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thermal/drivers/mediatek: Add delay after thermal banks initialization

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Thermal sensor reads performed immediately after thermal bank
initialization returns bogus values. This is currently tackled by returning
0 if the temperature is bogus (exceeding 200000).

Instead, add a delay between the bank init and the thermal zone device
register to properly fix this.

Signed-off-by: Michael Kao <michael.kao@mediatek.com>
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20221018-up-i350-thermal-bringup-v9-5-55a1ae14af74@baylibre.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Amjad Ouled-Ameur 2023-01-27 16:44:46 +01:00 committed by Daniel Lezcano
parent 56edffdc29
commit 10debf8c2d
1 changed files with 3 additions and 8 deletions
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11
drivers/thermal/mediatek/auxadc_thermal.c
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@ -816,14 +816,6 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank)
mt, conf->bank_data[bank->id].sensors[i], raw);
/*
* The first read of a sensor often contains very high bogus
* temperature value. Filter these out so that the system does
* not immediately shut down.
*/
if (temp > 200000)
temp = 0;
if (temp > max)
max = temp;
}
@ -1281,6 +1273,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, mt);
/* Delay for thermal banks to be ready */
msleep(30);
tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt,
&mtk_thermal_ops);
if (IS_ERR(tzdev)) {