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dt-bindings: hwmon: (mr75203) add coefficient properties for the thermal equation

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Add optional temperature coefficient properties:
 *) moortec,ts-coeff-g
 *) moortec,ts-coeff-h
 *) moortec,ts-coeff-cal5
 *) moortec,ts-coeff-j
If defined they shall be used instead of defaults.

The coefficients were added to device tree on top of the series property
(which can be used to select between series 5 and series 6), because
coefficients can vary between product and product, and code defaults might
not be accurate enough.

Signed-off-by: Eliav Farber <farbere@amazon.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220908152449.35457-19-farbere@amazon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Eliav Farber 2022-09-08 15:24:46 +00:00 committed by Guenter Roeck
parent 3b12ca798e
commit bf1fdafdbc
1 changed files with 37 additions and 0 deletions
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37
Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
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@ -100,6 +100,41 @@ properties:
default: 5
$ref: /schemas/types.yaml#/definitions/uint32
moortec,ts-coeff-g:
description:
G coefficient for temperature equation.
Default for series 5 = 60000
Default for series 6 = 57400
multipleOf: 1000
minimum: 1000
$ref: /schemas/types.yaml#/definitions/uint32
moortec,ts-coeff-h:
description:
H coefficient for temperature equation.
Default for series 5 = 200000
Default for series 6 = 249400
multipleOf: 1000
minimum: 1000
$ref: /schemas/types.yaml#/definitions/uint32
moortec,ts-coeff-cal5:
description:
cal5 coefficient for temperature equation.
Default for series 5 = 4094
Default for series 6 = 4096
minimum: 1
$ref: /schemas/types.yaml#/definitions/uint32
moortec,ts-coeff-j:
description:
J coefficient for temperature equation.
Default for series 5 = -100
Default for series 6 = 0
multipleOf: 1000
maximum: 0
$ref: /schemas/types.yaml#/definitions/int32
required:
- compatible
- reg
@ -123,5 +158,7 @@ examples:
resets = <&rcu0 0x40 7>;
moortec,vm-active-channels = /bits/ 8 <0x10 0x05>;
moortec,vm-pre-scaler-x2 = /bits/ 8 <5 6 20>;
moortec,ts-coeff-g = <61400>;
moortec,ts-coeff-h = <253700>;
#thermal-sensor-cells = <1>;
};