linux-kernel - [PATCH 2/2] watchdog: loongson1

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Message-Id: <20230407110025.516405-3-keguang.zhang@gmail.com>
Date:   Fri,  7 Apr 2023 19:00:25 +0800
From:   Keguang Zhang <keguang.zhang@...il.com>
To:     linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Yang Ling <gnaygnil@...il.com>,
        Keguang Zhang <keguang.zhang@...il.com>
Subject: [PATCH 2/2] watchdog: loongson1_wdt: Add DT support

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@...il.com>
---
 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,
 	},
 };
 
-- 
2.34.1