Commit graph

318 commits

Author SHA1 Message Date
Angus Gratton
e44df658d5 spiram: Fix ESP32 SPIRAM when using SPIRAM_TYPE_AUTO, disable "AUTO" for ESP32-S2
Requirement to enable for ESP32-S2 captured in IDF-912.
2019-09-04 10:53:25 +10:00
Michael (XIAO Xufeng)
43135dc348 spi: convenient LL macro 2019-09-04 10:53:25 +10:00
Michael (XIAO Xufeng)
05739798c3 soc: s2beta support 2019-09-04 10:53:25 +10:00
Angus Gratton
6990a7cd54 Merge branch 'master' into feature/esp32s2beta_update 2019-08-19 15:03:43 +10:00
Angus Gratton
367ecc2d60 Merge branch 'refactor/timerg_in_test' into 'master'
timer_group: refactoring to avoid direct register access in the ISR

See merge request espressif/esp-idf!5656
2019-08-14 15:32:16 +08:00
suda-morris
f86e82cb63 efuse: update the scheme of getting chip revision 2019-08-13 10:59:02 +08:00
Michael (XIAO Xufeng)
feea477023 timer_group: add LL functions for WDT 2019-08-09 13:46:30 +08:00
Michael (XIAO Xufeng)
c02981a99b timer_group: support interrupt LL and some utility functions in ISR 2019-08-09 13:46:30 +08:00
chenjianqiang
a97fe5615f feat(timer): refator timer group driver (partly pick) 2019-08-09 13:46:29 +08:00
Angus Gratton
04ae56806c Merge branch 'master' into feature/esp32s2beta_update 2019-08-08 15:26:58 +10:00
Angus Gratton
24d26fccde Merge branch 'master' into feature/esp32s2beta_update 2019-08-08 13:44:24 +10:00
kooho
2139ca668d Update I2S driver for esp32s2beta. 2019-08-05 16:05:16 +08:00
Anton Maklakov
afbaf74007 tools: Mass fixing of empty prototypes (for -Wstrict-prototypes) 2019-08-01 16:28:56 +07:00
kooho
f98e7bbccf Update LEDC, PCNT,Timer_Group driver for esp32s2beta. 2019-07-31 16:03:22 +08:00
suda-morris
018de8101f ethernet: can build without enable esp32 emac
Closes https://github.com/espressif/esp-idf/issues/3770
2019-07-22 21:07:02 +08:00
Tomer Shefler
97ad2bcb86 ethernet: support giving 50mhz rmii clock with both 40mhz and 26 mhz rtc xtal
Merges https://github.com/espressif/esp-idf/pull/3769
Closes https://github.com/espressif/esp-idf/pull/3704
2019-07-22 21:07:02 +08:00
suda-morris
af78311975 ethernet: malloc hal together with driver context 2019-07-22 21:07:02 +08:00
chenjianqiang
91ae40e2ff uart: multichip support 2019-07-18 15:57:00 +08:00
chenjianqiang
4cc962353c feat(uart): update uart driver for esp32s2beta 2019-07-18 15:57:00 +08:00
suda-morris
cb42c29252 ethernet: support dm9051
1. move resource allocation from xxx_init to xxx_new
2. fix enabling tx checksum insertion by mistake
3. iperf example: enlarge max arguments
4. add examples for spi-ethernet

Closes https://github.com/espressif/esp-idf/issues/3715
Closes https://github.com/espressif/esp-idf/issues/3711
2019-07-04 19:38:13 +08:00
boarchuz
b0168310db Typo correction
Merges https://github.com/espressif/esp-idf/pull/3604
2019-07-02 17:49:49 +08:00
Ivan Grokhotkov
d7d91225d3 Merge branch 'feature/refactor_etherent_driver' into 'master'
add esp_eth component

Closes IDF-324, IDF-637, and IDFGH-1139

See merge request idf/esp-idf!5111
2019-06-28 03:44:44 +08:00
Michael (XIAO Xufeng)
d6bd24ca67 esp_flash: add initialization interface for SPI devices 2019-06-27 13:27:27 +08:00
suda-morris
90c4827bd2 add esp_eth component 2019-06-26 10:19:23 +08:00
Michael (XIAO Xufeng)
17378fd4c2 spi: support new chip esp32s2beta 2019-06-23 12:17:27 +08:00
Michael (XIAO Xufeng)
9b13a04abf spi: multichip support
move hardcoded numbers, etc. into soc files.
create headers for shared types which needs to be documented.

