# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id:
http://devicetree.org/schemas/mmc/mmc-card.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: MMC Card / eMMC Generic
maintainers:
- Ulf Hansson <ulf.hansson@linaro.org>
description: |
This documents describes the devicetree bindings for a mmc-host controller
child node describing a mmc-card / an eMMC.
It's possible to define a fixed partition table for an eMMC for the user
partition, the 2 BOOT partition (boot1/2) and the 4 GP (gp1/2/3/4) if supported
by the eMMC.
properties:
compatible:
const: mmc-card
reg:
const: 0
broken-hpi:
$ref: /schemas/types.yaml#/definitions/flag
description:
Use this to indicate that the mmc-card has a broken hpi
implementation, and that hpi should not be used.
patternProperties:
"^partitions(-boot[12]|-gp[14])?$":
$ref: /schemas/mtd/partitions/partitions.yaml
patternProperties:
"^partition@[0-9a-f]+$":
$ref: /schemas/mtd/partitions/partition.yaml
properties:
reg:
description: Must be multiple of 512 as it's converted
internally from bytes to SECTOR_SIZE (512 bytes)
required:
- reg
unevaluatedProperties: false
required:
- compatible
- reg
additionalProperties: false
examples:
- |
mmc {
#address-cells = <1>;
#size-cells = <0>;
card@0 {
compatible = "mmc-card";
reg = <0>;
broken-hpi;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "kernel"; /* Kernel */
reg = <0x0 0x2000000>; /* 32 MB */
};
partition@2000000 {
label = "rootfs";
reg = <0x2000000 0x40000000>; /* 1GB */
};
};
partitions-boot1 {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "bl";
reg = <0x0 0x2000000>; /* 32MB */
read-only;
};
};
};
};
...
