[PATCH 2/4] hwrng: stm32 - implement support for STM32MP25x platforms

[Marek Vasut]

On 10/11/24 11:55 AM, Gatien CHEVALLIER wrote:
> 
> 
> On 10/7/24 15:54, Marek Vasut wrote:
>> On 10/7/24 3:27 PM, Gatien Chevallier wrote:
>>> Implement the support for STM32MP25x platforms. On this platform, a
>>> security clock is shared between some hardware blocks. For the RNG,
>>> it is the RNG kernel clock. Therefore, the gate is no more shared
>>> between the RNG bus and kernel clocks as on STM32MP1x platforms and
>>> the bus clock has to be managed on its own.
>>>
>>> Signed-off-by: Gatien Chevallier <gatien.chevallier at foss.st.com>
>> A bit of a higher-level design question -- can you use drivers/clk/ 
>> clk-bulk.c clk_bulk_*() to handle all these disparate count of clock 
>> easily ?
> 
> Hi, I'd like to make sure that we enable the core clock before the bus
> clock so that the RNG hardware block can start its internal tests while
> we ungate the bus clock. It's not a strong opinion but it feels better.
Maybe this could still work if the struct clk_bulk_data {} is ordered 
that way, so the bus clock are first, and the rest afterward ?