(MINOR CHANGE)
2019-06-22 19:08:47 +08:00
Angus Gratton
bd9590502c Merge branch 'bugfix/spi_flash_remove_include_chain_in_host_drv' into 'master'
esp_flash: support C++ and improve the document

See merge request idf/esp-idf!5287
2019-06-21 13:12:09 +08:00
Angus Gratton
126b687c75 Merge branch 'refactor/vfs_uart_multichip_support' into 'master'
vfs_uart & uart: add multichip support

See merge request idf/esp-idf!5298
2019-06-20 18:31:24 +08:00
chenjianqiang
cf2ba210ef uart: multichip support 2019-06-20 11:32:22 +08:00
Michael (XIAO Xufeng)
caf121e4b6 esp_flash: break the inappropriate include chain in spi_flash_host_drv.h 2019-06-20 10:55:12 +08:00
Michael (XIAO Xufeng)
5c9dc44c49 spi: multichip support
move hardcoded numbers, etc. into soc files.
create headers for shared types which needs to be documented.

(MINOR CHANGE)
2019-06-20 10:38:52 +08:00
Darian Leung
037c079e9a esp32: Refactor backtrace and add esp_backtrace_print()
This commit refactors backtracing within the panic handler so that a common
function esp_backtrace_get_next_frame() is used iteratively to traverse a
callstack.

A esp_backtrace_print() function has also be added that allows the printing
of a backtrace at runtime. The esp_backtrace_print() function allows unity to
print the backtrace of failed test cases and jump back to the main test menu
without the need reset the chip. esp_backtrace_print() can also be used as a
debugging function by users.

- esp_stack_ptr_is_sane() moved to soc_memory_layout.h
- removed uncessary includes of "esp_debug_helpers.h"
2019-06-19 18:30:18 +08:00
suda-morris
3f7a571c90 fix errors when ci testing for esp32 2019-06-19 15:31:47 +08:00
Michael (XIAO Xufeng)
1036a091fe spi_flash: support working on differnt buses and frequency 2019-06-18 06:32:52 +00:00
Angus Gratton
ddbd09eb15 esp32/esp32s2beta: Extract common SPIRAM options into esp_commmon component 2019-06-11 13:07:37 +08:00
suda-morris
91508ca27f add esp32s2beta in soc component 2019-06-11 13:06:32 +08:00
Angus Gratton
045aaf6fb0 Merge branch 'feature/add_xxx_periph_h' into 'master'
soc: Add xxx_periph.h for all modules

Closes IDF-192

See merge request idf/esp-idf!4952
2019-06-04 13:24:14 +08:00
Wu Jian Gang
4d3762a8df clk: Fix the overflow when setting ccount
The multiplication will be overflow when using 160 or 240 MHz, this can lead the inaccuracy of log time stamp in startup.
2019-06-03 11:04:47 +00:00
Konstantin Kondrashov
399d2d2605 all: Using xxx_periph.h
Using xxx_periph.h in whole IDF instead of xxx_reg.h, xxx_struct.h, xxx_channel.h ... .

Cleaned up header files from unnecessary headers (releated to soc/... headers).
2019-06-03 14:15:08 +08:00
Roland Dobai
0ae53691ba Rename Kconfig options (components/esp32) 2019-05-21 09:09:01 +02:00
Michael (XIAO Xufeng)
9a00b7706e fix the dram low addr defined in the soc.h header 2019-04-25 17:29:48 +08:00
Michael (XIAO Xufeng)
562af8f65e global: move the soc component out of the common list
This MR removes the common dependency from every IDF components to the SOC component.

Currently, in the ``idf_functions.cmake`` script, we include the header path of SOC component by default for all components.
But for better code organization (or maybe also benifits to the compiling speed), we may remove the dependency to SOC components for most components except the driver and kernel related components.

