On Thu, Jul 25, 2019 at 2:32 AM Nicolin Chen nicoleotsuka@gmail.com wrote:
On Mon, Jul 22, 2019 at 03:48:32PM +0300, Daniel Baluta wrote:
New IP version introduces Version ID and Parameter registers and optionally added Timestamp feature.
VERID and PARAM registers are placed at the top of registers address space and some registers are shifted according to the following table:
Tx/Rx data registers and Tx/Rx FIFO registers keep their addresses, all other registers are shifted by 8.
Feels like Lucas's approach is neater. I saw that Register TMR at 0x60 is exceptional during your previous discussion. So can we apply an offset-cancellation for it exceptionally? I haven't checked all the registers so this would look okay to me as well if there are more than just Register TMR.
It is not just TMR exceptional. There are like half of the registers. Thus: half of the registers need to be shifted and half of them need to stay the same as in previous version of SAI.
I'm not seeing yet a neater approach. Lucas idea would somehow work if regmap will allow some sort of translation function applied over registers before being accessed.
Maybe Mark has some clues here?
thanks, daniel.