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51 lines
1.8 KiB
Diff
51 lines
1.8 KiB
Diff
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From 4eead70db74922bc61e9d0b4591524369a335751 Mon Sep 17 00:00:00 2001
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From: Amjad Ouled-Ameur <aouledameur@baylibre.com>
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Date: Fri, 27 Jan 2023 16:44:46 +0100
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Subject: [PATCH 13/42] thermal/drivers/mediatek: Add delay after thermal banks
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initialization
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Thermal sensor reads performed immediately after thermal bank
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initialization returns bogus values. This is currently tackled by returning
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0 if the temperature is bogus (exceeding 200000).
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Instead, add a delay between the bank init and the thermal zone device
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register to properly fix this.
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Signed-off-by: Michael Kao <michael.kao@mediatek.com>
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Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
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Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
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Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
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Link: https://lore.kernel.org/r/20221018-up-i350-thermal-bringup-v9-5-55a1ae14af74@baylibre.com
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Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
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---
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drivers/thermal/mediatek/auxadc_thermal.c | 11 +++--------
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1 file changed, 3 insertions(+), 8 deletions(-)
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--- a/drivers/thermal/mediatek/auxadc_thermal.c
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+++ b/drivers/thermal/mediatek/auxadc_thermal.c
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@@ -816,14 +816,6 @@ static int mtk_thermal_bank_temperature(
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mt, conf->bank_data[bank->id].sensors[i], raw);
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- /*
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- * The first read of a sensor often contains very high bogus
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- * temperature value. Filter these out so that the system does
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- * not immediately shut down.
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- */
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- if (temp > 200000)
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- temp = 0;
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-
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if (temp > max)
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max = temp;
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}
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@@ -1281,6 +1273,9 @@ static int mtk_thermal_probe(struct plat
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platform_set_drvdata(pdev, mt);
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+ /* Delay for thermal banks to be ready */
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+ msleep(30);
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+
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tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt,
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&mtk_thermal_ops);
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if (IS_ERR(tzdev)) {
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