-23 17:04:48 +0800 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2022-06-10 11:50:05 +0200 |
| commit | 32b615ed4b7da586eb447212e3d2665b8aa6fdb2 (patch) | |
| tree | a7fd705e907fc7c4135ba9fc44c61e2a1a3a3a63 /drivers/usb/host | |
| parent | dt-bindings: usb: mtu3: add support 'resets' property (diff) | |
| download | linux-32b615ed4b7da586eb447212e3d2665b8aa6fdb2.tar.gz linux-32b615ed4b7da586eb447212e3d2665b8aa6fdb2.tar.bz2 linux-32b615ed4b7da586eb447212e3d2665b8aa6fdb2.zip | |
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 <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20220523090449.14430-3-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.c | 7 |
1 files changed, 7 insertions, 0 deletions
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; |