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Merge pull request #6279 from mjs513/main 

Added Settable Clock for MIMXRT BOARDS
This commit is contained in:
Dan Halbert 2022-04-20 08:31:41 -04:00 committed by GitHub
parent 1fcc73bc24 2e9e29bf1b
commit 4aea8049c5
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
11 changed files with 312 additions and 4 deletions
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11
locale/circuitpython.pot
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@ -1107,6 +1107,11 @@ msgstr ""
msgid "Framebuffer requires %d bytes"
msgstr ""
#: ports/mimxrt10xx/common-hal/microcontroller/Processor.c
msgid ""
"Frequency must be 24, 150, 396, 450, 528, 600, 720, 816, 912, 960 or 1008 Mhz"
msgstr ""
#: shared-bindings/pwmio/PWMOut.c
msgid "Frequency must match existing PWMOut using this timer"
msgstr ""
@ -3019,7 +3024,7 @@ msgstr ""
msgid "complex values not supported"
msgstr ""
#: extmod/moduzlib.c shared-module/zlib/DecompIO.c
#: extmod/moduzlib.c
msgid "compression header"
msgstr ""
@ -3273,6 +3278,10 @@ msgstr ""
msgid "format requires a dict"
msgstr ""
#: shared-bindings/microcontroller/Processor.c
msgid "frequency is read-only for this board"
msgstr ""
#: py/objdeque.c
msgid "full"
msgstr ""

1
ports/mimxrt10xx/boards/sparkfun_teensy_micromod/mpconfigboard.mk
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@ -8,3 +8,4 @@ CHIP_FAMILY = MIMXRT1062
FLASH = W25Q128JV
CIRCUITPY__EVE = 1
CIRCUITPY_USB_HOST = 1
CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY = 1

1
ports/mimxrt10xx/boards/teensy40/mpconfigboard.mk
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@ -7,3 +7,4 @@ CHIP_VARIANT = MIMXRT1062DVJ6A
CHIP_FAMILY = MIMXRT1062
FLASH = W25Q16JV
CIRCUITPY__EVE = 1
CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY = 1

1
ports/mimxrt10xx/boards/teensy41/mpconfigboard.mk
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@ -8,3 +8,4 @@ CHIP_FAMILY = MIMXRT1062
FLASH = W25Q64JV
CIRCUITPY__EVE = 1
CIRCUITPY_USB_HOST = 1
CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY = 1

14
ports/mimxrt10xx/common-hal/microcontroller/Processor.c
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@ -27,6 +27,8 @@
#include <math.h>
#include "py/runtime.h"
#include "common-hal/microcontroller/Processor.h"
#include "shared-bindings/microcontroller/Processor.h"
#include "shared-bindings/microcontroller/ResetReason.h"
@ -50,6 +52,18 @@ float common_hal_mcu_processor_get_temperature(void) {
return temp;
}
uint32_t common_hal_mcu_processor_set_frequency(mcu_processor_obj_t *self,
uint32_t frequency) {
uint32_t freq = frequency / 1000000;
if (freq != 24 && freq != 150 && freq != 396 && freq != 450 && freq != 528 && freq != 600 &&
freq != 720 && freq != 816 && freq != 912 && freq != 960 && freq != 1008) {
mp_raise_ValueError(translate("Frequency must be 24, 150, 396, 450, 528, 600, 720, 816, 912, 960 or 1008 Mhz"));
}
SystemCoreClock = setarmclock(frequency);
return SystemCoreClock;
}
float common_hal_mcu_processor_get_voltage(void) {
return NAN;
}

3
ports/mimxrt10xx/common-hal/microcontroller/Processor.h
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@ -31,10 +31,11 @@
#define COMMON_HAL_MCU_PROCESSOR_UID_LENGTH 16
#include "py/obj.h"
#include "clocks.h"
typedef struct {
mp_obj_base_t base;
// Stores no state currently.
uint32_t frequency;
} mcu_processor_obj_t;
#endif // MICROPY_INCLUDED_MIMXRT10XX_COMMON_HAL_MICROCONTROLLER_PROCESSOR_H

