Messages in this thread | | | Date | Wed, 24 Feb 2021 15:10:13 +0100 | From | Krzysztof Wilczyński <> | Subject | Re: [v8,6/7] PCI: mediatek-gen3: Add system PM support |
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Hi Jianjun,
> Add suspend_noirq and resume_noirq callback functions to implement > PM system suspend hooks for MediaTek Gen3 PCIe controller.
So, "systems suspend" and "resume" hooks, correct?
> When system suspend, trigger the PCIe link to L2 state and pull down
It probably would be "the system suspends".
[...] > When system resum, the PCIe link should be re-established and the > related control register values should be restored.
Similarly to the above: "the system resumes".
[...] > + if (err) { > + dev_err(port->dev, "can not enter L2 state\n"); > + return err; > + }
Most likely you want "cannot" or "can't" in the above error message.
> + /* Pull down the PERST# pin */ > + val = readl_relaxed(port->base + PCIE_RST_CTRL_REG); > + val |= PCIE_PE_RSTB; > + writel_relaxed(val, port->base + PCIE_RST_CTRL_REG); > + > + dev_dbg(port->dev, "enter L2 state success");
Just a nitpick. What about "entered L2 states successfully"?
[...] > + if (err) { > + dev_err(port->dev, "resume failed\n"); > + return err; > + }
This error message does not quite convey that the mtk_pcie_startup_port() was the function that failed, which is only a part of what you have to do to successfully resume.
> + dev_dbg(port->dev, "resume done\n");
A nitpick. Probably not needed, as lack of error message would mean that the device resumed successfully after being suspended.
Krzysztof
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