Re: [PATCH RFC] ARM: BCM5301X: Add /device_id property including device ID string

On 30 March 2015 at 12:37, Mark Rutland [off-list ref] wrote:

For DT patches, please send to devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; this affects
more than just ARM.

Ofc, sorry.

On Sun, Mar 29, 2015 at 11:14:48PM +0100, Rafał Miłecki wrote:

quoted

Device vendors often assign IDs to their devices to allow comparing
firmware image with device model. This is required to prevent users
from flashing incompatible image and soft-bricking device.
Add device_id property to DTs to allow user space (and optionally
bootloader) verifying firmware images.

This sounds like exactly what the "model" property is meant to be (per
ePAPR) -- a string that specifices the manufacturer's model number of
the device, ideally in "manufacturer,model" format.

What if manufacturer decided to use some totally unfriendly ID for
their low-level (firmware upgrade) model identification? I can't
really see us using
model = "U12H245T00_NETGEAR"
which would mean nothing compared to the current friendly:
model = "Netgear R6250 V1 (BCM4708)"
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