Re: [PATCH v4 1/4] dt-bindings: thermal: k3-j72xx: Add VTM bindings documentation

From: Rob Herring
Date: Fri Nov 12 2021 - 15:00:01 EST


On Wed, Nov 03, 2021 at 02:49:21PM +0530, Keerthy wrote:
> Add VTM bindings documentation. In the Voltage Thermal
> Management Module(VTM), K3 J72XX supplies a voltage
> reference and a temperature sensor feature that are gathered in the band
> gap voltage and temperature sensor (VBGAPTS) module. The band
> gap provides current and voltage reference for its internal
> circuits and other analog IP blocks. The analog-to-digital
> converter (ADC) produces an output value that is proportional
> to the silicon temperature.
>
> Signed-off-by: Keerthy <j-keerthy@xxxxxx>
> ---
> .../bindings/thermal/ti,j72xx-thermal.yaml | 62 +++++++++++++++++++
> 1 file changed, 62 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
>
> diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> new file mode 100644
> index 000000000000..8483c495cb9a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> @@ -0,0 +1,62 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/ti,j72xx-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Texas Instruments J72XX VTM (DTS) binding
> +
> +maintainers:
> + - Keerthy <j-keerthy@xxxxxx>
> +
> +properties:
> + compatible:
> + const: ti,j721e-vtm
> + oneOf:
> + - enum:
> + - ti,j721e-vtm
> + - ti,j7200-vtm

Again, this isn't correct. In C like logic, it is saying compatible is
(ti,j721e-vtm && (ti,j721e-vtm || ti,j7200-vtm)) which is just
'ti,j721e-vtm'. I think you want just the 'enum'.

> +
> + reg:
> + maxItems: 3

What is each entry?

> +
> + power-domains:
> + maxItems: 1
> +
> + "#thermal-sensor-cells":
> + const: 1
> +
> +required:
> + - compatible
> + - reg
> + - power-domains
> + - "#thermal-sensor-cells"
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/soc/ti,sci_pm_domain.h>
> + wkup_vtm0: wkup_vtm0@42040000 {

thermal-sensor@...

> + compatible = "ti,j721e-vtm";
> + reg = <0x42040000 0x350>,
> + <0x42050000 0x350>,
> + <0x43000300 0x10>;
> + power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
> + #thermal-sensor-cells = <1>;
> + };
> +
> + mpu_thermal: mpu_thermal {

mpu-thermal

> + polling-delay-passive = <250>; /* milliseconds */
> + polling-delay = <500>; /* milliseconds */
> + thermal-sensors = <&wkup_vtm0 0>;
> +
> + trips {
> + mpu_crit: mpu_crit {

mpu-crit

> + temperature = <125000>; /* milliCelsius */
> + hysteresis = <2000>; /* milliCelsius */
> + type = "critical";
> + };
> + };
> + };
> +...
> --
> 2.17.1
>
>