diff options
| author | Surendranath Gurivireddy <surendranath.r.gurivireddy@intel.com> | 2019-10-31 15:45:39 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-27 13:50:14 +0000 |
| commit | d367503147125210fbc09fa43628d233840f2c65 (patch) | |
| tree | 35dfbcf5eee97f09d7f51b37bd2e0be351effc8a /src/soc | |
| parent | b0f15f0f86b13257fdbf3ce2c2c651c40116994c (diff) | |
| download | coreboot-d367503147125210fbc09fa43628d233840f2c65.tar.xz | |
soc/intel/cannonlake: Disable USB2 PHY Power gating
Workaround to disable USB2 PHY power gating to fix issue seen when
Apple 87W USB-C charger is connected in S0ix state on WHL platforms
(based on Intel's recommendation). Issue is seen on CML platforms also.
So, disable power gating for Drallion too.
Add devicetree entry to set the flag to disable USB2 PHY power gating
for different CNL PCH based platforms
BUG=b:133775942
TEST=Connect Apple 87W USB-C charger when the system is in sleep and check if
the system wakes up after that
Signed-off-by: Surendranath Gurivireddy <surendranath.r.gurivireddy@intel.com>
Change-Id: I95909c73de758fccc7f616a330c1e1f0667e8c25
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36519
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/cannonlake/chip.h | 2 | ||||
| -rw-r--r-- | src/soc/intel/cannonlake/fsp_params.c | 3 |
2 files changed, 5 insertions, 0 deletions
diff --git a/src/soc/intel/cannonlake/chip.h b/src/soc/intel/cannonlake/chip.h index 507290f504..f08fd0a95e 100644 --- a/src/soc/intel/cannonlake/chip.h +++ b/src/soc/intel/cannonlake/chip.h @@ -130,6 +130,8 @@ struct soc_intel_cannonlake_config { uint16_t usb2_wake_enable_bitmap; /* Wake Enable Bitmap for USB3 ports */ uint16_t usb3_wake_enable_bitmap; + /* USB2 PHY power gating */ + uint8_t PchUsb2PhySusPgDisable; /* SATA related */ enum { diff --git a/src/soc/intel/cannonlake/fsp_params.c b/src/soc/intel/cannonlake/fsp_params.c index 0713ef4604..dfc7e22522 100644 --- a/src/soc/intel/cannonlake/fsp_params.c +++ b/src/soc/intel/cannonlake/fsp_params.c @@ -273,6 +273,9 @@ void platform_fsp_silicon_init_params_cb(FSPS_UPD *supd) params->Usb2AfePehalfbit[i] = config->usb2_ports[i].pre_emp_bit; } + if (config->PchUsb2PhySusPgDisable) + params->PchUsb2PhySusPgEnable = 0; + for (i = 0; i < ARRAY_SIZE(config->usb3_ports); i++) { params->PortUsb30Enable[i] = config->usb3_ports[i].enable; params->Usb3OverCurrentPin[i] = config->usb3_ports[i].ocpin; |