[PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Krishna chaitanya chundru]

Add the "pcie-mem" interconnect path to the bindings.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
---
 Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
index b3c22eb..6fc5440 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
@@ -70,6 +70,13 @@ properties:
     description: GPIO used as WAKE# output signal
     maxItems: 1
 
+  interconnects:
+    maxItems: 1
+
+  interconnect-names:
+    items:
+      - const: pcie-mem
+
   resets:
     maxItems: 1
 
@@ -97,6 +104,8 @@ required:
   - interrupts
   - interrupt-names
   - reset-gpios
+  - interconnects
+  - interconnect-names
   - resets
   - reset-names
   - power-domains
-- 
2.7.4

Re: [PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Rob Herring]

On Wed, 07 Jun 2023 21:48:05 +0530, Krishna chaitanya chundru wrote:
> Add the "pcie-mem" interconnect path to the bindings.
> 
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.example.dtb: pcie-ep@1c00000: 'interconnects' is a required property
	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.example.dtb: pcie-ep@1c00000: 'interconnect-names' is a required property
	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/1686154687-29356-2-git-send-email-quic_krichai@quicinc.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

Re: [PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Krishna Chaitanya Chundru]

On 6/7/2023 10:51 PM, Rob Herring wrote:
> On Wed, 07 Jun 2023 21:48:05 +0530, Krishna chaitanya chundru wrote:
>> Add the "pcie-mem" interconnect path to the bindings.
>>
>> Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
>> ---
>>   Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 9 +++++++++
>>   1 file changed, 9 insertions(+)
>>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.example.dtb: pcie-ep@1c00000: 'interconnects' is a required property
> 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.example.dtb: pcie-ep@1c00000: 'interconnect-names' is a required property
> 	From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
>
> doc reference errors (make refcheckdocs):
>
> See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/1686154687-29356-2-git-send-email-quic_krichai@quicinc.com
>
> The base for the series is generally the latest rc1. A different dependency
> should be noted in *this* patch.
>
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
>
> pip3 install dtschema --upgrade
>
> Please check and re-submit after running the above command yourself. Note
> that DT_SCHEMA_FILES can be set to your schema file to speed up checking
> your schema. However, it must be unset to test all examples with your schema.
>
Fixed the errors.

- Krishna chaitanya

Re: [PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Krzysztof Kozlowski]

On 09/06/2023 13:55, Krishna Chaitanya Chundru wrote:
>>
>> Please check and re-submit after running the above command yourself. Note
>> that DT_SCHEMA_FILES can be set to your schema file to speed up checking
>> your schema. However, it must be unset to test all examples with your schema.
>>
> Fixed the errors.

Then please test it before sending.

Best regards,
Krzysztof

Re: [PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Rob Herring]

On Wed, Jun 07, 2023 at 09:48:05PM +0530, Krishna chaitanya chundru wrote:
> Add the "pcie-mem" interconnect path to the bindings.
> 
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> index b3c22eb..6fc5440 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> @@ -70,6 +70,13 @@ properties:
>      description: GPIO used as WAKE# output signal
>      maxItems: 1
>  
> +  interconnects:
> +    maxItems: 1
> +
> +  interconnect-names:
> +    items:
> +      - const: pcie-mem
> +
>    resets:
>      maxItems: 1
>  
> @@ -97,6 +104,8 @@ required:
>    - interrupts
>    - interrupt-names
>    - reset-gpios
> +  - interconnects
> +  - interconnect-names

You can't add required properties. That's an ABI break. Up to the 
platform whether that's acceptible, but you have to explain all this in 
the commmit msg.

>    - resets
>    - reset-names
>    - power-domains
> -- 
> 2.7.4
> 

Re: [PATCH v2 1/3] dt-bindings: PCI: qcom: ep: Add interconnects path

[Manivannan Sadhasivam]

On Thu, Jun 08, 2023 at 09:27:59AM -0600, Rob Herring wrote:
> On Wed, Jun 07, 2023 at 09:48:05PM +0530, Krishna chaitanya chundru wrote:
> > Add the "pcie-mem" interconnect path to the bindings.
> > 
> > Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
> > ---
> >  Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > index b3c22eb..6fc5440 100644
> > --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml
> > @@ -70,6 +70,13 @@ properties:
> >      description: GPIO used as WAKE# output signal
> >      maxItems: 1
> >  
> > +  interconnects:
> > +    maxItems: 1
> > +
> > +  interconnect-names:
> > +    items:
> > +      - const: pcie-mem
> > +
> >    resets:
> >      maxItems: 1
> >  
> > @@ -97,6 +104,8 @@ required:
> >    - interrupts
> >    - interrupt-names
> >    - reset-gpios
> > +  - interconnects
> > +  - interconnect-names
> 
> You can't add required properties. That's an ABI break. Up to the 
> platform whether that's acceptible, but you have to explain all this in 
> the commmit msg.
> 

Some platforms may not boot if a device driver doesn't initialize the
interconnect path. Mostly it is all handled by the bootloader but we have
starting to see cases where bootloader simply ignores them.

So I'd say that these need to be made required (should've been from the start
but I take the blame). And yes, this info should be part of the commit message.

- Mani

> >    - resets
> >    - reset-names
> >    - power-domains
> > -- 
> > 2.7.4
> > 

-- 
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[PATCH v2 2/3] arm: dts: qcom: sdx55: Add interconnect path

[Krishna chaitanya chundru]

Add pcie-mem interconnect path to sdx55 target.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
---
 arch/arm/boot/dts/qcom-sdx55.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
index 342c3d1..e9f8bfe 100644
--- a/arch/arm/boot/dts/qcom-sdx55.dtsi
+++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
@@ -421,6 +421,10 @@
 				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
 			interrupt-names = "global",
 					  "doorbell";
+
+			interconnects = <&system_noc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>;
+			interconnect-names = "pci-mem";
+
 			resets = <&gcc GCC_PCIE_BCR>;
 			reset-names = "core";
 			power-domains = <&gcc PCIE_GDSC>;
-- 
2.7.4

Re: [PATCH v2 2/3] arm: dts: qcom: sdx55: Add interconnect path

[Manivannan Sadhasivam]

On Wed, Jun 07, 2023 at 09:48:06PM +0530, Krishna chaitanya chundru wrote:
> Add pcie-mem interconnect path to sdx55 target.
> 
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>

Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>

- Mani

> ---
>  arch/arm/boot/dts/qcom-sdx55.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom-sdx55.dtsi
> index 342c3d1..e9f8bfe 100644
> --- a/arch/arm/boot/dts/qcom-sdx55.dtsi
> +++ b/arch/arm/boot/dts/qcom-sdx55.dtsi
> @@ -421,6 +421,10 @@
>  				     <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
>  			interrupt-names = "global",
>  					  "doorbell";
> +
> +			interconnects = <&system_noc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>;
> +			interconnect-names = "pci-mem";
> +
>  			resets = <&gcc GCC_PCIE_BCR>;
>  			reset-names = "core";
>  			power-domains = <&gcc PCIE_GDSC>;
> -- 
> 2.7.4
> 

-- 
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