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dt-bindings: platform: Add Huawei Matebook E Go EC

Add binding for the EC found in the Huawei Matebook E Go and
Huawei Matebook E Go LTE 2-in-1 tablets, the former one is a QS sc8280xp
based tablet, the latter one is a QS sc8180x based tablet.

This series has a codename, gaokun. More information about gaokun, please
check https://bugzilla.kernel.org/show_bug.cgi?id=219645

Signed-off-by: Pengyu Luo <mitltlatltl@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20250214180656.28599-2-mitltlatltl@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

authored by

Pengyu Luo and committed by
Ilpo Järvinen defcf2fb 5ad6d62c

+124
+124
Documentation/devicetree/bindings/platform/huawei,gaokun-ec.yaml
··· 1 + # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 + %YAML 1.2 3 + --- 4 + $id: http://devicetree.org/schemas/platform/huawei,gaokun-ec.yaml# 5 + $schema: http://devicetree.org/meta-schemas/core.yaml# 6 + 7 + title: Huawei Matebook E Go Embedded Controller 8 + 9 + maintainers: 10 + - Pengyu Luo <mitltlatltl@gmail.com> 11 + 12 + description: 13 + Different from other Qualcomm Snapdragon sc8180x and sc8280xp-based 14 + machines, the Huawei Matebook E Go tablets use embedded controllers 15 + while others use a system called PMIC GLink which handles battery, 16 + UCSI, USB Type-C DP Alt Mode. In addition, Huawei's implementation 17 + also handles additional features, such as charging thresholds, FN 18 + lock, smart charging, tablet lid status, thermal sensors, and more. 19 + 20 + properties: 21 + compatible: 22 + enum: 23 + - huawei,gaokun3-ec 24 + 25 + reg: 26 + const: 0x38 27 + 28 + '#address-cells': 29 + const: 1 30 + 31 + '#size-cells': 32 + const: 0 33 + 34 + interrupts: 35 + maxItems: 1 36 + 37 + patternProperties: 38 + '^connector@[01]$': 39 + $ref: /schemas/connector/usb-connector.yaml# 40 + 41 + properties: 42 + reg: 43 + maxItems: 1 44 + 45 + required: 46 + - compatible 47 + - reg 48 + - interrupts 49 + 50 + additionalProperties: false 51 + 52 + examples: 53 + - | 54 + #include <dt-bindings/interrupt-controller/irq.h> 55 + i2c { 56 + #address-cells = <1>; 57 + #size-cells = <0>; 58 + 59 + embedded-controller@38 { 60 + compatible = "huawei,gaokun3-ec"; 61 + reg = <0x38>; 62 + 63 + interrupts-extended = <&tlmm 107 IRQ_TYPE_LEVEL_LOW>; 64 + 65 + #address-cells = <1>; 66 + #size-cells = <0>; 67 + 68 + connector@0 { 69 + compatible = "usb-c-connector"; 70 + reg = <0>; 71 + power-role = "dual"; 72 + data-role = "dual"; 73 + 74 + ports { 75 + #address-cells = <1>; 76 + #size-cells = <0>; 77 + 78 + port@0 { 79 + reg = <0>; 80 + 81 + ucsi0_ss_in: endpoint { 82 + remote-endpoint = <&usb_0_qmpphy_out>; 83 + }; 84 + }; 85 + 86 + port@1 { 87 + reg = <1>; 88 + 89 + ucsi0_sbu: endpoint { 90 + remote-endpoint = <&usb0_sbu_mux>; 91 + }; 92 + }; 93 + }; 94 + }; 95 + 96 + connector@1 { 97 + compatible = "usb-c-connector"; 98 + reg = <1>; 99 + power-role = "dual"; 100 + data-role = "dual"; 101 + 102 + ports { 103 + #address-cells = <1>; 104 + #size-cells = <0>; 105 + 106 + port@0 { 107 + reg = <0>; 108 + 109 + ucsi1_ss_in: endpoint { 110 + remote-endpoint = <&usb_1_qmpphy_out>; 111 + }; 112 + }; 113 + 114 + port@1 { 115 + reg = <1>; 116 + 117 + ucsi1_sbu: endpoint { 118 + remote-endpoint = <&usb1_sbu_mux>; 119 + }; 120 + }; 121 + }; 122 + }; 123 + }; 124 + };