Re: [PATCH 4/5] i2c: imx-lpi2c: improve i2c driver probe priority

From: Stefan Wahren
Date: Thu Aug 29 2024 - 06:18:28 EST


Hi Carlos,

Am 29.08.24 um 11:37 schrieb carlos.song@xxxxxxx:
From: Carlos Song <carlos.song@xxxxxxx>

Some i2c devices such as PMICs need i2c bus available early.
Use subsys_initcall to improve i2c driver probe priority.
thanks for providing this patch.

Please try to be more specific, which devices/platform has been effected
by this issue. It would be nice to provide to kind of
link/reference/discussion.

Best regards

Signed-off-by: Carlos Song <carlos.song@xxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
---
drivers/i2c/busses/i2c-imx-lpi2c.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-imx-lpi2c.c b/drivers/i2c/busses/i2c-imx-lpi2c.c
index 0159ade235ef..210d505db76d 100644
--- a/drivers/i2c/busses/i2c-imx-lpi2c.c
+++ b/drivers/i2c/busses/i2c-imx-lpi2c.c
@@ -1487,7 +1487,17 @@ static struct platform_driver lpi2c_imx_driver = {
},
};

-module_platform_driver(lpi2c_imx_driver);
+static int __init lpi2c_imx_init(void)
+{
+ return platform_driver_register(&lpi2c_imx_driver);
+}
+subsys_initcall(lpi2c_imx_init);
+
+static void __exit lpi2c_imx_exit(void)
+{
+ platform_driver_unregister(&lpi2c_imx_driver);
+}
+module_exit(lpi2c_imx_exit);

MODULE_AUTHOR("Gao Pan <pandy.gao@xxxxxxx>");
MODULE_DESCRIPTION("I2C adapter driver for LPI2C bus");