| Message ID | 20221018-up-i350-thermal-bringup-v9-5-55a1ae14af74@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | thermal: mediatek: Add support for MT8365 SoC | expand |
On 27/01/2023 16:44, Amjad Ouled-Ameur wrote: > 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> > --- > drivers/thermal/mtk_thermal.c | 11 +++-------- > 1 file changed, 3 insertions(+), 8 deletions(-) > > diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c > index b8e06f6c7c42..ab7db385afb3 100644 > --- a/drivers/thermal/mtk_thermal.c > +++ b/drivers/thermal/mtk_thermal.c > @@ -730,14 +730,6 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank) > > temp = mt->raw_to_mcelsius(mt, 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; > } > @@ -1160,6 +1152,9 @@ static int mtk_thermal_probe(struct platform_device *pdev) > > platform_set_drvdata(pdev, mt); > > + // Delay for thermal banks to be ready Coding style for comments is : /* */ No need to resend, I'll take care of changing the comment format. > + msleep(30); > + > tzdev = devm_thermal_of_zone_register(&pdev->dev, 0, mt, > &mtk_thermal_ops); > if (IS_ERR(tzdev)) { >
diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c index b8e06f6c7c42..ab7db385afb3 100644 --- a/drivers/thermal/mtk_thermal.c +++ b/drivers/thermal/mtk_thermal.c @@ -730,14 +730,6 @@ static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank) temp = mt->raw_to_mcelsius(mt, 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; } @@ -1160,6 +1152,9 @@ 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)) {