diff mbox series

[08/12] devicetree: bindings: pci: add phy-tx0-term-offset to qcom,pcie

Message ID 20200320183455.21311-8-ansuelsmth@gmail.com
State New
Headers show
Series [01/12] pcie: qcom: add missing ipq806x clocks in pcie driver | expand

Commit Message

Ansuel Smith March 20, 2020, 6:34 p.m. UTC
Document phy-tx0-term-offset propriety to qcom pcie driver

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
 Documentation/devicetree/bindings/pci/qcom,pcie.txt | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Rob Herring March 31, 2020, 5:32 p.m. UTC | #1
On Fri, Mar 20, 2020 at 07:34:50PM +0100, Ansuel Smith wrote:
> Document phy-tx0-term-offset propriety to qcom pcie driver

propriety?

> 
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie.txt | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> index 6efcef040741..8c1d014f37b0 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> @@ -254,6 +254,12 @@
>  			- "perst-gpios"	PCIe endpoint reset signal line
>  			- "wake-gpios"	PCIe endpoint wake signal line
>  
> +- phy-tx0-term-offset:

Needs a vendor prefix.

> +	Usage: optional
> +	Value type: <u32>
> +	Definition: If not defined is 0. In ipq806x is set to 7. In newer
> +				revision (v2.0) the offset is zero.
> +
>  * Example for ipq/apq8064
>  	pcie@1b500000 {
>  		compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
> @@ -293,6 +299,7 @@
>  		reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
>  		pinctrl-0 = <&pcie_pins_default>;
>  		pinctrl-names = "default";
> +		phy-tx0-term-offset = <7>;
>  	};
>  
>  * Example for apq8084
> -- 
> 2.25.1
>
Ansuel Smith April 1, 2020, 12:09 p.m. UTC | #2
> -----Messaggio originale-----
> Da: Rob Herring <robh@kernel.org>
> Inviato: martedì 31 marzo 2020 19:33
> A: Ansuel Smith <ansuelsmth@gmail.com>
> Cc: Stanimir Varbanov <svarbanov@mm-sol.com>; Andy Gross
> <agross@kernel.org>; Bjorn Andersson <bjorn.andersson@linaro.org>;
> Bjorn Helgaas <bhelgaas@google.com>; Mark Rutland
> <mark.rutland@arm.com>; Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>;
> Andrew Murray <amurray@thegoodpenguin.co.uk>; Philipp Zabel
> <p.zabel@pengutronix.de>; linux-arm-msm@vger.kernel.org; linux-
> pci@vger.kernel.org; devicetree@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Oggetto: Re: [PATCH 08/12] devicetree: bindings: pci: add phy-tx0-term-
> offset to qcom,pcie
> 
> On Fri, Mar 20, 2020 at 07:34:50PM +0100, Ansuel Smith wrote:
> > Document phy-tx0-term-offset propriety to qcom pcie driver
> 
> propriety?
> 
> >
> > Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> > ---
> >  Documentation/devicetree/bindings/pci/qcom,pcie.txt | 7 +++++++
> >  1 file changed, 7 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> > index 6efcef040741..8c1d014f37b0 100644
> > --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> > +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> > @@ -254,6 +254,12 @@
> >  			- "perst-gpios"	PCIe endpoint reset signal line
> >  			- "wake-gpios"	PCIe endpoint wake signal line
> >
> > +- phy-tx0-term-offset:
> 
> Needs a vendor prefix.
> 

So I should change to qcom,phy-tx0-term-offset  right?

> > +	Usage: optional
> > +	Value type: <u32>
> > +	Definition: If not defined is 0. In ipq806x is set to 7. In newer
> > +				revision (v2.0) the offset is zero.
> > +
> >  * Example for ipq/apq8064
> >  	pcie@1b500000 {
> >  		compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064",
> "snps,dw-pcie";
> > @@ -293,6 +299,7 @@
> >  		reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
> >  		pinctrl-0 = <&pcie_pins_default>;
> >  		pinctrl-names = "default";
> > +		phy-tx0-term-offset = <7>;
> >  	};
> >
> >  * Example for apq8084
> > --
> > 2.25.1
> >
Bjorn Andersson April 1, 2020, 8:41 p.m. UTC | #3
On Fri 20 Mar 11:34 PDT 2020, Ansuel Smith wrote:

> Document phy-tx0-term-offset propriety to qcom pcie driver
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> ---
>  Documentation/devicetree/bindings/pci/qcom,pcie.txt | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> index 6efcef040741..8c1d014f37b0 100644
> --- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> +++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
> @@ -254,6 +254,12 @@
>  			- "perst-gpios"	PCIe endpoint reset signal line
>  			- "wake-gpios"	PCIe endpoint wake signal line
>  
> +- phy-tx0-term-offset:

If I understand your implementation correctly this difference in
hardware revision should be encoded in the compatible string.

Regards,
Bjorn

> +	Usage: optional
> +	Value type: <u32>
> +	Definition: If not defined is 0. In ipq806x is set to 7. In newer
> +				revision (v2.0) the offset is zero.
> +
>  * Example for ipq/apq8064
>  	pcie@1b500000 {
>  		compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
> @@ -293,6 +299,7 @@
>  		reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
>  		pinctrl-0 = <&pcie_pins_default>;
>  		pinctrl-names = "default";
> +		phy-tx0-term-offset = <7>;
>  	};
>  
>  * Example for apq8084
> -- 
> 2.25.1
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
index 6efcef040741..8c1d014f37b0 100644
--- a/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -254,6 +254,12 @@ 
 			- "perst-gpios"	PCIe endpoint reset signal line
 			- "wake-gpios"	PCIe endpoint wake signal line
 
+- phy-tx0-term-offset:
+	Usage: optional
+	Value type: <u32>
+	Definition: If not defined is 0. In ipq806x is set to 7. In newer
+				revision (v2.0) the offset is zero.
+
 * Example for ipq/apq8064
 	pcie@1b500000 {
 		compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
@@ -293,6 +299,7 @@ 
 		reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
 		pinctrl-0 = <&pcie_pins_default>;
 		pinctrl-names = "default";
+		phy-tx0-term-offset = <7>;
 	};
 
 * Example for apq8084