Subject: [PATCH v5 01/12] clk: apn806: Add eMMC clock to system controller driver

From: [email-masked] (Stephen Boyd)
Date: Fri, 20 Jan 2017 16:16:48 -0800

On 01/11, Gregory CLEMENT wrote:
> From: Konstantin Porotchkin <[email-masked]>
> 
> Add fixed clock of 400MHz to system controller driver.  This clock is
> used as SD/eMMC clock source.
> 
> Signed-off-by: Konstantin Porotchkin <[email-masked]>
> Reviewed-by: Omri Itach <[email-masked]>
> Reviewed-by: Hanna Hawa <[email-masked]>
> [fixed up conflicts, added error handling --rmk]
> Signed-off-by: Russell King <[email-masked]>
> Signed-off-by: Gregory CLEMENT <[email-masked]>
> ---

Acked-by: Stephen Boyd <[email-masked]>

> diff --git a/drivers/clk/mvebu/ap806-system-controller.c b/drivers/clk/mvebu/ap806-system-controller.c
> index 8181b919f062..0a785076b0c6 100644
> --- a/drivers/clk/mvebu/ap806-system-controller.c
> +++ b/drivers/clk/mvebu/ap806-system-controller.c
> @@ -117,6 +117,17 @@ static int ap806_syscon_clk_probe(struct platform_device *pdev)
>  		goto fail3;
>  	}
>  
> +	/* eMMC Clock is fixed clock divided by 3 */
> +	of_property_read_string_index(np, "clock-output-names",
> +				      4, &name);

This could check for failure and not register the clk if the name
isn't there? Then dts can be backwards compatible.

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