[U-Boot] [PATCH] sunxi: musb: Properly put the musb controller back in reset on exit

[Chen-Yu Tsai]

On Wed, May 20, 2015 at 10:40 PM, Hans de Goede <hdegoede at redhat.com> wrote:
> Assert reset and disable the clock to properly put the musb controller
> back in reset on exit.

Last I checked the exit functions are not called except for error handling
in the probe sequence. Has this been fixed?

ChenYu

> Signed-off-by: Hans de Goede <hdegoede at redhat.com>
> ---
>  drivers/usb/musb-new/sunxi.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
> index e8a3a23..e2c9d5a 100644
> --- a/drivers/usb/musb-new/sunxi.c
> +++ b/drivers/usb/musb-new/sunxi.c
> @@ -284,6 +284,8 @@ static int sunxi_musb_init(struct musb *musb)
>
>  static int sunxi_musb_exit(struct musb *musb)
>  {
> +       struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
> +
>         pr_debug("%s():\n", __func__);
>
>         USBC_DisableDpDmPullUp(musb->mregs);
> @@ -291,6 +293,11 @@ static int sunxi_musb_exit(struct musb *musb)
>         sunxi_usb_phy_power_off(0);
>         sunxi_usb_phy_exit(0);
>
> +#ifdef CONFIG_SUNXI_GEN_SUN6I
> +       clrbits_le32(&ccm->ahb_reset0_cfg, 1 << AHB_GATE_OFFSET_USB0);
> +#endif
> +       clrbits_le32(&ccm->ahb_gate0, 1 << AHB_GATE_OFFSET_USB0);
> +
>         return 0;
>  }
>
> --
> 2.4.1
>
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