From: "Friday Yang" <friday.yang@xxxxxxxxxxxx> To support SMI clamp and reset operation in genpd callback, add SMI LARB reset controller in the bindings. Add index in mt8188-resets.h to query the reset signal in the SMI reset control driver. Signed-off-by: Friday Yang <friday.yang@xxxxxxxxxxxx> --- .../bindings/reset/mediatek,smi-reset.yaml | 53 +++++++++++++++++++ include/dt-bindings/reset/mt8188-resets.h | 11 ++++ 2 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/reset/mediatek,smi-reset.yaml diff --git a/Documentation/devicetree/bindings/reset/mediatek,smi-reset.yaml b/Documentation/devicetree/bindings/reset/mediatek,smi-reset.yaml new file mode 100644 index 000000000000..77a6197a9846 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/mediatek,smi-reset.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +# Copyright (c) 2024 MediaTek Inc. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/mediatek,smi-reset.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek SMI Reset Controller + +maintainers: + - Friday Yang <friday.yang@xxxxxxxxxxxx> + +description: | + This reset controller node is used to perform reset management + of SMI larbs on MediaTek platform. It is used to implement various + reset functions required when SMI larbs apply clamp operation. + + For list of all valid reset indices see + <dt-bindings/reset/mt8188-resets.h> for MT8188. + +properties: + compatible: + enum: + - mediatek,mt8188-smi-reset + + "#reset-cells": + const: 1 + description: + The cell should be the device ID. SMI reset controller driver could + query the reset signal of each SMI larb by device ID. + + mediatek,larb-rst: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle of each subsys clock controller. SMI larbs are located in + these subsys. SMI needs to parse the node of each subsys clock + controller to get the register address, and then apply the reset + operation. + +required: + - compatible + - "#reset-cells" + - mediatek,larb-rst + +additionalProperties: false + +examples: + - | + reset-controller { + compatible = "mediatek,mt8188-smi-reset"; + #reset-cells = <1>; + mediatek,larb-rst = <&imgsys1_dip_top>; + }; diff --git a/include/dt-bindings/reset/mt8188-resets.h b/include/dt-bindings/reset/mt8188-resets.h index 5a58c54e7d20..387a4beac688 100644 --- a/include/dt-bindings/reset/mt8188-resets.h +++ b/include/dt-bindings/reset/mt8188-resets.h @@ -113,4 +113,15 @@ #define MT8188_VDO1_RST_HDR_GFX_FE1_DL_ASYNC 52 #define MT8188_VDO1_RST_HDR_VDO_BE_DL_ASYNC 53 +#define MT8188_SMI_RST_LARB10 0 +#define MT8188_SMI_RST_LARB11A 1 +#define MT8188_SMI_RST_LARB11C 2 +#define MT8188_SMI_RST_LARB12 3 +#define MT8188_SMI_RST_LARB11B 4 +#define MT8188_SMI_RST_LARB15 5 +#define MT8188_SMI_RST_LARB16B 6 +#define MT8188_SMI_RST_LARB17B 7 +#define MT8188_SMI_RST_LARB16A 8 +#define MT8188_SMI_RST_LARB17A 9 + #endif /* _DT_BINDINGS_RESET_CONTROLLER_MT8188 */ -- 2.46.0
