diff options
Diffstat (limited to 'soc/mediatek/mt8188/README.md')
| -rw-r--r-- | soc/mediatek/mt8188/README.md | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/soc/mediatek/mt8188/README.md b/soc/mediatek/mt8188/README.md index bdc850b..6138626 100644 --- a/soc/mediatek/mt8188/README.md +++ b/soc/mediatek/mt8188/README.md @@ -3,6 +3,7 @@ - sspm.bin - dpm.dm - dpm.pm +- spm_firmware.bin -------------------------------------------------------------------------------- # MCUPM introduction @@ -72,3 +73,20 @@ $ strings dpm.pm | grep version ``` -------------------------------------------------------------------------------- +# SPM introduction +SPM is able to turn off more power such as DRAM self-refresh mode and 26M clock off +when system is in suspend. Also, SPM helps support Vcore DVFS feature. + +## Who uses it +Linux kernel system suspend and Vcore DVFS. + +## How to load `spm_fimware.bin` +Use CBFS to load `spm_fimware.bin` to DRAM and SPM DMA loads it from dram to SPM SRAM. + +## Return values +No return value. + +## Version +`$ strings spm_firmware.bin | grep pcm_suspend` + +-------------------------------------------------------------------------------- |