Re: [PATCH 2/2] watchdog: loongson1_wdt: Add DT support

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On 4/7/23 04:00, 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() accordingly.

Signed-off-by: Keguang Zhang <keguang.zhang@xxxxxxxxx>
---
  drivers/watchdog/loongson1_wdt.c | 12 +++++++++++-
  1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/loongson1_wdt.c b/drivers/watchdog/loongson1_wdt.c
index bb3d075c0633..c2694222ea86 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/mod_devicetable.h>
  #include <linux/platform_device.h>
  #include <linux/watchdog.h>
  #include <loongson1.h>
@@ -100,7 +101,7 @@ static int ls1x_wdt_probe(struct platform_device *pdev)
  	if (IS_ERR(drvdata->base))
  		return PTR_ERR(drvdata->base);
- drvdata->clk = devm_clk_get(dev, pdev->name);
+	drvdata->clk = devm_clk_get(dev, NULL);
  	if (IS_ERR(drvdata->clk))
  		return PTR_ERR(drvdata->clk);
@@ -142,10 +143,19 @@ 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,ls1x-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 = ls1x_wdt_dt_ids,

If CONFIG_OF=n, this would result in a missing symbol.

Guenter




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