linux-kernel - Re: [PATCH 3/4] spi: Handle spi bus extension

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Message-ID: <c90da4f4-a402-43db-8375-575801ac2714@kernel.org>
Date: Tue, 29 Jul 2025 14:46:09 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ayush Singh <ayush@...gleboard.org>, Mark Brown <broonie@...nel.org>,
 herve.codina@...tlin.com, luca.ceresoli@...tlin.com, conor+dt@...nel.org,
 Jason Kridner <jkridner@...gleboard.org>,
 Deepak Khatri <lorforlinux@...gleboard.org>, Dhruva Gole <d-gole@...com>,
 Robert Nelson <robertcnelson@...gleboard.org>, Andrew Davis <afd@...com>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH 3/4] spi: Handle spi bus extension

On 29/07/2025 11:51, Ayush Singh wrote:
>  	for_each_available_child_of_node(node, nc) {
> +		/* Filter out extension node */
> +		if (of_node_name_eq(nc, "spi-bus-extension"))
> +			continue;
> +
>  		if (of_node_test_and_set_flag(nc, OF_POPULATED))
>  			continue;
>  
> @@ -2541,6 +2549,23 @@ static void of_register_spi_children(struct spi_controller *ctlr,
>  			of_node_clear_flag(nc, OF_POPULATED);
>  		}
>  	}
> +
> +	/* Look at extensions */
> +	for_each_available_child_of_node(node, nc) {
> +		if (!of_node_name_eq(nc, "spi-bus-extension"))

Where did you document the new ABI? There is no DT bindings patch with it.


Best regards,
Krzysztof