Hi Boris,
Thank you very much for the review comments and your time...
On 7/5/2020 2:27 pm, Boris Brezillon wrote:
On Thu, 7 May 2020 14:13:42 +0800
"Ramuthevar, Vadivel MuruganX"
<vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote:
Hi Boris,
Thank you very much for the review comments and your time...
On 7/5/2020 1:28 pm, Boris Brezillon wrote:
On Thu, 7 May 2020 08:15:37 +0800
"Ramuthevar,Vadivel MuruganX"
<vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote:
+ reg = readl(ebu_host->ebu + EBU_ADDR_SEL(ebu_host->cs_num));
+ writel(reg | EBU_ADDR_MASK(5) | EBU_ADDR_SEL_REGEN,
+ ebu_host->ebu + EBU_ADDR_SEL(ebu_host->cs_num));
Seriously, did you really think I would not notice what you're doing
here?
Yes , I know that you have very good understanding about this.
You're reading the previous value which either contains a default
mapping or has the mapping set by the bootloader, and write it back to
the register along with a new mask and the REGEN bit set (which
BTW is wrong since you don't mask out other fields before updating
them).
There is no other field get overwritten
This confirms that this Core -> FPI address translation exists
and has to be set properly, so please stop lying about that.
Sorry, there is no SW translation, as I have mentioned that it's
optional only, for safer side , reading and writing the default values.
Then write EBU_ADDR_SEL_REGEN and we'll if see that works. I suspect it
won't.
You mean, without reading just writing EBU_ADDR_SEL_REGEN bit alone in
EBU_ADDR_SELx , as you said it won't work because it overwrites 0x174
with 0x0 values so BASE is lost.
either we can leave it or read & write with ORed | EBU_ADDR_SEL_REGEN
Please correct me if anything is wrong, Thanks!
The memory region to enabled that's my concern so written the same
register values.
I don't buy that, sorry.
This will not be impact other fields, so please see below for reference
The EBU Address Select Registers EBU_ADDR_SEL_0 to EBU_ADDSEL3 establish
and control memory regions for external accesses.
Reset Value: 17400001H
See, as suspected the reset value is exactly what you expect.
Yes , that's the reason said being optional.
Regards
Vadivel
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