255
ports/mimxrt10xx/peripherals/mimxrt10xx/MIMXRT1062/clocks.c
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@ -34,6 +34,7 @@
#include "fsl_clock.h"
#include "fsl_iomuxc.h"
#include "fsl_device_registers.h"
#include "clocks.h"
@ -335,3 +336,257 @@ void clocks_init(void) {
CLOCK_EnableClock(kCLOCK_Iomuxc);
}
/* clockspeed.c
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 PJRC.COM, LLC
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
// Note setarmclock is a port from Teensyduino for the Teensy 4.x written by Paul Stroffgren,
// A brief explanation of F_CPU_ACTUAL vs F_CPU
// https://forum.pjrc.com/threads/57236?p=212642&viewfull=1#post212642
volatile uint32_t F_CPU_ACTUAL = 396000000;
volatile uint32_t F_BUS_ACTUAL = 132000000;
// Define these to increase the voltage when attempting overclocking
// The frequency step is how quickly to increase voltage per frequency
// The datasheet says 1600 is the absolute maximum voltage. The hardware
// can actually create up to 1575. But 1300 is the recommended limit.
// (earlier versions of the datasheet said 1300 was the absolute max)
#define OVERCLOCK_STEPSIZE 28000000
#define OVERCLOCK_MAX_VOLT 1575
#define DCDC_REG3 0x40080012
#define DCDC_REG0 0x40080000
#define DCDC_REG0_STS_DC_OK_L ((uint32_t)(1 << 31))
#define CCM_ANALOG_PLL_USB1_ENABLE_L ((uint32_t)(1 << 13))
#define CCM_ANALOG_PLL_USB1_POWER_L ((uint32_t)(1 << 12))
#define CCM_ANALOG_PLL_USB1_EN_USB_CLKS_L ((uint32_t)(1 << 6))
#define CCM_ANALOG_PLL_USB1_LOCK_L ((uint32_t)(1 << 31))
#define CCM_CCGR6_DCDC(n) ((uint32_t)(((n) & 0x03) << 6))
#define CCM_ANALOG_PLL_ARM_LOCK_L ((uint32_t)(1 << 31))
#define CCM_ANALOG_PLL_ARM_BYPASS_L ((uint32_t)(1 << 16))
#define CCM_ANALOG_PLL_ARM_ENABLE_L ((uint32_t)(1 << 13))
#define CCM_ANALOG_PLL_ARM_POWERDOWN_L ((uint32_t)(1 << 12))
#define CCM_CDHIPR_ARM_PODF_BUSY_L ((uint32_t)(1 << 16))
#define CCM_CDHIPR_AHB_PODF_BUSY_L ((uint32_t)(1 << 1))
#define CCM_CDHIPR_PERIPH_CLK_SEL_BUSY_L ((uint32_t)(1 << 5))
#define CCM_CBCDR_PERIPH_CLK_SEL_L ((uint32_t)(1 << 25))
#define CCM_CCGR_OFF 0
#define CCM_CCGR_ON_RUNONLY 1
#define CCM_CCGR_ON 3
/* Teensyduino Core Library - clockspeed.c
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 PJRC.COM, LLC.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
// uint32_t set_arm_clock(uint32_t frequency);
// stuff needing wait handshake:
// CCM_CACRR ARM_PODF
// CCM_CBCDR PERIPH_CLK_SEL
// CCM_CBCMR PERIPH2_CLK_SEL
// CCM_CBCDR AHB_PODF
// CCM_CBCDR SEMC_PODF
uint32_t setarmclock(uint32_t frequency) {
uint32_t cbcdr = CCM->CBCDR; // pg 1021
uint32_t cbcmr = CCM->CBCMR; // pg 1023
uint32_t dcdc = DCDC->REG3;
// compute required voltage
uint32_t voltage = 1150; // default = 1.15V
if (frequency > 528000000) {
voltage = 1250; // 1.25V
#if defined(OVERCLOCK_STEPSIZE) && defined(OVERCLOCK_MAX_VOLT)
if (frequency > 600000000) {
voltage += ((frequency - 600000000) / OVERCLOCK_STEPSIZE) * 25;
if (voltage > OVERCLOCK_MAX_VOLT) {
voltage = OVERCLOCK_MAX_VOLT;
}
}
#endif
} else if (frequency <= 24000000) {
voltage = 950; // 0.95
}
// if voltage needs to increase, do it before switch clock speed
CCM->CCGR6 |= CCM_CCGR6_DCDC(CCM_CCGR_ON);
if ((dcdc & ((uint32_t)(0x1F << 0))) < ((uint32_t)(((voltage - 800) / 25) & 0x1F) << 0)) {
dcdc &= ~((uint32_t)(0x1F << 0));
dcdc |= ((uint32_t)(((voltage - 800) / 25) & 0x1F) << 0);
DCDC->REG3 = dcdc;
while (!(DCDC->REG0 & DCDC_REG0_STS_DC_OK_L)) {
; // wait voltage settling
}
}
if (!(cbcdr & CCM_CBCDR_PERIPH_CLK_SEL_L)) {
