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Message-ID: <20240122-surely-crimp-ba4a8c55106d-mkl@pengutronix.de>
Date: Mon, 22 Jan 2024 14:13:16 +0100
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Conor Dooley <conor@...nel.org>
Cc: linux-riscv@...ts.infradead.org,
Conor Dooley <conor.dooley@...rochip.com>, Daire McNamara <daire.mcnamara@...rochip.com>,
Wolfgang Grandegger <wg@...ndegger.com>, "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, linux-can@...r.kernel.org,
netdev@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-clk@...r.kernel.org
Subject: Re: [PATCH v2 2/7] dt-bindings: can: mpfs: add missing required clock
On 22.01.2024 12:19:50, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley@...rochip.com>
>
> The CAN controller on PolarFire SoC has an AHB peripheral clock _and_ a
> CAN bus clock. The bus clock was omitted when the binding was written,
> but is required for operation. Make up for lost time and add it.
>
> Cautionary tale in adding bindings without having implemented a real
> user for them perhaps.
>
> Fixes: c878d518d7b6 ("dt-bindings: can: mpfs: document the mpfs CAN controller")
> Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
> .../devicetree/bindings/net/can/microchip,mpfs-can.yaml | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml b/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
> index 45aa3de7cf01..01e4d4a54df6 100644
> --- a/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
> +++ b/Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
> @@ -24,7 +24,9 @@ properties:
> maxItems: 1
>
> clocks:
> - maxItems: 1
> + items:
> + - description: AHB peripheral clock
> + - description: CAN bus clock
What about adding clock-names, so that the order can be checked
automatically?
>
> required:
> - compatible
> @@ -39,7 +41,7 @@ examples:
> can@...0c000 {
> compatible = "microchip,mpfs-can";
> reg = <0x2010c000 0x1000>;
> - clocks = <&clkcfg 17>;
> + clocks = <&clkcfg 17>, <&clkcfg 37>;
> interrupt-parent = <&plic>;
> interrupts = <56>;
> };
> --
> 2.43.0
>
>
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
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