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author | Linus Walleij <linus.walleij@linaro.org> | 2020-01-10 11:14:10 +0300 |
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committer | Rob Herring <robh@kernel.org> | 2020-01-14 02:02:05 +0300 |
commit | c87967c57b128067f3a83a47e3402b4c344a26e3 (patch) | |
tree | 913f45836fdea69a597c655343b54e00c95597c9 /Documentation/devicetree/bindings/ata | |
parent | 2b966a9d07375d966b738ecb3f8924e215e6273b (diff) | |
download | linux-c87967c57b128067f3a83a47e3402b4c344a26e3.tar.xz |
dt-bindings: Create DT bindings for PATA controllers
I need to create subnodes for drives connected to PATA
host controllers, and this needs to be supported generally,
so create a common YAML binding for "ide" that will support
subnodes with ports.
This has been designed as a subset of
ata/ahci-platform.txt with the bare essentials and
should be possible to extend or superset to cover the
common bindings.
Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/ata')
-rw-r--r-- | Documentation/devicetree/bindings/ata/pata-common.yaml | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ata/pata-common.yaml b/Documentation/devicetree/bindings/ata/pata-common.yaml new file mode 100644 index 000000000000..fc5ebbe7108d --- /dev/null +++ b/Documentation/devicetree/bindings/ata/pata-common.yaml @@ -0,0 +1,50 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/ata/pata-common.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Common Properties for Parallel AT attachment (PATA) controllers + +maintainers: + - Linus Walleij <linus.walleij@linaro.org> + +description: | + This document defines device tree properties common to most Parallel + ATA (PATA, also known as IDE) AT attachment storage devices. + It doesn't constitue a device tree binding specification by itself but is + meant to be referenced by device tree bindings. + + The PATA (IDE) controller-specific device tree bindings are responsible for + defining whether each property is required or optional. + +properties: + $nodename: + pattern: "^ide(@.*)?$" + description: + Specifies the host controller node. PATA host controller nodes are named + "ide". + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^ide-port@[0-1]$": + description: | + DT nodes for ports connected on the PATA host. The master drive will have + ID number 0 and the slave drive will have ID number 1. The PATA port + nodes will be named "ide-port". + type: object + + properties: + reg: + minimum: 0 + maximum: 1 + description: + The ID number of the drive port, 0 for the master port and 1 for the + slave port. + +... |