dt-bindings: mmc: atmel,hsmci: Convert to json schema
Convert atmel,hsmci documentation to yaml format. The new file will inherit from mmc-controller.yaml. Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250224-mmc-slot-v4-2-231620a31e88@microchip.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>pull/1184/head
Dharma Balasubiramani
Ulf Hansson
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mmc/atmel,hsmci.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Atmel High-Speed MultiMedia Card Interface (HSMCI)
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description:
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The Atmel HSMCI controller provides an interface for MMC, SD, and SDIO memory
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cards.
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maintainers:
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- Nicolas Ferre <nicolas.ferre@microchip.com>
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- Aubin Constans <aubin.constans@microchip.com>
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allOf:
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- $ref: mmc-controller.yaml
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properties:
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compatible:
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const: atmel,hsmci
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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dmas:
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maxItems: 1
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dma-names:
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const: rxtx
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clocks:
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maxItems: 1
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clock-names:
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const: mci_clk
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"#address-cells":
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const: 1
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description: Used for slot IDs.
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"#size-cells":
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const: 0
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patternProperties:
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"slot@[0-2]$":
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$ref: mmc-slot.yaml
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description: A slot node representing an MMC, SD, or SDIO slot.
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properties:
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reg:
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enum: [0, 1]
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required:
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- reg
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- bus-width
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unevaluatedProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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- "#address-cells"
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- "#size-cells"
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anyOf:
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- required:
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- slot@0
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- required:
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- slot@1
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/clock/at91.h>
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mmc@f0008000 {
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compatible = "atmel,hsmci";
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reg = <0xf0008000 0x600>;
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interrupts = <12 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&mci0_clk>;
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clock-names = "mci_clk";
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#address-cells = <1>;
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#size-cells = <0>;
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slot@0 {
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reg = <0>;
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bus-width = <4>;
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cd-gpios = <&pioD 15 0>;
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cd-inverted;
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};
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slot@1 {
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reg = <1>;
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bus-width = <4>;
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};
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};
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...
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@ -1,73 +0,0 @@
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* Atmel High Speed MultiMedia Card Interface
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This controller on atmel products provides an interface for MMC, SD and SDIO
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types of memory cards.
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This file documents differences between the core properties described
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by mmc.txt and the properties used by the atmel-mci driver.
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1) MCI node
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Required properties:
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- compatible: should be "atmel,hsmci"
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- #address-cells: should be one. The cell is the slot id.
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- #size-cells: should be zero.
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- at least one slot node
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- clock-names: tuple listing input clock names.
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Required elements: "mci_clk"
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- clocks: phandles to input clocks.
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The node contains child nodes for each slot that the platform uses
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Example MCI node:
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mmc0: mmc@f0008000 {
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compatible = "atmel,hsmci";
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reg = <0xf0008000 0x600>;
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interrupts = <12 4>;
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#address-cells = <1>;
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#size-cells = <0>;
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clock-names = "mci_clk";
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clocks = <&mci0_clk>;
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[ child node definitions...]
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};
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2) slot nodes
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Required properties:
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- reg: should contain the slot id.
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- bus-width: number of data lines connected to the controller
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Optional properties:
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- cd-gpios: specify GPIOs for card detection
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- cd-inverted: invert the value of external card detect gpio line
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- wp-gpios: specify GPIOs for write protection
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Example slot node:
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slot@0 {
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reg = <0>;
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bus-width = <4>;
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cd-gpios = <&pioD 15 0>
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cd-inverted;
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};
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Example full MCI node:
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mmc0: mmc@f0008000 {
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compatible = "atmel,hsmci";
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reg = <0xf0008000 0x600>;
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interrupts = <12 4>;
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#address-cells = <1>;
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#size-cells = <0>;
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slot@0 {
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reg = <0>;
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bus-width = <4>;
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cd-gpios = <&pioD 15 0>
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cd-inverted;
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};
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slot@1 {
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reg = <1>;
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bus-width = <4>;
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};
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};
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