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256 lines
12 KiB
C
256 lines
12 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include "esp_flash_partitions.h"
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#include "esp32s3/rom/spi_flash.h"
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#include "esp32s3/rom/opi_flash.h"
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#include "mspi_timing_tuning_configs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SPI_TIMING_CONFIG_NUM_DEFAULT 20 //This should be larger than the max available timing config num
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#define SPI_TIMING_TEST_DATA_LEN 64
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#define SPI_TIMING_PSRAM_TEST_DATA_ADDR 0
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#define SPI_TIMING_FLASH_TEST_DATA_ADDR ESP_BOOTLOADER_OFFSET
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/**
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* @note BACKGOURND:
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*
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* The SPI FLASH module clock and SPI PSRAM module clock is divided from the SPI core clock, core clock is from system clock:
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*
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* PLL ----| |---- FLASH Module Clock
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* XTAL ----|----> Core Clock ---->|
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* RTC8M ----| |---- PSRAM Module Clock
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*
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*
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* DDR stands for double data rate, MSPI samples at both posedge and negedge. So the real spped will be doubled.
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* Speed from high to low: 120M DDR > 80M DDR > 120 SDR > 80M SDR > ...
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*
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* Module with speed lower than 120M SDR doesn't need to be tuned
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*
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* @note LIMITATION:
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* How to determine the core clock on 728. There are 2 limitations.
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*
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* 1. MSPI FLASH and PSRAM share the core clock register. Therefore:
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* SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ == SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ
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*
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* 2. DDR mode requires the core clock divider (core_clk / div = module_clk) to be power of 2.
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*/
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//--------------------------------------FLASH Sampling Mode --------------------------------------//
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#define SPI_TIMING_FLASH_DTR_MODE CONFIG_ESPTOOLPY_FLASH_SAMPLE_MODE_DTR
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#define SPI_TIMING_FLASH_STR_MODE CONFIG_ESPTOOLPY_FLASH_SAMPLE_MODE_STR
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//--------------------------------------FLASH Module Clock --------------------------------------//
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#if CONFIG_ESPTOOLPY_FLASHFREQ_20M
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#define SPI_TIMING_FLASH_MODULE_CLOCK 20
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#elif CONFIG_ESPTOOLPY_FLASHFREQ_40M
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#define SPI_TIMING_FLASH_MODULE_CLOCK 40
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#elif CONFIG_ESPTOOLPY_FLASHFREQ_80M
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#define SPI_TIMING_FLASH_MODULE_CLOCK 80
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#else //CONFIG_ESPTOOLPY_FLASHFREQ_120M
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#define SPI_TIMING_FLASH_MODULE_CLOCK 120
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#endif
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//------------------------------------FLASH Needs Tuning or not-------------------------------------//
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#if SPI_TIMING_FLASH_DTR_MODE
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#define SPI_TIMING_FLASH_NEEDS_TUNING (SPI_TIMING_FLASH_MODULE_CLOCK > 40)
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#elif SPI_TIMING_FLASH_STR_MODE
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#define SPI_TIMING_FLASH_NEEDS_TUNING (SPI_TIMING_FLASH_MODULE_CLOCK > 80)
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#endif
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//--------------------------------------PSRAM Sampling Mode --------------------------------------//
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#define SPI_TIMING_PSRAM_DTR_MODE CONFIG_SPIRAM_MODE_OCT
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#define SPI_TIMING_PSRAM_STR_MODE !CONFIG_SPIRAM_MODE_OCT
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//--------------------------------------PSRAM Module Clock --------------------------------------//
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#if CONFIG_ESP32S3_SPIRAM_SUPPORT
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#if CONFIG_SPIRAM_SPEED_40M
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#define SPI_TIMING_PSRAM_MODULE_CLOCK 40
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#elif CONFIG_SPIRAM_SPEED_80M
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#define SPI_TIMING_PSRAM_MODULE_CLOCK 80
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#else //CONFIG_SPIRAM_SPEED_120M
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#define SPI_TIMING_PSRAM_MODULE_CLOCK 120
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#endif
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#else //Disable PSRAM
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#define SPI_TIMING_PSRAM_MODULE_CLOCK 10 //Define this to 10MHz, because we rely on `SPI_TIMING_PSRAM_MODULE_CLOCK` macro for calculation and check below, see `Determine the Core Clock` chapter
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#endif
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//------------------------------------PSRAM Needs Tuning or not-------------------------------------//
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#if SPI_TIMING_PSRAM_DTR_MODE
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#define SPI_TIMING_PSRAM_NEEDS_TUNING (SPI_TIMING_PSRAM_MODULE_CLOCK > 40)
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#elif SPI_TIMING_PSRAM_STR_MODE
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#define SPI_TIMING_PSRAM_NEEDS_TUNING (SPI_TIMING_PSRAM_MODULE_CLOCK > 80)
