On 02/20/2019 05:59 PM, Stephen Warren wrote:
On 2/20/19 5:09 AM, Anton Gerasimov wrote:
Raspberry Pi bootloader adds this node to fdt, but if u-boot script
doesn't reuse the tree provided by it, this information is lost.
Revision and serial are displayed in /proc/cpuinfo after boot.
Are these properties documented in the upstream Linux kernel in
Documentation/devicetree/bindings/? If so, this patch is fine. If not,
we should not merge it, since we don't want to pollute the DT with
non-standard properties (or: add this to the upstream kernel DT
documentation, and then apply this patch once the doc update is
approved upstream).
Hm, it almost looks like it's a downstream hack. Unfortunately as U-Boot
we're in this really weird place where people may want to use it to load
downstream kernels.
I personally would be perfectly fine to just enable CONFIG_OF_BOARD by
default and defer people to $fdtcontroladdr. That way, they get the
firmware patched device tree automatically.
Alex
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