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esp_flash: use divider rather than hard-coded freq in init code

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Michael (XIAO Xufeng) 2020-10-22 12:27:40 +08:00
parent 971cbbb7f3
commit ee40f02afc
1 changed files with 21 additions and 22 deletions
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43
components/hal/spi_flash_hal.c
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@ -26,29 +26,33 @@
static const char TAG[] = "FLASH_HAL";
typedef struct {
int freq;
int div;
spi_flash_ll_clock_reg_t clock_reg_val;
} spi_flash_hal_clock_config_t;
static const spi_flash_hal_clock_config_t spi_flash_clk_cfg_reg[ESP_FLASH_SPEED_MAX] = {
{5e6, SPI_FLASH_LL_CLKREG_VAL_5MHZ},
{10e6, SPI_FLASH_LL_CLKREG_VAL_10MHZ},
{20e6, SPI_FLASH_LL_CLKREG_VAL_20MHZ},
{26e6, SPI_FLASH_LL_CLKREG_VAL_26MHZ},
{40e6, SPI_FLASH_LL_CLKREG_VAL_40MHZ},
{80e6, SPI_FLASH_LL_CLKREG_VAL_80MHZ},
{16, SPI_FLASH_LL_CLKREG_VAL_5MHZ},
{8, SPI_FLASH_LL_CLKREG_VAL_10MHZ},
{4, SPI_FLASH_LL_CLKREG_VAL_20MHZ},
{3, SPI_FLASH_LL_CLKREG_VAL_26MHZ},
{2, SPI_FLASH_LL_CLKREG_VAL_40MHZ},
{1, SPI_FLASH_LL_CLKREG_VAL_80MHZ},
};
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
static const spi_flash_hal_clock_config_t spi_flash_gpspi_clk_cfg_reg[ESP_FLASH_SPEED_MAX] = {
{5e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_5MHZ}},
{10e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_10MHZ}},
{20e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_20MHZ}},
{26e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_26MHZ}},
{40e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_40MHZ}},
{80e6, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_80MHZ}},
{16, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_5MHZ}},
{8, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_10MHZ}},
{4, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_20MHZ}},
{3, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_26MHZ}},
{2, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_40MHZ}},
{1, {.gpspi=GPSPI_FLASH_LL_CLKREG_VAL_80MHZ}},
};
#else
#define spi_flash_gpspi_clk_cfg_reg spi_flash_clk_cfg_reg
#endif
static inline int get_dummy_n(bool gpio_is_used, int input_delay_ns, int eff_clk)
@ -76,20 +80,15 @@ esp_err_t spi_flash_hal_init(spi_flash_hal_context_t *data_out, const spi_flash_
return ESP_ERR_INVALID_ARG;
}
spi_flash_hal_clock_config_t clock_cfg = spi_flash_clk_cfg_reg[cfg->speed];
#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
if (cfg->host_id > SPI_HOST) {
clock_cfg = spi_flash_gpspi_clk_cfg_reg[cfg->speed];
}
#endif
bool gpspi = (cfg->host_id > SPI_HOST);
const spi_flash_hal_clock_config_t *clock_cfg = gpspi? &spi_flash_gpspi_clk_cfg_reg[cfg->speed]: &spi_flash_clk_cfg_reg[cfg->speed];
*data_out = (spi_flash_hal_context_t) {
.inst = data_out->inst, // Keeps the function pointer table
.spi = spi_flash_ll_get_hw(cfg->host_id),
.cs_num = cfg->cs_num,
.extra_dummy = get_dummy_n(!cfg->iomux, cfg->input_delay_ns, clock_cfg.freq),
.clock_conf = clock_cfg.clock_reg_val,
.extra_dummy = get_dummy_n(!cfg->iomux, cfg->input_delay_ns, APB_CLK_FREQ/clock_cfg->div),
.clock_conf = clock_cfg->clock_reg_val,
.cs_hold = cfg->cs_hold,
};