diff mbox series

[1/9] arm64: dts: qcom: sa8775p: add a node for the second serdes PHY

Message ID 20230807193507.6488-2-brgl@bgdev.pl (mailing list archive)
State Superseded
Headers show
Series arm64: dts: qcom: enable EMAC1 on sa8775p | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Bartosz Golaszewski Aug. 7, 2023, 7:34 p.m. UTC
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Add a node for the SerDes PHY used by EMAC1 on sa8775p-ride.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Andrew Halaney Aug. 7, 2023, 9:10 p.m. UTC | #1
On Mon, Aug 07, 2023 at 09:34:59PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> Add a node for the SerDes PHY used by EMAC1 on sa8775p-ride.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

FWIW this seems to match downstream sources.

Reviewed-by: Andrew Halaney <ahalaney@redhat.com>

> ---
>  arch/arm64/boot/dts/qcom/sa8775p.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> index 7b55cb701472..38d10af37ab0 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> @@ -1846,6 +1846,15 @@ serdes0: phy@8901000 {
>  			status = "disabled";
>  		};
>  
> +		serdes1: phy@8902000 {
> +			compatible = "qcom,sa8775p-dwmac-sgmii-phy";
> +			reg = <0x0 0x08902000 0x0 0xe10>;
> +			clocks = <&gcc GCC_SGMI_CLKREF_EN>;
> +			clock-names = "sgmi_ref";
> +			#phy-cells = <0>;
> +			status = "disabled";
> +		};
> +
>  		pdc: interrupt-controller@b220000 {
>  			compatible = "qcom,sa8775p-pdc", "qcom,pdc";
>  			reg = <0x0 0x0b220000 0x0 0x30000>,
> -- 
> 2.39.2
>
Andrew Lunn Aug. 7, 2023, 9:28 p.m. UTC | #2
On Mon, Aug 07, 2023 at 04:10:34PM -0500, Andrew Halaney wrote:
> On Mon, Aug 07, 2023 at 09:34:59PM +0200, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > 
> > Add a node for the SerDes PHY used by EMAC1 on sa8775p-ride.
> > 
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> FWIW this seems to match downstream sources.
> 
> Reviewed-by: Andrew Halaney <ahalaney@redhat.com>

Why does matching downstream make it correct and deserve a
Reviewed-by?

Did you actually review the change?

    Andrew
Andrew Halaney Aug. 7, 2023, 9:39 p.m. UTC | #3
On Mon, Aug 07, 2023 at 11:28:15PM +0200, Andrew Lunn wrote:
> On Mon, Aug 07, 2023 at 04:10:34PM -0500, Andrew Halaney wrote:
> > On Mon, Aug 07, 2023 at 09:34:59PM +0200, Bartosz Golaszewski wrote:
> > > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > > 
> > > Add a node for the SerDes PHY used by EMAC1 on sa8775p-ride.
> > > 
> > > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > 
> > FWIW this seems to match downstream sources.
> > 
> > Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
> 
> Why does matching downstream make it correct and deserve a
> Reviewed-by?
> 
> Did you actually review the change?
> 
>     Andrew
> 

That wording of "match downstream sources" is amiguous, sorry.

What I meant was that:

    1. This looks like a properly formatted dtsi node, follows
       conventions in the file for ordering, etc
    2. The downstream devicetree from Qualcomm uses the same MMIO region
       same dependencies for clocks, etc. I do not have documentation
       to further review past that

I didn't suspect anyone else would cross check this information, so I
did and thought it deserves a RB after that. Please let me know if you'd
rather I just leave a comment saying such without any formal tags (but I
thought since the whole patch looks proper and that information looks
correct compared to the "documentation" I have access to it deserved
such).

In the rest of this series review I may have used similar phrasing with
respect to downstream, but that expanded description is what I meant in
those cases as well.

Thanks,
Andrew
Andrew Lunn Aug. 7, 2023, 9:48 p.m. UTC | #4
> That wording of "match downstream sources" is amiguous, sorry.
> 
> What I meant was that:
> 
>     1. This looks like a properly formatted dtsi node, follows
>        conventions in the file for ordering, etc
>     2. The downstream devicetree from Qualcomm uses the same MMIO region
>        same dependencies for clocks, etc. I do not have documentation
>        to further review past that

O.K. This does make your reviews worthwhile.

Vendor crap gets that name for a reason. So just saying it is the same
as the vendor code is not really helpful. So i would avoid this
ambiguous statement. And your later comment on a patch which points
out real problems adds to my confidence you did a real review.

Thanks
	  Andrew
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 7b55cb701472..38d10af37ab0 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -1846,6 +1846,15 @@  serdes0: phy@8901000 {
 			status = "disabled";
 		};
 
+		serdes1: phy@8902000 {
+			compatible = "qcom,sa8775p-dwmac-sgmii-phy";
+			reg = <0x0 0x08902000 0x0 0xe10>;
+			clocks = <&gcc GCC_SGMI_CLKREF_EN>;
+			clock-names = "sgmi_ref";
+			#phy-cells = <0>;
+			status = "disabled";
+		};
+
 		pdc: interrupt-controller@b220000 {
 			compatible = "qcom,sa8775p-pdc", "qcom,pdc";
 			reg = <0x0 0x0b220000 0x0 0x30000>,