Re: [PATCH v2 10/12] dt-bindings: memory-controllers: Add fsl,elbc-gpcm-uio

Frank Li
2025-02-10T19:45:29Z

On Fri, Feb 07, 2025 at 10:30:27PM +0100, J. Neuschäfer via B4 Relay wrote:
> From: "J. Neuschäfer" <j.ne@posteo.net>
>
> Formalize the binding already supported by the uio_fsl_elbc_gpcm.c
> driver.
>
> Signed-off-by: J. Neuschäfer <j.ne@posteo.net>

Reviewed-by: Frank Li <Frank.Li@nxp.com>

> ---
>
> V2:
> - split out from fsl,elbc patch
> - add description
> - remove "device_type" property
> - move to bindings/memory-controllers
> ---
> .../memory-controllers/fsl,elbc-gpcm-uio.yaml | 59 ++++++++++++++++++++++
> 1 file changed, 59 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/memory-controllers/fsl,elbc-gpcm-uio.yaml b/Documentation/devicetree/bindings/memory-controllers/fsl,elbc-gpcm-uio.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..381584b400a0ad98c6d9e0b38f2877d44603ed84
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/memory-controllers/fsl,elbc-gpcm-uio.yaml
> @@ -0,0 +1,59 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/memory-controllers/fsl,elbc-gpcm-uio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Userspace I/O interface for Freescale eLBC devices
> +
> +description:
> + The Freescale Enhanced Local Bus controller (eLBC) supports flexible access
> + to memory devices, through the General-Purpose Chip-select Machine (GPCM).
> + The purpose of this binding is to designate devices attached to eLBC/GPMC for
> + use by userspace.
> +
> +maintainers:
> + - J. Neuschäfer <j.ne@posteo.net>
> +
> +properties:
> + compatible:
> + const: fsl,elbc-gpcm-uio
> +
> + reg:
> + maxItems: 1
> +
> + elbc-gpcm-br:
> + description: Base Register (BR) value to set
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + elbc-gpcm-or:
> + description: Option Register (OR) value to set
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + interrupts:
> + maxItems: 1
> +
> + uio_name:
> + $ref: /schemas/types.yaml#/definitions/string
> +
> +required:
> + - compatible
> + - reg
> + - elbc-gpcm-br
> + - elbc-gpcm-or
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + localbus {
> + #address-cells = <2>;
> + #size-cells = <1>;
> +
> + simple-periph@2,0 {
> + compatible = "fsl,elbc-gpcm-uio";
> + reg = <0x2 0x0 0x10000>;
> + elbc-gpcm-br = <0xfd810800>;
> + elbc-gpcm-or = <0xffff09f7>;
> + };
> + };
>
> --
> 2.48.0.rc1.219.gb6b6757d772
>
>