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| author | Caveh Jalali <caveh@chromium.org> | 2021-02-26 00:19:18 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-02-27 04:04:46 +0000 |
| commit | 924d0cad36a6a6a1d87df5926a0af8c77ddb244b (patch) | |
| tree | 496c2c7fff360269a829bf6e6e349e8c8b113f53 | |
| parent | 6ab80fd4094be30ef9e454f3f531826c4b1b7d2b (diff) | |
| download | chrome-ec-924d0cad36a6a6a1d87df5926a0af8c77ddb244b.tar.gz | |
brya: tune fan parameters
This tunes the fan parameters for the brya prototype fan. These are
temporary parameters until a real fan is available.
BRANCH=none
BUG=b:173575131,b:180681346
TEST=observed fan speeds using EC CLI
Change-Id: I74c1044c56a0ab7374f0fe52a757c33ede2aaa08
Signed-off-by: Caveh Jalali <caveh@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2722553
Reviewed-by: Keith Short <keithshort@chromium.org>
| -rw-r--r-- | board/brya/fans.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/board/brya/fans.c b/board/brya/fans.c index f8506c2b1e..9a7b7f8199 100644 --- a/board/brya/fans.c +++ b/board/brya/fans.c @@ -28,18 +28,15 @@ static const struct fan_conf fan_conf_0 = { }; /* - * TOOD(caveh): this is from volteer, need to update for brya + * TOOD(b/180681346): need to update for real fan * - * Fan specs from datasheet: - * Max speed 5900 rpm (+/- 7%), minimum duty cycle 30%. - * Minimum speed not specified by RPM. Set minimum RPM to max speed (with - * margin) x 30%. - * 5900 x 1.07 x 0.30 = 1894, round up to 1900 + * Prototype fan spins at about 7200 RPM at 100% PWM. + * Set minimum at around 30% PWM. */ static const struct fan_rpm fan_rpm_0 = { - .rpm_min = 1900, - .rpm_start = 1900, - .rpm_max = 5900, + .rpm_min = 2200, + .rpm_start = 2200, + .rpm_max = 7200, }; const struct fan_t fans[FAN_CH_COUNT] = { |