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SubjectRE: [PATCH V1 Create empty OF root 0/1] XRT Alveo driver infrastructure overview
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Hi all,

Gentle ping. Are we okay with this series?

Will appreciate feedback as our next set of patches for Alveo is based on this feature.

Thanks,
-Sonal

> -----Original Message-----
> From: Lizhi Hou <lizhi.hou@xilinx.com>
> Sent: Monday, January 31, 2022 4:50 PM
> To: Lizhi Hou <lizhih@xilinx.com>; devicetree@vger.kernel.org;
> robh@kernel.org
> Cc: linux-kernel@vger.kernel.org; yilun.xu@intel.com; Max Zhen
> <maxz@xilinx.com>; Sonal Santan <sonals@xilinx.com>; Yu Liu
> <yliu@xilinx.com>; Michal Simek <michals@xilinx.com>; Stefano Stabellini
> <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
>
> 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+Q1Eie48dobv9sC5Oi
> zDz0d2DQ@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
> >
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