In CMAKE, we have two kinds of header visibilities (set by include path visibility):

(Assume component A --(depends on)--> B, B is the current component)

1. public (``COMPONENT_ADD_INCLUDEDIRS``): means this path is visible to other depending components (A) (visible to A and B)
2. private (``COMPONENT_PRIV_INCLUDEDIRS``): means this path is only visible to source files inside the component (visible to B only)

and we have two kinds of depending ways:

(Assume component A --(depends on)--> B --(depends on)--> C, B is the current component)

1. public (```COMPONENT_REQUIRES```): means B can access to public include path of C. All other components rely on you (A) will also be available for the public headers. (visible to A, B)
2. private (``COMPONENT_PRIV_REQUIRES``): means B can access to public include path of C, but don't propagate this relation to other components (A). (visible to B)

1. remove the common requirement in ``idf_functions.cmake``, this makes the SOC components invisible to all other components by default.
2. if a component (for example, DRIVER) really needs the dependency to SOC, add a private dependency to SOC for it.
3. some other components that don't really depends on the SOC may still meet some errors saying "can't find header soc/...", this is because it's depended component (DRIVER) incorrectly include the header of SOC in its public headers. Moving all this kind of #include into source files, or private headers
4. Fix the include requirements for some file which miss sufficient #include directives. (Previously they include some headers by the long long long header include link)

This is a breaking change. Previous code may depends on the long include chain.
You may need to include the following headers for some files after this commit:

- soc/soc.h
- soc/soc_memory_layout.h
- driver/gpio.h
- esp_sleep.h

The major broken include chain includes:

1. esp_system.h no longer includes esp_sleep.h. The latter includes driver/gpio.h and driver/touch_pad.h.
2. ets_sys.h no longer includes soc/soc.h
3. freertos/portmacro.h no longer includes soc/soc_memory_layout.h

some peripheral headers no longer includes their hw related headers, e.g. rom/gpio.h no longer includes soc/gpio_pins.h and soc/gpio_reg.h

BREAKING CHANGE
2019-04-16 13:21:15 +08:00
Angus Gratton
f871cc5ffa Merge branch 'feat/spi_hal_support' into 'master'
spi_master: refactor and add HAL support

See merge request idf/esp-idf!4159
2019-04-15 07:57:11 +08:00
Angus Gratton
8e91677701 Merge branch 'bugfix/bootloader_flash_crypt_cnt_ff' into 'master'
flash encryption: reduce FLASH_CRYPT_CNT bit width to 7 bits

See merge request idf/esp-idf!4642
2019-04-09 08:10:06 +08:00
huub
4aac441e46 soc:Added names to anonymous register structs
For typedef volatile struct in components/soc/esp32/include/soc

Merges https://github.com/espressif/esp-idf/pull/3199
2019-04-03 03:09:44 +00:00
Angus Gratton
4b4cd7fb51 efuse/flash encryption: Reduce FLASH_CRYPT_CNT to a 7 bit efuse field
8th bit is not used by hardware.

As reported https://esp32.com/viewtopic.php?f=2&t=7800&p=40895#p40894
2019-04-03 14:07:20 +11:00
Angus Gratton
ae585b6615 Merge branch 'bugfix/external_rtc_start_fail' into 'master'
Bugfix/external rtc start fail

See merge request idf/esp-idf!4374
2019-04-02 09:42:27 +08:00
Michael (XIAO Xufeng)
af2fc96ee1 spi_master: refactor and add HAL support 2019-03-28 17:14:50 +08:00
morris
c159984264 separate rom from esp32 component to esp_rom
1. separate rom include files and linkscript to esp_rom
2. modefiy "include rom/xxx.h" to "include esp32/rom/xxx.h"
3. Forward compatible
4. update mqtt
2019-03-21 18:51:45 +08:00
Ivan Grokhotkov
106dc05903 Merge branch 'feature/specify_includes_belonging_esp32' into 'master'
move esp32 chip specific includes to esp32/xxx.h

See merge request idf/esp-idf!4534
2019-03-21 18:34:08 +08:00
maojianxin
95301c16bd Fix external start fail 2019-03-20 18:34:01 +08:00
Zhang Jun Yi
5ba87240b5 soc/rtc: Bypass touchpad current to external 32k crystal oscillator 2019-03-20 18:34:01 +08:00
morris
956c25dedd move esp32 chip specific includes to esp32/xxx.h 2019-03-18 17:14:05 +08:00
Angus Gratton
2dd3344342 heap: Add integer overflow checks on MALLOC_CAP_32BIT & MALLOC_CAP_EXEC 2019-03-18 01:41:58 +00:00
Konstantin Kondrashov
d82023bf06 soc: Add support efuse 2019-02-28 07:31:29 +00:00
Ivan Grokhotkov
8cc6226051 soc: define named constants for DPORT_CPUPERIOD_SEL values 2019-02-26 17:07:59 +08:00
Ivan Grokhotkov
dda0208614 soc/rtc_clk: don’t clear DPORT_CPUPERIOD_SEL when switching to XTAL
This is not necessary since RTC_CNTL_SOC_CLK_SEL is set before this.
2019-02-26 17:02:34 +08:00
Angus Gratton
b966ef9fcd Merge branch 'bugfix/update_ledc_register_and_fix_fade_scale' into 'master'
Bugfix (ledc):  Fixed ledc fade scale  bug

