Re: [PATCH v4 1/1] iio: mtk-auxadc: fix case IIO_CHAN_INFO_PROCESSED
From: Hsin-Yi Wang <hidden>
Date: 2021-10-31 16:49:56
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linux-devicetree, linux-iio, linux-mediatek, lkml
On Sun, Sep 26, 2021 at 7:26 PM Jonathan Cameron [off-list ref] wrote:
On Sun, 26 Sep 2021 15:30:28 +0800 Hui-Liu Liu [off-list ref] wrote:quoted
From: Hui Liu <redacted> The previous driver does't apply the necessary scaling to take the voltage range into account. We change readback value from raw data to input voltage to fix case IIO_CHAN_INFO_PROCESSED. Fixes: ace4cdfe67be ("iio: adc: mt2701: Add Mediatek auxadc driver for mt2701.") Signed-off-by: Hui Liu <redacted>
Hi Hui Liu, After this patch, mt8183 tboard thermal sensor[1] is getting incorrect value: Before the patch: /sys/class/thermal/thermal_zone0/temp:41488 (cpu) /sys/class/thermal/thermal_zone7/temp:35433 (tboard) /sys/class/thermal/thermal_zone8/temp:33709 (tboard) After the patch: /sys/class/thermal/thermal_zone0/temp:40365 (cpu) /sys/class/thermal/thermal_zone7/temp:69781 (tboard) /sys/class/thermal/thermal_zone8/temp:69014 (tboard) [1] https://elixir.bootlin.com/linux/v5.15-rc7/source/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi#L862
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