[v2,7/8] rockchip: puma: drop special handling of usb host regulator

From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

With the current usb stack in u-boot, all host ports on puma work
flawlessly without any additional special handling, so drop that
usb hub hacking from the puma board.

Tested with mass-storage and usb-ethernet on both usb3 and usb2 ports.

Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
---
 .../puma_rk3399/puma-rk3399.c                 | 67 -------------------
 1 file changed, 67 deletions(-)

On 2020/6/4 ??6:09, Heiko Stuebner wrote:
> From: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>
>
> With the current usb stack in u-boot, all host ports on puma work
> flawlessly without any additional special handling, so drop that
> usb hub hacking from the puma board.
>
> Tested with mass-storage and usb-ethernet on both usb3 and usb2 ports.
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner at theobroma-systems.com>

Reviewed-by: Kever Yang <kever.yang at rock-chips.com>

Thanks,
- Kever
> ---
>   .../puma_rk3399/puma-rk3399.c                 | 67 -------------------
>   1 file changed, 67 deletions(-)
>
> diff --git a/board/theobroma-systems/puma_rk3399/puma-rk3399.c b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> index 65bb2ad6f2..deeba3084a 100644
> --- a/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> +++ b/board/theobroma-systems/puma_rk3399/puma-rk3399.c
> @@ -152,70 +152,3 @@ void get_board_serial(struct tag_serialnr *serialnr)
>   	serialnr->low = (u32)(serial & 0xffffffff);
>   }
>   #endif
> -
> -/**
> - * Switch power at an external regulator (for our root hub).
> - *
> - * @param ctrl pointer to the xHCI controller
> - * @param port port number as in the control message (one-based)
> - * @param enable boolean indicating whether to enable or disable power
> - * @return returns 0 on success, an error-code on failure
> - */
> -static int board_usb_port_power_set(struct udevice *dev, int port,
> -				    bool enable)
> -{
> -#if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_REGULATOR)
> -	/* We start counting ports at 0, while USB counts from 1. */
> -	int index = port - 1;
> -	const char *regname = NULL;
> -	struct udevice *regulator;
> -	const char *prop = "tsd,usb-port-power";
> -	int ret;
> -
> -	debug("%s: ctrl '%s' port %d enable %s\n", __func__,
> -	      dev_read_name(dev), port, enable ? "true" : "false");
> -
> -	ret = dev_read_string_index(dev, prop, index, &regname);
> -	if (ret < 0) {
> -		debug("%s: ctrl '%s' port %d: no entry in '%s'\n",
> -		      __func__, dev_read_name(dev), port, prop);
> -		return ret;
> -	}
> -
> -	ret = regulator_get_by_platname(regname, &regulator);
> -	if (ret) {
> -		debug("%s: ctrl '%s' port %d: could not get regulator '%s'\n",
> -		      __func__, dev_read_name(dev), port, regname);
> -		return ret;
> -	}
> -
> -	regulator_set_enable(regulator, enable);
> -	return 0;
> -#else
> -	return -ENOTSUPP;
> -#endif
> -}
> -
> -void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
> -{
> -	struct udevice *dev = hub->pusb_dev->dev;
> -	struct udevice *ctrl;
> -
> -	/* We are only interested in our root-hubs */
> -	if (usb_hub_is_root_hub(dev) == false)
> -		return;
> -
> -	ctrl = usb_get_bus(dev);
> -	if (!ctrl) {
> -		debug("%s: could not retrieve ctrl for hub\n", __func__);
> -		return;
> -	}
> -
> -	/*
> -	 * To work around an incompatibility between the single-threaded
> -	 * USB stack in U-Boot and (a strange low-power mode of) the USB
> -	 * hub we have on-module, we need to delay powering on the hub
> -	 * until the first time the port is probed.
> -	 */
> -	board_usb_port_power_set(ctrl, port, true);
> -}