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

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On 01/11, Gregory CLEMENT wrote:
> From: Konstantin Porotchkin <kostap@xxxxxxxxxxx>
> 
> Add fixed clock of 400MHz to system controller driver.  This clock is
> used as SD/eMMC clock source.
> 
> Signed-off-by: Konstantin Porotchkin <kostap@xxxxxxxxxxx>
> Reviewed-by: Omri Itach <omrii@xxxxxxxxxxx>
> Reviewed-by: Hanna Hawa <hannah@xxxxxxxxxxx>
> [fixed up conflicts, added error handling --rmk]
> Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
> Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
> ---

Acked-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>

> 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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