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esp32[c3|c6|h2]: Add adjustable SPI clock speed

This commit is contained in:
Eren Terzioglu 2024-08-16 15:22:59 +02:00 committed by Xiang Xiao
parent 69a8e2697f
commit e11a53bec9
1 changed files with 11 additions and 8 deletions
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19
arch/risc-v/src/common/espressif/esp_spi.c
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@ -127,7 +127,7 @@
/* SPI default frequency (limited by clock divider) */
#define SPI_DEFAULT_FREQ (400000)
#define SPI_DEFAULT_FREQ (4000000)
/* SPI default width */
@ -500,14 +500,19 @@ static uint32_t esp_spi_setfrequency(struct spi_dev_s *dev,
return priv->timing_param->clk_src_hz;
}
priv->timing_param->expected_freq = frequency;
esp_clk_tree_src_get_freq_hz(SPI_CLK_SRC_DEFAULT,
ESP_CLK_TREE_SRC_FREQ_PRECISION_APPROX,
&priv->timing_param->clk_src_hz);
spi_hal_cal_clock_conf(priv->timing_param,
(int *)&(priv->timing_param->clk_src_hz),
&(priv->dev_cfg->timing_conf));
spi_hal_setup_device(priv->ctx, priv->dev_cfg);
priv->timing_param->expected_freq = frequency;
spiinfo("frequency=%" PRIu32 ", actual=%" PRIu32 "\n",
priv->timing_param->expected_freq,
priv->timing_param->clk_src_hz);
priv->timing_param->expected_freq, priv->timing_param->clk_src_hz);
return priv->timing_param->clk_src_hz;
}
@ -1090,14 +1095,12 @@ static void esp_spi_init(struct spi_dev_s *dev)
priv->dev_cfg->timing_conf.clock_source = SPI_CLK_SRC_DEFAULT;
esp_clk_tree_src_get_freq_hz(priv->dev_cfg->timing_conf.clock_source,
0,
ESP_CLK_TREE_SRC_FREQ_PRECISION_APPROX,
&priv->timing_param->clk_src_hz);
esp_spi_setfrequency(dev, priv->timing_param->expected_freq);
esp_spi_setbits(dev, config->width);
esp_spi_setmode(dev, priv->dev_cfg->mode);
spi_hal_setup_device(priv->ctx, priv->dev_cfg);
esp_spi_setfrequency(dev, priv->timing_param->expected_freq);
}
/****************************************************************************