| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | # Copyright 2019 IBM Corp. |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/mmc/aspeed,sdhci.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: ASPEED SD/SDIO/MMC Controller |
| 9 | |
| 10 | maintainers: |
| 11 | - Andrew Jeffery <andrew@aj.id.au> |
| 12 | - Ryan Chen <ryanchen.aspeed@gmail.com> |
| 13 | |
| 14 | description: |+ |
| 15 | The ASPEED SD/SDIO/eMMC controller exposes two slots implementing the SDIO |
| 16 | Host Specification v2.00, with 1 or 4 bit data buses, or an 8 bit data bus if |
| 17 | only a single slot is enabled. |
| 18 | |
| 19 | The two slots are supported by a common configuration area. As the SDHCIs for |
| 20 | the slots are dependent on the common configuration area, they are described |
| 21 | as child nodes. |
| 22 | |
| 23 | properties: |
| 24 | compatible: |
| 25 | enum: |
| 26 | - aspeed,ast2400-sd-controller |
| 27 | - aspeed,ast2500-sd-controller |
| 28 | - aspeed,ast2600-sd-controller |
| 29 | reg: |
| 30 | maxItems: 1 |
| 31 | description: Common configuration registers |
| 32 | "#address-cells": |
| 33 | const: 1 |
| 34 | "#size-cells": |
| 35 | const: 1 |
| 36 | ranges: true |
| 37 | clocks: |
| 38 | maxItems: 1 |
| 39 | description: The SD/SDIO controller clock gate |
| 40 | |
| 41 | patternProperties: |
| 42 | "^sdhci@[0-9a-f]+$": |
| 43 | type: object |
| 44 | $ref: mmc-controller.yaml |
| 45 | unevaluatedProperties: false |
| 46 | |
| 47 | properties: |
| 48 | compatible: |
| 49 | enum: |
| 50 | - aspeed,ast2400-sdhci |
| 51 | - aspeed,ast2500-sdhci |
| 52 | - aspeed,ast2600-sdhci |
| 53 | reg: |
| 54 | maxItems: 1 |
| 55 | description: The SDHCI registers |
| 56 | clocks: |
| 57 | maxItems: 1 |
| 58 | description: The SD bus clock |
| 59 | interrupts: |
| 60 | maxItems: 1 |
| 61 | description: The SD interrupt shared between both slots |
| 62 | sdhci,auto-cmd12: |
| 63 | type: boolean |
| 64 | description: Specifies that controller should use auto CMD12 |
| 65 | required: |
| 66 | - compatible |
| 67 | - reg |
| 68 | - clocks |
| 69 | - interrupts |
| 70 | |
| 71 | additionalProperties: false |
| 72 | |
| 73 | required: |
| 74 | - compatible |
| 75 | - reg |
| 76 | - "#address-cells" |
| 77 | - "#size-cells" |
| 78 | - ranges |
| 79 | - clocks |
| 80 | |
| 81 | examples: |
| 82 | - | |
| 83 | #include <dt-bindings/clock/aspeed-clock.h> |
| 84 | sdc@1e740000 { |
| 85 | compatible = "aspeed,ast2500-sd-controller"; |
| 86 | reg = <0x1e740000 0x100>; |
| 87 | #address-cells = <1>; |
| 88 | #size-cells = <1>; |
| 89 | ranges = <0 0x1e740000 0x20000>; |
| 90 | clocks = <&syscon ASPEED_CLK_GATE_SDCLK>; |
| 91 | |
| 92 | sdhci0: sdhci@100 { |
| 93 | compatible = "aspeed,ast2500-sdhci"; |
| 94 | reg = <0x100 0x100>; |
| 95 | interrupts = <26>; |
| 96 | sdhci,auto-cmd12; |
| 97 | clocks = <&syscon ASPEED_CLK_SDIO>; |
| 98 | }; |
| 99 | |
| 100 | sdhci1: sdhci@200 { |
| 101 | compatible = "aspeed,ast2500-sdhci"; |
| 102 | reg = <0x200 0x100>; |
| 103 | interrupts = <26>; |
| 104 | sdhci,auto-cmd12; |
| 105 | clocks = <&syscon ASPEED_CLK_SDIO>; |
| 106 | }; |
| 107 | }; |