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Message-ID: <20240806165020.GA1664499-robh@kernel.org>
Date: Tue, 6 Aug 2024 10:50:20 -0600
From: Rob Herring <robh@...nel.org>
To: Marc Kleine-Budde <mkl@...gutronix.de>
Cc: kernel@...gutronix.de, Vincent Mailhol <mailhol.vincent@...adoo.fr>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Elaine Zhang <zhangqing@...k-chips.com>,
	David Jander <david.jander@...tonic.nl>,
	Simon Horman <horms@...nel.org>, linux-can@...r.kernel.org,
	netdev@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH can-next v2 01/20] dt-bindings: can: rockchip_canfd: add
 rockchip CAN-FD controller

On Wed, Jul 31, 2024 at 11:37:03AM +0200, Marc Kleine-Budde wrote:
> Add documentation for the rockchip rk3568 CAN-FD controller.
> 
> Co-developed-by: Elaine Zhang <zhangqing@...k-chips.com>
> Signed-off-by: Elaine Zhang <zhangqing@...k-chips.com>
> Signed-off-by: Marc Kleine-Budde <mkl@...gutronix.de>
> ---
>  .../bindings/net/can/rockchip,canfd.yaml           | 76 ++++++++++++++++++++++

rockchip,rk3568-canfd.yaml

>  MAINTAINERS                                        |  7 ++
>  2 files changed, 83 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/rockchip,canfd.yaml b/Documentation/devicetree/bindings/net/can/rockchip,canfd.yaml
> new file mode 100644
> index 000000000000..444269f630f4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/can/rockchip,canfd.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/can/rockchip,canfd.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title:
> +  Rockchip CAN-FD controller
> +
> +maintainers:
> +  - Marc Kleine-Budde <mkl@...gutronix.de>
> +
> +allOf:
> +  - $ref: can-controller.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - const: rockchip,rk3568-canfd
> +      - items:
> +          - enum:
> +              - rockchip,rk3568v2-canfd
> +              - rockchip,rk3568v3-canfd
> +          - const: rockchip,rk3568-canfd

Given you already know there are differences in the versions to handle 
and there's no existing driver supporting the fallback, I don't know 
that a fallback is too useful here.

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: baud
> +      - const: pclk
> +
> +  resets:
> +    maxItems: 2
> +
> +  reset-names:
> +    items:
> +      - const: core
> +      - const: apb
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - resets
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/rk3568-cru.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        can0: can@...70000 {

Drop unused labels.

> +            compatible = "rockchip,rk3568-canfd";
> +            reg = <0x0 0xfe570000 0x0 0x1000>;
> +            interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
> +            clocks = <&cru CLK_CAN0>, <&cru PCLK_CAN0>;
> +            clock-names = "baud", "pclk";
> +            resets = <&cru SRST_CAN0>, <&cru SRST_P_CAN0>;
> +            reset-names = "core", "apb";
> +        };
> +    };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index c0a3d9e93689..d225dc39bd89 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -19694,6 +19694,13 @@ F:	Documentation/ABI/*/sysfs-driver-hid-roccat*
>  F:	drivers/hid/hid-roccat*
>  F:	include/linux/hid-roccat*
>  
> +ROCKCHIP CAN-FD DRIVER
> +M:	Marc Kleine-Budde <mkl@...gutronix.de>
> +R:	kernel@...gutronix.de
> +L:	linux-can@...r.kernel.org
> +S:	Maintained
> +F:	Documentation/devicetree/bindings/net/can/rockchip,canfd.yaml
> +
>  ROCKCHIP CRYPTO DRIVERS
>  M:	Corentin Labbe <clabbe@...libre.com>
>  L:	linux-crypto@...r.kernel.org
> 
> -- 
> 2.43.0
> 
> 

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