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#endif
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/**
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* @note Define A feasible core clock below: SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ and SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ
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*/
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/**
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* Due to MSPI core clock is used by both MSPI Flash and PSRAM clock,
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* define the STR/DTR mode here for selecting the core clock:
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* @note If either Flash or PSRAM, or both of them are set to DTR mode, then we use DIV 2
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*/
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#if (SPI_TIMING_FLASH_DTR_MODE || SPI_TIMING_PSRAM_DTR_MODE)
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#define SPI_TIMING_CORE_CLOCK_DIV 2
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#else //#if (SPI_TIMING_FLASH_STR_MODE && (SPI_TIMING_PSRAM_STR_MODE || !CONFIG_ESP32S3_SPIRAM_SUPPORT))
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#define SPI_TIMING_CORE_CLOCK_DIV 1
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#endif
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///////////////////////////////////// FLASH CORE CLOCK /////////////////////////////////////
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//FLASH 80M DTR
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#if SPI_TIMING_FLASH_DTR_MODE && CONFIG_ESPTOOLPY_FLASHFREQ_80M
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#define SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ 160
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#endif
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//FLASH 120M DTR
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#if SPI_TIMING_FLASH_DTR_MODE && CONFIG_ESPTOOLPY_FLASHFREQ_120M
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#define SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ 240
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#endif
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//FLASH 120M STR
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#if SPI_TIMING_FLASH_STR_MODE && CONFIG_ESPTOOLPY_FLASHFREQ_120M
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#if (SPI_TIMING_CORE_CLOCK_DIV == 2)
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#define SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ 240
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#elif (SPI_TIMING_CORE_CLOCK_DIV == 1)
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#define SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ 120
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#endif
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#endif //FLASH 120M STR
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///////////////////////////////////// PSRAM CORE CLOCK /////////////////////////////////////
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//PSRAM 80M DTR
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#if SPI_TIMING_PSRAM_DTR_MODE && CONFIG_SPIRAM_SPEED_80M
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#define SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ 160
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#endif
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//PSRAM 120M STR
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#if SPI_TIMING_PSRAM_STR_MODE && CONFIG_SPIRAM_SPEED_120M
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#if (SPI_TIMING_CORE_CLOCK_DIV == 2)
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#define SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ 240
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#elif (SPI_TIMING_CORE_CLOCK_DIV == 1)
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#define SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ 120
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#endif
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#endif //PSRAM 120M STR
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//------------------------------------------Determine the Core Clock-----------------------------------------------//
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/**
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* @note
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* Limitation 1:
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* On 728, MSPI FLASH and PSRAM share the core clock register. Therefore,
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* the expected CORE CLOCK frequencies should be the same.
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*/
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#if SPI_TIMING_FLASH_NEEDS_TUNING && SPI_TIMING_PSRAM_NEEDS_TUNING
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_Static_assert(SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ == SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ, "FLASH and PSRAM Mode configuration are not supported");
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#define SPI_TIMING_CORE_CLOCK_MHZ SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ
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//If only FLASH needs tuning, the core clock COULD be as FLASH expected
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#elif SPI_TIMING_FLASH_NEEDS_TUNING && !SPI_TIMING_PSRAM_NEEDS_TUNING
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_Static_assert(SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ % SPI_TIMING_PSRAM_MODULE_CLOCK == 0, "FLASH and PSRAM Mode configuration are not supported");
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#define SPI_TIMING_CORE_CLOCK_MHZ SPI_TIMING_FLASH_EXPECTED_CORE_CLK_MHZ
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//If only PSRAM needs tuning, the core clock COULD be as PSRAM expected
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#elif !SPI_TIMING_FLASH_NEEDS_TUNING && SPI_TIMING_PSRAM_NEEDS_TUNING
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_Static_assert(SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ % SPI_TIMING_FLASH_MODULE_CLOCK == 0, "FLASH and PSRAM Mode configuration are not supported");
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#define SPI_TIMING_CORE_CLOCK_MHZ SPI_TIMING_PSRAM_EXPECTED_CORE_CLK_MHZ
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#else
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#define SPI_TIMING_CORE_CLOCK_MHZ 80
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#endif
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/**
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* @note
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* Limitation 2: DDR mode requires the core clock divider (core_clk / div = module_clk) to be power of 2.
