diff options
| author | Ruibin Chang <Ruibin.Chang@ite.com.tw> | 2021-11-30 13:25:29 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-12-02 00:53:09 +0000 |
| commit | f6ce56e1b09c5b77f383cd0c1363637ce681223a (patch) | |
| tree | b2fa1a6b4b532b4baa0703ec38d4bf412e901833 | |
| parent | 1fce93dbb94dcfa1f8df9c3279c69de38ce6afd4 (diff) | |
| download | chrome-ec-f6ce56e1b09c5b77f383cd0c1363637ce681223a.tar.gz | |
zephyr: leverage pwm and fan settings from cros_ec it8xxx2_evb
Leverage pwm and fan settings from cros_ec/main:it8xxx2_evb.
And this is convenient to check pwm or fan channel waveform in
the same pin.
Pwm output 324Hz isn't enough to turn on the fan, so set it to 30000Hz.
And we use 324Hz to test pwm maximum output in EC power saving mode.
BRANCH=none
BUG=none
TEST=zmake board it8xxx2_evb
Signed-off-by: Ruibin Chang <Ruibin.Chang@ite.com.tw>
Change-Id: I0e5c023a634f9a936c29b6bec399d86e66edffeb
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3310020
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Reviewed-by: Keith Short <keithshort@chromium.org>
Commit-Queue: Keith Short <keithshort@chromium.org>
| -rw-r--r-- | zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts b/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts index 251c6a4236..173a33b697 100644 --- a/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts +++ b/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts @@ -194,19 +194,20 @@ named-pwms { compatible = "named-pwms"; + /* NOTE: &pwm number needs same with channel number */ - test0 { - pwms = <&pwm7 PWM_CHANNEL_7 PWM_POLARITY_INVERTED>; - label = "TEST0"; + pwm_test: test { + pwms = <&pwm0 PWM_CHANNEL_0 PWM_POLARITY_NORMAL>; + label = "TEST"; /* * If we need pwm output in ITE chip power saving * mode, then we should set frequency <=324Hz. */ frequency = <324>; }; - test1 { - pwms = <&pwm0 PWM_CHANNEL_0 PWM_POLARITY_NORMAL>; - label = "TEST1"; + pwm_fan: fan { + pwms = <&pwm7 PWM_CHANNEL_7 PWM_POLARITY_NORMAL>; + label = "FAN"; frequency = <30000>; }; }; @@ -246,13 +247,13 @@ status = "okay"; }; -/* TEST1 */ +/* pwm for test */ &pwm0 { status = "okay"; prescaler-cx = <PWM_PRESCALER_C6>; }; -/* TEST0 */ +/* pwm for fan */ &pwm7 { status = "okay"; prescaler-cx = <PWM_PRESCALER_C4>; |