From: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx> Add device tree bindings documentation for the Intel Hard Processor System (HPS) Copy Engine. Signed-off-by: Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx> --- v4: - move from soc to soc/intel/ v3: - remove unused label - move from misc to soc - remove 0x from #address-cells/#size-cells values - change hps_cp_eng@0 to dma-controller@0 - remote inaccurate 'items:' tag --- .../soc/intel/intel,hps-copy-engine.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/intel/intel,hps-copy-engine.yaml diff --git a/Documentation/devicetree/bindings/soc/intel/intel,hps-copy-engine.yaml b/Documentation/devicetree/bindings/soc/intel/intel,hps-copy-engine.yaml new file mode 100644 index 000000000000..8634865015cd --- /dev/null +++ b/Documentation/devicetree/bindings/soc/intel/intel,hps-copy-engine.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) 2022, Intel Corporation +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/intel/intel,hps-copy-engine.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Intel HPS Copy Engine + +maintainers: + - Matthew Gerlach <matthew.gerlach@xxxxxxxxxxxxxxx> + +description: | + The Intel Hard Processor System (HPS) Copy Engine is an IP block used to copy + a bootable image from host memory to HPS DDR. Additionally, there is a + register the HPS can use to indicate the state of booting the copied image as + well as a keep-a-live indication to the host. + +properties: + compatible: + const: intel,hps-copy-engine + + '#dma-cells': + const: 1 + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + bus@80000000 { + compatible = "simple-bus"; + reg = <0x80000000 0x60000000>, + <0xf9000000 0x00100000>; + reg-names = "axi_h2f", "axi_h2f_lw"; + #address-cells = <2>; + #size-cells = <1>; + ranges = <0x00000000 0x00000000 0xf9000000 0x00001000>; + + dma-controller@0 { + compatible = "intel,hps-copy-engine"; + reg = <0x00000000 0x00000000 0x00001000>; + #dma-cells = <1>; + }; + }; -- 2.25.1
