linux-kernel - [PATCH 1/2] extcon: max77693: add device-tree compatible string

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Message-Id: <20231005104327.981101-1-m.szyprowski@samsung.com>
Date:   Thu,  5 Oct 2023 12:43:25 +0200
From:   Marek Szyprowski <m.szyprowski@...sung.com>
To:     linux-kernel@...r.kernel.org
Cc:     Marek Szyprowski <m.szyprowski@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        MyungJoo Ham <myungjoo.ham@...sung.com>
Subject: [PATCH 1/2] extcon: max77693: add device-tree compatible string

Commit 57f706bf7307 ("ARM: dts: samsung: exynos4412-midas: add USB
connector and USB OTG") added a 'muic' node to the MAX77693 PMIC
definition in various device-tree files. Since that commit, the newly
created MFD cell gained its own of_node and compatible string. This
changed its modalias, what in turn broke automated loading of the driver
module, because the new modalias is based on the of_node compatible
string, not the platform device name.

Fix this by adding the needed device-tree compatible string.

Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
---
 drivers/extcon/extcon-max77693.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 1f1d9ab0c5c7..5fb9c413a23b 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -1258,6 +1258,12 @@ static int max77693_muic_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static const struct of_device_id of_max77693_muic_dt_match[] = {
+	{ .compatible = "maxim,max77693-muic", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, of_max77693_muic_dt_match);
+
 static struct platform_driver max77693_muic_driver = {
 	.driver		= {
 		.name	= DEV_NAME,
-- 
2.34.1