See merge request idf/esp-idf!4109
2019-02-26 11:46:28 +08:00
Ivan Grokhotkov
dc133f9fc4 Revert "Merge branch 'bugfix/external_rtc_start_fail' into 'master'"
This reverts merge request !2441
2019-02-19 12:39:47 +08:00
Angus Gratton
6538acc94f Merge branch 'bugfix/wdt_compability_app_with_old_bootloader' into 'master'
esp32: Fix wdt settings in esp_restart_noos

See merge request idf/esp-idf!4098
2019-02-19 10:42:33 +08:00
maojianxin
0676941332 soc/rtc: fix RTC_TOUCH_TRIG_EN or RTC_ULP_TRIG_EN should keep RTC_PERIPH power on 2019-02-13 10:30:37 +08:00
Zhang Jun Yi
c5b4512a27 soc/rtc: Bypass touchpad current to external 32k crystal oscillator 2019-02-13 10:15:45 +08:00
Ivan Grokhotkov
2eabed161a Merge branch 'feature/merge_multiple_github_prs' into 'master'
Multiple Github PRs

See merge request idf/esp-idf!4146
2019-01-24 15:14:47 +08:00
Pieter du Preez
496bfe3842 Initialized some uninitialized variables in rtc_clk.c and ringbuf.c.
The following 2 compiler warnings are only reproducible when setting:
   OPTIMIZATION_FLAGS = -Ofast

esp-idf/components/soc/esp32/rtc_clk.c:
In function 'rtc_clk_cpu_freq_get':
esp-idf/components/soc/esp32/rtc_clk.c:506:12:
error: 'freq' may be used uninitialized in this function
[-Werror=maybe-uninitialized]
	return freq;

esp-idf/components/esp_ringbuf/ringbuf.c:
In function 'xRingbufferReceiveSplitFromISR':
esp-idf/components/esp_ringbuf/ringbuf.c:934:26:
error: 'pvTempTailItem' may be used uninitialized in this function
[-Werror=maybe-uninitialized]
	*ppvTailItem = pvTempTailItem;

Closes https://github.com/espressif/esp-idf/pull/2878
2019-01-23 16:47:23 +05:30
Wangjialin
78bea94d8a feature: add support for setting core voltage in high performance cases.
1. add definitions of EFUSE_RD_VOL_LEVEL_HP_INV in efuse_reg.h
2. modify the core voltage according to the record in efuse in high performance cases.
2019-01-22 12:13:58 +08:00
Wangjialin
d518a19d95 driver(ledc): fix ledc fade API and update the register header file
1. fix error when fading is too fast
2. fix error when setting duty and update immediately
3. update register header file to be in accord with TRM

closes https://github.com/espressif/esp-idf/issues/2903
2019-01-12 00:56:38 +08:00
Konstantin Kondrashov
82c5e648ad esp32: Fix wdt settings in esp_restart_noos
Fixed compatibility the new apps with the old bootloaders.

Closes: https://github.com/espressif/esp-idf/issues/2927
2019-01-10 20:22:26 +08:00
Ivan Grokhotkov
0cf8d1380e soc/rtc: reset another BBPLL related register
Follow-up to b21ffc8a: an additional register needs to be reset.

Ref. https://github.com/espressif/esp-idf/issues/2711
2018-12-12 12:24:48 +08:00
Ivan Grokhotkov
04c511c9b5 panic: dump some instruction memory on IllegalInstruction exception 2018-12-07 16:50:00 +08:00
Ivan Grokhotkov
b21ffc8a0c soc/rtc: reset BBPLL configuration after enabling it
A workaround to reset BBPLL configuration after light sleep. Fixes the
issue that Wi-Fi can not receive packets after waking up from light
sleep.

