Rockchip USB revisited

[Michael Grunditz]

In message <ZBmIX8qT0sgPqjS5 at genode-labs.com>
          Stefan Kalkowski <stefan.kalkowski at genode-labs.com> wrote:

> Hi Michael,

> On Mon, Mar 20, 2023 at 03:29:48PM +0100, Michael Grunditz wrote:
>> Hi again,
>> 
>> How does the dts extraction work? I would like to have a local copy in
>> the repo.. In order to build the driver I needed to do brute force
>> hacks into dde_linux.. can I override files from it in my repo?

> We provide a device tree source extraction tool in `tool/dts/extract`.
> You can see how it is used, e.g., within
> `genode-imx/src/drivers/linux_mnt_reform2_drv_target.inc` at the end
> of the file.

> First you need to preprocess the Linux original device tree source,
> and then use `extract --select XXX --select YYY` to extract the nodes
> and their transitive closure you're interested in.
Ok. I tried my best to get the dts to be included but all I got was empty 
file. I actually injected it to th kernel tree that I have on my vps ( 
tarball)



> Regarding the shadowing of files within dde_linux: I would
> try to avoid that as far as possible to stay update compliant. Maybe
> you can explain in more detail where it doesn't fit your needs?
> But of course it is possible to use or not use whatever shadow file
> exists within dde_linux. In that case you might need to avoid the
> usage of `repos/dde_linux/lib/import/import-lx_emul_common.inc`, and
> define your own stripped version of it defining what file is included
> exactly.

OK. Yes I don't want to hack in dde_linux, but on the other hand, it isn't 
goood to patch the kernel in page handling. I will make a diff next week 
so you can look at it. I added a couple of things to pg_table and page. 
The thing is , I am using a newer kernel than the one you use for 
alwinner.

I can use the public kernel , since it got the required phy driver.
I just got the little task to bring up PCIe on rk3399 -:) So I will be 
occupied with that for a while.


-- 
Best regards,
Michael Grunditz

**  **