bartoszek/zephyr
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

drivers: adc: esp32: Clock init

Browse Source 
Peripheral clock init.

Signed-off-by: Raffael Rostagno <raffael.rostagno@espressif.com>
This commit is contained in:
Raffael Rostagno 2025-01-16 13:53:35 -03:00 committed by Benjamin Cabé
parent f195b3528c
commit 5ee8600a59
5 changed files with 25 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/adc/adc_esp32.c
View File

@ -30,6 +30,7 @@
#include <zephyr/device.h>
#include <zephyr/drivers/adc.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/drivers/clock_control.h>
#include <zephyr/logging/log.h>
LOG_MODULE_REGISTER(adc_esp32, CONFIG_ADC_LOG_LEVEL);
@ -45,6 +46,8 @@ LOG_MODULE_REGISTER(adc_esp32, CONFIG_ADC_LOG_LEVEL);
#define ADC_DMA_BUFFER_SIZE DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED
struct adc_esp32_conf {
const struct device *clock_dev;
const clock_control_subsys_t clock_subsys;
adc_unit_t unit;
uint8_t channel_count;
#if defined(CONFIG_ADC_ESP32_DMA)
@ -588,7 +591,15 @@ static int adc_esp32_init(const struct device *dev)
{
struct adc_esp32_data *data = (struct adc_esp32_data *) dev->data;
const struct adc_esp32_conf *conf = (struct adc_esp32_conf *) dev->config;
uint32_t clock_src_hz = 0;
uint32_t clock_src_hz;
#if SOC_ADC_DIG_CTRL_SUPPORTED && !SOC_ADC_RTC_CTRL_SUPPORTED
if (!device_is_ready(conf->clock_dev)) {
return -ENODEV;
}
clock_control_on(conf->clock_dev, conf->clock_subsys);
#endif
esp_clk_tree_src_get_freq_hz(ADC_DIGI_CLK_SRC_DEFAULT, ESP_CLK_TREE_SRC_FREQ_PRECISION_CACHED, &clock_src_hz);
@ -601,6 +612,8 @@ static int adc_esp32_init(const struct device *dev)
adc_oneshot_hal_init(&data->hal, &config);
sar_periph_ctrl_adc_oneshot_power_acquire();
#if defined(CONFIG_ADC_ESP32_DMA)
if (!device_is_ready(conf->gpio_port)) {
LOG_ERR("gpio0 port not ready");
@ -673,6 +686,9 @@ static DEVICE_API(adc, api_esp32_driver_api) = {
#define ESP32_ADC_INIT(inst) \
\
static const struct adc_esp32_conf adc_esp32_conf_##inst = { \
.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(inst)), \
.clock_subsys = \
(clock_control_subsys_t)DT_INST_CLOCKS_CELL(inst, offset), \
.unit = DT_PROP(DT_DRV_INST(inst), unit) - 1, \
.channel_count = DT_PROP(DT_DRV_INST(inst), channel_count), \
ADC_ESP32_CONF_GPIO_PORT_INIT \

2
dts/riscv/espressif/esp32c3/esp32c3_common.dtsi
View File

@ -304,6 +304,7 @@
adc0: adc@60040000 {
compatible = "espressif,esp32-adc";
reg = <0x60040000 4>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <1>;
channel-count = <5>;
#io-channel-cells = <1>;
@ -313,6 +314,7 @@
adc1: adc@60040004 {
compatible = "espressif,esp32-adc";
reg = <0x60040004 4>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <2>;
channel-count = <2>;
#io-channel-cells = <1>;

2
dts/xtensa/espressif/esp32/esp32_common.dtsi
View File

@ -456,6 +456,7 @@
adc0: adc@3ff48800 {
compatible = "espressif,esp32-adc";
reg = <0x3ff48800 10>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <1>;
channel-count = <8>;
#io-channel-cells = <1>;
@ -465,6 +466,7 @@
adc1: adc@3ff48890 {
compatible = "espressif,esp32-adc";
reg = <0x3ff48890 10>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <2>;
channel-count = <10>;
#io-channel-cells = <1>;

2
dts/xtensa/espressif/esp32s2/esp32s2_common.dtsi
View File

@ -350,6 +350,7 @@
adc0: adc@3f440018 {
compatible = "espressif,esp32-adc";
reg = <0x3f440018 100>;
clocks = <&rtc ESP32_PERIPH_SARADC_MODULE>;
unit = <1>;
channel-count = <10>;
#io-channel-cells = <1>;
@ -359,6 +360,7 @@
adc1: adc@3f440028 {
compatible = "espressif,esp32-adc";
reg = <0x3f440028 100>;
clocks = <&rtc ESP32_PERIPH_SARADC_MODULE>;
unit = <2>;
channel-count = <10>;
#io-channel-cells = <1>;

2
dts/xtensa/espressif/esp32s3/esp32s3_common.dtsi
View File

@ -353,6 +353,7 @@
adc0: adc@60040000 {
compatible = "espressif,esp32-adc";
reg = <0x60040000 4>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <1>;
channel-count = <10>;
#io-channel-cells = <1>;
@ -362,6 +363,7 @@
adc1: adc@60040004 {
compatible = "espressif,esp32-adc";
reg = <0x60040004 4>;
clocks = <&rtc ESP32_SARADC_MODULE>;
unit = <2>;
channel-count = <10>;
#io-channel-cells = <1>;