[PATCH 03/18] clk: imx: clk-imxrt1050: setup PLL5 for video in non-SPL

[Lukasz Majewski]

On Wed, 26 Feb 2020 18:15:46 +0100
Giulio Benetti <giulio.benetti at benettiengineering.com> wrote:

> mxsfb needs PLL5 as source, so let's setup it and set it as source for
> mxsfb(lcdif).
> 
> Signed-off-by: Giulio Benetti <giulio.benetti at benettiengineering.com>
> ---
>  drivers/clk/imx/clk-imxrt1050.c | 13 ++++++++++++-
>  1 file changed, 12 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/imx/clk-imxrt1050.c
> b/drivers/clk/imx/clk-imxrt1050.c index e33d426363..2819ffb9ac 100644
> --- a/drivers/clk/imx/clk-imxrt1050.c
> +++ b/drivers/clk/imx/clk-imxrt1050.c
> @@ -238,9 +238,9 @@ static int imxrt1050_clk_probe(struct udevice
> *dev) clk_dm(IMXRT1050_CLK_LCDIF,
>  	       imx_clk_gate2("lcdif", "lcdif_podf", base + 0x70,
> 28)); 
> -#ifdef CONFIG_SPL_BUILD
>  	struct clk *clk, *clk1;
>  
> +#ifdef CONFIG_SPL_BUILD
>  	/* bypass pll1 before setting its rate */
>  	clk_get_by_id(IMXRT1050_CLK_PLL1_REF_SEL, &clk);
>  	clk_get_by_id(IMXRT1050_CLK_PLL1_BYPASS, &clk1);
> @@ -271,7 +271,18 @@ static int imxrt1050_clk_probe(struct udevice
> *dev) 
>  	clk_get_by_id(IMXRT1050_CLK_PLL3_BYPASS, &clk1);
>  	clk_set_parent(clk1, clk);
> +#else
> +	/* Set PLL5 for LCDIF to its default 650Mhz */
> +	clk_get_by_id(IMXRT1050_CLK_PLL5_VIDEO, &clk);
> +	clk_enable(clk);
> +	clk_set_rate(clk, 650000000UL);
> +
> +	clk_get_by_id(IMXRT1050_CLK_PLL5_BYPASS, &clk1);
> +	clk_set_parent(clk1, clk);
>  
> +	/* Configure PLL5 as LCDIF source */
> +	clk_get_by_id(IMXRT1050_CLK_LCDIF_SEL, &clk1);
> +	clk_set_parent(clk1, clk);
>  #endif
>  
>  	return 0;

Reviewed-by: Lukasz Majewski <lukma at denx.de>


Best regards,

Lukasz Majewski

--

DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma at denx.de
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