Re: [PATCH v6 4/4] arm64: dts: rockchip: Enable CAN controller on RK3588-Tiger-Haikou

Quentin Schulz <[email protected]> Thu, 30 Jul 2026 17:21:35 +0200

Newsgroups	org.kernel.vger.linux-can,org.infradead.lists.linux-arm-kernel,org.infradead.lists.linux-rockchip,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

Hi Cunhao,

On 7/30/26 4:34 PM, Cunhao Lu wrote:
> From: Heiko Stuebner <[email protected]>
> 
> CAN0 is piped through the Q7 connector to the CAN header on the Haikou
> baseboard, so enable support for it there.
> 
> At least on RK3588 Tiger, the CAN clocks default to 99 MHz, limiting
> usable CAN bitrates without skew. The RK3568 errata documentation
> mentions 300 MHz as the default frequency, so request the same rate to
> allow more bitrates.
> 
> The CAN clock setup is common to the Tiger SoM regardless of which
> carrier board exposes CAN0, so place it in rk3588-tiger.dtsi. Keep CAN0
> disabled by default and enable it in rk3588-tiger-haikou.dts, where the
> carrier board routes it to a transceiver.
> 

Reviewed-by: Quentin Schulz <[email protected]>

Thanks!
Quentin