Thread (24 messages) 24 messages, 5 authors, 2023-12-11

Re: [PATCH v3 1/3] dt-bindings: phy: qcom,qmp: Add PCIe qcom,refclk-always-on property

From: Konrad Dybcio <hidden>
Date: 2023-12-07 10:53:45
Also in: linux-arm-msm, linux-devicetree, lkml


On 12/6/23 14:07, Manivannan Sadhasivam wrote:
On Fri, Dec 01, 2023 at 10:29:11PM +0100, Konrad Dybcio wrote:
quoted
On 1.12.2023 14:25, Krzysztof Kozlowski wrote:
quoted
On 01/12/2023 13:30, Manivannan Sadhasivam wrote:
quoted
quoted
What I said before:
"Again, third time (once from Bjorn, once from Dmitry), rephrase
property name and description to describe the hardware issue. I see
description improved, but not the property name. Again in the end of
description you say what Linux should do. Bindings do not describe Linux
OS."
You didn't answer my question:

"I see a plenty of properties similar to this one instructing the OS to keep some
resource ON to workaround hardware issues. So they are all wrong?"
They are not the best, but it all depends on the individual case.
quoted
If you say they are wrong, why are they approved in the first place?
Because we don't have time to keep digging what the driver is doing and
what is claimed in DT. Some people don't even CC us on the driver.
Not sure if I asked this before, but can this not be set in the config
struct inside the driver?
This cannot be the default config for any platform as keeping refclk always on
will have some power penalty. Only if the hardware (EP or board design) has any
issue, we can turn on this option.
So, if I'm reading this right, this concerns some but not all
8280 boards?

Konrad

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