Date:   Wed, 25 Jan 2023 14:34:20 -0600
From:   Rob Herring <robh@kernel.org>
To:     bchihi@baylibre.com
Cc:     daniel.lezcano@linaro.org, angelogioacchino.delregno@collabora.com,
        rafael@kernel.org, amitk@kernel.org, rui.zhang@intel.com,
        matthias.bgg@gmail.com, krzysztof.kozlowski+dt@linaro.org,
        rdunlap@infradead.org, ye.xingchen@zte.com.cn,
        p.zabel@pengutronix.de, linux-pm@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
        khilman@baylibre.com, james.lo@mediatek.com,
        rex-bc.chen@mediatek.com
Subject: Re: [PATCH v11 2/6] dt-bindings/thermal/mediatek: Add LVTS thermal
 controllers dt-binding definition
Message-ID: <20230125203420.GA2855708-robh@kernel.org>
References: <20230124131717.128660-1-bchihi@baylibre.com>
 <20230124131717.128660-3-bchihi@baylibre.com>
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On Tue, Jan 24, 2023 at 02:17:13PM +0100, bchihi@baylibre.com wrote:
> From: Balsam CHIHI <bchihi@baylibre.com>
>

dt-bindings: thermal: ... for the subject
 
> Add LVTS thermal controllers dt-binding definition for mt8195.
> 
> Signed-off-by: Balsam CHIHI <bchihi@baylibre.com>
> ---
>  .../thermal/mediatek,lvts-thermal.yaml        | 107 ++++++++++++++++++
>  include/dt-bindings/thermal/mediatek-lvts.h   |  19 ++++
>  2 files changed, 126 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
>  create mode 100644 include/dt-bindings/thermal/mediatek-lvts.h
> 
> diff --git a/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> new file mode 100644
> index 000000000000..12bfbdd8ff89
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml
> @@ -0,0 +1,107 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/mediatek,lvts-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek SoC Low Voltage Thermal Sensor (LVTS)
> +
> +maintainers:
> +  - Balsam CHIHI <bchihi@baylibre.com>
> +
> +description: |
> +  LVTS is a thermal management architecture composed of three subsystems,
> +  a Sensing device - Thermal Sensing Micro Circuit Unit (TSMCU),
> +  a Converter - Low Voltage Thermal Sensor converter (LVTS), and
> +  a Digital controller (LVTS_CTRL).
> +
> +properties:
> +  compatible:
> +    enum:
> +      - mediatek,mt8195-lvts-ap
> +      - mediatek,mt8195-lvts-mcu
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +    description: LVTS reset for clearing temporary data on AP/MCU.
> +
> +  nvmem-cells:
> +    minItems: 1
> +    items:
> +      - description: Calibration eFuse data 1 for LVTS
> +      - description: Calibration eFuse data 2 for LVTS
> +
> +  nvmem-cell-names:
> +    minItems: 1
> +    items:
> +      - const: lvts-calib-data-1
> +      - const: lvts-calib-data-2
> +
> +  "#thermal-sensor-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - resets
> +  - nvmem-cells
> +  - nvmem-cell-names
> +  - "#thermal-sensor-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/mt8195-clk.h>
> +    #include <dt-bindings/reset/mt8195-resets.h>
> +    #include <dt-bindings/thermal/mediatek-lvts.h>
> +
> +    soc {
> +      #address-cells = <2>;
> +      #size-cells = <2>;
> +
> +      lvts_mcu: thermal-sensor@11278000 {
> +        compatible = "mediatek,mt8195-lvts-mcu";
> +        reg = <0 0x11278000 0 0x1000>;
> +        interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH 0>;
> +        clocks = <&infracfg_ao CLK_INFRA_AO_THERM>;
> +        resets = <&infracfg_ao MT8195_INFRA_RST4_THERM_CTRL_MCU_SWRST>;
> +        nvmem-cells = <&lvts_efuse_data1 &lvts_efuse_data2>;
> +        nvmem-cell-names = "lvts-calib-data-1", "lvts-calib-data-2";
> +        #thermal-sensor-cells = <1>;
> +      };
> +    };
> +
> +    thermal_zones: thermal-zones {
> +      cpu0-thermal {
> +        polling-delay = <1000>;
> +        polling-delay-passive = <250>;
> +        thermal-sensors = <&lvts_mcu MT8195_MCU_LITTLE_CPU0>;
> +
> +        trips {
> +          cpu0_alert: trip-alert {
> +            temperature = <85000>;
> +            hysteresis = <2000>;
> +            type = "passive";
> +          };
> +
> +          cpu0_crit: trip-crit {
> +            temperature = <100000>;
> +            hysteresis = <2000>;
> +            type = "critical";
> +          };
> +        };
> +      };
> +    };
> diff --git a/include/dt-bindings/thermal/mediatek-lvts.h b/include/dt-bindings/thermal/mediatek-lvts.h
> new file mode 100644
> index 000000000000..428a95c18509
> --- /dev/null
> +++ b/include/dt-bindings/thermal/mediatek-lvts.h
> @@ -0,0 +1,19 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */

Okay with GPL 4? GPL-2.0-only

Dual license please. Consistent with your .dts files.

> +/*
> + * Copyright (c) 2023 MediaTek Inc.
> + * Author: Balsam CHIHI <bchihi@baylibre.com>
> + */
> +
> +#ifndef __MEDIATEK_LVTS_DT_H
> +#define __MEDIATEK_LVTS_DT_H
> +
> +#define MT8195_MCU_BIG_CPU0	0
> +#define MT8195_MCU_BIG_CPU1	1
> +#define MT8195_MCU_BIG_CPU2	2
> +#define MT8195_MCU_BIG_CPU3	3
> +#define MT8195_MCU_LITTLE_CPU0	4
> +#define MT8195_MCU_LITTLE_CPU1	5
> +#define MT8195_MCU_LITTLE_CPU2	6
> +#define MT8195_MCU_LITTLE_CPU3	7
> +
> +#endif /* __MEDIATEK_LVTS_DT_H */
> -- 
> 2.34.1
>