Re: [PATCH 04/10] dt-bindings: memory: mt7621: add syscon as compatible string

Arınç ÜNAL
2022-09-15T06:25:28Z

On 15.09.2022 06:21, Sergio Paracuellos wrote:
> On Wed, Sep 14, 2022 at 5:19 PM Arınç ÜNAL <arinc.unal@arinc9.com> wrote:
>>
>> On 14.09.2022 18:14, Rob Herring wrote:
>>> On Wed, Sep 14, 2022 at 11:54:45AM +0300, Arınç ÜNAL wrote:
>>>> Add syscon as a constant string on the compatible property as it's required
>>>> for the SoC to work. Update the example accordingly.
>>>
>>> It's not required. It's required to automagically create a regmap. That
>>> can be done yourself as well. The downside to adding 'syscon' is it
>>> requires a DT update. Maybe that's fine for this platform? I don't know.
>>
>> My GB-PC2 won't boot without syscon on mt7621.dtsi. This string was
>> always there on the memory controller node on mt7621.dtsi.
>
> The string was introduced because the mt7621 clock driver needs to
> read some registers creating a regmap from the syscon. The bindings
> were added before the clock driver was properly mainlined and at first
> the clock driver was using ralink architecture dependent operations
> rt_memc_* defined in
> 'arch/mips/include/asm/mach-ralink/ralink_regs.h'. I forgot to update
> the mem controller binding when memc became a syscon so I think this
> patch is correct. I also think the sample should use 'syscon' in the
> node name instead of memory-controller.

Will change to syscon in v2.

Arınç