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6fdc6e23a7
This doesn't yet do anything in the tools, but make it explicit so we can check either 'unevaluatedProperties' or 'additionalProperties' is present in schemas. 'unevaluatedProperties' is appropriate when including another schema (via '$ref') and all possible properties and/or child nodes are not explicitly listed in the schema with the '$ref'. This is in preparation to add a meta-schema to check for missing 'unevaluatedProperties' or 'additionalProperties'. This has been a constant source of review issues. Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Wolfram Sang <wsa@kernel.org> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-By: Vinod Koul <vkoul@kernel.org> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20201005183830.486085-2-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
62 lines
1.7 KiB
YAML
62 lines
1.7 KiB
YAML
%YAML 1.2
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---
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$id: http://devicetree.org/schemas/bus/renesas,bsc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas Bus State Controller (BSC)
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maintainers:
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- Geert Uytterhoeven <geert+renesas@glider.be>
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description: |
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The Renesas Bus State Controller (BSC, sometimes called "LBSC within Bus
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Bridge", or "External Bus Interface") can be found in several Renesas ARM
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SoCs. It provides an external bus for connecting multiple external
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devices to the SoC, driving several chip select lines, for e.g. NOR
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FLASH, Ethernet and USB.
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While the BSC is a fairly simple memory-mapped bus, it may be part of a
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PM domain, and may have a gateable functional clock. Before a device
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connected to the BSC can be accessed, the PM domain containing the BSC
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must be powered on, and the functional clock driving the BSC must be
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enabled.
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The bindings for the BSC extend the bindings for "simple-pm-bus".
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allOf:
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- $ref: simple-pm-bus.yaml#
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properties:
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compatible:
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items:
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- enum:
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- renesas,bsc-r8a73a4 # R-Mobile APE6 (r8a73a4)
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- renesas,bsc-sh73a0 # SH-Mobile AG5 (sh73a0)
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- const: renesas,bsc
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- {} # simple-pm-bus, but not listed here to avoid false select
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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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required:
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- reg
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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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bsc: bus@fec10000 {
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compatible = "renesas,bsc-sh73a0", "renesas,bsc", "simple-pm-bus";
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0 0 0x20000000>;
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reg = <0xfec10000 0x400>;
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interrupts = <0 39 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&zb_clk>;
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power-domains = <&pd_a4s>;
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};
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