Hi,
I am designing DT support for a hwmon chip.
It has some sensors, each of them can be:
- "disabled"
- "thermal diode"
- "thermistor"
- "voltage"
Four possible options for DT properties format.
Option 1: Separated property for each sensor.
Example nct7802 node:
nct7802 {
compatible = "nuvoton,nct7802";
reg = <0x2a>;
nuvoton,sensor1-type = "thermistor";
nuvoton,sensor2-type = "disabled";
nuvoton,sensor3-type = "voltage";
};
Option 2: Array of strings for all sensors.
nct7802 {
compatible = "nuvoton,nct7802";
reg = <0x2a>;
nuvoton,sensors-types = "thermistor", "disabled", "voltage";
};
Option 3: Sets of 4 cells.
Borrowed from marvell,reg-init and broadcom,c45-reg-init.
The first cell is the page address,
the second a register address within the page,
the third cell contains a mask to be ANDed with the existing register
value, and the fourth cell is ORed with the result to yield the
new register value. If the third cell has a value of zero,
no read of the existing value is performed.
Example nct7802 node:
nct7802 {
compatible = "nuvoton,nct7802";
reg = <0x2a>;
nct7802,reg-init =
<0 0x21 0 0x01 > // START = 1
<0 0x22 0x03 0x02>; // RTD1_MD = 2
};
Please suggest proper format for DT properties.
Thanks
Constantine
PS:
Datasheet:
https://www.nuvoton.com/hq/products/cloud-computing/hardware-monitors/desktop-server-series/nct7802y/
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