Skip to content

Commit b3b3519

Browse files
jwrdegoederafaeljw
authored andcommitted
ACPI: LPSS: Add LNXVIDEO -> BYT I2C1 to lpss_device_links
Various Asus Bay Trail devices (T100TA, T100CHI, T200TA) have an embedded controller connected to I2C1 and the iGPU (LNXVIDEO) _PS0/_PS3 methods access it, so we need to add a consumer link from LNXVIDEO to I2C1 on these devices to avoid suspend/resume ordering problems. Fixes: 2d71ee0 ("ACPI / LPSS: Add a device link from the GPU to the BYT I2C5 controller") Tested-by: Pierre-Louis Bossart <[email protected]> Signed-off-by: Hans de Goede <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Cc: 4.20+ <[email protected]> # 4.20+ Signed-off-by: Rafael J. Wysocki <[email protected]>
1 parent cc18735 commit b3b3519

File tree

1 file changed

+2
-0
lines changed

1 file changed

+2
-0
lines changed

drivers/acpi/acpi_lpss.c

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -477,6 +477,8 @@ static const struct lpss_device_links lpss_device_links[] = {
477477
{"808622C1", "7", "80860F14", "3", DL_FLAG_PM_RUNTIME},
478478
/* CHT iGPU depends on PMIC I2C controller */
479479
{"808622C1", "7", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
480+
/* BYT iGPU depends on the Embedded Controller I2C controller (UID 1) */
481+
{"80860F41", "1", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
480482
/* BYT CR iGPU depends on PMIC I2C controller (UID 5 on CR) */
481483
{"80860F41", "5", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME},
482484
/* BYT iGPU depends on PMIC I2C controller (UID 7 on non CR) */

0 commit comments

Comments
 (0)