[PATCH 1/7] usb: ehci-mx6: Add powerup_fixup implementation

[Marek Vasut]

On 6/29/20 4:13 AM, Peng Fan wrote:

[...]

> +static void ehci_mx6_powerup_fixup(struct ehci_ctrl *ctrl, uint32_t *status_reg,
> +				   uint32_t *reg)
> +{
> +	u32 result;
> +	int usec = 2000;
> +
> +	mdelay(50);
> +
> +	do {
> +		result = ehci_readl(status_reg);
> +		udelay(5);
> +		if (!(result & EHCI_PS_PR))
> +			break;
> +		usec--;
> +	} while (usec > 0);
> +
> +	*reg = ehci_readl(status_reg);
> +}

Please use wait_for_bit*() . Also, is the 50 mS delay upfront required
or can this be wait_for_bit with 60000 uS timeout ?