5f3bba54e8
Add pwm-0 to support tests/drivers/pwm/pwm_api. Solve tests code runtime error on it8xxx2_evb: 1.If the pwm channel target frequency is < 1, then we will return an error code. 2.If the target_freq is <= 324Hz, we will configure that this pwm channel need to output in EC power saving mode. In test_pwm_cycle() case, the period is 64000, then the target_freq is 8000000 / 64000 = 125Hz and <= 324Hz, so we will switch the prescaler clock source from 8MHz to 32.768kHz. Then the target_freq is 32768 / 64000 = 0.512Hz and < 1Hz, this will return an error code. In order to get the same target_freq, we always return PWM_FREQ in pwm_it8xxx2_get_cycles_per_sec(). Signed-off-by: Ruibin Chang <Ruibin.Chang@ite.com.tw>
141 lines
2.5 KiB
Text
141 lines
2.5 KiB
Text
/*
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* Copyright (c) ITE, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*/
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/dts-v1/;
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#include <dt-bindings/gpio/gpio.h>
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#include <it8xxx2.dtsi>
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#include <it8xxx2-alts-map.dtsi>
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/ {
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model = "IT8XXX2 EV-Board";
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compatible = "riscv,it8xxx2-evb";
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aliases {
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i2c-0 = &i2c0;
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peci-0 = &peci0;
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};
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chosen {
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zephyr,console = &uart1;
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zephyr,shell-uart = &uart1;
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zephyr,bt-uart = &uart2;
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zephyr,sram = &sram0;
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zephyr,flash = &flash0;
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zephyr,flash-controller = &flashctrl;
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zephyr,code-partition = &slot0_partition;
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zephyr,keyboard-scan = &kscan0;
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};
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aliases {
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led0 = &led0;
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kscan0 = &kscan0;
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watchdog0 = &twd0;
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pwm-0 = &pwm0;
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};
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leds {
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compatible = "gpio-leds";
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led0: led_0 {
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gpios = <&gpioc 0 GPIO_ACTIVE_HIGH>;
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label = "Green LED";
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};
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};
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};
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&adc0 {
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status = "okay";
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};
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&i2c0 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&i2c1 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&i2c2 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&i2c3 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&i2c4 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&i2c5 {
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status = "okay";
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clock-frequency = <I2C_BITRATE_STANDARD>;
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};
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&uart1 {
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status = "okay";
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current-speed = <115200>;
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clock-frequency = <1804800>;
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};
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&uart2 {
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status = "okay";
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current-speed = <460800>;
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clock-frequency = <1804800>;
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};
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&ite_uart1_wrapper {
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status = "okay";
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};
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&ite_uart2_wrapper {
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status = "okay";
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};
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/* pwm for test */
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&pwm0 {
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status = "okay";
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prescaler-cx = <PWM_PRESCALER_C6>;
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/*
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* If we need pwm output in ITE chip power saving mode,
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* then we should set frequency <=324Hz.
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*/
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pwm-output-frequency = <324>;
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};
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/* pwm for fan */
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&pwm7 {
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status = "okay";
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prescaler-cx = <PWM_PRESCALER_C4>;
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pwm-output-frequency = <30000>;
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};
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/* fan tachometer sensor */
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&tach0 {
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status = "okay";
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channel = <IT8XXX2_TACH_CHANNEL_A>;
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pulses-per-round = <2>;
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};
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&kscan0 {
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status = "okay";
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};
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&flash0 {
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partitions {
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compatible = "fixed-partitions";
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#address-cells = <1>;
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#size-cells = <1>;
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boot_partition: partition@0 {
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label = "mcuboot";
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reg = <0x00000000 0x20000>;
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};
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slot0_partition: partition@20000 {
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label = "image-0";
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reg = <0x00020000 0x20000>;
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};
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slot1_partition: partition@40000 {
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label = "image-1";
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reg = <0x00040000 0x10000>;
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};
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scratch_partition: partition@50000 {
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label = "image-scratch";
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reg = <0x00050000 0x10000>;
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};
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storage_partition: partition@60000 {
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label = "storage";
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reg = <0x00060000 0x20000>;
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};
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};
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};
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