[PATCH v3 5/5] media: ov8858: add ACPI device ID INT3477 and vsio power supply

Thierry Chatard
2026-04-17T16:33:11Z

The Omnivision OV8858 appears in ACPI firmware under the HID INT3477 on
Intel IPU3-based platforms such as the Dell Latitude 5285 2-in-1. Add
INT3477 to the ACPI match table so the driver binds when instantiated by
ipu_bridge.

On the Dell Latitude 5285 the OV8858 is powered through a TPS68470 PMIC.
The TPS68470 VSIO regulator controls the S_I2C_CTL register (0x43) which
enables I2C passthrough to the sensor. The board data for this machine
maps VSIO to the supply name "vsio" for INT3477. Add "vsio" to
ov8858_supply_names[] so the driver requests this regulator at probe time.

The existing supply array had a duplicate "dvdd" entry; replace it with
the new "vsio" entry and reorder to: avdd, dvdd, dovdd, vsio.

Signed-off-by: Thierry Chatard <tchatard@gmail.com>
---
drivers/media/i2c/ov8858.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
index 3f45f7fab..5bfea237b 100644
--- a/drivers/media/i2c/ov8858.c
+++ b/drivers/media/i2c/ov8858.c
@@ -79,8 +79,9 @@

static const char * const ov8858_supply_names[] = {
"avdd", /* Analog power */
- "dovdd", /* Digital I/O power */
"dvdd", /* Digital core power */
+ "dovdd", /* Digital I/O power */
+ "vsio", /* Secondary I2C / S_I2C_CTL enable */
};

struct regval {
@@ -1981,11 +1982,18 @@ static const struct of_device_id ov8858_of_match[] = {
};
MODULE_DEVICE_TABLE(of, ov8858_of_match);

+static const struct acpi_device_id ov8858_acpi_ids[] = {
+ { "INT3477" },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(acpi, ov8858_acpi_ids);
+
static struct i2c_driver ov8858_i2c_driver = {
.driver = {
.name = "ov8858",
.pm = &ov8858_pm_ops,
.of_match_table = ov8858_of_match,
+ .acpi_match_table = ACPI_PTR(ov8858_acpi_ids),
},
.probe = ov8858_probe,
.remove = ov8858_remove,
--
2.51.0