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Add support for 160MHz rated CPUs #3135

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Merged
merged 6 commits into from
Sep 5, 2019
Merged

Add support for 160MHz rated CPUs #3135

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a0c7023
Add support for 160MHz rated CPUs
me-no-dev Aug 26, 2019
b588aff
Use 160MHz bootloaders
me-no-dev Aug 26, 2019
37a93d4
disable boot log
me-no-dev Aug 26, 2019
968c0ef
Merge branch 'master' into non240-cpu-support
me-no-dev Aug 28, 2019
f31e6e3
Revert Bootloaders
me-no-dev Sep 5, 2019
03e361f
Merge branch 'master' into non240-cpu-support
me-no-dev Sep 5, 2019
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10 changes: 10 additions & 0 deletions cores/esp32/esp32-hal-cpu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,7 @@
#include "soc/rtc_cntl_reg.h"
#include "rom/rtc.h"
#include "soc/apb_ctrl_reg.h"
#include "soc/efuse_reg.h"
#include "esp32-hal.h"
#include "esp32-hal-cpu.h"

Expand Down Expand Up @@ -150,6 +151,15 @@ bool setCpuFrequencyMhz(uint32_t cpu_freq_mhz){
}
return false;
}
//check if cpu supports the frequency
if(cpu_freq_mhz == 240){
//Check if ESP32 is rated for a CPU frequency of 160MHz only
if (REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_RATED) &&
REG_GET_BIT(EFUSE_BLK0_RDATA3_REG, EFUSE_RD_CHIP_CPU_FREQ_LOW)) {
log_e("Can not switch to 240 MHz! Chip CPU frequency rated for 160MHz.");
cpu_freq_mhz = 160;
}
}
//Get current CPU clock configuration
rtc_clk_cpu_freq_get_config(&cconf);
//return if frequency has not changed
Expand Down