Lukasz Majewski wrote:
>
> This patch supports to control usb otg phy of EXYNOS4210.
>
> Signed-off-by: Joonyoung Shim <[email protected]>
> Signed-off-by: Kyungmin Park <[email protected]>
> [Rebased on the newest git/kgene/linux-samsung #for-next]
> Signed-off-by: Lukasz Majewski <[email protected]>
> ---
> arch/arm/mach-exynos/include/mach/irqs.h | 1 +
> arch/arm/mach-exynos/include/mach/map.h | 4 +
> arch/arm/mach-exynos/include/mach/regs-pmu.h | 3 +
> arch/arm/mach-exynos/setup-usb-phy.c | 95
+++++++++++++++++++-----
> --
> 4 files changed, 78 insertions(+), 25 deletions(-)
>
[...]
Hi Lukasz,
I have small comments on this.
> +static int exynos4_usb_phy0_init(struct platform_device *pdev)
> +{
> + u32 rstcon;
> +
> + writel(readl(S5P_USBDEVICE_PHY_CONTROL) | S5P_USBDEVICE_PHY_ENABLE,
> + S5P_USBDEVICE_PHY_CONTROL);
> +
> + exynos4_usb_phy_clkset(pdev);
> +
> + /* set to normal PHY0 */
> + writel((readl(EXYNOS4_PHYPWR) & ~PHY0_NORMAL_MASK), EXYNOS4_PHYPWR);
> +
> + /* reset PHY0 and Link */
> + rstcon = readl(EXYNOS4_RSTCON) | PHY0_SWRST_MASK;
> + writel(rstcon, EXYNOS4_RSTCON);
> + udelay(10);
> +
> + rstcon &= ~PHY0_SWRST_MASK;
> + writel(rstcon, EXYNOS4_RSTCON);
> + udelay(80);
Do we _really_ need above udelay(80)?
As I know, we only need it in the phy1_init() for EHCI and we don't need it
here.
[...]
> int s5p_usb_phy_init(struct platform_device *pdev, int type)
> {
> - if (type == S5P_USB_PHY_HOST)
> + if (type == S5P_USB_PHY_DEVICE)
> + return exynos4_usb_phy0_init(pdev);
I think, this should be exynos4210_usb_phy0_init(pdev), because this is
available on only exynos4210 not exynos4x12 and exynos5.
> + else if (type == S5P_USB_PHY_HOST)
> return exynos4_usb_phy1_init(pdev);
Same as above.
>
> return -EINVAL;
> @@ -144,7 +187,9 @@ int s5p_usb_phy_init(struct platform_device *pdev, int
> type)
>
> int s5p_usb_phy_exit(struct platform_device *pdev, int type)
> {
> - if (type == S5P_USB_PHY_HOST)
> + if (type == S5P_USB_PHY_DEVICE)
> + return exynos4_usb_phy0_exit(pdev);
Same as above.
> + else if (type == S5P_USB_PHY_HOST)
> return exynos4_usb_phy1_exit(pdev);
Same as above.
If you're ok on my comments, could you please update it as soon as possible
for v3.5?
Thanks.
Best regards,
Kgene.
--
Kukjin Kim <[email protected]>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.
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