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

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Message-ID: <Z6pXSWQdJCS9ZXOJ@lizhi-Precision-Tower-5810>
Date: Mon, 10 Feb 2025 14:45:13 -0500
From: Frank Li <Frank.li@....com>
To: j.ne@...teo.net
Cc: devicetree@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	Krzysztof Kozlowski <krzk@...nel.org>, imx@...ts.linux.dev,
	Scott Wood <oss@...error.net>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Naveen N Rao <naveen@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Damien Le Moal <dlemoal@...nel.org>,
	Niklas Cassel <cassel@...nel.org>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>, Lee Jones <lee@...nel.org>,
	Vinod Koul <vkoul@...nel.org>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Krzysztof Wilczyński <kw@...ux.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	J. Neuschäfer <j.neuschaefer@....net>,
	Wim Van Sebroeck <wim@...ux-watchdog.org>,
	Guenter Roeck <linux@...ck-us.net>, Mark Brown <broonie@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>, linux-kernel@...r.kernel.org,
	linux-ide@...r.kernel.org, linux-crypto@...r.kernel.org,
	dmaengine@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-watchdog@...r.kernel.org, linux-spi@...r.kernel.org,
	linux-mtd@...ts.infradead.org
Subject: Re: [PATCH v2 10/12] dt-bindings: memory-controllers: Add
 fsl,elbc-gpcm-uio

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

Reviewed-by: Frank Li <Frank.Li@....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@...teo.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
>
>