linux-kernel - Re: [RFC PATCH 0/3] i2c: Introduce i2c bus extensions

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Message-ID: <20250613093016.43230e3b@bootlin.com>
Date: Fri, 13 Jun 2025 09:30:16 +0200
From: Herve Codina <herve.codina@...tlin.com>
To: Ayush Singh <ayush@...gleboard.org>
Cc: conor+dt@...nel.org, devicetree@...r.kernel.org, krzk+dt@...nel.org,
 linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
 luca.ceresoli@...tlin.com, robh@...nel.org, thomas.petazzoni@...tlin.com,
 wsa+renesas@...g-engineering.com
Subject: Re: [RFC PATCH 0/3] i2c: Introduce i2c bus extensions

Hi Ayush,

On Thu, 12 Jun 2025 13:22:45 +0530
Ayush Singh <ayush@...gleboard.org> wrote:

> I have tested this patch series for use with pocketbeagle 2 connector 
> driver [0]. To get a better idea how it looks in real devicetree, see 
> the base tree [1] and the overlay [2]. Since it also used gpio and pwm 
> nexus nodes, along with providing pinmux for pins, it can provide a 
> better picture of how the different pieces (export-symbols, nexus nodes, 
> etc) look when combined.

Nice. Happy to see that I am no more alone with a system using these
features.

> 
> 
> I also have a question for Herve. Do you already have any working 
> patches for similar extension for SPI and UART in some private tree?

No, I didn't do anything related to SPI nor UART.

On my system, no SPI nor UART are wired to my connector and so, I haven't
got any needs to implement extension busses for SPI an UART (serial dev bus)
nor any support for nexus nodes for other kind of components.

Best regards,
Hervé