RE: [PATCH v7 0/8] Add the imx8m pcie phy driver and imx8mm pcie support

[Hongxing Zhu <hongxing.zhu@nxp.com>]

> -----Original Message-----
> From: Marcel Ziswiler <marcel.ziswiler@toradex.com>
> Sent: Thursday, January 13, 2022 4:07 PM
> To: kishon@ti.com; vkoul@kernel.org; lorenzo.pieralisi@arm.com;
> l.stach@pengutronix.de; tharvey@gateworks.com; robh@kernel.org;
> galak@kernel.crashing.org; Hongxing Zhu <hongxing.zhu@nxp.com>;
> bhelgaas@google.com; shawnguo@kernel.org
> Cc: linux-phy@lists.infradead.org; linux-pci@vger.kernel.org;
> kernel@pengutronix.de; devicetree@vger.kernel.org;
> linux-kernel@vger.kernel.org; dl-linux-imx <linux-imx@nxp.com>;
> linux-arm-kernel@lists.infradead.org
> Subject: Re: [PATCH v7 0/8] Add the imx8m pcie phy driver and imx8mm
> pcie support
> 
> Hi Richard
> 
> On Thu, 2021-12-02 at 16:02 +0800, Richard Zhu wrote:
> > Refer to the discussion [1] when try to enable i.MX8MM PCIe support,
> > one standalone PCIe PHY driver should be seperated from i.MX PCIe
> > driver when enable i.MX8MM PCIe support.
> >
> > This patch-set adds the standalone PCIe PHY driver suport[1-5], and
> > i.MX8MM PCIe support[6-8] to have whole view to review this
> patch-set.
> >
> > The PCIe works on i.MX8MM EVK board based the the blkctrl power
> driver
> > [2] and this patch-set. And tested by Tim and Marcel on the different
> > reference clock modes boards.
> >
> > [1]
> >
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpa
> tc
> >
> hwork.ozlabs.org%2Fproject%2Flinux-pci%2Fpatch%2F20210510141509.
> 929120
> >
> -3-l.stach%40pengutronix.de%2F&amp;data=04%7C01%7Chongxing.zhu
> %40nxp.c
> >
> om%7C487b28aecfd14bdfe1b808d9d66bb4ce%7C686ea1d3bc2b4c6fa92
> cd99c5c3016
> >
> 35%7C0%7C0%7C637776580350900040%7CUnknown%7CTWFpbGZsb3d
> 8eyJWIjoiMC4wLj
> >
> AwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&
> amp;sdata=
> >
> 8pMSNCoRVpWBld2dSGUUw2Dpq%2FlRAqsVWLqAJ0njEgo%3D&amp;re
> served=0
> > [2]
> >
> https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpa
> tc
> >
> hwork.kernel.org%2Fproject%2Flinux-arm-kernel%2Fcover%2F20210910
> 202640
> > .980366-1-l.stach%40pengutronix.de%2F&amp;data=04%7C01%7Chon
> gxing.zhu%
> >
> 40nxp.com%7C487b28aecfd14bdfe1b808d9d66bb4ce%7C686ea1d3bc2b
> 4c6fa92cd99
> >
> c5c301635%7C0%7C0%7C637776580350900040%7CUnknown%7CTWFp
> bGZsb3d8eyJWIjo
> >
> iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%
> 7C3000&amp
> > ;sdata=MHPLXbIyL2pnZK%2FdVkDcJBJBjlqtPIOzzwLsNEKlCqs%3D&amp
> ;reserved=0
> >
> > Main changes v6 --> v7:
> > - Add "Reviewed-by: Rob Herring <robh@kernel.org>" into #2 patches.
> > - Regarding Vinod's review comments do the following changes.
> >   - Don't build in the PHY driver in default.
> >   - Remove the extra blank line
> >   - Correct the license tag.
> >
> > Main changes v5 --> v6:
> > - Add "Reviewed-by: Rob Herring <robh@kernel.org>" into #1 and #3
> patches.
> > - Merge Rob's review comments to the #2 patch.
> >
> > Main changes v4 --> v5:
> > - Set the AUX_EN always 1b'1, thus it can fix the regression
> > introduced in v4
> >   series on Marcel's board.
> > - Use the lower-case letter in the devicetreee refer to Marcel's
> comments.
> > - Since the default value of the deemphasis parameters are zero, only
