[meta-xilinx] Integration of PL device in the Device Tree (Yocto)

[Giuseppe Di Guglielmo]

Peter, I am giving a look at it.

I could not find a "guide" for using it (I am new to Yocto thus I need a
little support). Do you have any pointer?

On Wed, Apr 19, 2017 at 2:49 PM, Giuseppe Di Guglielmo <
giuseppe.diguglielmo at gmail.com> wrote:

> Jeff,
> I do not know yet if I want to go to that extent. For sure, I have my own
> PL devices and their device drivers. I was wondering if there is a stardar
> way in Yocto to patch:
> build/tmp/work/zc702_zynq7-poky-linux-gnueabi/u-boot-
> xlnx/v2016.07-xilinx-v2016.3+gitAUTOINC+95e11f6eb4-r0/git/
> arch/arm/dts/zynq-zc702.dts
> (for example) with my own DTS node for a specific PL device.
>
> Peter, I am
>
> On Wed, Apr 19, 2017 at 2:42 PM, Jean-Francois Dagenais <
> jeff.dagenais at gmail.com> wrote:
>
>>
>> On Apr 19, 2017, at 14:35, Giuseppe Di Guglielmo <
>> giuseppe.diguglielmo at gmail.com> wrote:
>>
>> I am familiar with the "manula" flow for the device tree compilation
>> (dts/dtsi, dct, etc.) but I do not know how to integrate my own device
>> using the Yocto flow. I am using a Zynq (zc702) board. Do you have any
>> reference or suggestion?
>>
>>
>> We have a forked clone of the linux-xlnx kernel where we maintain our
>> custom (including PL nodes) dts file.
>>
>> It makes sense since we also maintain custom drivers and mods.
>>
>> I mad a linux-abc recipe which is copied from linux-yocto-custom.bb,
>> then I use defconfigs.
>>
>> I manually have to track which linux repo sha-1 I use when I change my
>> kernel or merge in linux-xlnx changes, as well as have to observe how the
>> resulting .config of meta-xilinx's linux-xlnx recipe changes to maintain
>> our defconfigs. It's a trade-off. For me the advantage is full control and
>> very easy to predict and change.
>>
>> Cheers!
>>
>>
>
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