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| author | Hans de Goede <hdegoede@redhat.com> | 2019-10-24 23:57:22 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-10-25 11:46:01 +0200 |
| commit | b3b3519c04bdff91651d0a6deb79dbd4516b5d7b (patch) | |
| tree | 7b4f46e288111025cb26fcdc2c6047cb98ff9e5a | |
| parent | cc18735f208565343a9824adeca5305026598550 (diff) | |
| download | linux-b3b3519c04bdff91651d0a6deb79dbd4516b5d7b.tar.bz2 | |
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: 2d71ee0ce72f ("ACPI / LPSS: Add a device link from the GPU to the BYT I2C5 controller")
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: 4.20+ <stable@vger.kernel.org> # 4.20+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/acpi/acpi_lpss.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c index e7a4504f0fbf..cd8cf3333f04 100644 --- a/drivers/acpi/acpi_lpss.c +++ b/drivers/acpi/acpi_lpss.c @@ -477,6 +477,8 @@ static const struct lpss_device_links lpss_device_links[] = { {"808622C1", "7", "80860F14", "3", DL_FLAG_PM_RUNTIME}, /* CHT iGPU depends on PMIC I2C controller */ {"808622C1", "7", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME}, + /* BYT iGPU depends on the Embedded Controller I2C controller (UID 1) */ + {"80860F41", "1", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME}, /* BYT CR iGPU depends on PMIC I2C controller (UID 5 on CR) */ {"80860F41", "5", "LNXVIDEO", NULL, DL_FLAG_PM_RUNTIME}, /* BYT iGPU depends on PMIC I2C controller (UID 7 on non CR) */ |