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Date:   Wed, 24 Feb 2021 23:48:31 -0300
From:   Fabio Estevam <>
To:     Sasha Levin <>
Cc:     linux-kernel <>,
        stable <>,
        Joakim Zhang <>,
        Marc Kleine-Budde <>,, netdev <>
Subject: Re: [PATCH AUTOSEL 5.11 05/67] can: flexcan: add CAN wakeup function
 for i.MX8QM

Hi Sasha,

On Wed, Feb 24, 2021 at 10:35 PM Sasha Levin <> wrote:
> From: Joakim Zhang <>
> [ Upstream commit 812f0116c66a3ebaf0b6062226aa85574dd79f67 ]
> The System Controller Firmware (SCFW) is a low-level system function
> which runs on a dedicated Cortex-M core to provide power, clock, and
> resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
> (QM, QP), and i.MX8QX (QXP, DX). SCU driver manages the IPC interface
> between host CPU and the SCU firmware running on M4.
> For i.MX8QM, stop mode request is controlled by System Controller Unit(SCU)
> firmware, this patch introduces FLEXCAN_QUIRK_SETUP_STOP_MODE_SCFW quirk
> for this function.
> Signed-off-by: Joakim Zhang <>
> Link:
> Signed-off-by: Marc Kleine-Budde <>
> Signed-off-by: Sasha Levin <>

This is adding a new feature and not fixing a bug.

Why does it qualify for stable inclusion?

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