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dts: esp32s3: add LEDC device

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Add LEDC device for esp32s3
Update PWM LED binding
Remove invalid comment from driver source file

Signed-off-by: Lucas Tamborrino <lucas.tamborrino@espressif.com>
This commit is contained in:
Lucas Tamborrino 2023-02-23 09:06:00 -03:00 committed by Carles Cufí
parent bfdaa9ad61
commit ed0d242bb7
5 changed files with 15 additions and 5 deletions
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2
boards/xtensa/esp32s3_devkitm/doc/index.rst
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@ -98,6 +98,8 @@ Current Zephyr's ESP32-S3-DevKitM board supports the following features:
+------------+------------+-------------------------------------+
| TRNG | on-chip | entropy |
+------------+------------+-------------------------------------+
| LEDC | on-chip | pwm |
+------------+------------+-------------------------------------+
Prerequisites
-------------

1
boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.yaml
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@ -12,6 +12,7 @@ supported:
- counter
- watchdog
- entropy
- pwm
testing:
ignore_tags:
- net

1
drivers/pwm/pwm_led_esp32.c
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@ -235,7 +235,6 @@ static int pwm_led_esp32_get_cycles_per_sec(const struct device *dev,
return 0;
}
/* period_cycles is not used, set frequency on menuconfig instead. */
static int pwm_led_esp32_set_cycles(const struct device *dev, uint32_t channel_idx,
uint32_t period_cycles,
uint32_t pulse_cycles, pwm_flags_t flags)

8
dts/bindings/pwm/espressif,esp32-ledc.yaml
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@ -109,13 +109,13 @@ child-binding:
- 15
description: |
The esp32 has 8 low speed channel and 8 high speed channels.
The ESP32 has 8 low speed channel and 8 high speed channels.
The low speed channel are mapped from channel 0 to 7, and the high speed are mapped from
channel 8 to 15.
High speed channels are only available in the esp32 SoC. Esp32s2 has only 8 available
channels, and esp32c3 has 6. In these SoCs there is no differentiation between low or high
speed.
High speed channels are only available in the ESP32 SoC. ESP32S2 and ESP32S3 have 8
available channels, and ESP32C3 has 6. In these SoCs there is no differentiation between
low or high speed.
timer:
type: int

8
dts/xtensa/espressif/esp32s3.dtsi
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@ -258,5 +258,13 @@
reg = <0x6003507c 0x4>;
status = "disabled";
};
ledc0: ledc@60019000 {
compatible = "espressif,esp32-ledc";
#pwm-cells = <3>;
reg = <0x60019000 DT_SIZE_K(4)>;
clocks = <&rtc ESP32_LEDC_MODULE>;
status = "disabled";
};
};
};