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*/
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#define CHECK_POWER_OF_2(n) ((((n) & ((~(n)) + 1))) == (n))
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#if SPI_TIMING_FLASH_DTR_MODE
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_Static_assert(CHECK_POWER_OF_2(SPI_TIMING_CORE_CLOCK_MHZ / SPI_TIMING_FLASH_MODULE_CLOCK), "FLASH and PSRAM Mode configuration are not supported");
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#endif
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#if SPI_TIMING_PSRAM_DTR_MODE
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_Static_assert(CHECK_POWER_OF_2(SPI_TIMING_CORE_CLOCK_MHZ / SPI_TIMING_PSRAM_MODULE_CLOCK), "FLASH and PSRAM Mode configuration are not supported");
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#endif
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//------------------------------------------Helper Macros to get FLASH/PSRAM tuning configs-----------------------------------------------//
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#define __GET_TUNING_CONFIG(type, core_clock, module_clock, mode) \
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(spi_timing_config_t) { .tuning_config_table = MSPI_TIMING_##type##_CONFIG_TABLE_CORE_CLK_##core_clock##M_MODULE_CLK_##module_clock##M_##mode, \
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.available_config_num = MSPI_TIMING_##type##_CONFIG_NUM_CORE_CLK_##core_clock##M_MODULE_CLK_##module_clock##M_##mode, \
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.default_config_id = MSPI_TIMING_##type##_DEFAULT_CONFIG_ID_CORE_CLK_##core_clock##M_MODULE_CLK_##module_clock##M_##mode }
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#define _GET_TUNING_CONFIG(type, core_clock, module_clock, mode) __GET_TUNING_CONFIG(type, core_clock, module_clock, mode)
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#define SPI_TIMING_FLASH_GET_TUNING_CONFIG(core_clock_mhz, module_clock_mhz, mode) _GET_TUNING_CONFIG(FLASH, core_clock_mhz, module_clock_mhz, mode)
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#define SPI_TIMING_PSRAM_GET_TUNING_CONFIG(core_clock_mhz, module_clock_mhz, mode) _GET_TUNING_CONFIG(PSRAM, core_clock_mhz, module_clock_mhz, mode)
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/**
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* SPI timing tuning registers. The macro `SPI_TIMING_FLASH_CONFIG_TABLE` below is the corresponding register value table.
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* Upper layer rely on these 3 registers to tune the timing.
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*/
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typedef struct {
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uint8_t spi_din_mode; /*!< input signal delay mode*/
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uint8_t spi_din_num; /*!< input signal delay number */
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uint8_t extra_dummy_len; /*!< extra dummy length*/
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} spi_timing_tuning_param_t;
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typedef struct {
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spi_timing_tuning_param_t tuning_config_table[SPI_TIMING_CONFIG_NUM_DEFAULT]; //available timing tuning configs
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uint32_t available_config_num;
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uint32_t default_config_id; //If tuning fails, we use this one as default
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} spi_timing_config_t;
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/**
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* The SPI FLASH module clock and SPI PSRAM module clock is divided from the SPI core clock, core clock is from system clock:
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*
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* PLL ----| |---- FLASH Module Clock
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* XTAL ----|----> Core Clock ---->|
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* RTC8M ----| |---- PSRAM Module Clock
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*
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*/
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typedef enum {
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SPI_TIMING_CONFIG_CORE_CLOCK_80M,
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SPI_TIMING_CONFIG_CORE_CLOCK_120M,
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SPI_TIMING_CONFIG_CORE_CLOCK_160M,
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SPI_TIMING_CONFIG_CORE_CLOCK_240M
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} spi_timing_config_core_clock_t;
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spi_timing_config_core_clock_t spi_timing_config_get_core_clock(void);
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void spi_timing_config_set_core_clock(uint8_t spi_num, spi_timing_config_core_clock_t core_clock);
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void spi_timing_config_set_flash_clock(uint8_t spi_num, uint32_t freqdiv);
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void spi_timing_config_flash_set_din_mode_num(uint8_t spi_num, uint8_t din_mode, uint8_t din_num);
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void spi_timing_config_flash_set_extra_dummy(uint8_t spi_num, uint8_t extra_dummy);
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void spi_timing_config_flash_read_data(uint8_t spi_num, uint8_t *buf, uint32_t addr, uint32_t len);
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void spi_timing_config_set_psram_clock(uint8_t spi_num, uint32_t freqdiv);
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void spi_timing_config_psram_set_din_mode_num(uint8_t spi_num, uint8_t din_mode, uint8_t din_num);
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void spi_timing_config_psram_set_extra_dummy(uint8_t spi_num, uint8_t extra_dummy);
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void spi_timing_config_psram_write_data(uint8_t spi_num, uint8_t *buf, uint32_t addr, uint32_t len);
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void spi_timing_config_psram_read_data(uint8_t spi_num,uint8_t *buf, uint32_t addr, uint32_t len);
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/*-------------------------------------------------------------------------------------------------
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* SPI1 Timing Tuning APIs
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* These APIs are only used in `spi_flash_timing_tuning.c/sweep_for_success_sample_points()` for
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* configuring SPI1 timing tuning related registers to find best tuning parameter
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*-------------------------------------------------------------------------------------------------*/
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void spi_timing_config_flash_tune_din_num_mode(uint8_t din_mode, uint8_t din_num);
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void spi_timing_config_flash_tune_dummy(uint8_t extra_dummy);
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void spi_timing_config_psram_tune_din_num_mode(uint8_t din_mode, uint8_t din_num);
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void spi_timing_config_psram_tune_dummy(uint8_t extra_dummy);
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/**
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* SPI1 register info get APIs. These APIs inform `spi_flash_timing_tuning.c` (driver layer) of the SPI1 flash settings.
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* In this way, other components (e.g.: esp_flash driver) can get the info from it (`spi_flash_timing_tuning.c`).
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*/
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void spi_timing_config_get_cs_timing(uint8_t *setup_time, uint32_t *hold_time);
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uint32_t spi_timing_config_get_flash_clock_reg(void);
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#ifdef __cplusplus
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}
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#endif
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