Ref. https://github.com/espressif/esp-idf/issues/2711
2018-12-06 14:43:24 +08:00
Angus Gratton
7f32995a4c soc: Add "#include <stdint.h>" to all register structs
Closes https://github.com/espressif/esp-idf/issues/2239

TW24912
2018-12-04 11:17:38 +11:00
kooho
da223fad4e driver(rmt): Add API get rmt channel's status.
closes https://github.com/espressif/esp-idf/issues/1175
closes https://github.com/espressif/esp-idf/issues/2599
closes https://github.com/espressif/esp-idf/issues/2452
2018-11-28 07:20:45 +00:00
Ivan Grokhotkov
964f5a91f7 bootloader, esp32: add workaround for Tensilica erratum 572
If zero-overhead loop buffer is enabled, under certain rare conditions
when executing a zero-overhead loop, the CPU may attempt to execute an invalid instruction. Work around by disabling the buffer.
2018-11-19 04:39:35 +00:00
shawwwn
288d9b75e9 rtc_clk: bugfix: incorrect divider setting in rtc_clk_cpu_freq_to_config()
Merges https://github.com/espressif/esp-idf/pull/2404
2018-11-08 15:57:10 +05:30
Konstantin Kondrashov
8bba348528 aes/sha/mpi: Bugfix a use of shared registers.
This commit resolves a blocking in esp_aes_block function.

Introduce:
The problem was in the fact that AES is switched off at the moment when he should give out the processed data. But because of the disabled, the operation can not be completed successfully, there is an infinite hang. The reason for this behavior is that the registers for controlling the inclusion of AES, SHA, MPI have shared registers and they were not protected from sharing.

Fix some related issue with shared using of AES SHA RSA accelerators.

Closes: https://github.com/espressif/esp-idf/issues/2295#issuecomment-432898137
2018-11-05 04:22:47 +00:00
Michael (XIAO Xufeng)
4132834faa test: fix the unit test fail issue under single_core config
Introduced in 97e3542947.

The previous commit frees the IRAM part when single core, but doesn't
change the memory layout functions. The unit test mallocs IRAM memory
from the heap, accidently into the new-released region, which doesn't
match the memory layout function.

This commit update the memory layout function to fix this.
2018-10-31 17:04:32 +08:00
Jiang Jiang Jian
97e3542947 Merge branch 'bugfix/release_some_memory_on_single_core_mode' into 'master'
release memory not used in single core mode

See merge request idf/esp-idf!2733
2018-10-30 15:53:31 +08:00
Michael (XIAO Xufeng)
d0361a32d7 test: fix the IRAM type conflict issue using heap_caps_malloc 2018-10-25 12:31:44 +08:00
Renz Bagaporo
cc774111bf cmake: Add support for test build 2018-10-20 12:07:24 +08:00
Ivan Grokhotkov
bd11965f6c Merge branch 'bugfix/ndebug_build' into 'master'
soc,sdmmc: fix build failures when NDEBUG is used

See merge request idf/esp-idf!3352
2018-10-19 11:55:37 +08:00
Angus Gratton
f53fef9936 Secure Boot & Flash encryption: Support 3/4 Coding Scheme
Includes esptool update to v2.6-beta1
2018-10-16 16:24:10 +11:00
Ivan Grokhotkov
a20d9287fe soc: use _EARLY versions of ESP_LOG
Some logging done in soc component may happen before logging via
stdout is possible. Use _EARLY version of log calls to make sure that
output is visible. The downside is that application does not have a
way to silence these logs. However since the soc component doesn’t
use any LOGV/LOGD/LOGI and only logs warnings and errors, this should
not impact the application.
2018-10-15 14:59:46 +08:00
Ivan Grokhotkov
ab68b9d90d soc,sdmmc: fix build failures when NDEBUG is used
Use explicit error checking instead of asserts, use SOC_LOG to print
error/warning messages where needed.
2018-10-15 14:57:12 +08:00
Ivan Grokhotkov
22b840f3df bootloader: don’t reload RTC_FAST DRAM after deep sleep
When CONFIG_ESP32_RTCDATA_IN_FAST_MEM is enabled, RTC data is placed
into RTC_FAST memory region, viewed from the data bus. However the
bootloader was missing a check that this region should not be
overwritten after deep sleep, which caused .rtc.bss segment to loose
its contents after wakeup.
2018-09-29 14:02:16 +08:00
Jack
2efd6859ed release memory not used in single core mode
1. do not start ipc task in single core mode
2. do not use APP cpu cache memory in single core mode
3. relase data used in rom by APP cpu
2018-09-25 15:13:47 +08:00
negativekelvin
8e2856b83d soc: fix CPU frequency not updated in rtc_clk_init
Add missing call to rtc_clk_cpu_freq_set_config

