linux-kernel - Re: [PATCH v3 0/9] add the imx8m pcie phy driver and imx8mm pcie support

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Date:   Tue, 26 Oct 2021 15:56:38 +0000
From:   Marcel Ziswiler <marcel.ziswiler@...adex.com>
To:     "kishon@...com" <kishon@...com>,
        "vkoul@...nel.org" <vkoul@...nel.org>,
        "robh@...nel.org" <robh@...nel.org>,
        "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "tharvey@...eworks.com" <tharvey@...eworks.com>,
        "galak@...nel.crashing.org" <galak@...nel.crashing.org>,
        "hongxing.zhu@....com" <hongxing.zhu@....com>
CC:     "linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-imx@....com" <linux-imx@....com>
Subject: Re: [PATCH v3 0/9] add the imx8m pcie phy driver and imx8mm pcie
 support

On Tue, 2021-10-12 at 16:41 +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[6-9] 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 PHY driver patch-set.

Whole series:

Tested-by: Marcel Ziswiler <marcel.ziswiler@...adex.com>

BTW: I tested it on Verdin iMX8M Mini V1.1B without an external PCIe oscillator aka setting fsl,refclk-pad-mode
to IMX8_PCIE_REFCLK_PAD_OUTPUT which worked like a charm. Thanks!

> [1] https://patchwork.ozlabs.org/project/linux-pci/patch/20210510141509.929120-3-l.stach@pengutronix.de/
> [2] https://patchwork.kernel.org/project/linux-arm-kernel/cover/20210910202640.980366-1-l.stach@pengutronix.de/
> 
> 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 |  79 +++++++++++++++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi                |  53 ++++++++++++++++++++
> arch/arm64/boot/dts/freescale/imx8mm.dtsi                    |  46 ++++++++++++++++-
> drivers/pci/controller/dwc/pci-imx6.c                        |  63 ++++++++++++++++++++++-
> drivers/phy/freescale/Kconfig                                |   9 ++++
> drivers/phy/freescale/Makefile                               |   1 +
> drivers/phy/freescale/phy-fsl-imx8m-pcie.c                   | 218
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> include/dt-bindings/phy/phy-imx8-pcie.h                      |  14 ++++++
> 9 files changed, 486 insertions(+), 3 deletions(-)
> 
> [PATCH v3 1/9] dt-bindings: phy: phy-imx8-pcie: Add binding for the
> [PATCH v3 2/9] dt-bindings: phy: add imx8 pcie phy driver support
> [PATCH v3 3/9] arm64: dts: imx8mm: add the pcie phy support
> [PATCH v3 4/9] arm64: dts: imx8mm-evk: add the pcie phy support
> [PATCH v3 5/9] phy: freescale: pcie: initialize the imx8 pcie
> [PATCH v3 6/9] dt-bindings: imx6q-pcie: Add PHY phandles and name
> [PATCH v3 7/9] arm64: dts: imx8mm: add the pcie support
> [PATCH v3 8/9] arm64: dts: imx8mm-evk: add the pcie support on imx8mm
> [PATCH v3 9/9] PCI: imx: add the imx8mm pcie support