From: Lizhi Hou <lizhi.hou@xilinx.com>
To: <devicetree@vger.kernel.org>, <robh@kernel.org>
Cc: Lizhi Hou <lizhi.hou@xilinx.com>, <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: [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview
Date: Tue, 25 Jan 2022 21:48:06 -0800 [thread overview]
Message-ID: <20220126054807.492651-1-lizhi.hou@xilinx.com> (raw)
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
--
2.27.0
next reply other threads:[~2022-01-26 5:48 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-26 5:48 Lizhi Hou [this message]
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 ` [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview Lizhi Hou
2022-02-07 21:31 ` Sonal Santan
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