Re: [PATCH 09/16] clk: Use the generic OF phandle parsing in only one place

[Brian Masney <bmasney@redhat.com>]

On Fri, Mar 27, 2026 at 09:09:31PM +0100, Miquel Raynal (Schneider Electric) wrote:
> There should be one single entry in the OF world, so that the way we
> parse the DT is always the same. make sure this is the case by avoid
> calling of_parse_phandle_with_args() from of_clk_get_parent_name(). This
> is even more relevant as we currently fail to parse clock-ranges. As a
> result, it seems to be safer to directly call of_parse_clkspec() there.
> 
> Suggested-by: Stephen Boyd <sboyd@kernel.org>
> Signed-off-by: Miquel Raynal (Schneider Electric) <miquel.raynal@bootlin.com>
> ---
>  drivers/clk/clk.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index 591c0780b61e..93e33ff30f3a 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -5375,8 +5375,7 @@ const char *of_clk_get_parent_name(const struct device_node *np, int index)
>  	int count;
>  	struct clk *clk;
>  
> -	rc = of_parse_phandle_with_args(np, "clocks", "#clock-cells", index,
> -					&clkspec);
> +	rc = of_parse_clkspec(np, index, NULL, &clkspec);
>  	if (rc)
>  		return NULL;

Reviewed-by: Brian Masney <bmasney@redhat.com>

In case a Fixes tag is warranted, it's not exactly clear what should be
used. This was introduced in commit 766e6a4ec602 ("clk: add DT clock
binding support") in 2012. However of_parse_clkspec was introduced in
commit 4472287a3b2f5 ("clk: Introduce of_clk_get_hw_from_clkspec()") in
2018.