Booting Benchmark Figures - analogdevicesinc/lnxdsp-adi-meta GitHub Wiki
Introduction
The following are boot benchmark results that were obtained using a logic analyzer. This was done by connecting to the SIGMA DSP (P3) port on the carrier board. The logic analyzer being used was: Logic 8CH Hobby Craft analyzer. The same is compatible with PulseView, which works on Windows and Linux.
Sigma Studio pin layouts
The following are sigma studio pin layouts for the respective boards
ADSP-SC598 sigma studio pins
| GPIO | Name of schematics | Expansion port pin | sysfs GPIO number | U-boot trace | Linux trace | Note |
|---|---|---|---|---|---|---|
| PA_14 | TWI2_SCL | 1 | 14 | Uboot used by i2c | ||
| PA_15 | TWI2_SDA | 3 | 15 | Uboot used by i2c | ||
| PA_11 | SPI1_MISO | 5 | 11 | Used by linux for spi2_quad, Free to use in uboot | ||
| PA_10 | SPI1_CLK | 7 | 10 | Used by linux for spi2_quad, Free to use in uboot | ||
| PA_13 | SPI1_SEL1B | 9 | 13 | Uboot used by i2c | ||
| PA_12 | SPI1_MOSI | 8 | 12 | Used by linux for spi2_quad, Free to use in uboot |
ADSP-SC594 sigma studio pins
| GPIO | Name of schematics | Expansion port pin | sysfs GPIO number | U-boot trace | Linux trace | Note |
|---|---|---|---|---|---|---|
| PA_14 | TWI2_SCL | 1 | 14 | Uboot used by i2c | ||
| PA_15 | TWI2_SDA | 3 | 15 | Uboot used by i2c | ||
| PA_11 | SPI1_MISO | 5 | 11 | Used by linux for spi2_quad, Free to use in uboot | ||
| PA_10 | SPI1_CLK | 7 | 10 | Used by linux for spi2_quad, Free to use in uboot | ||
| PA_13 | SPI1_SEL1B | 9 | 13 | Uboot used by i2c | ||
| PA_12 | SPI1_MOSI | 8 | 12 | Used by linux for spi2_quad, Free to use in uboot |
Linux boot benchmark results
ADSP-SC598
| PIN | Start | Stop | Time | Note |
|---|---|---|---|---|
| PA12 | Start board initialisiation | Board initialisation | 0.35 sec | |
| PA10 | Start uncompressing kernel | Stop uncompressing kernel | SC598 kernel is uncompressed uboot stage, not aligned to SC594 | |
| PA11 | Jump to Linux | Linux initializes peripherals | 11 sec | No falcon boot 3 seconds waiting for command prompt |
| PA12 | Systemd triggers GPIO in sysfs | 31 sec |
ADSP-SC594
| PIN | Start | Stop | Time | Note |
|---|---|---|---|---|
| PA12 | Start loading SPI fitImage | Stop loading SPI fitImage | 0.010 sec | |
| PA10 | Start uncompressing kernel | Stop uncompressing kernel | 4 sec | |
| PA11 | Jump to Linux | Linux initializes peripherals | 2.6 sec | |
| PA12 | Systemd triggers GPIO in sysfs | 23 sec |
ADSP-SC594 (falcon mode)
Kernel start uncompressing 4 seconds eaerlier
| PIN | Start | Stop | Time | Note |
|---|---|---|---|---|
| PA12 | Start loading SPI fitImage | Stop loading SPI fitImage | 0.010 sec | |
| PA10 | Start uncompressing kernel | Stop uncompressing kernel | ~1 sec | Cant see on the logic analyzer, maybe taking different code path |
| PA11 | Jump to Linux | Linux initializes peripherals | 2.5 sec | |
| PA12 | Systemd triggers GPIO in sysfs | 23 sec | 23 sec after kernel configures peripherals |