On Thu, May 11, 2023 at 08:11:59PM +0800, Keguang Zhang wrote:
> This patch adds the of_match_table to enable DT support
> of Loongson-1 watchdog driver.
> And modify the parameter of devm_clk_get_enabled() accordingly.
>
> Signed-off-by: Keguang Zhang <keguang.zhang@xxxxxxxxx>
Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> ---
> V1 -> V2: Change the wildcard compatible string to specific ones
> Use of_match_ptr() to aviod the build error when CONFIG_OF=n
> ---
> drivers/watchdog/loongson1_wdt.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c
> index 3c651c50a98c..4ac7810a314d 100644
> --- a/drivers/watchdog/loongson1_wdt.c
> +++ b/drivers/watchdog/loongson1_wdt.c
> @@ -5,6 +5,7 @@
>
> #include <linux/clk.h>
> #include <linux/module.h>
> +#include <linux/of.h>
> #include <linux/platform_device.h>
> #include <linux/watchdog.h>
>
> @@ -112,7 +113,7 @@ static int ls1x_wdt_probe(struct platform_device *pdev)
> if (IS_ERR(drvdata->base))
> return PTR_ERR(drvdata->base);
>
> - drvdata->clk = devm_clk_get_enabled(dev, pdev->name);
> + drvdata->clk = devm_clk_get_enabled(dev, NULL);
> if (IS_ERR(drvdata->clk))
> return PTR_ERR(drvdata->clk);
>
> @@ -144,10 +145,20 @@ static int ls1x_wdt_probe(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_OF
> +static const struct of_device_id ls1x_wdt_dt_ids[] = {
> + { .compatible = "loongson,ls1b-wdt", },
> + { .compatible = "loongson,ls1c-wdt", },
> + { /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, ls1x_wdt_dt_ids);
> +#endif
> +
> static struct platform_driver ls1x_wdt_driver = {
> .probe = ls1x_wdt_probe,
> .driver = {
> .name = "ls1x-wdt",
> + .of_match_table = of_match_ptr(ls1x_wdt_dt_ids),
> },
> };
>
> --
> 2.39.2
>
