[PATCH v2] mfd: da9063: occupy second I2C address, too

From: Wolfram Sang

Date: Tue Oct 07 2025 - 11:40:26 EST


The second address can be used as a shortcut to access register pages
2+3. The driver does not use this feature yet. The second address should
still be marked as used, otherwise userspace could interfere with the
driver.

Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Peter Rosin <peda@xxxxxxxxxx>
Reviewed-by: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>
---

Change since v1: reworded commit message

drivers/mfd/da9063-i2c.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/mfd/da9063-i2c.c b/drivers/mfd/da9063-i2c.c
index 1ec9ab56442d..12f3dd927aba 100644
--- a/drivers/mfd/da9063-i2c.c
+++ b/drivers/mfd/da9063-i2c.c
@@ -469,6 +469,8 @@ static int da9063_i2c_probe(struct i2c_client *i2c)
}
}

+ devm_i2c_new_dummy_device(&i2c->dev, i2c->adapter, i2c->addr + 1);
+
return da9063_device_init(da9063, i2c->irq);
}

--
2.47.2