Re: [PATCH V10 11/15] arm64: tegra: Add P2U and PCIe controller nodes to Tegra194 DT

[Thierry Reding <thierry.reding@gmail.com>]

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On Mon, Jun 24, 2019 at 01:02:06PM +0530, Vidya Sagar wrote:
> On 6/20/2019 4:25 PM, Thierry Reding wrote:
> > On Wed, Jun 12, 2019 at 03:23:35PM +0530, Vidya Sagar wrote:
> > > Add P2U (PIPE to UPHY) and PCIe controller nodes to device tree.
> > > The Tegra194 SoC contains six PCIe controllers and twenty P2U instances
> > > grouped into two different PHY bricks namely High-Speed IO (HSIO-12 P2Us)
> > > and NVIDIA High Speed (NVHS-8 P2Us) respectively.
> > > 
> > > Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> > > ---
> > > Changes since [v9]:
> > > * None
> > > 
> > > Changes since [v8]:
> > > * None
> > > 
> > > Changes since [v7]:
> > > * Replaced 'core_apb' with 'apb' in reset names
> > > * Used macros instead of hardcoded numbers in 'interrupt-map' property
> > > * Aligned 'ranges' entries
> > > 
> > > Changes since [v6]:
> > > * Removed properties "nvidia,disable-aspm-states" & "nvidia,controller-id".
> > > * Modified property "nvidia,bpmp" to include controller-id as well.
> > > 
> > > Changes since [v5]:
> > > * Changes 'p2u@xxxxxxxx' to 'phy@xxxxxxxx'
> > > * Arranged all PCIe nodes in the order of their addresses
> > > 
> > > Changes since [v4]:
> > > * None
> > > 
> > > Changes since [v3]:
> > > * None
> > > 
> > > Changes since [v2]:
> > > * Included 'hsio' or 'nvhs' in P2U node's label names to reflect which brick
> > >    they belong to
> > > * Removed leading zeros in unit address
> > > 
> > > Changes since [v1]:
> > > * Flattened all P2U nodes by removing 'hsio-p2u' and 'nvhs-p2u' super nodes
> > > * Changed P2U nodes compatible string from 'nvidia,tegra194-phy-p2u' to 'nvidia,tegra194-p2u'
> > > * Changed reg-name from 'base' to 'ctl'
> > > * Updated all PCIe nodes according to the changes made to DT documentation file
> > > 
> > >   arch/arm64/boot/dts/nvidia/tegra194.dtsi | 437 +++++++++++++++++++++++
> > >   1 file changed, 437 insertions(+)
> > 
> > Applied to for-5.3/arm64/dt, thanks.
> > 
> > I did end up sorting the new nodes differently so that they are ordered
> > according to the general rules (sort by unit-address, then
> > alphabetically). That's slightly complicated by the fact that the PCI
> > controllers have registers that seem to be right in the middle of the
> > host1x aperture, so I had to bend the rules a little.
> > 
> > Thierry
> 
> I see that you moved all PCIe nodes under CBB node. There is an issue with that.
> PCIe nodes have apertures defined in both 32-bit region and 64-bit region which
> are mentioned through "ranges" property. Apertures defined in 64-bit region do not
> fit within "ranges" defined for CBB region which can handle only 32-bit "ranges" of
> CBB sub-nodes and ends @ 0x40000000. It is because of this reason that I kept PCIe
> nodes outside of CBB master node. Do you agree with my understanding? If yes, can
> you please move PCIe nodes out of CBB node? (Also in platform dts file)

Yeah, I noticed this discrepancy while doing the final builds and before
pushing things out. I think the problem here is that we restricted the
CBB region to #address-cells = <1> where it really should've been 2
cells for the addresses given the size of the addressable region. I've
reverted my changes for now, but I think eventually we'll want to adjust
CBB to be #address-cells = <2> and maybe even #size-cells = <2> to take
into account the PCIe ranges.

Another possibility might be that PCI is actually on a different "bus"
(i.e. not CBB) in which case it'd be best to model that. But the TRM is
not very clear about the bus hierarchy.

