diff options
Diffstat (limited to 'src/soc/intel/common/block/lpss/lpss.c')
| -rw-r--r-- | src/soc/intel/common/block/lpss/lpss.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/lpss/lpss.c b/src/soc/intel/common/block/lpss/lpss.c index 146fdab2ed..feacef370f 100644 --- a/src/soc/intel/common/block/lpss/lpss.c +++ b/src/soc/intel/common/block/lpss/lpss.c @@ -39,6 +39,17 @@ /* DMA Software Reset Control */ #define LPSS_DMA_RST_RELEASE (1 << 2) +bool lpss_is_controller_in_reset(uintptr_t base) +{ + uint8_t *addr = (void *)base; + uint32_t val = read32(addr + LPSS_RESET_CTL_REG); + + if (val == 0xFFFFFFFF) + return true; + + return !(val & LPSS_CNT_RST_RELEASE); +} + void lpss_reset_release(uintptr_t base) { uint8_t *addr = (void *)base; |