Subject: Re: [PATCH] clk: sunxi-ng: Use of_device_get_match_data()

From: Brian Masney <[email-masked]>
Date: Tue, 19 May 2026 10:16:54 -0400

Hi Rosen,

On Mon, May 18, 2026 at 05:39:50PM -0700, Rosen Penev wrote:
> Use of_device_get_match_data() to fetch the RTC CCU match data directly
> instead of open-coding an of_match_device() lookup.
> 
> This also lets the driver drop the of_device.h include.
> 
> Assisted-by: Codex:GPT-5.5
> Signed-off-by: Rosen Penev <[email-masked]>
> ---
>  drivers/clk/sunxi-ng/ccu-sun6i-rtc.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
> index f6bfeba009e8..a3cf0dde05be 100644
> --- a/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
> +++ b/drivers/clk/sunxi-ng/ccu-sun6i-rtc.c
> @@ -9,7 +9,6 @@
>  #include <linux/io.h>
>  #include <linux/module.h>
>  #include <linux/of.h>
> -#include <linux/of_device.h>
> 
>  #include <linux/clk/sunxi-ng.h>
> 
> @@ -353,14 +352,12 @@ int sun6i_rtc_ccu_probe(struct device *dev, void __iomem *reg)
>  {
>  	const struct sun6i_rtc_match_data *data;
>  	struct clk *ext_osc32k_clk = NULL;
> -	const struct of_device_id *match;
> 
>  	/* This driver is only used for newer variants of the hardware. */
> -	match = of_match_device(sun6i_rtc_ccu_match, dev);
> -	if (!match)
> +	data = of_device_get_match_data(dev);

sun6i_rtc_ccu_match becomes unused after this change. It'll use the
table associated the dev from drivers/rtc/rtc-sun6i.c.

Brian

> +	if (!data)
>  		return 0;
> 
> -	data = match->data;
>  	have_iosc_calibration = data->have_iosc_calibration;
> 
>  	if (data->have_ext_osc32k) {
> --
> 2.54.0
>