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authorHans de Goede <hdegoede@redhat.com>2017-03-13 23:25:10 +0100
committerWolfram Sang <wsa@the-dreams.de>2017-03-22 09:53:48 +0100
commita3d411fb38c0472ce96aea58062db87cc9357780 (patch)
tree4c16595d6b837255a5113ab7278961e8ebca529e /drivers/i2c/Kconfig
parent41c80b8a63bccf9de96698b4eb0916e223fb6e72 (diff)
i2c: designware: Disable pm for PMIC i2c-bus even if there is no _SEM method
Cherrytrail devices use the dw i2c-bus with uid 7 to access their PMIC. Even if the i2c-bus to the PMIC is not shared with the SoC's P-Unit and i2c-designware-baytrail.c thus does not set the pm_disabled flag, we still need to disable pm so that ACPI PMIC opregions can access the PMIC during late-suspend and early-resume. This fixes errors like these blocking suspend: i2c_designware 808622C1:06: timeout waiting for bus ready ACPI Exception: AE_ERROR, Returned by Handler for [UserDefinedRegion] acpi 80860F14:02: Failed to change power state to D3hot PM: late suspend of devices failed Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/Kconfig')
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