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samus: Start fans at 1000 RPM

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After receiving more info from the manufacturer, it appears that
since we're using closed-loop feedback to drive the fan we can
turn it at whatever speed seems to work.

While we're bikeshedding over the startup noise, let's put the
start/min speed back to 1000RPM to help distinguish the startup
chirp from the fan-is-running-now noise.

BUG=chrome-os-partner:32757
BRANCH=ToT,Samus
TEST=make buildall -j

Watch fan speeds while doing things. It still makes noise, but it's
quieter.

Change-Id: I5c21bf9021e4110f31c6dded78852347c4eb6119
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/234755
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Reviewed-by: Eric Caruso <ejcaruso@chromium.org>
This commit is contained in:
Bill Richardson
2014-12-09 14:26:14 -08:00
committed by chrome-internal-fetch
parent 73949da5d9
commit 99ec74d7d4
1 changed files with 5 additions and 5 deletions
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10
board/samus/board.c
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@@ -107,16 +107,16 @@ BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
/* Physical fans. These are logically separate from pwm_channels. */
const struct fan_t fans[] = {
{.flags = FAN_USE_RPM_MODE,
.rpm_min = 2286,
.rpm_start = 3090,
.rpm_min = 1000,
.rpm_start = 1000,
.rpm_max = 6350,
.ch = 2,
.pgood_gpio = -1,
.enable_gpio = -1,
},
{.flags = FAN_USE_RPM_MODE,
.rpm_min = 2286,
.rpm_start = 3090,
.rpm_min = 1000,
.rpm_start = 1000,
.rpm_max = 6350,
.ch = 3,
.pgood_gpio = -1,
@@ -188,7 +188,7 @@ BUILD_ASSERT(ARRAY_SIZE(als) == ALS_COUNT);
*/
struct ec_thermal_config thermal_params[] = {
/* Only the AP affects the thermal limits and fan speed. */
{{C_TO_K(95), C_TO_K(97), C_TO_K(99)}, C_TO_K(43), C_TO_K(75)},
{{C_TO_K(95), C_TO_K(97), C_TO_K(99)}, C_TO_K(43), C_TO_K(85)},
{{0, 0, 0}, 0, 0},
{{0, 0, 0}, 0, 0},
{{0, 0, 0}, 0, 0},