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Message-ID: <0c7428dc-736e-c5c4-13e7-b42052c60cd7@ysoft.com> Date: Fri, 15 Feb 2019 16:01:08 +0100 From: Michal Vokáč <michal.vokac@...ft.com> To: Vinod Koul <vkoul@...nel.org>, Andrew Lunn <andrew@...n.ch> Cc: "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Florian Fainelli <f.fainelli@...il.com> Subject: [RFC] net: dsa: qca8k: implement rgmii-id mode Hi, networking on my boards [1], which are currently in linux-next, suddently stopped working. I tracked it down to this commit 5ecdd77c61c8 ("net: dsa: qca8k: disable delay for RGMII mode") [2]. So I think the rgmii-id mode is obviously needed in my case. I was able to find a couple drivers that read tx/rx-delay or tx/rx-internal-delay from device tree. Namely: drivers/net/ethernet/apm/xgene/xgene_enet_main.c drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c drivers/net/phy/dp83867.c I would appreciate any hints how to add similar function to qca8k driver if that is the correct way to go. Can I take some of the above mentioned drivers as a good example for that? How should the binding look like? I would expect something like this: switch@0 { compatible = "qca,qca8334"; reg = <0>; switch_ports: ports { #address-cells = <1>; #size-cells = <0>; ethphy0: port@0 { reg = <0>; label = "cpu"; phy-mode = "rgmii-id"; qca,tx-delay = <3>; qca,rx-delay = <3>; ethernet = <&fec>; }; }; Thanks in advance, Michal [1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=87489ec3a77f3e01bcf0d46e353ae7112ec8c4f0 [2] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/net/dsa/qca8k.c?id=5ecdd77c61c8fe1d75ded538701e5e854963c890
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