From: Michael Walle <michael@walle.cc>
To: apeksha.gupta@nxp.com
Cc: LnxRevLi@nxp.com, davem@davemloft.net, hemant.agrawal@nxp.com,
kuba@kernel.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org, nipun.gupta@nxp.com,
qiangqing.zhang@nxp.com, sachin.saxena@nxp.com,
Michael Walle <michael@walle.cc>
Subject: Re: [PATCH 0/5] drivers/net: add NXP FEC-UIO driver
Date: Thu, 11 Nov 2021 12:06:42 +0100 [thread overview]
Message-ID: <20211111110642.3340300-1-michael@walle.cc> (raw)
In-Reply-To: <20211110054838.27907-1-apeksha.gupta@nxp.com>
[linux-devel@linux.nxdi.nxp.com doesn't exist in the public, which is quite
annoying when you reply to an email and the MTA doesn't accept it due to
invalid domains]
> This patch series introduce the fec-uio driver, supported for the inbuilt
> NIC found in the NXP i.MX 8M Mini SoC. Basic hardware initialization is
> performed in kernel via userspace input/output(UIO) to support FEC
> ethernet device detection in user space.
Could you elaborate for what this driver is needed? Doesn't the imx8mm
already have a network driver? What is the difference between them?
As a user, I couldn't find what this is all about, neither in this
commit message nor in the Kconfig help text.
> Userspace PMD uses standard UIO interface to access kernel for PHY
> initialisation and for mapping the allocated memory of register &
> buffer descriptor with DPDK which gives access to non-cacheable memory
> for buffer descriptor.
>
> Module fec-uio.ko will get generated.
> imx8mm-evk-dpdk.dtb is required to support fec-uio driver.
-michael
prev parent reply other threads:[~2021-11-11 11:07 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-10 5:48 [PATCH 0/5] drivers/net: add NXP FEC-UIO driver Apeksha Gupta
2021-11-10 5:48 ` [PATCH 1/5] dt-bindings: add binding for fec-uio Apeksha Gupta
2021-11-10 5:48 ` [PATCH 2/5] net: fec: fec-uio driver Apeksha Gupta
2021-11-10 22:06 ` Andrew Lunn
2021-11-10 5:48 ` [PATCH 3/5] ARM64: defconfig: Add config for fec-uio Apeksha Gupta
2021-11-10 5:48 ` [PATCH 4/5] MAINTAINERS: add new file Apeksha Gupta
2021-11-10 5:48 ` [PATCH 5/5] arm64: dts: imx8mm-evk-dpdk: dts for fec-uio driver Apeksha Gupta
2021-11-10 22:11 ` Andrew Lunn
2021-11-11 11:06 ` Michael Walle [this message]
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