On Tue, Jul 30, 2024 at 10:56:10AM -0400, Frank Li wrote:
> Move post_rcs_wait into struct imx_wdt_hw_feature to simple code logic for
> difference compatible string.
>
> i.MX93 watchdog needn't wait 2.5 clocks after RCS is done. So needn't set
> post_rcs_wait.
>
> Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Signed-off-by: Alice Guo <alice.guo@xxxxxxx>
> Reviewed-by: Ye Li <ye.li@xxxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
Ping?
Frank
> Change from v4 to v5
> - move compatible string 8ulp under 7ulp
> Chagne from v3 to v4:
> - Go back to v2 according to Guenter's feedback
> Change from v2 to v3:
> - Set post_rcs_wait to false explicitly to maintain code consistency
> - Add Guenter review tag.
> Change from v1 to v2:
> - Combine to one patch
> ---
> drivers/watchdog/imx7ulp_wdt.c | 21 +++++++++------------
> 1 file changed, 9 insertions(+), 12 deletions(-)
>
> diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
> index 94914a22daff7..0f13a30533574 100644
> --- a/drivers/watchdog/imx7ulp_wdt.c
> +++ b/drivers/watchdog/imx7ulp_wdt.c
> @@ -55,6 +55,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
>
> struct imx_wdt_hw_feature {
> bool prescaler_enable;
> + bool post_rcs_wait;
> u32 wdog_clock_rate;
> };
>
> @@ -62,7 +63,6 @@ struct imx7ulp_wdt_device {
> struct watchdog_device wdd;
> void __iomem *base;
> struct clk *clk;
> - bool post_rcs_wait;
> bool ext_reset;
> const struct imx_wdt_hw_feature *hw;
> };
> @@ -95,7 +95,7 @@ static int imx7ulp_wdt_wait_rcs(struct imx7ulp_wdt_device *wdt)
> ret = -ETIMEDOUT;
>
> /* Wait 2.5 clocks after RCS done */
> - if (wdt->post_rcs_wait)
> + if (wdt->hw->post_rcs_wait)
> usleep_range(wait_min, wait_min + 2000);
>
> return ret;
> @@ -334,15 +334,6 @@ static int imx7ulp_wdt_probe(struct platform_device *pdev)
> /* The WDOG may need to do external reset through dedicated pin */
> imx7ulp_wdt->ext_reset = of_property_read_bool(dev->of_node, "fsl,ext-reset-output");
>
> - imx7ulp_wdt->post_rcs_wait = true;
> - if (of_device_is_compatible(dev->of_node,
> - "fsl,imx8ulp-wdt")) {
> - dev_info(dev, "imx8ulp wdt probe\n");
> - imx7ulp_wdt->post_rcs_wait = false;
> - } else {
> - dev_info(dev, "imx7ulp wdt probe\n");
> - }
> -
> wdog = &imx7ulp_wdt->wdd;
> wdog->info = &imx7ulp_wdt_info;
> wdog->ops = &imx7ulp_wdt_ops;
> @@ -403,6 +394,12 @@ static const struct dev_pm_ops imx7ulp_wdt_pm_ops = {
> static const struct imx_wdt_hw_feature imx7ulp_wdt_hw = {
> .prescaler_enable = false,
> .wdog_clock_rate = 1000,
> + .post_rcs_wait = true,
> +};
> +
> +static const struct imx_wdt_hw_feature imx8ulp_wdt_hw = {
> + .prescaler_enable = false,
> + .wdog_clock_rate = 1000,
> };
>
> static const struct imx_wdt_hw_feature imx93_wdt_hw = {
> @@ -411,8 +408,8 @@ static const struct imx_wdt_hw_feature imx93_wdt_hw = {
> };
>
> static const struct of_device_id imx7ulp_wdt_dt_ids[] = {
> - { .compatible = "fsl,imx8ulp-wdt", .data = &imx7ulp_wdt_hw, },
> { .compatible = "fsl,imx7ulp-wdt", .data = &imx7ulp_wdt_hw, },
> + { .compatible = "fsl,imx8ulp-wdt", .data = &imx8ulp_wdt_hw, },
> { .compatible = "fsl,imx93-wdt", .data = &imx93_wdt_hw, },
> { /* sentinel */ }
> };
> --
> 2.34.1
>