const uint32_t need1s = CCM_ANALOG_PLL_USB1_ENABLE_L | CCM_ANALOG_PLL_USB1_POWER_L |
CCM_ANALOG_PLL_USB1_LOCK_L | CCM_ANALOG_PLL_USB1_EN_USB_CLKS_L;
uint32_t sel, div;
if ((CCM_ANALOG->PLL_USB1 & need1s) == need1s) {
sel = 0;
div = 3; // divide down to 120 MHz, so IPG is ok even if IPG_PODF=0
} else {
sel = 1;
div = 0;
}
if ((cbcdr & ((uint32_t)(0x07 << 27))) != CCM_CBCDR_PERIPH_CLK2_PODF(div)) {
// PERIPH_CLK2 divider needs to be changed
cbcdr &= ~((uint32_t)(0x07 << 27));
cbcdr |= CCM_CBCDR_PERIPH_CLK2_PODF(div);
CCM->CBCDR = cbcdr;
}
if ((cbcmr & ((uint32_t)(0x03 << 12))) != CCM_CBCMR_PERIPH_CLK2_SEL(sel)) {
// PERIPH_CLK2 source select needs to be changed
cbcmr &= ~((uint32_t)(0x03 << 12));
cbcmr |= CCM_CBCMR_PERIPH_CLK2_SEL(sel);
CCM->CBCMR = cbcmr;
while (CCM->CDHIPR & ((uint32_t)(1 << 3))) {
; // wait
}
}
// switch over to PERIPH_CLK2
cbcdr |= ((uint32_t)(1 << 25));
CCM->CBCDR = cbcdr;
while (CCM->CDHIPR & ((uint32_t)(1 << 5))) {
; // wait
}
}
// TODO: check if PLL2 running, can 352, 396 or 528 can work? (no need for ARM PLL)
// DIV_SELECT: 54-108 = official range 648 to 1296 in 12 MHz steps
uint32_t div_arm = 1;
uint32_t div_ahb = 1;
while (frequency * div_arm * div_ahb < 648000000) {
if (div_arm < 8) {
div_arm = div_arm + 1;
} else {
if (div_ahb < 5) {
div_ahb = div_ahb + 1;
div_arm = 1;
} else {
break;
}
}
}
uint32_t mult = (frequency * div_arm * div_ahb + 6000000) / 12000000;
if (mult > 108) {
mult = 108;
}
if (mult < 54) {
mult = 54;
}
frequency = mult * 12000000 / div_arm / div_ahb;
const uint32_t arm_pll_mask = CCM_ANALOG_PLL_ARM_LOCK_L | CCM_ANALOG_PLL_ARM_BYPASS_L |
CCM_ANALOG_PLL_ARM_ENABLE_L | CCM_ANALOG_PLL_ARM_POWERDOWN_L |
CCM_ANALOG_PLL_ARM_DIV_SELECT_MASK;
if ((CCM_ANALOG->PLL_ARM & arm_pll_mask) != (CCM_ANALOG_PLL_ARM_LOCK_L
| CCM_ANALOG_PLL_ARM_ENABLE_L | CCM_ANALOG_PLL_ARM_DIV_SELECT(mult))) {
// printf("ARM PLL needs reconfigure\n");
CCM_ANALOG->PLL_ARM = CCM_ANALOG_PLL_ARM_POWERDOWN_L;
// TODO: delay needed?
CCM_ANALOG->PLL_ARM = CCM_ANALOG_PLL_ARM_ENABLE_L
| CCM_ANALOG_PLL_ARM_DIV_SELECT(mult);
while (!(CCM_ANALOG->PLL_ARM & CCM_ANALOG_PLL_ARM_LOCK_L)) {
; // wait for lock
}
}
if ((CCM->CACRR & ((uint32_t)(0x07 << 0))) != (div_arm - 1)) {
CCM->CACRR = CCM_CACRR_ARM_PODF(div_arm - 1);
while (CCM->CDHIPR & CCM_CDHIPR_ARM_PODF_BUSY_L) {
; // wait
}
}
if ((cbcdr & ((uint32_t)(0x07 << 10))) != CCM_CBCDR_AHB_PODF(div_ahb - 1)) {
cbcdr &= ~((uint32_t)(0x07 << 10));
cbcdr |= CCM_CBCDR_AHB_PODF(div_ahb - 1);
CCM->CBCDR = cbcdr;
while (CCM->CDHIPR & CCM_CDHIPR_AHB_PODF_BUSY_L) {
; // wait
}
}
uint32_t div_ipg = (frequency + 149999999) / 150000000;
if (div_ipg > 4) {
div_ipg = 4;
}
if ((cbcdr & ((uint32_t)(0x03 << 8))) != (CCM_CBCDR_IPG_PODF(div_ipg - 1))) {
cbcdr &= ~((uint32_t)(0x03 << 8));
cbcdr |= CCM_CBCDR_IPG_PODF(div_ipg - 1);
// TODO: how to safely change IPG_PODF ??
CCM->CBCDR = cbcdr;
}
// cbcdr &= ~CCM_CBCDR_PERIPH_CLK_SEL;
// CCM_CBCDR = cbcdr; // why does this not work at 24 MHz?
CCM->CBCDR &= ~((uint32_t)(1 << 25));
while (CCM->CDHIPR & CCM_CDHIPR_PERIPH_CLK_SEL_BUSY_L) {
; // wait
}
F_CPU_ACTUAL = frequency;
F_BUS_ACTUAL = frequency / div_ipg;
// scale_cpu_cycles_to_microseconds = 0xFFFFFFFFu / (uint32_t)(frequency / 1000000u);
// if voltage needs to decrease, do it after switch clock speed
if ((dcdc & ((uint32_t)(0x1F << 0))) > ((uint32_t)(((voltage - 800) / 25) & 0x1F) << 0)) {
dcdc &= ~((uint32_t)(0x1F << 0));
dcdc |= ((uint32_t)(0x1F << 0));
DCDC->REG3 = dcdc;
while (!(DCDC->REG0 & DCDC_REG0_STS_DC_OK_L)) {
; // wait voltage settling
}
}
return frequency;
}

