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f47fdb855d
The example node in the binding uses the AST2500 compatible string for the SD controller with a 64kiB ranges property, but the SD controller is allocated 128kiB of MMIO space according to the AST2500 datasheet. Fix the example to correctly reflect the hardware in the AST2500, however it should be noted that the MMIO region is reduced to 64kiB in the AST2600 where a second SD controller block has been introduced into the address space. Also add the IBM copyright header that I left out of the initial patch. Suggested-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
107 lines
2.7 KiB
YAML
107 lines
2.7 KiB
YAML
# 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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