diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/jasperlake/finalize.c | 13 | ||||
| -rw-r--r-- | src/soc/intel/jasperlake/include/soc/pmc.h | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/soc/intel/jasperlake/finalize.c b/src/soc/intel/jasperlake/finalize.c index d879db94fc..8219f0c1d5 100644 --- a/src/soc/intel/jasperlake/finalize.c +++ b/src/soc/intel/jasperlake/finalize.c @@ -40,6 +40,8 @@ static void pch_handle_sideband(config_t *config) static void pch_finalize(void) { + uint32_t reg32; + uint8_t *pmcbase; config_t *config; /* TCO Lock down */ @@ -62,6 +64,17 @@ static void pch_finalize(void) if (config->PmTimerDisabled) pmc_disable_acpi_timer(); + pmcbase = pmc_mmio_regs(); + if (config->s0ix_enable) { + /* + * Enable USBSUSPGQDIS qualification to ensure USB2 PHY SUS is power gated + * before entering s0ix. + */ + reg32 = read32(pmcbase + CPPMVRIC3); + reg32 &= ~USBSUSPGQDIS; + write32(pmcbase + CPPMVRIC3, reg32); + } + pch_handle_sideband(config); pmc_clear_pmcon_sts(); diff --git a/src/soc/intel/jasperlake/include/soc/pmc.h b/src/soc/intel/jasperlake/include/soc/pmc.h index 34172f8691..e65e884e64 100644 --- a/src/soc/intel/jasperlake/include/soc/pmc.h +++ b/src/soc/intel/jasperlake/include/soc/pmc.h @@ -122,6 +122,9 @@ #define CPPMVRIC 0x1B1C #define XTALSDQDIS (1 << 22) +#define CPPMVRIC3 0x1E4C +#define USBSUSPGQDIS (1 << 15) + #define IRQ_REG ACTL #define SCI_IRQ_ADJUST 0 #define ACTL 0x1BD8 |