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From:   Eliav Farber <farbere@amazon.com>
To:     <jdelvare@suse.com>, <linux@roeck-us.net>, <robh+dt@kernel.org>,
        <mark.rutland@arm.com>, <linux-hwmon@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
CC:     <farbere@amazon.com>, <talel@amazon.com>, <hhhawa@amazon.com>,
        <jonnyc@amazon.com>, <hanochu@amazon.com>, <ronenk@amazon.com>,
        <itamark@amazon.com>, <shellykz@amazon.com>, <shorer@amazon.com>,
        <amitlavi@amazon.com>, <almogbs@amazon.com>, <dwmw@amazon.co.uk>,
        <rtanwar@maxlinear.com>
Subject: [PATCH 05/16] hwmon: (mr75203) add option to skip reset controller
Date:   Tue, 16 Aug 2022 08:27:46 +0000
Message-ID: <20220816082757.11990-6-farbere@amazon.com>
In-Reply-To: <20220816082757.11990-1-farbere@amazon.com>
References: <20220816082757.11990-1-farbere@amazon.com>
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Precedence: bulk

Adding a "reset-control-skip" bool property to the mr75203 node will
avoid looking up and obtaining a reference to a reset controller.

Signed-off-by: Eliav Farber <farbere@amazon.com>
---
 drivers/hwmon/mr75203.c | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/drivers/hwmon/mr75203.c b/drivers/hwmon/mr75203.c
index f89f7bb5d698..bec63b611eb4 100644
--- a/drivers/hwmon/mr75203.c
+++ b/drivers/hwmon/mr75203.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
@@ -525,14 +526,19 @@ static int mr75203_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	pvt->rst = devm_reset_control_get_exclusive(dev, NULL);
-	if (IS_ERR(pvt->rst))
-		return dev_err_probe(dev, PTR_ERR(pvt->rst),
-				     "failed to get reset control\n");
+	if (of_property_read_bool(dev->of_node, "reset-control-skip")) {
+		dev_info(dev, "skipping reset-control\n");
+	} else {
+		pvt->rst = devm_reset_control_get_exclusive(dev, NULL);
+		if (IS_ERR(pvt->rst))
+			return dev_err_probe(dev, PTR_ERR(pvt->rst),
+					     "failed to get reset control\n");
 
-	ret = pvt_reset_control_deassert(dev, pvt);
-	if (ret)
-		return dev_err_probe(dev, ret, "cannot deassert reset control\n");
+		ret = pvt_reset_control_deassert(dev, pvt);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "cannot deassert reset control\n");
+	}
 
 	ret = regmap_read(pvt->c_map, PVT_IP_CONFIG, &val);
 	if(ret < 0)
-- 
2.37.1