Re: [PATCH v2 5/7] xen/arm: rcar4: add delay after programming ATU

2025-03-12 Thread Grygorii Strashko
On 11.03.25 12:24, Mykyta Poturai wrote: From: Volodymyr Babchuk For some reason, we need a delay before accessing ATU region after we programmed it. Otherwise, we'll get erroneous TLP. There is a code below, which should do this in proper way, by polling CTRL2 register, but according to do

Re: [PATCH v2 5/7] xen/arm: rcar4: add delay after programming ATU

2025-03-12 Thread Mykyta Poturai
On 12.03.25 12:12, Grygorii Strashko wrote: > > > On 11.03.25 12:24, Mykyta Poturai wrote: >> From: Volodymyr Babchuk >> >> For some reason, we need a delay before accessing ATU region after >> we programmed it. Otherwise, we'll get erroneous TLP. >> >> There is a code below, which should do t

[PATCH v2 5/7] xen/arm: rcar4: add delay after programming ATU

2025-03-11 Thread Mykyta Poturai
From: Volodymyr Babchuk For some reason, we need a delay before accessing ATU region after we programmed it. Otherwise, we'll get erroneous TLP. There is a code below, which should do this in proper way, by polling CTRL2 register, but according to documentation, hardware does not change this ATU