Re: [PATCH v6 3/3] arm64: dts: qcom: eliza-evk: Add PCIe1 with TC9563 PCIe switch

[Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>]

On 7/30/26 9:52 AM, Manivannan Sadhasivam wrote:
> On Thu, Jul 30, 2026 at 09:42:29AM +0200, Konrad Dybcio wrote:
>> On 7/30/26 7:25 AM, Manivannan Sadhasivam wrote:
>>> On Thu, Jul 30, 2026 at 10:18:55AM +0530, Krishna Chaitanya Chundru wrote:
>>>> The Eliza EVK board connects PCIe1 (8GT/s x2) to a Toshiba TC9563
>>>> PCIe switch. Enable PCIe1 and its QMP PHY nodes.
>>>>
>>>> TC9563 uses I2C (at address 0x77 on I2C4) for its management interface.
>>
>> [...]
>>
>>>> +		pcie@3,0 {
>>>> +			reg = <0x21800 0x0 0x0 0x0 0x0>;
>>>> +			#address-cells = <3>;
>>>> +			#size-cells = <2>;
>>>> +			device_type = "pci";
>>>> +			ranges;
>>>> +			bus-range = <0x5 0xff>;
>>>> +
>>>> +			pcie@0,0 {
>>>> +				reg = <0x50000 0x0 0x0 0x0 0x0>;
>>>> +				#address-cells = <3>;
>>>> +				#size-cells = <2>;
>>>> +				device_type = "pci";
>>>> +				ranges;
>>>
>>> Sashiko pointed out that you are using bridge specific properties in EP node:
>>> https://lore.kernel.org/linux-pci/20260730051031.20D8E1F000E9@smtp.kernel.org
>>
>> Can we harden the bindings here?
>>
> 
> Possible, but overkill IMO. The base dtschema for PCI bridge includes both
> 'pci-device' and 'pci-bus-common'. So for the Endpoints, we need to restrict
> them to use only 'pci-device' schema and that would require adding
> 'patternProperties' to cover the Endpoint nodes in each binding.
> 
> Since this is not a recurring issue, I don't think we really need to go that
> far.

OK

Konrad