RE: [PATCH 0/6] Add IMX8M Mini PCI support

From: Richard Zhu <hongxing.zhu@nxp.com>
To: "Ahmad Fatoum" <a.fatoum@pengutronix.de>,
	"tharvey@gateworks.com" <tharvey@gateworks.com>,
	"Lucas Stach" <l.stach@pengutronix.de>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Rob Herring" <robh+dt@kernel.org>,
	"Shawn Guo" <shawnguo@kernel.org>,
	"Sascha Hauer" <s.hauer@pengutronix.de>,
	"Pengutronix Kernel Team" <kernel@pengutronix.de>,
	"Fabio Estevam" <festevam@gmail.com>,
	dl-linux-imx <linux-imx@nxp.com>,
	"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org"
	<linux-arm-kernel@lists.infradead.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>
Subject: RE: [PATCH 0/6] Add IMX8M Mini PCI support
Date: Fri, 30 Jul 2021 01:27:57 +0000	[thread overview]
Message-ID: <VI1PR04MB58533AF76EA4DFD8AD6CDA158CEC9@VI1PR04MB5853.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <36070609-9f1f-00c8-ccf5-8ed7877b29da@pengutronix.de>

Hi Tim:
Just as Ahmad mentioned, Lucas had issue one patch-set to support i.MX8MM PCIe.
Some comments in the review cycle.
- One separate PHY driver should be used for i.MX8MM PCIe driver.
- Schema file should be used I think, otherwise the .txt file in the dt-binding.

I'm preparing one patch-set, but it's relied on the yaml file exchanges and power-domain changes(block control and so on).
Up to now, I only walking on the first step, trying to exchange the dt-binding files to schema yaml file.

Best Regards
Richard Zhu

> -----Original Message-----
> From: Ahmad Fatoum <a.fatoum@pengutronix.de>
> Sent: Thursday, July 29, 2021 10:40 PM
> To: tharvey@gateworks.com; Richard Zhu <hongxing.zhu@nxp.com>; Lucas
> Stach <l.stach@pengutronix.de>; Bjorn Helgaas <bhelgaas@google.com>;
> Rob Herring <robh+dt@kernel.org>; Shawn Guo <shawnguo@kernel.org>;
> Sascha Hauer <s.hauer@pengutronix.de>; Pengutronix Kernel Team
> <kernel@pengutronix.de>; Fabio Estevam <festevam@gmail.com>;
> dl-linux-imx <linux-imx@nxp.com>; linux-pci@vger.kernel.org;
> linux-arm-kernel@lists.infradead.org; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; Krzysztof Wilczyński <kw@linux.com>; Lorenzo
> Pieralisi <lorenzo.pieralisi@arm.com>
> Subject: Re: [PATCH 0/6] Add IMX8M Mini PCI support
> 
> Hello Tim,
> 
> On 23.07.21 22:49, Tim Harvey wrote:
> > The IMX8M Mini PCI controller shares much in common with the existing
> > SoC's supported by the pci-imx6 driver.
> >
> > This series adds support for it. Driver changes came from the NXP
> > downstream vendor kernel [1]
> >
> > This series depends on Lucas Stach's i.MX8MM GPC improvements and
> > BLK_CTRL driver and is based on top of his v2 submission [2]
> 
> Are you aware of Lucas' patch series and Rob's remarks there?
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.ke
> rnel.org%2Flinux-pci%2F20210510141509.929120-7-l.stach%40pengutronix.
> de%2F&amp;data=04%7C01%7Chongxing.zhu%40nxp.com%7C21a3e2ba936
> c443581ea08d9529ebf65%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7
> C0%7C637631664036013517%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4
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> mp;sdata=blnp2JkmGAZ2w5JHZHJQoZJSuY1646KAT8cccaI5n%2Fw%3D&amp;
> reserved=0
> 
> Cheers,
> Ahmad
> 
> >
> > The final patch adds PCIe support to the Tim [1]
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsour
> >
> ce.codeaurora.org%2Fexternal%2Fimx%2Flinux-imx%2F&amp;data=04%7C0
> 1%7Ch
> >
> ongxing.zhu%40nxp.com%7C21a3e2ba936c443581ea08d9529ebf65%7C686e
> a1d3bc2
> >
> b4c6fa92cd99c5c301635%7C0%7C0%7C637631664036013517%7CUnknown
> %7CTWFpbGZ
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> sb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6M
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> g%3D&am
> > p;reserved=0
> > [2]
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpatc
> >
> hwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Flist%2F%3Fseries%3D51
> 9
> >
> 251&amp;data=04%7C01%7Chongxing.zhu%40nxp.com%7C21a3e2ba936c44
> 3581ea08
> >
> d9529ebf65%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63763
> 166403601
> >
> 3517%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2lu
> MzIiLCJBT
> >
> iI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=M6%2FzPsxRPv%2Fv7a
> ad7uqjDQY
> > 8LhHOX%2B%2FLzxnuW1UrVgE%3D&amp;reserved=0
> >
> > Tim Harvey (6):
> >   dt-bindings: imx6q-pcie: add compatible for IMX8MM support
> >   dt-bindings: reset: imx8mq: add pcie reset
> >   PCI: imx6: add IMX8MM support
> >   reset: imx7: add resets for PCIe
> >   arm64: dts: imx8mm: add PCIe support
> >   arm64: dts: imx8mm: add gpc iomux compatible
> >
> >  .../bindings/pci/fsl,imx6q-pcie.txt           |   4 +-
> >  arch/arm64/boot/dts/freescale/imx8mm.dtsi     |  38 ++++++-
> >  drivers/pci/controller/dwc/pci-imx6.c         | 103
> +++++++++++++++++-
> >  drivers/reset/reset-imx7.c                    |   3 +
> >  include/dt-bindings/reset/imx8mq-reset.h      |   3 +-
> >  5 files changed, 147 insertions(+), 4 deletions(-)
> >
> 
> 
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