Merges https://github.com/espressif/esp-idf/pull/2398
2018-09-12 21:13:42 +08:00
Renz Christian Bagaporo
d9939cedd9 cmake: make main a component again 2018-09-11 09:44:12 +08:00
Konstantin Kondrashov
38098b713f esp32/sleep: Add a function to disable logging from ROM code 2018-09-04 16:03:18 +08:00
Konstantin Kondrashov
9c715d7946 bootloader_support: Fix enable rtc_wdt for resolve issue with varying supply
Eliminates the issue with the lock up in the bootloader due to a power drawdown during its operation.

Closes https://github.com/espressif/esp-idf/issues/1814
2018-09-03 05:43:01 +00:00
Ivan Grokhotkov
78fab8a0f9 sdmmc: implement partial DDR support
Works for 3.3V eMMC in 4 line mode.
Not implemented:
- DDR mode for SD cards (UHS-I) also need voltage to be switched to 1.8V.
- 8-line DDR mode for eMMC to be implemented later.
2018-08-30 13:11:54 +08:00
Mahavir Jain
f0fa66a50e rtc_wdt: fix overflow issue with setting wdt interval
Signed-off-by: Mahavir Jain <mahavir@espressif.com>
2018-08-24 18:06:39 +05:30
Ivan Grokhotkov
88d40e01b4 Merge branch 'feature/rtc_slowclk_extra_options' into 'master'
Add more RTC_SLOW_CLK options

See merge request idf/esp-idf!2984
2018-08-23 11:27:14 +08:00
Ivan Grokhotkov
902344c516 Merge branch 'bugfix/trace_mem_layout_pro_cpu' into 'master'
soc: fix trace memory region for single core mode

See merge request idf/esp-idf!3029
2018-08-22 16:51:43 +08:00
Ivan Grokhotkov
5bf3654637 soc/rtc: Force power on 8M clock if it is used to derive RTC slow clock 2018-08-22 11:33:20 +08:00
Ivan Grokhotkov
8365f0f5d2 soc/rtc: add support for external 32k oscillator
Compared to external 32k XTAL, when active oscillator is used as input,
some parameters need to be set differently.
2018-08-22 11:33:20 +08:00
Ivan Grokhotkov
e59571eece soc/rtc_clk: reduce data size by disabling CSWTCH generation
Saves about 200 bytes of DRAM at the expense of 4 bytes in IRAM.
2018-08-21 13:02:46 +08:00
Ivan Grokhotkov
db2f0f45be soc/rtc_clk: split rtc_clk_init into separate object file
rtc_clk_init and related functions don’t need to be in IRAM/DRAM.
2018-08-21 13:02:46 +08:00
Ivan Grokhotkov
bcf79e5cf2 tests: use new CPU frequency setting API 2018-08-21 13:02:46 +08:00
Ivan Grokhotkov
bec70ce298 esp32: use new CPU frequency setting API 2018-08-21 13:02:46 +08:00
Ivan Grokhotkov
2e31cce390 soc/rtc: CPU frequency settings refactoring
Previous APIs used to set CPU frequency used CPU frequencies listed in
rtc_cpu_freq_t enumeration. This was problematic for two reasons.
First, supporting many possible frequency values obtained by dividing
XTAL frequency was hard, as every value would have to be listed in
the enumeration. Since different base XTAL frequencies are supported,
this further complicated things, since not all of these divided
frequencies would be valid for any given XTAL frequency. Second,
having to deal with enumeration values often involved switch
statements to convert between enumeration and MHz values, handle
PLL/XTAL frequencies separately, etc.

This change introduces rtc_cpu_freq_config_t structure, which contains
CPU frequency (in MHz) and information on how this frequency has to
be generated: clock source (XTAL/PLL), source frequency, clock
divider value. More fields can be added to this structure in the
future. This structure simplifies many parts of the code, since both
frequency value and frequency generation settings can be accessed in
any place in code without the need for conversions.

Additionally, this change adds setting of REF_TICK dividers to support
frequencies lower then XTAL with DFS.
2018-08-21 13:02:03 +08:00