Re: [PATCH AUTOSEL 5.11 05/67] can: flexcan: add CAN wakeup function for i.MX8QM
From: Fabio Estevam
Date: Wed Feb 24 2021 - 21:49:52 EST
Hi Sasha,
On Wed, Feb 24, 2021 at 10:35 PM Sasha Levin <sashal@xxxxxxxxxx> wrote:
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From: Joakim Zhang <qiangqing.zhang@xxxxxxx>
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[ Upstream commit 812f0116c66a3ebaf0b6062226aa85574dd79f67 ]
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The System Controller Firmware (SCFW) is a low-level system function
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which runs on a dedicated Cortex-M core to provide power, clock, and
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resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
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(QM, QP), and i.MX8QX (QXP, DX). SCU driver manages the IPC interface
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between host CPU and the SCU firmware running on M4.
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For i.MX8QM, stop mode request is controlled by System Controller Unit(SCU)
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firmware, this patch introduces FLEXCAN_QUIRK_SETUP_STOP_MODE_SCFW quirk
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for this function.
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Signed-off-by: Joakim Zhang <qiangqing.zhang@xxxxxxx>
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Link: https://lore.kernel.org/r/20201106105627.31061-6-qiangqing.zhang@xxxxxxx
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Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
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Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
This is adding a new feature and not fixing a bug.
Why does it qualify for stable inclusion?