[PATCH v2 1/3] PCI/pwrctrl: Add optional slot clock to pwrctrl driver for PCI slots

[Marek Vasut]

On 6/4/25 10:40 AM, Geert Uytterhoeven wrote:
> Hi Marek,

Hi,

> Thanks for your patch!
> 
> On Sat, 31 May 2025 at 00:55, Marek Vasut
> <marek.vasut+renesas at mailbox.org> wrote:
>> Add the ability to enable optional slot clock into the pwrctrl driver.
>> This is used to enable slot clock in split-clock topologies, where the
>> PCIe host/controller supply and PCIe slot supply are not provided by
>> the same clock. The PCIe host/controller clock should be described in
>> the controller node as the controller clock, while the slot clock should
>> be described in controller bridge/slot subnode.
>>
>> Example DT snippet:
>> &pcicontroller {
>>      clocks = <&clk_dif 0>;             /* PCIe controller clock */
>>
>>      pci at 0,0 {
>>          #address-cells = <3>;
>>          #size-cells = <2>;
>>          reg = <0x0 0x0 0x0 0x0 0x0>;
>>          compatible = "pciclass,0604";
>>          device_type = "pci";
>>          clocks = <&clk_dif 1>;         /* PCIe slot clock */
> 
> I assume this should be documented in
> dtschema/schemas/pci/pci-bus-common.yaml, too?
Patch posted:

https://lore.kernel.org/all/20250607194353.79124-1-marek.vasut+renesas@mailbox.org/

The rest is fixed in V3, thanks.