From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Frank Li <Frank.Li@nxp.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
linux-i3c@lists.infradead.org (moderated list:SILVACO I3C
DUAL-ROLE MASTER),
imx@lists.linux.dev (open list:SILVACO I3C DUAL-ROLE MASTER),
linux-kernel@vger.kernel.org (open list)
Subject: Re: [PATCH v2 1/1] i3c: master: svc: skip address resend on repeat START
Date: Mon, 12 May 2025 11:25:16 +0200 [thread overview]
Message-ID: <877c2mmb9f.fsf@bootlin.com> (raw)
In-Reply-To: <20250429054234.4013929-1-Frank.Li@nxp.com> (Frank Li's message of "Tue, 29 Apr 2025 01:42:34 -0400")
On 29/04/2025 at 01:42:34 -04, Frank Li <Frank.Li@nxp.com> wrote:
> According to the I3C specification, address arbitration only happens during
> the START. Repeated START do not initiate arbitration, and In-Band
> Interrupts (IBIs) cannot occur at this stage.
>
> Resending the address upon a NACK in a repeat START is therefore redundant
> and unnecessary. Avoid redundant retries, improving efficiency and ensuring
> protocol compliance.
>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Frank Li <Frank.Li@nxp.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>,
linux-i3c@lists.infradead.org (moderated list:SILVACO I3C
DUAL-ROLE MASTER),
imx@lists.linux.dev (open list:SILVACO I3C DUAL-ROLE MASTER),
linux-kernel@vger.kernel.org (open list)
Subject: Re: [PATCH v2 1/1] i3c: master: svc: skip address resend on repeat START
Date: Mon, 12 May 2025 11:25:16 +0200 [thread overview]
Message-ID: <877c2mmb9f.fsf@bootlin.com> (raw)
In-Reply-To: <20250429054234.4013929-1-Frank.Li@nxp.com> (Frank Li's message of "Tue, 29 Apr 2025 01:42:34 -0400")
On 29/04/2025 at 01:42:34 -04, Frank Li <Frank.Li@nxp.com> wrote:
> According to the I3C specification, address arbitration only happens during
> the START. Repeated START do not initiate arbitration, and In-Band
> Interrupts (IBIs) cannot occur at this stage.
>
> Resending the address upon a NACK in a repeat START is therefore redundant
> and unnecessary. Avoid redundant retries, improving efficiency and ensuring
> protocol compliance.
>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
--
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next prev parent reply other threads:[~2025-05-12 9:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-29 5:42 [PATCH v2 1/1] i3c: master: svc: skip address resend on repeat START Frank Li
2025-04-29 5:42 ` Frank Li
2025-05-12 9:25 ` Miquel Raynal [this message]
2025-05-12 9:25 ` Miquel Raynal
2025-05-15 9:56 ` Alexandre Belloni
2025-05-15 9:56 ` Alexandre Belloni
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