diff options
| author | Vaibhav Shankar <vaibhav.shankar@intel.com> | 2016-08-23 17:56:17 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-09-14 22:17:47 +0200 |
| commit | ef8deaffcbfb68c5b15cdc9c91607fce5734ec8b (patch) | |
| tree | f595da26856df4dc4214837f339dae53ec481d20 /src/soc/intel/apollolake/acpi.c | |
| parent | 9e81540b85c6d06c7c3c63447b92f09590f032d1 (diff) | |
soc/intel/apollolake: Add PM methods to power gate PCIe
This implements GNVS variable to store the address of PERST_0,
_ON/_OFF methods to power gate PCIe during S0ix entry, and
PERST_0 assertion/de-assertion methods.
BUG=chrome-os-partner:55877
TEST=Suspend and resume using 'echo freeze > /sys/power/state'.
System should resume with PCIE and wifi functional.
Change-Id: I9f63ca0b8a6565b6d21deaa6d3dfa34678714c19
Signed-off-by: Vaibhav Shankar <vaibhav.shankar@intel.com>
Reviewed-on: https://review.coreboot.org/16351
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/soc/intel/apollolake/acpi.c')
| -rw-r--r-- | src/soc/intel/apollolake/acpi.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/acpi.c b/src/soc/intel/apollolake/acpi.c index 1ca04fd3fe..5718d7eba0 100644 --- a/src/soc/intel/apollolake/acpi.c +++ b/src/soc/intel/apollolake/acpi.c @@ -29,6 +29,7 @@ #include <soc/nvs.h> #include <soc/pci_devs.h> #include <string.h> +#include <soc/gpio.h> #include "chip.h" #define CSTATE_RES(address_space, width, offset, address) \ @@ -175,6 +176,10 @@ static void acpi_create_gnvs(struct global_nvs_t *gnvs) /* Enable DPTF based on mainboard configuration */ gnvs->dpte = cfg->dptf_enable; + + /* Assign address of PERST_0 if GPIO is defined in devicetree */ + if (cfg->prt0_gpio != GPIO_PRT0_UDEF) + gnvs->prt0 = (uintptr_t)gpio_dwx_address(cfg->prt0_gpio); } /* Save wake source information for calculating ACPI _SWS values */ |