Re: [PATCH v1 2/2] arm64: dts: qcom: sa8775p: Add ep pcie1 controller node

[Konrad Dybcio]

On 11/7/23 19:37, Andrew Halaney wrote:
> On Tue, Nov 07, 2023 at 06:34:53PM +0530, Mrinmay Sarkar wrote:
> > Add ep pcie dtsi node for pcie1 controller found on sa8775p platform.
> > It supports gen4 and x4 link width. Limiting the speed to Gen3 due to
> > stability issues.
>
> I wouldn't mind a bit more information on what "stability" issues
> entails! I'm a sucker for details in a commit message.
Yep, giving us a bit more than "doesnt work" may help us help you!


> > +
> > +		interrupts = <GIC_SPI 518 IRQ_TYPE_LEVEL_HIGH>,
> > +					 <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>,
> > +					 <GIC_SPI 474 IRQ_TYPE_LEVEL_HIGH>;
Looks like the indentation is off?

> > +
> > +		interrupt-names = "global", "doorbell", "dma";
> > +
> > +		interconnects = <&pcie_anoc MASTER_PCIE_1 0 &mc_virt SLAVE_EBI1 0>,
> > +				<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_1 0>;
>
> I keep seeing Konrad requesting that we use the #define instead of a raw
> number 0, i.e. something like QCOM_ICC_TAG_ALWAYS (although if I'm
> reading that correctly QCOM_ICC_TAG_ALWAYS doesn't evaluate to 0, so
> make sure you pick the appropriate one).
No it doesn't, but if you look at the code, tag being non-existent
assigns QCOM_ICC_TAG_ALWAYS which is a workaround for DTBs from back
when interconnect tags were not a thing

> > +		interconnect-names = "pcie-mem", "cpu-pcie";
>
> This is nitpicky, but unless someone told you to do the whitespace
> between some of these properties I'd get more consistent. i.e. reg and
> reg-names has no newline between them, but clocks and clock-names does,
> and then interconnects/interconnect-names does not.
:)

Konrad