Re: [PATCH 1/1] arm64: dts: mt8183-kukui: Update Tboard sensor mapping table

Hsin-Yi Wang
2021-11-03T04:24:35Z

On Wed, Nov 3, 2021 at 11:31 AM Ben Tseng <ben.tseng@mediatek.com> wrote:
>
> According to auxadc change the readback value from raw data to Vsense.
> Update the tboard table that temperature map to Vsense.
>
> pull-up voltage: 1800 mv
> pull-up resistor: 75K
>
> Vsense = pull-up voltage * Rntc / ( pull-up resistor + Rntc )
>
> Signed-off-by: Ben Tseng <ben.tseng@mediatek.com>
>

Tested-by: Hsin-Yi Wang <hsinyi@chromium.org>

> ---
> .../arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 108 +++++++++---------
> 1 file changed, 54 insertions(+), 54 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> index 8e9cf36a9a41..65447de64f06 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
> @@ -151,33 +151,33 @@
> #thermal-sensor-cells = <0>;
> io-channels = <&auxadc 0>;
> io-channel-names = "sensor-channel";
> - temperature-lookup-table = < (-5000) 4241
> - 0 4063
> - 5000 3856
> - 10000 3621
> - 15000 3364
> - 20000 3091
> - 25000 2810
> - 30000 2526
> - 35000 2247
> - 40000 1982
> - 45000 1734
> - 50000 1507
> - 55000 1305
> - 60000 1122
> - 65000 964
> - 70000 827
> - 75000 710
> - 80000 606
> - 85000 519
> - 90000 445
> - 95000 382
> - 100000 330
> - 105000 284
> - 110000 245
> - 115000 213
> - 120000 183
> - 125000 161>;
> + temperature-lookup-table = < (-5000) 1553
> + 0 1488
> + 5000 1412
> + 10000 1326
> + 15000 1232
> + 20000 1132
> + 25000 1029
> + 30000 925
> + 35000 823
> + 40000 726
> + 45000 635
> + 50000 552
> + 55000 478
> + 60000 411
> + 65000 353
> + 70000 303
> + 75000 260
> + 80000 222
> + 85000 190
> + 90000 163
> + 95000 140
> + 100000 121
> + 105000 104
> + 110000 90
> + 115000 78
> + 120000 67
> + 125000 59>;
> };
>
> tboard_thermistor2: thermal-sensor2 {
> @@ -185,33 +185,33 @@
> #thermal-sensor-cells = <0>;
> io-channels = <&auxadc 1>;
> io-channel-names = "sensor-channel";
> - temperature-lookup-table = < (-5000) 4241
> - 0 4063
> - 5000 3856
> - 10000 3621
> - 15000 3364
> - 20000 3091
> - 25000 2810
> - 30000 2526
> - 35000 2247
> - 40000 1982
> - 45000 1734
> - 50000 1507
> - 55000 1305
> - 60000 1122
> - 65000 964
> - 70000 827
> - 75000 710
> - 80000 606
> - 85000 519
> - 90000 445
> - 95000 382
> - 100000 330
> - 105000 284
> - 110000 245
> - 115000 213
> - 120000 183
> - 125000 161>;
> + temperature-lookup-table = < (-5000) 1553
> + 0 1488
> + 5000 1412
> + 10000 1326
> + 15000 1232
> + 20000 1132
> + 25000 1029
> + 30000 925
> + 35000 823
> + 40000 726
> + 45000 635
> + 50000 552
> + 55000 478
> + 60000 411
> + 65000 353
> + 70000 303
> + 75000 260
> + 80000 222
> + 85000 190
> + 90000 163
> + 95000 140
> + 100000 121
> + 105000 104
> + 110000 90
> + 115000 78
> + 120000 67
> + 125000 59>;
> };
> };
>
> --
> 2.18.0
>