[U-Boot] [PATCH] arm:exynos:fix: Fix clock calculation for Exynos4210 based targets.

Simon Glass
2013-07-16T00:52:02Z

On Fri, Jul 12, 2013 at 11:08 AM, Lukasz Majewski <l.majewski@samsung.com>wrote:

> Provide proper setting for the APLL fout frequency calculation for
> Exynos4 based targets (especially Exynos4210 - Trats board).
>
>
> Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
> Cc: Minkyu Kang <mk7.kang@samsung.com>
>

This also fixes booting on snow.

Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

> ---
> arch/arm/cpu/armv7/exynos/clock.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/clock.c
> b/arch/arm/cpu/armv7/exynos/clock.c
> index 9f07181..5a5cfa1 100644
> --- a/arch/arm/cpu/armv7/exynos/clock.c
> +++ b/arch/arm/cpu/armv7/exynos/clock.c
> @@ -141,18 +141,17 @@ static int exynos_get_pll_clk(int pllreg, unsigned
> int r, unsigned int k)
> fout = (m + k / div) * (freq / (p * (1 << s)));
> } else {
> /*
> - * Exynos4210
> + * Exynos4412 / Exynos5250
> * FOUT = MDIV * FIN / (PDIV * 2^SDIV)
> *
> - * Exynos4412 / Exynos5250
> + * Exynos4210
> * FOUT = MDIV * FIN / (PDIV * 2^(SDIV-1))
> */
> if (proid_is_exynos4210())
> - fout = m * (freq / (p * (1 << s)));
> - else
> fout = m * (freq / (p * (1 << (s - 1))));
> + else
> + fout = m * (freq / (p * (1 << s)));
> }
> -
> return fout;
> }
>
> --
> 1.7.10.4
>
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