[U-Boot] [PATCH 18/20] rockchip: clk: Support setting ACLK

[Kever Yang]

Hi Simon,

On 11/01/2016 04:39 AM, Simon Glass wrote:
> Add basic support for setting the ARM clock, since this allows us to run
> at maximum speed in U-Boot. Currently only a single speed is supported
> (1.8GHz).
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>   drivers/clk/rockchip/clk_rk3288.c | 7 +++++++
>   1 file changed, 7 insertions(+)
>
> diff --git a/drivers/clk/rockchip/clk_rk3288.c b/drivers/clk/rockchip/clk_rk3288.c
> index ed97e87..d15504c 100644
> --- a/drivers/clk/rockchip/clk_rk3288.c
> +++ b/drivers/clk/rockchip/clk_rk3288.c
> @@ -691,6 +691,13 @@ static ulong rk3288_clk_set_rate(struct clk *clk, ulong rate)
>   
>   	gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
>   	switch (clk->id) {
> +	case PLL_APLL:
> +		/* We only support a fixed rate here */
> +		if (rate != 1800000000)
> +			return -EINVAL;
> +		rk3288_clk_configure_cpu(priv->cru, priv->grf);
> +		new_rate = rate;
> +		break;
>   	case CLK_DDR:
>   		new_rate = rkclk_configure_ddr(priv->cru, priv->grf, rate);
>   		break;

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

Thanks,
- Kever