Re: [PATCH v10 00/14] PCI: imx6: Clean up and add imx95 pci support

[Lorenzo Pieralisi <lpieralisi@kernel.org>]

On Mon, Feb 19, 2024 at 10:11:45AM -0500, Frank Li wrote:
> On Mon, Feb 05, 2024 at 12:33:21PM -0500, Frank Li wrote:
> > first 6 patches use drvdata: flags to simplify some switch-case code.
> > Improve maintaince and easy to read code.
> > 
> 
> @Lorenzo Pieralisi:
> 
> 	Do you have chance to look other patches?

Yes, they are fine.

> 	Mani's apply EP side change. 
> 	'PCI: imx6: Add iMX95 Endpoint (EP) support' need be rebased. 

What does that mean ? I think it is best to pull the series in a single
branch if there are not any dependencies on other branches.

Thanks,
Lorenzo

> Frank
> 
> > Then add imx95 basic pci host function.
> > 
> > follow two patch do endpoint code clean up.
> > Then add imx95 basic endpont function.
> > 
> > Compared with v2, added EP function support and some fixes,  please change
> > notes at each patches.
> > 
> > Change from v9 to v10
> > - remove two patches:
> > >   dt-bindings: imx6q-pcie: Add linux,pci-domain as required for iMX8MQ
> > >   PCI: imx6: Using "linux,pci-domain" as slot ID
> > it is not good solution to fixed hardcode check to get controller id.
> > Will see better solution later.
> > 
> > dt-binding pass pcie node:
> > 
> > pcie0: pcie@4c300000 {
> >                         compatible = "fsl,imx95-pcie";
> >                         reg = <0 0x4c300000 0 0x40000>,
> >                                 <0 0x4c360000 0 0x10000>,
> >                                 <0 0x4c340000 0 0x20000>,
> >                                 <0 0x60100000 0 0xfe00000>;
> >                         reg-names = "dbi", "atu", "app", "config";
> >                         #address-cells = <3>;
> >                         #size-cells = <2>;
> >                         device_type = "pci";
> >                         linux,pci-domain = <0>;
> >                         bus-range = <0x00 0xff>;
> >                         ranges = <0x81000000 0x0 0x00000000 0x0 0x6ff00000 0 0x00100000>,
> >                                  <0x82000000 0x0 0x10000000 0x9 0x10000000 0 0x10000000>;
> >                         num-lanes = <1>;
> >                         num-viewport = <8>;
> >                         interrupts = <GIC_SPI 310 IRQ_TYPE_LEVEL_HIGH>;
> >                         interrupt-names = "msi";
> >                         #interrupt-cells = <1>;
> >                         interrupt-map-mask = <0 0 0 0x7>;
> >                         interrupt-map = <0 0 0 1 &gic 0 0 GIC_SPI 309 IRQ_TYPE_LEVEL_HIGH>,
> >                                         <0 0 0 2 &gic 0 0 GIC_SPI 308 IRQ_TYPE_LEVEL_HIGH>,
> >                                         <0 0 0 3 &gic 0 0 GIC_SPI 307 IRQ_TYPE_LEVEL_HIGH>,
> >                                         <0 0 0 4 &gic 0 0 GIC_SPI 306 IRQ_TYPE_LEVEL_HIGH>;
> >                         fsl,max-link-speed = <3>;
> >                         clocks = <&scmi_clk IMX95_CLK_HSIO>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPLL>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
> >                         clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux";
> >                         assigned-clocks =<&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
> >                                          <&scmi_clk IMX95_CLK_HSIOPLL>,
> >                                          <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
> >                         assigned-clock-rates = <3600000000>, <100000000>, <10000000>;
> >                         assigned-clock-parents = <0>, <0>,
> >                                                  <&scmi_clk IMX95_CLK_SYSPLL1_PFD1_DIV2>;
> >                         power-domains = <&scmi_devpd IMX95_PD_HSIO_TOP>;
> >                         /* 0x30~0x37 stream id for pci0 */
> >                         /*
> >                          * iommu-map = <0x000 &apps_smmu 0x30 0x1>,
> >                          * <0x100 &apps_smmu 0x31 0x1>;
> >                          */
> >                         status = "disabled";
> >                 };
> > 
> > pcie1: pcie-ep@4c380000 {
> >                         compatible = "fsl,imx95-pcie-ep";
> >                         reg = <0 0x4c380000 0 0x20000>,
> >                               <0 0x4c3e0000 0 0x1000>,
> >                               <0 0x4c3a0000 0 0x1000>,
> >                               <0 0x4c3c0000 0 0x10000>,
> >                               <0 0x4c3f0000 0 0x10000>,
> >                               <0xa 0 1 0>;
> >                         reg-names = "dbi", "atu", "dbi2", "app", "dma", "addr_space";
> >                         interrupts = <GIC_SPI 317 IRQ_TYPE_LEVEL_HIGH>;
> >                         interrupt-names = "dma";
> >                         fsl,max-link-speed = <3>;
> >                         clocks = <&scmi_clk IMX95_CLK_HSIO>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPLL>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
> >                                  <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
> >                         clock-names = "pcie", "pcie_bus", "pcie_phy", "pcie_aux";
> >                         assigned-clocks =<&scmi_clk IMX95_CLK_HSIOPLL_VCO>,
> >                                          <&scmi_clk IMX95_CLK_HSIOPLL>,
> >                                          <&scmi_clk IMX95_CLK_HSIOPCIEAUX>;
> >                         assigned-clock-rates = <3600000000>, <100000000>, <10000000>;
> >                         assigned-clock-parents = <0>, <0>,
> >                                                  <&scmi_clk IMX95_CLK_SYSPLL1_PFD1_DIV2>;
> >                         power-domains = <&scmi_devpd IMX95_PD_HSIO_TOP>;
> >                         status = "disabled";
> >                 };
> > 
> > Frank Li (13):
> >   PCI: imx6: Simplify clock handling by using clk_bulk*() function
> >   PCI: imx6: Simplify phy handling by using IMX6_PCIE_FLAG_HAS_PHYDRV
> >   PCI: imx6: Simplify reset handling by using by using
> >     *_FLAG_HAS_*_RESET
> >   PCI: imx6: Simplify ltssm_enable() by using ltssm_off and ltssm_mask
> >   PCI: imx6: Simplify configure_type() by using mode_off and mode_mask
> >   PCI: imx6: Simplify switch-case logic by involve init_phy callback
> >   dt-bindings: imx6q-pcie: Clean up irrationality clocks check
> >   dt-bindings: imx6q-pcie: Restruct reg and reg-name
> >   PCI: imx6: Add iMX95 PCIe Root Complex support
> >   PCI: imx6: Clean up get addr_space code
> >   PCI: imx6: Add epc_features in imx6_pcie_drvdata
> >   dt-bindings: imx6q-pcie: Add iMX95 pcie endpoint compatible string
> >   PCI: imx6: Add iMX95 Endpoint (EP) support
> > 
> > Richard Zhu (1):
> >   dt-bindings: imx6q-pcie: Add imx95 pcie compatible string
> > 
> >  .../bindings/pci/fsl,imx6q-pcie-common.yaml   |  17 +-
> >  .../bindings/pci/fsl,imx6q-pcie-ep.yaml       |  46 +-
> >  .../bindings/pci/fsl,imx6q-pcie.yaml          |  49 +-
> >  drivers/pci/controller/dwc/pci-imx6.c         | 634 ++++++++++--------
> >  4 files changed, 436 insertions(+), 310 deletions(-)
> > 
> > -- 
> > 2.34.1
> >