Dear Felix,
In message 1b0d33fa-adfb-9825-5ae8-8bded1678c0c@ltec.ch you wrote:
This needs to be rewritten.
To try and help clarify, the property in question means "quantity to shift the register offsets by." It should be clear in our Kconfig help entry as well that this is what we're looking for.
Thanks for this! The help text will be fixed in v2.
None of the places I could find in the Linux Documentation/devicetree/bindings directory actually explains what "shift the register offsets" means. Only the code reveals that this means a LEFT shift of the register address (offset).
At least one place in Linux interprets <reg-shift> differently; here it operates on the _data_ (instead there they use <reg-spacing>):
"devicetree/bindings/ipmi/ipmi-smic.txt":
- reg-shift - The amount to shift the registers to the right to get the data into bit zero.
(see ipmi_si_mem_io.c
So can we please add an explanation what _exactly_ this means?
Thanks.
Wolfgang Denk