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mfd: intel-lpss: Add Dell Latitude 7275 to the resource conflict quirk

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The Dell Latitude 7275 2-in-1 has the same BIOS bug as the Latitude 5285:
the ACPI GEXP device declares an OperationRegion (BAR0) on the GNVS
variable SB04 and the I2C4 controller (INT3446) builds its _CRS from that
same variable, so intel_lpss_acpi fails to bind the controller with
-EBUSY and the front camera sensor (OV5670, INT3479) is never registered
unless acpi_enforce_resources=lax is passed.

Add the machine to the DMI table so QUIRK_IGNORE_RESOURCE_CONFLICTS is
applied to INT3446 on it as well.

Assisted-by: LLM
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: D. Manresa <dmanresa@gmail.com>
Signed-off-by: Thierry Chatard <tchatard@gmail.com>
Link: https://patch.msgid.link/20261002163350.1248431-3-tchatard@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
D. Manresa 2026-10-02 09:33:43 -07:00 committed by Lee Jones
parent 194da454d5
commit 495d5f41a6
1 changed files with 6 additions and 0 deletions
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6
drivers/mfd/intel-lpss-acpi.c
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@ -191,6 +191,12 @@ static const struct dmi_system_id intel_lpss_quirk_dmi[] = {
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 5285"),
},
},
{
.matches = {
DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Latitude 7275"),
},
},
{ }
};