linux-kernel - Re: [PATCH v4 1/4] dt-bindings: soc: Add bindings for Airoha SCU Serdes lines

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Message-ID: <20251107-crisping-doable-365d6b7d60a6@spud>
Date: Fri, 7 Nov 2025 18:14:31 +0000
From: Conor Dooley <conor@...nel.org>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Lorenzo Bianconi <lorenzo@...nel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/4] dt-bindings: soc: Add bindings for Airoha SCU
 Serdes lines

On Fri, Nov 07, 2025 at 05:02:43PM +0100, Christian Marangi wrote:
> The Airoha AN7581 SoC can configure the SCU serdes lines for multiple
> purpose. For example the Serdes for the USB1 port can be both
> used for USB 3.0 operation or for Ethernet. Or the USB2 serdes can both
> used for USB 3.0 operation or for PCIe.
> 
> The PCIe Serdes can be both used for PCIe operation or for Ethernet.
> 
> Add bindings to permit correct reference of the different ports in DT,
> mostly to differentiate the different supported modes internally to the
> drivers.
> 
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> ---
>  include/dt-bindings/soc/airoha,scu-ssr.h | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>  create mode 100644 include/dt-bindings/soc/airoha,scu-ssr.h
> 
> diff --git a/include/dt-bindings/soc/airoha,scu-ssr.h b/include/dt-bindings/soc/airoha,scu-ssr.h
> new file mode 100644
> index 000000000000..a14cef465dad
> --- /dev/null
> +++ b/include/dt-bindings/soc/airoha,scu-ssr.h
> @@ -0,0 +1,11 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +
> +#ifndef __DT_BINDINGS_AIROHA_SCU_SSR_H
> +#define __DT_BINDINGS_AIROHA_SCU_SSR_H
> +
> +#define AIROHA_SCU_SERDES_PCIE1		0
> +#define AIROHA_SCU_SERDES_PCIE2		1
> +#define AIROHA_SCU_SERDES_USB1		0
> +#define AIROHA_SCU_SERDES_USB2		1

I'm going to assume that 01 01 is correct here.
Acked-by: Conor Dooley <conor.dooley@...rochip.com>

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