107 lines
2.7 KiB
YAML
107 lines
2.7 KiB
YAML
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# 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 <andrew@aj.id.au>
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- Ryan Chen <ryanchen.aspeed@gmail.com>
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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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allOf:
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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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