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106 lines
2.7 KiB
106 lines
2.7 KiB
# SPDX-License-Identifier: GPL-2.0-or-later |
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# Copyright 2019 IBM Corp. |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/mmc/aspeed,sdhci.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: ASPEED SD/SDIO/MMC Controller |
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maintainers: |
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- Andrew Jeffery <[email protected]> |
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- Ryan Chen <[email protected]> |
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description: |+ |
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The ASPEED SD/SDIO/eMMC controller exposes two slots implementing the SDIO |
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Host Specification v2.00, with 1 or 4 bit data buses, or an 8 bit data bus if |
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only a single slot is enabled. |
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The two slots are supported by a common configuration area. As the SDHCIs for |
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the slots are dependent on the common configuration area, they are described |
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as child nodes. |
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properties: |
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compatible: |
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enum: |
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- aspeed,ast2400-sd-controller |
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- aspeed,ast2500-sd-controller |
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- aspeed,ast2600-sd-controller |
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reg: |
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maxItems: 1 |
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description: Common configuration registers |
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"#address-cells": |
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const: 1 |
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"#size-cells": |
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const: 1 |
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ranges: true |
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clocks: |
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maxItems: 1 |
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description: The SD/SDIO controller clock gate |
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patternProperties: |
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"^sdhci@[0-9a-f]+$": |
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type: object |
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$ref: mmc-controller.yaml |
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properties: |
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compatible: |
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enum: |
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- aspeed,ast2400-sdhci |
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- aspeed,ast2500-sdhci |
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- aspeed,ast2600-sdhci |
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reg: |
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maxItems: 1 |
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description: The SDHCI registers |
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clocks: |
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maxItems: 1 |
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description: The SD bus clock |
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interrupts: |
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maxItems: 1 |
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description: The SD interrupt shared between both slots |
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sdhci,auto-cmd12: |
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type: boolean |
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description: Specifies that controller should use auto CMD12 |
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required: |
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- compatible |
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- reg |
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- clocks |
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- interrupts |
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additionalProperties: false |
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required: |
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- compatible |
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- reg |
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- "#address-cells" |
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- "#size-cells" |
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- ranges |
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- clocks |
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examples: |
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- | |
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#include <dt-bindings/clock/aspeed-clock.h> |
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sdc@1e740000 { |
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compatible = "aspeed,ast2500-sd-controller"; |
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reg = <0x1e740000 0x100>; |
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#address-cells = <1>; |
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#size-cells = <1>; |
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ranges = <0 0x1e740000 0x20000>; |
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clocks = <&syscon ASPEED_CLK_GATE_SDCLK>; |
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sdhci0: sdhci@100 { |
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compatible = "aspeed,ast2500-sdhci"; |
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reg = <0x100 0x100>; |
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interrupts = <26>; |
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sdhci,auto-cmd12; |
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clocks = <&syscon ASPEED_CLK_SDIO>; |
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}; |
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sdhci1: sdhci@200 { |
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compatible = "aspeed,ast2500-sdhci"; |
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reg = <0x200 0x100>; |
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interrupts = <26>; |
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sdhci,auto-cmd12; |
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clocks = <&syscon ASPEED_CLK_SDIO>; |
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}; |
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};
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