linux-kernel - Re: [PATCH v2 1/8] dt-bindings: PCI: Add binding for qps615

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Message-ID: <aa311052-deba-4d13-9ede-1d863a4f362e@kernel.org>
Date: Mon, 5 Aug 2024 16:43:47 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Krishna Chaitanya Chundru <quic_krichai@...cinc.com>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Krzysztof Wilczyński <kw@...ux.com>,
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Konrad Dybcio <konrad.dybcio@...aro.org>,
 cros-qcom-dts-watchers@...omium.org, Bartosz Golaszewski <brgl@...ev.pl>,
 Jingoo Han <jingoohan1@...il.com>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
Cc: andersson@...nel.org, quic_vbadigan@...cinc.com,
 linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH v2 1/8] dt-bindings: PCI: Add binding for qps615

On 05/08/2024 07:57, Krishna Chaitanya Chundru wrote:
>>
> Hi Krzysztof,
> 
> QPS615 has a 3 downstream ports and 1 upstream port as described below
> diagram.
> For this entire switch there are some supplies which we described in the
> dt-binding (vdd18-supply, vdd09-supply etc) and one GPIO which controls
> reset of the switch (reset-gpio). The switch hardware can configure the
> individual ports DSP0, DSP1, DSP2, upstream port and also one integrated
> ethernet endpoint which is connected to DSP2(I didn't mentioned in the
> diagram) through I2C.
> 
> The properties other than supplies,i2c client, reset gpio which
> are added will be applicable for all the ports.
> _______________________________________________________________
> |   |i2c|                   QPS615       |Supplies||Resx gpio |
> |   |___|              _________________ |________||__________|
> |      ________________| Upstream port |_____________         |
> |      |               |_______________|            |         |
> |      |                       |                    |         |
> |      |                       |                    |         |
> |  ____|_____              ____|_____            ___|____     |
> |  |DSP 0   |              | DSP 1  |            | DSP 2|     |
> |  |________|              |________|            |______|     |
> |_____________________________________________________________|
> 

I don't get why then properties should apply to main device node.

Best regards,
Krzysztof