netdev - Re: Possible race condition of the rockchip

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Message-ID: <20250929-curvy-cicada-of-sufficiency-a7f464-mkl@pengutronix.de>
Date: Mon, 29 Sep 2025 10:22:15 +0200
From: Marc Kleine-Budde <mkl@...gutronix.de>
To: Andrea Daoud <andreadaoud6@...il.com>
Cc: Heiko Stuebner <heiko@...ech.de>, 
	Elaine Zhang <zhangqing@...k-chips.com>, kernel@...gutronix.de, linux-can@...r.kernel.org, 
	netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	Alexander Shiyan <eagle.alexander923@...il.com>
Subject: Re: Possible race condition of the rockchip_canfd driver

On 28.09.2025 00:26:59, Andrea Daoud wrote:
> > Alexander Shiyan (Cc'ed) reads the information from an nvmem cell:
> >
> > | https://github.com/MacroGroup/barebox/blob/macro/arch/arm/boards/diasom-rk3568/board.c#L239-L257
> >
> > The idea is to fixup the device tree in the bootloader depending on the
> > SoC revision, so that the CAN driver uses only the needed workarounds.
> 
> Thanks, it is not easy to correlate this because I am currently not using
> barebox. I'll try this later.

The most important information in this code is where the SoC revision is
located: there is a separate nvmem cell for this. You can read out the
information once manually and change your device tree accordingly.

regards,
Marc

-- 
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