[PATCH v5 0/8] Add the imx8m pcie phy driver and imx8mm pcie support

Hongxing Zhu hongxing.zhu at nxp.com
Tue Nov 16 19:38:46 PST 2021 

<snipped...>
> > Subject: Re: [PATCH v5 0/8] Add the imx8m pcie phy driver and imx8mm
> > pcie support
> >
> > On Mon, Nov 1, 2021 at 7:58 PM Richard Zhu <hongxing.zhu at nxp.com>
> > 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&data=04%7C01%7Chongxing.zhu
> > %40nxp.c
> > >
> >
> om%7C489971db9c0f4308600208d9a88b2b05%7C686ea1d3bc2b4c6fa9
> > 2cd99c5c3016
> > >
> >
> 35%7C0%7C0%7C637726137953234928%7CUnknown%7CTWFpbGZsb3d
> > 8eyJWIjoiMC4wLj
> > >
> >
> AwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&
> > amp;sdata=
> > >
> >
> ltuNZqIAsEH6%2B1KE4cqNOiUul3Ex%2BWmYcyqD%2BFJuUrs%3D&
> > reserved=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&data=04%7C01%7Ch
> on
> > gxing.zhu%
> > >
> >
> 40nxp.com%7C489971db9c0f4308600208d9a88b2b05%7C686ea1d3bc2
> > b4c6fa92cd99
> > >
> >
> c5c301635%7C0%7C0%7C637726137953234928%7CUnknown%7CTWFp
> > bGZsb3d8eyJWIjo
> > >
> >
> iMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%
> > 7C3000&amp
> > > ;sdata=MrT3Re3YttE9AoqmGHksTqt4jF4vitRPz5lkgpZqSZ4%3D&r
> es
> > erved=0
> > >
> > > 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 at 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 |
> 95
> > ++++++++++++++++++++++++++++++++
> > > arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> |
> > 55 +++++++++++++++++++
> > > arch/arm64/boot/dts/freescale/imx8mm.dtsi
> |
> > 46 +++++++++++++++-
> > > drivers/pci/controller/dwc/pci-imx6.c                        |
> > 73 ++++++++++++++++++++++---
> > > drivers/phy/freescale/Kconfig
> |
> > 9 ++++
> > > drivers/phy/freescale/Makefile
> |
> > 1 +
> > > drivers/phy/freescale/phy-fsl-imx8m-pcie.c                   |
> > 237
> >
> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> > +++++++++++++++++++++
> > > include/dt-bindings/phy/phy-imx8-pcie.h                      |
> > 14 +++++
> > > 9 files changed, 528 insertions(+), 8 deletions(-)
> > >
> > > [PATCH v5 1/8] dt-bindings: phy: phy-imx8-pcie: Add binding for the
> > > [PATCH v5 2/8] dt-bindings: phy: Add imx8 pcie phy driver support
> > > [PATCH v5 3/8] dt-bindings: imx6q-pcie: Add PHY phandles and name
> > > [PATCH v5 4/8] arm64: dts: imx8mm: Add the pcie phy support
> [PATCH
> > v5
> > > 5/8] phy: freescale: pcie: Initialize the imx8 pcie [PATCH v5 6/8]
> > > arm64: dts: imx8mm: Add the pcie support [PATCH v5 7/8] arm64:
> dts:
> > > imx8mm-evk: Add the pcie support on imx8mm [PATCH v5 8/8] PCI:
> > imx:
> > > Add the imx8mm pcie support
> >
> > Richard,
> >
> > Are you posting a v6 of this series or have we already missed the
> > window for 5.16?
> [Richard Zhu] Hi Tim:
> Thanks for your kindly reminder.
> In my original plan, I prefer to merge the codes refine firstly, then issue
> the v6 patch-set after the rebase.
> https://patchwork.kernel.org/project/linux-arm-kernel/cover/163574747
> 8-25562-1-git-send-email-hongxing.zhu at nxp.com/
> Unfortunately, I don't get ack from Lucas for other four patches.
> Anyway, I would post the v6 patch-set immediately after merge Rob's
> comments.
> 
> Best Regards
> Richard Zhu
> >
> > Best regards,
> >
[Richard Zhu] Hi Tim:
The V6 patch-set listed below had been issued.
" https://patchwork.kernel.org/project/linux-phy/cover/1637028976-9201-1-git-send-email-hongxing.zhu@nxp.com/"
GENERIC PHY FRAMEWORK maintainer Kishon and Vinod had been contained in the
 mail-loop.
Do you know who I can ping to pick up the PHY part of this patch-set?

Best Regards
Richard Zhu
> > Tim

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