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

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Message-ID: <2f13c7fd-fa60-4151-ae1f-1a522e98b33e@kernel.org>
Date: Tue, 29 Jul 2025 15:09:10 +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 14:52, Ayush Singh wrote:
> On 7/29/25 18:16, Krzysztof Kozlowski wrote:
> 
>> 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.
> 
> Patch 4 is the dt bindings patch. I will reorder the patches in any 
> future to make the dt bindings patch 1.
> 
> Here is a direct link in case it got lost in mail: 
> https://lore.kernel.org/all/20250729-spi-bus-extension-v1-4-b20c73f2161a@beagleboard.org/


I found it, just did not spot as a binding because my filters expect
certain subjects (see submitting patches in DT subdir).

Best regards,
Krzysztof