From: Lizhi Hou <lizhi.hou@xilinx.com>
To: Lizhi Hou <lizhi.hou@xilinx.com>, <devicetree@vger.kernel.org>,
<robh@kernel.org>
Cc: <linux-kernel@vger.kernel.org>, <yilun.xu@intel.com>,
<maxz@xilinx.com>, <sonal.santan@xilinx.com>, <yliu@xilinx.com>,
<michal.simek@xilinx.com>, <stefanos@xilinx.com>,
<trix@redhat.com>, <mdf@kernel.org>, <dwmw2@infradead.org>
Subject: Re: [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview
Date: Mon, 31 Jan 2022 16:49:53 -0800 [thread overview]
Message-ID: <17d60142-c72f-1a11-45de-e9a2974abeb8@xilinx.com> (raw)
In-Reply-To: <20220126054807.492651-1-lizhi.hou@xilinx.com>
Hi Rob,
We are still waiting for your feedback and guidance on this. Could you
take a look?
Thanks,
Lizhi
On 1/25/22 9:48 PM, Lizhi Hou wrote:
> Hello,
>
> Xilinx Alveo PCIe accelerator cards use flattened device tree to describe
> HW subsystems or endpoints. Each device tree node represents a hardware
> endpoint and each endpoint is an hardware unit which requires a driver.
> The product detail:
> https://www.xilinx.com/products/boards-and-kits/alveo.html
>
> The feedback from the previous patches was to create a base tree if there
> is not one and apply the unflattened device nodes by existing Linux
> platform device and OF infrastructure. Please refer to previous discussion
> with device tree and fpga maintainers.
> https://lore.kernel.org/lkml/CAL_JsqJfyRymB=VxLuQqLpep+Q1Eie48dobv9sC5OizDz0d2DQ@mail.gmail.com/
> https://lore.kernel.org/lkml/20220105225013.1567871-1-lizhi.hou@xilinx.com/
>
> This patch adds OF_EMPTY_ROOT config. When it is selected and there is not
> a device tree, create an empty device tree root node.
>
> Lizhi Hou (1):
> of: create empty of root
>
> drivers/of/Kconfig | 3 +++
> drivers/of/Makefile | 1 +
> drivers/of/of_empty_root.c | 51 ++++++++++++++++++++++++++++++++++++++
> 3 files changed, 55 insertions(+)
> create mode 100644 drivers/of/of_empty_root.c
>
next prev parent reply other threads:[~2022-02-01 0:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 5:48 [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview Lizhi Hou
2022-01-26 5:48 ` [PATCH V1 Create empty OF root 1/1] of: create empty of root Lizhi Hou
2022-02-11 15:38 ` Xu Yilun
2022-02-12 1:02 ` Lizhi Hou
2022-02-01 0:49 ` Lizhi Hou [this message]
2022-02-07 21:31 ` [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview Sonal Santan
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