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Diffstat (limited to 'Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml b/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml new file mode 100644 index 000000000..f04db802a --- /dev/null +++ b/Documentation/devicetree/bindings/arm/vexpress-sysreg.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/vexpress-sysreg.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Versatile Express system registers bindings + +maintainers: + - Andre Przywara <andre.przywara@arm.com> + +description: + This is a system control registers block, providing multiple low level + platform functions like board detection and identification, software + interrupt generation, MMC and NOR Flash control, etc. + +properties: + compatible: + const: arm,vexpress-sysreg + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 1 + + ranges: true + + gpio-controller: + deprecated: true + + "#gpio-cells": + deprecated: true + const: 2 + +additionalProperties: false + +patternProperties: + '^gpio@[0-9a-f]+$': + type: object + additionalProperties: false + description: + GPIO children + + properties: + compatible: + enum: + - arm,vexpress-sysreg,sys_led + - arm,vexpress-sysreg,sys_mci + - arm,vexpress-sysreg,sys_flash + + gpio-controller: true + + "#gpio-cells": + const: 2 + description: | + The first cell is the function number: + for sys_led : 0..7 = LED 0..7 + for sys_mci : 0 = MMC CARDIN, 1 = MMC WPROT + for sys_flash : 0 = NOR FLASH WPn + The second cell can take standard GPIO flags. + + reg: + maxItems: 1 + + required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +required: + - compatible + - reg + +examples: + - | + sysreg@0 { + compatible = "arm,vexpress-sysreg"; + reg = <0x00000 0x1000>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0 0 0x1000>; + + v2m_led_gpios: gpio@8 { + compatible = "arm,vexpress-sysreg,sys_led"; + reg = <0x008 4>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + +... |