From d367503147125210fbc09fa43628d233840f2c65 Mon Sep 17 00:00:00 2001 From: Surendranath Gurivireddy Date: Thu, 31 Oct 2019 15:45:39 -0700 Subject: 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 Change-Id: I95909c73de758fccc7f616a330c1e1f0667e8c25 Reviewed-on: https://review.coreboot.org/c/coreboot/+/36519 Reviewed-by: Duncan Laurie Reviewed-by: EricR Lai Tested-by: build bot (Jenkins) --- src/soc/intel/cannonlake/chip.h | 2 ++ src/soc/intel/cannonlake/fsp_params.c | 3 +++ 2 files changed, 5 insertions(+) (limited to 'src/soc') 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; -- cgit v1.2.3