1
ports/mimxrt10xx/peripherals/mimxrt10xx/clocks.h
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@ -27,3 +27,4 @@
extern uint32_t SystemCoreClock;
void clocks_init(void);
uint32_t setarmclock(uint32_t frequency);

3
py/circuitpy_mpconfig.mk
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@ -346,6 +346,9 @@ CFLAGS += -DCIRCUITPY_SDIOIO=$(CIRCUITPY_SDIOIO)
CIRCUITPY_SERIAL_BLE ?= 0
CFLAGS += -DCIRCUITPY_SERIAL_BLE=$(CIRCUITPY_SERIAL_BLE)
CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY?= 0
CFLAGS += -DCIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY=$(CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY)
CIRCUITPY_SHARPDISPLAY ?= $(CIRCUITPY_FRAMEBUFFERIO)
CFLAGS += -DCIRCUITPY_SHARPDISPLAY=$(CIRCUITPY_SHARPDISPLAY)

25
shared-bindings/microcontroller/Processor.c
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@ -30,9 +30,16 @@
#include <math.h>
#include <stdint.h>
#include "py/objproperty.h"
#include "shared-bindings/util.h"
#include "shared/runtime/buffer_helper.h"
#include "shared/runtime/context_manager_helpers.h"
#include "py/mperrno.h"
#include "py/objtype.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "supervisor/shared/translate.h"
//| class Processor:
//| """Microcontroller CPU information and control
@ -61,6 +68,20 @@
//| frequency: int
//| """The CPU operating frequency in Hertz. (read-only)"""
//|
STATIC mp_obj_t mcu_processor_set_frequency(mp_obj_t self, mp_obj_t freq) {
#if CIRCUITPY_SETTABLE_PROCESSOR_FREQUENCY
uint32_t value_of_freq = (uint32_t)mp_arg_validate_int_min(mp_obj_get_int(freq), 0, MP_QSTR_frequency);
common_hal_mcu_processor_set_frequency(self, value_of_freq);
#else
mp_raise_msg(&mp_type_NotImplementedError,translate("frequency is read-only for this board"));
#endif
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_2(mcu_processor_set_frequency_obj, mcu_processor_set_frequency);
STATIC mp_obj_t mcu_processor_get_frequency(mp_obj_t self) {
return mp_obj_new_int_from_uint(common_hal_mcu_processor_get_frequency());
}
@ -70,7 +91,7 @@ MP_DEFINE_CONST_FUN_OBJ_1(mcu_processor_get_frequency_obj, mcu_processor_get_fre
const mp_obj_property_t mcu_processor_frequency_obj = {
.base.type = &mp_type_property,
.proxy = {(mp_obj_t)&mcu_processor_get_frequency_obj, // getter
MP_ROM_NONE, // no setter
(mp_obj_t)&mcu_processor_set_frequency_obj, // setter
MP_ROM_NONE, // no deleter
},
};

1
shared-bindings/microcontroller/Processor.h
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@ -39,5 +39,6 @@ mcu_reset_reason_t common_hal_mcu_processor_get_reset_reason(void);
float common_hal_mcu_processor_get_temperature(void);
void common_hal_mcu_processor_get_uid(uint8_t raw_id[]);
float common_hal_mcu_processor_get_voltage(void);
uint32_t common_hal_mcu_processor_set_frequency(mcu_processor_obj_t *self, uint32_t frequency);
#endif // MICROPY_INCLUDED_SHARED_BINDINGS_MICROCONTROLLER_PROCESSOR_H