diff options
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/lpss.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/common/block/lpss/lpss.c | 13 |
2 files changed, 14 insertions, 2 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/lpss.h b/src/soc/intel/common/block/include/intelblocks/lpss.h index 138340df86..c6caae2675 100644 --- a/src/soc/intel/common/block/include/intelblocks/lpss.h +++ b/src/soc/intel/common/block/include/intelblocks/lpss.h @@ -30,4 +30,7 @@ void lpss_clk_update(uintptr_t base, uint32_t clk_m_val, uint32_t clk_n_val); /* Check if controller is in reset. */ bool lpss_is_controller_in_reset(uintptr_t base); +/* Read LPSS CLK register */ +uint32_t lpss_clk_read(uintptr_t base); + #endif /* SOC_INTEL_COMMON_BLOCK_LPSS_H */ diff --git a/src/soc/intel/common/block/lpss/lpss.c b/src/soc/intel/common/block/lpss/lpss.c index feacef370f..6d4fb336f3 100644 --- a/src/soc/intel/common/block/lpss/lpss.c +++ b/src/soc/intel/common/block/lpss/lpss.c @@ -65,7 +65,16 @@ void lpss_clk_update(uintptr_t base, uint32_t clk_m_val, uint32_t clk_n_val) addr += LPSS_CLOCK_CTL_REG; clk_sel = LPSS_CLOCK_DIV_N(clk_n_val) | LPSS_CLOCK_DIV_M(clk_m_val); + clk_sel |= LPSS_CNT_CLK_UPDATE | LPSS_CNT_CLOCK_EN; - write32(addr, clk_sel | LPSS_CNT_CLK_UPDATE); - write32(addr, clk_sel | LPSS_CNT_CLOCK_EN); + write32(addr, clk_sel); +} + +uint32_t lpss_clk_read(uintptr_t base) +{ + uint8_t *addr = (void *)base; + + addr += LPSS_CLOCK_CTL_REG; + + return read32(addr); } |