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From: "Leonidas P. Papadakos" <papadakospan@gmail.com>
To: Peter Geis <pgwipeout@gmail.com>
Cc: Jose Abreu <jose.abreu@synopsys.com>,
	devicetree@vger.kernel.org, Heiko Stuebner <heiko@sntech.de>,
	linux-rockchip@lists.infradead.org,
	Rob Herring <robh+dt@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] arm64: dts: rockchip: improve rk3328-roc-cc rgmii performance.
Date: Sat, 15 Jun 2019 00:27:11 +0300
Message-ID: <1560547631.1367.4@gmail.com> (raw)
In-Reply-To: <CAMdYzYorvWr1YhmFKaMQUCditjop5AZp4d1tO79XsVr7m7HrMw@mail.gmail.com>



> The big change was actually snps,aal.
> As per the TRM, DMA channels not address aligned have severe
> limitations, if they work at all.
> 
> Setting the DMA ops as address aligned fixed my 30mbps TX issue when
> combined with your snps,txpbl = <0x4>.

Honestly, I don't notice any difference either way with aal. So what 
happens without it? If You only use the 0x4 txpbl and having removed 
thresh dma mode, (2 things then) do you get bad tx?



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Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-07 12:37 Peter Geis
2019-06-07 12:58 ` Leonidas P. Papadakos
2019-06-07 23:07   ` Peter Geis
2019-06-14  9:39     ` Heiko Stuebner
2019-06-14 19:49       ` Leonidas P. Papadakos
2019-06-14 21:27     ` Leonidas P. Papadakos [this message]
2019-06-15 12:12       ` Peter Geis
2019-06-15 13:32         ` Jonas Karlman

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