On Wednesday, August 05, 2015 at 08:31:57 PM, slemieux.t...@gmail.com wrote:
> From: Sylvain Lemieux <slemi...@tycoint.com>
>
> Incorporate USB driver from legacy LPCLinux NXP BSP.
> The files taken from the legacy patch are:
> - lpc32xx USB driver
> - lpc3250 header file USB registers definition.
>
> The legacy driver was updated and clean-up as part of the integration with
> the latest u-boot.
>
> Signed-off-by: Sylvain Lemieux <slemi...@tycoint.com>
[...]
> +int usb_cpu_init(void)
> +{
> + unsigned long start;
> + u32 ret;
> +
> + /*
> + * USB pins routing setup is done by "lpc32xx_usb_init()" and should
> + * be call by board "board_init()" or "misc_init_r()" functions.
> + */
> +
> + /* enable AHB slave USB clock */
> + setbits_le32(&clk_pwr->usb_ctrl,
> + CLK_USBCTRL_HCLK_EN | CLK_USBCTRL_BUS_KEEPER);
> +
> + /* enable I2C clock in OTG block if it isn't */
> + if ((readl(&otg->otg_clk_sts) & OTG_CLK_I2C_EN) != OTG_CLK_I2C_EN) {
> + writel(OTG_CLK_I2C_EN, &otg->otg_clk_ctrl);
> +
> + start = get_timer(0);
> + while (1) {
> + if (readl(&otg->otg_clk_sts) == OTG_CLK_I2C_EN)
> + break;
> +
> + if (get_timer(start) > 100)
> + return -1;
return -ETIMEDOUT :)
> +
> + udelay(1);
> + }
Can't you use wait_for_bit() here too ?
> + }
Looks good otherwise, thanks !
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