> > set
> >   the deemphasis registers when the input paramters are none zero.
> >
> > Main changes v3 --> v4:
> > - Update the yaml to fix syntax error, add maxitems and drop
> > description of phy
> > - Correct the clock name in PHY DT node.
> > - Squash the EVK board relalted dts changes into one patch, and drop
> > the
> >   useless dummy clock and gpio suffix in DT nodes.
> > - Add board specific de-emphasis parameters as DT properties. Thus
> > each board
> >   can specify its actual de-emphasis values.
> > - Update the commit log of PHY driver.
> > - Remove the useless codes from PCIe driver, since they are moved to
> > PHY driver
> > - After the discussion and verification of the CLKREQ# configurations
> > with Tim,
> >   agree to add an optional boolean property "fsl,clkreq-unsupported",
> > indicates
> >   the CLKREQ# signal is hooked or not in HW designs.
> > - Add "Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>" tag,
> > since
> >   Marcel help to test the v3 patch-set.
> >
> > Main changes v2 --> v3:
> > - Regarding Lucas' comments.
> >  - to have a whole view to review the patches, send out the i.MX8MM
> PCIe support too.
> >  - move the PHY related bits manipulations of the GPR/SRC to
> standalone PHY driver.
> >  - split the dts changes to SOC and board DT, and use the enum
> instead of raw value.
> >  - update the license of the dt-binding header file.
> >
> > Changes v1 --> v2:
> > - Update the license of the dt-binding header file to make the license
> >   compatible with dts files.
> > - Fix the dt_binding_check errors.
> >
> >
> Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml    |   6
> +++
> > Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml |  92
> > +++++++++++++++++++++++++++++++
> >
> arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
>  |  55
> > +++++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm.dtsi
> 
> > |  46 +++++++++++++++-
> drivers/pci/controller/dwc/pci-imx6.c
> > |  83 +++++++++++++++++++++++++---
> drivers/phy/freescale/Kconfig
> 
> > |   8 +++
> drivers/phy/freescale/Makefile
> 
> > |   1 +
> drivers/phy/freescale/phy-fsl-imx8m-pcie.c                   |
> > 236
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> +++++++++++++++++++++
> >
> include/dt-bindings/phy/phy-imx8-pcie.h
>  |  14
> > +++++
> > 9 files changed, 532 insertions(+), 9 deletions(-)
> >
> > [PATCH v7 1/8] dt-bindings: phy: phy-imx8-pcie: Add binding for the
> > [PATCH v7 2/8] dt-bindings: phy: Add imx8 pcie phy driver support
> > [PATCH v7 3/8] dt-bindings: imx6q-pcie: Add PHY phandles and name
> > [PATCH v7 4/8] arm64: dts: imx8mm: Add the pcie phy support [PATCH
> v7
> > 5/8] phy: freescale: pcie: Initialize the imx8 pcie [PATCH v7 6/8]
> > arm64: dts: imx8mm: Add the pcie support [PATCH v7 7/8] arm64: dts:
> > imx8mm-evk: Add the pcie support on imx8mm [PATCH v7 8/8] PCI:
> imx:
> > Add the imx8mm pcie support
> 
> What is the status of patches 4, 6 and 7? While the rest has been pulled
> those are still missing in today's - next.
[Richard Zhu] Thanks for your care.
I used to ping Shawn twice on Dec17/27 2021, but couldn't receive his response.
Anyway, I would continue to ping him later.

Best Regards
Richard Zhu

> 
> Cheers
> 
> Marcel