linux-kernel - Re: [PATCH v4] i2c/pasemi: PASemi I2C controller IRQ enablement

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Message-Id: <41e0d093-3bd4-444a-935e-01daae537c70@app.fastmail.com>
Date:   Sun, 06 Nov 2022 16:47:41 +0100
From:   "Sven Peter" <sven@...npeter.dev>
To:     "Arminder Singh" <arminders208@...look.com>,
        linux-kernel@...r.kernel.org
Cc:     linux-i2c@...r.kernel.org,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        linux-arm-kernel@...ts.infradead.org,
        "Paul Mackerras" <paulus@...ba.org>,
        "Benjamin Herrenschmidt" <benh@...nel.crashing.org>,
        "Michael Ellerman" <mpe@...erman.id.au>,
        "Alyssa Rosenzweig" <alyssa@...enzweig.io>,
        "Hector Martin" <marcan@...can.st>,
        "Christophe Leroy" <christophe.leroy@...roup.eu>,
        asahi@...ts.linux.dev
Subject: Re: [PATCH v4] i2c/pasemi: PASemi I2C controller IRQ enablement

Hi,

On Sat, Nov 5, 2022, at 12:56, Arminder Singh wrote:
> This patch adds IRQ support to the PASemi I2C controller driver to
> increase the performace of I2C transactions on platforms with PASemi I2C
> controllers. While primarily intended for Apple silicon platforms, this
> patch should also help in enabling IRQ support for older PASemi hardware
> as well should the need arise.
>
> This version of the patch has been tested on an M1 Ultra Mac Studio,
> as well as an M1 MacBook Pro, and userspace launches successfully
> while using the IRQ path for I2C transactions.
>
> Signed-off-by: Arminder Singh <arminders208@...look.com>

Thanks for following up on this! This looks good to me now.

Reviewed-by: Sven Peter <sven@...npeter.dev>



Best,


Sven