Thierry

> 
> Thanks,
> Vidya Sagar
> 
> > 
> > > diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> > > index c77ca211fa8f..feba034f26f0 100644
> > > --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> > > +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
> > > @@ -884,6 +884,166 @@
> > >   				nvidia,interface = <3>;
> > >   			};
> > >   		};
> > > +
> > > +		p2u_hsio_0: phy@3e10000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e10000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_1: phy@3e20000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e20000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_2: phy@3e30000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e30000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_3: phy@3e40000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e40000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_4: phy@3e50000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e50000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_5: phy@3e60000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e60000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_6: phy@3e70000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e70000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_7: phy@3e80000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e80000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_8: phy@3e90000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03e90000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_9: phy@3ea0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03ea0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_0: phy@3eb0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03eb0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_1: phy@3ec0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03ec0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_2: phy@3ed0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03ed0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_3: phy@3ee0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03ee0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_4: phy@3ef0000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03ef0000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_5: phy@3f00000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03f00000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_6: phy@3f10000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03f10000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_nvhs_7: phy@3f20000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03f20000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_10: phy@3f30000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03f30000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > > +
> > > +		p2u_hsio_11: phy@3f40000 {
> > > +			compatible = "nvidia,tegra194-p2u";
> > > +			reg = <0x03f40000 0x10000>;
> > > +			reg-names = "ctl";
> > > +
> > > +			#phy-cells = <0>;
> > > +		};
> > >   	};
> > >   	sysram@40000000 {
> > > @@ -1054,4 +1214,281 @@
> > >   				(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
> > >   		interrupt-parent = <&gic>;
> > >   	};
> > > +
> > > +	pcie@14100000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX1A>;
> > > +		reg = <0x00 0x14100000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x30000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x30040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x30080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <1>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <1>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_1>;
> > > +		clock-names = "core";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX0_CORE_1_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX0_CORE_1>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		nvidia,bpmp = <&bpmp 1>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x30100000 0x0  0x30100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x12 0x00000000 0x12 0x00000000 0x0 0x30000000   /* prefetchable memory (768MB) */
> > > +			  0x82000000 0x0  0x40000000 0x12 0x30000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> > > +	};
> > > +
> > > +	pcie@14120000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX1A>;
> > > +		reg = <0x00 0x14120000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x32000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x32040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x32080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <1>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <2>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_2>;
> > > +		clock-names = "core";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX0_CORE_2_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX0_CORE_2>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		nvidia,bpmp = <&bpmp 2>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x32100000 0x0  0x32100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x12 0x40000000 0x12 0x40000000 0x0 0x30000000   /* prefetchable memory (768MB) */
> > > +			  0x82000000 0x0  0x40000000 0x12 0x70000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> > > +	};
> > > +
> > > +	pcie@14140000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX1A>;
> > > +		reg = <0x00 0x14140000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x34000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x34040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x34080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <1>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <3>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_3>;
> > > +		clock-names = "core";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX0_CORE_3_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX0_CORE_3>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		nvidia,bpmp = <&bpmp 3>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x34100000 0x0  0x34100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x12 0x80000000 0x12 0x80000000 0x0 0x30000000   /* prefetchable memory (768MB) */
> > > +			  0x82000000 0x0  0x40000000 0x12 0xb0000000 0x0 0x10000000>; /* non-prefetchable memory (256MB) */
> > > +	};
> > > +
> > > +	pcie@14160000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX4A>;
> > > +		reg = <0x00 0x14160000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x36000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x36040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x36080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <4>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <4>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_4>;
> > > +		clock-names = "core";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX0_CORE_4_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX0_CORE_4>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 52 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 51 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		nvidia,bpmp = <&bpmp 4>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x36100000 0x0  0x36100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x14 0x00000000 0x14 0x00000000 0x3 0x40000000   /* prefetchable memory (13GB) */
> > > +			  0x82000000 0x0  0x40000000 0x17 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> > > +	};
> > > +
> > > +	pcie@14180000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX8B>;
> > > +		reg = <0x00 0x14180000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x38000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x38040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x38080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <8>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <0>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX0_CORE_0>;
> > > +		clock-names = "core";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX0_CORE_0_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX0_CORE_0>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 73 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		nvidia,bpmp = <&bpmp 0>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x38100000 0x0  0x38100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x18 0x00000000 0x18 0x00000000 0x3 0x40000000   /* prefetchable memory (13GB) */
> > > +			  0x82000000 0x0  0x40000000 0x1b 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> > > +	};
> > > +
> > > +	pcie@141a0000 {
> > > +		compatible = "nvidia,tegra194-pcie", "snps,dw-pcie";
> > > +		power-domains = <&bpmp TEGRA194_POWER_DOMAIN_PCIEX8A>;
> > > +		reg = <0x00 0x141a0000 0x0 0x00020000   /* appl registers (128K)      */
> > > +		       0x00 0x3a000000 0x0 0x00040000   /* configuration space (256K) */
> > > +		       0x00 0x3a040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
> > > +		       0x00 0x3a080000 0x0 0x00040000>; /* DBI reg space (256K)       */
> > > +		reg-names = "appl", "config", "atu_dma", "dbi";
> > > +
> > > +		status = "disabled";
> > > +
> > > +		#address-cells = <3>;
> > > +		#size-cells = <2>;
> > > +		device_type = "pci";
> > > +		num-lanes = <8>;
> > > +		num-viewport = <8>;
> > > +		linux,pci-domain = <5>;
> > > +
> > > +		clocks = <&bpmp TEGRA194_CLK_PEX1_CORE_5>,
> > > +			<&bpmp TEGRA194_CLK_PEX1_CORE_5M>;
> > > +		clock-names = "core", "core_m";
> > > +
> > > +		resets = <&bpmp TEGRA194_RESET_PEX1_CORE_5_APB>,
> > > +			 <&bpmp TEGRA194_RESET_PEX1_CORE_5>;
> > > +		reset-names = "apb", "core";
> > > +
> > > +		interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>,	/* controller interrupt */
> > > +			     <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;	/* MSI interrupt */
> > > +		interrupt-names = "intr", "msi";
> > > +
> > > +		nvidia,bpmp = <&bpmp 5>;
> > > +
> > > +		#interrupt-cells = <1>;
> > > +		interrupt-map-mask = <0 0 0 0>;
> > > +		interrupt-map = <0 0 0 0 &gic GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
> > > +
> > > +		supports-clkreq;
> > > +		nvidia,aspm-cmrt-us = <60>;
> > > +		nvidia,aspm-pwr-on-t-us = <20>;
> > > +		nvidia,aspm-l0s-entrance-latency-us = <3>;
> > > +
> > > +		bus-range = <0x0 0xff>;
> > > +		ranges = <0x81000000 0x0  0x3a100000 0x0  0x3a100000 0x0 0x00100000   /* downstream I/O (1MB) */
> > > +			  0xc2000000 0x1c 0x00000000 0x1c 0x00000000 0x3 0x40000000   /* prefetchable memory (13GB) */
> > > +			  0x82000000 0x0  0x40000000 0x1f 0x40000000 0x0 0xc0000000>; /* non-prefetchable memory (3GB) */
> > > +	};
> > >   };
> > > -- 
> > > 2.17.1
> > > 
> 

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