From: Frank Li <Frank.li@nxp.com>
To: "helgaas@kernel.org" <helgaas@kernel.org>
Cc: "imx@lists.linux.dev" <imx@lists.linux.dev>,
"bhelgaas@google.com" <bhelgaas@google.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"gustavo.pimentel@synopsys.com" <gustavo.pimentel@synopsys.com>,
"kw@linux.com" <kw@linux.com>, Leo Li <leoyang.li@nxp.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
dl-linux-imx <linux-imx@nxp.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"lorenzo.pieralisi@arm.com" <lorenzo.pieralisi@arm.com>,
"M.H. Lian" <minghuan.lian@nxp.com>,
Mingkai Hu <mingkai.hu@nxp.com>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
Roy Zang <roy.zang@nxp.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"Z.Q. Hou" <zhiqiang.hou@nxp.com>
Subject: Re: [PATCH v3 1/2] PCI: dwc: Implement general suspend/resume functionality for L2/L3 transitions
Date: Mon, 12 Jun 2023 12:16:24 -0400 [thread overview]
Message-ID: <ZIdE2KjOuyHmLqz0@lizhi-Precision-Tower-5810> (raw)
In-Reply-To: <AM6PR04MB48383AB3FD2062334ECB66EB88759@AM6PR04MB4838.eurprd04.prod.outlook.com>
On Fri, May 12, 2023 at 02:47:46PM +0000, Frank Li wrote:
> >
> > Introduced helper function dw_pcie_get_ltssm to retrieve
> > SMLH_LTSS_STATE.
> > Added API pme_turn_off and exit_from_l2 for managing L2/L3 state
> > transitions.
> >
> > Typical L2 entry workflow:
> >
> > 1. Transmit PME turn off signal to PCI devices.
> > 2. Await link entering L2_IDLE state.
> > 3. Transition Root complex to D3 state.
> >
> > Typical L2 exit workflow:
> >
> > 1. Transition Root complex to D0 state.
> > 2. Issue exit from L2 command.
> > 3. Reinitialize PCI host.
> > 4. Wait for link to become active.
> >
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
>
> Ping
Ping
>
> > Change from v2 to v3:
> > - Basic rewrite whole patch according rob herry suggestion.
> > put common function into dwc, so more soc can share the same logic.
> >
>
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next prev parent reply other threads:[~2023-06-12 16:32 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-19 16:41 [PATCH v3 1/2] PCI: dwc: Implement general suspend/resume functionality for L2/L3 transitions Frank Li
2023-04-19 16:41 ` [PATCH v3 2/2] PCI: layerscape: Add power management support for ls1028a Frank Li
[not found] ` <AM6PR04MB48383AB3FD2062334ECB66EB88759@AM6PR04MB4838.eurprd04.prod.outlook.com>
2023-06-12 16:16 ` Frank Li [this message]
2023-07-17 14:05 ` [PATCH v3 1/2] PCI: dwc: Implement general suspend/resume functionality for L2/L3 transitions Frank Li
2023-07-17 16:45 ` Manivannan Sadhasivam
2023-07-17 18:36 ` Frank Li
2023-07-18 10:04 ` Manivannan Sadhasivam
2023-07-19 19:16 ` Frank Li
2023-07-20 14:20 ` Manivannan Sadhasivam
2023-07-20 14:25 ` Manivannan Sadhasivam
2023-07-20 14:37 ` Frank Li
2023-07-20 16:07 ` Manivannan Sadhasivam
2023-07-20 16:20 ` Bjorn Helgaas
2023-07-20 16:27 ` Manivannan Sadhasivam
2023-07-20 18:35 ` Bjorn Helgaas
2023-07-20 16:26 ` Frank Li
2023-07-20 16:43 ` Manivannan Sadhasivam
2023-07-20 16:59 ` Frank Li
2023-07-21 2:09 ` Shawn Lin
2023-07-21 14:10 ` Frank Li
2023-07-21 16:07 ` Manivannan Sadhasivam
2023-07-21 16:21 ` Frank Li
2023-07-21 14:54 ` Manivannan Sadhasivam
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