Merge branch 'bugfix/spi_flash_cs_setup_v4.0' into 'release/v4.0'

spi_flash: fix cs line setup to make the flash driver more stable (v4.0)

See merge request espressif/esp-idf!13894

components/soc/esp32/include/hal/spi_flash_ll.h

@@ -340,3 +340,9 @@ static inline void spi_flash_ll_set_dummy(spi_dev_t *dev, uint32_t dummy_n)
     dev->user.usr_dummy = dummy_n ? 1 : 0;
     dev->user1.usr_dummy_cyclelen = dummy_n - 1;
 }
+
+static inline void spi_flash_ll_set_cs_setup(spi_dev_t *dev, uint32_t cs_setup_time)
+{
+    dev->user.cs_setup = (cs_setup_time > 0 ? 1 : 0);
+    dev->ctrl2.setup_time = cs_setup_time - 1;
+}

components/soc/src/hal/spi_flash_hal_iram.c

@@ -38,6 +38,7 @@ esp_err_t spi_flash_hal_device_config(spi_flash_host_driver_t *host)
     spi_flash_ll_reset(dev);
     spi_flash_ll_set_cs_pin(dev, drv_data->cs_num);
     spi_flash_ll_set_clock(dev, &drv_data->clock_conf);
+    spi_flash_ll_set_cs_setup(dev, 1);
 
     /*
      * workaround for the ROM: the ROM, as well as the OpenOCD, don't know the