Re: [PATCH 2/6] usb: chipidea: usb2: add optional reset support

On 26-08-12 17:26:13, Junzhong Pan wrote:
> The USB2 controller of SpacemiT K1 SoC requires reset support, to keep
> compatibility, add optional reset support.
> 
> Signed-off-by: Junzhong Pan <[email protected]>
> ---
>  drivers/usb/chipidea/ci_hdrc_usb2.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/usb/chipidea/ci_hdrc_usb2.c b/drivers/usb/chipidea/ci_hdrc_usb2.c
> index 8ffa1e95d8e8..00d575cd2955 100644
> --- a/drivers/usb/chipidea/ci_hdrc_usb2.c
> +++ b/drivers/usb/chipidea/ci_hdrc_usb2.c
> @@ -12,6 +12,7 @@
>  #include <linux/phy/phy.h>
>  #include <linux/platform_device.h>
>  #include <linux/property.h>
> +#include <linux/reset.h>
>  #include <linux/usb/chipidea.h>
>  #include <linux/usb/hcd.h>
>  #include <linux/usb/ulpi.h>
> @@ -21,6 +22,7 @@
>  struct ci_hdrc_usb2_priv {
>  	struct platform_device	*ci_pdev;
>  	struct clk		*clk;
> +	struct reset_control	*reset;
>  };
>  
>  static const struct ci_hdrc_platform_data ci_default_pdata = {
> @@ -80,6 +82,12 @@ static int ci_hdrc_usb2_probe(struct platform_device *pdev)
>  		return ret;
>  	}
>  
> +	priv->reset = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL);
> +	if (IS_ERR(priv->reset)) {
> +		ret = PTR_ERR(priv->reset);
> +		goto clk_err;
> +	}
> +

You may update binding doc?

Acked-by: Peter Chen <[email protected]>

Peter
>  	ci_pdata->name = dev_name(dev);
>  
>  	priv->ci_pdev = ci_hdrc_add_device(dev, pdev->resource,
> 
> -- 
> 2.34.1
> 

-- 

Thanks,
Peter Chen