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arch/risc-v: set SCL timeout for esp_i2c.c

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Adds proper timeout settings to SCL on ESP32C3|C6|H2.

Signed-off-by: Filipe Cavalcanti <filipe.cavalcanti@espressif.com>
This commit is contained in:
Filipe Cavalcanti 2025-06-30 14:00:45 -03:00 • committed by Xiang Xiao
parent 26eb2833cc
commit 06b37fe6aa
1 changed files with 13 additions and 1 deletions
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14
arch/risc-v/src/common/espressif/esp_i2c.c
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@ -60,6 +60,7 @@
#include "soc/system_reg.h"
#include "soc/gpio_sig_map.h"
#include "soc/i2c_periph.h"
#include "esp_clk_tree.h"
#if defined(CONFIG_ESPRESSIF_ESP32H2) || defined(CONFIG_ESPRESSIF_ESP32C6)
# include "soc/pcr_reg.h"
#endif
@ -129,6 +130,10 @@
#define I2C_CLR_BUS_TIMEOUT_MS (50)
/* SCL timeout value in microseconds */
#define SCL_TIMEOUT_VAL_US (CONFIG_ESPRESSIF_I2CTIMEOMS * 1000)
/****************************************************************************
* Private Types
****************************************************************************/
@ -713,14 +718,21 @@ static void esp_i2c_sendstop(struct esp_i2c_priv_s *priv)
static void esp_i2c_init_clock(struct esp_i2c_priv_s *priv,
uint32_t bus_freq)
{
uint32_t src_clk_frequency;
if (bus_freq == priv->clk_freq)
{
return ;
}
i2c_clock_source_t src_clk = I2C_CLK_SRC_DEFAULT;
esp_clk_tree_src_get_freq_hz((soc_module_clk_t)src_clk,
ESP_CLK_TREE_SRC_FREQ_PRECISION_CACHED,
&src_clk_frequency);
i2c_hal_set_bus_timing(priv->ctx, priv->config->clk_freq,
src_clk, XTAL_CLK_FREQ);
src_clk, src_clk_frequency);
i2c_hal_master_set_scl_timeout_val(priv->ctx, SCL_TIMEOUT_VAL_US,
src_clk_frequency);
i2c_ll_update(priv->ctx->dev);
priv->clk_freq = bus_freq;
}