| Message ID | 20210723204958.7186-6-tharvey@gateworks.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add IMX8M Mini PCI support | expand |
On Fri, Jul 23, 2021 at 2:50 PM Tim Harvey <tharvey@gateworks.com> wrote: > > Add PCIe node for PCIe support. > > Signed-off-by: Tim Harvey <tharvey@gateworks.com> > --- > arch/arm64/boot/dts/freescale/imx8mm.dtsi | 36 +++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > index 3bec6b8d52a0..45017f50a11b 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > @@ -1134,6 +1134,10 @@ > reg = <0x32e50200 0x200>; > }; > > + pcie_phy: pcie-phy@32f00000 { > + compatible = "fsl,imx7d-pcie-phy"; > + reg = <0x32f00000 0x10000>; The phy really has 64KB worth of registers? This wastes virtual space too, but I guess that's 'free' on 64-bit. > + }; > }; > > dma_apbh: dma-controller@33000000 { > @@ -1233,5 +1237,37 @@ > reg = <0x3d800000 0x400000>; > interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; > }; > + > + pcie0: pcie@33800000 { > + compatible = "fsl,imx8mm-pcie"; > + reg = <0x33800000 0x400000>, > + <0x1ff00000 0x80000>; > + reg-names = "dbi", "config"; I don't think the DBI space ever has 4MB of registers. And IIRC, only 4KB is used for config space unless ECAM is used. > + #address-cells = <3>; > + #size-cells = <2>; > + device_type = "pci"; > + bus-range = <0x00 0xff>; > + ranges = <0x81000000 0 0x00000000 0x1ff80000 0 0x00010000 /* downstream I/O 64KB */ > + 0x82000000 0 0x18000000 0x18000000 0 0x07f00000>; /* non-prefetchable memory */ > + num-lanes = <1>; > + num-viewport = <4>; This is deprecated and ignored. The driver has gotten smarter and detects this. > + interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>; > + interrupt-names = "msi"; > + #interrupt-cells = <1>; > + interrupt-map-mask = <0 0 0 0x7>; > + interrupt-map = <0 0 0 1 &gic GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 2 &gic GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 3 &gic GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>, > + <0 0 0 4 &gic GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>; > + fsl,max-link-speed = <2>; There's a standard property for this. > + power-domains = <&pgc_pcie>; > + resets = <&src IMX8MQ_RESET_PCIEPHY>, > + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_EN>, > + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_CLK_REQ>, > + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF>; > + reset-names = "pciephy", "apps", "clkreq", "turnoff"; The phy reset belongs in the phy node. > + fsl,imx7d-pcie-phy = <&pcie_phy>; Didn't we deprecate this? Either way, use the phy binding. > + status = "disabled"; > + }; > }; > }; > -- > 2.17.1 >
diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 3bec6b8d52a0..45017f50a11b 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -1134,6 +1134,10 @@ reg = <0x32e50200 0x200>; }; + pcie_phy: pcie-phy@32f00000 { + compatible = "fsl,imx7d-pcie-phy"; + reg = <0x32f00000 0x10000>; + }; }; dma_apbh: dma-controller@33000000 { @@ -1233,5 +1237,37 @@ reg = <0x3d800000 0x400000>; interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>; }; + + pcie0: pcie@33800000 { + compatible = "fsl,imx8mm-pcie"; + reg = <0x33800000 0x400000>, + <0x1ff00000 0x80000>; + reg-names = "dbi", "config"; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + bus-range = <0x00 0xff>; + ranges = <0x81000000 0 0x00000000 0x1ff80000 0 0x00010000 /* downstream I/O 64KB */ + 0x82000000 0 0x18000000 0x18000000 0 0x07f00000>; /* non-prefetchable memory */ + num-lanes = <1>; + num-viewport = <4>; + interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "msi"; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0x7>; + interrupt-map = <0 0 0 1 &gic GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 2 &gic GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 3 &gic GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>, + <0 0 0 4 &gic GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>; + fsl,max-link-speed = <2>; + power-domains = <&pgc_pcie>; + resets = <&src IMX8MQ_RESET_PCIEPHY>, + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_EN>, + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_CLK_REQ>, + <&src IMX8MQ_RESET_PCIE_CTRL_APPS_TURNOFF>; + reset-names = "pciephy", "apps", "clkreq", "turnoff"; + fsl,imx7d-pcie-phy = <&pcie_phy>; + status = "disabled"; + }; }; };
Add PCIe node for PCIe support. Signed-off-by: Tim Harvey <tharvey@gateworks.com> --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 36 +++++++++++++++++++++++ 1 file changed, 36 insertions(+)