linux-kernel - Re: [PATCH 3/3] arm64: dts: rockchip: add dts for Ariaboard Photonicat RK3568

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Message-Id: <20240906035018.33211-1-amadeus@jmu.edu.cn>
Date: Fri,  6 Sep 2024 11:50:18 +0800
From: Chukun Pan <amadeus@....edu.cn>
To: bigfoot@...ssfun.cn
Cc: amadeus@....edu.cn,
	andrew@...n.ch,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	dsimic@...jaro.org,
	heiko@...ech.de,
	jonas@...boo.se,
	krzk+dt@...nel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH 3/3] arm64: dts: rockchip: add dts for Ariaboard Photonicat RK3568

Hi Junhao,

> I have tried rgmii-id with tx_delay/rx_delay 0x38/0x15, or 0x0/0x0,
> or directly removed tx_delay/rx_delay, they all didn't transmit data.
>
> I saw in dwmac-rk.c that when using rgmii-id, the tx_delay/rx_delay
> properties in dt are ignored?

When using rgmii-id mode, tx_delay and rx_delay can be removed directly.
But you need to test whether the rx/tx-internal-delay-ps is appropriate.

-- 
2.25.1