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dt-bindings: pci: tegra: Add Tegra210 support

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Add support for the PCI host controller found on Tegra210 SoCs. It is very
similar to the variant found on Tegra124, with a couple of small
differences regarding the power supplies.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Bjorn Helgaas <helgaas@kernel.org>
This commit is contained in:
Thierry Reding 2016-11-25 11:57:13 +01:00 committed by Bjorn Helgaas
parent 76f2541491
commit 528925c439
1 changed files with 110 additions and 0 deletions
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110
Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
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@ -110,6 +110,20 @@ Power supplies for Tegra124:
- avdd-pll-erefe-supply: Power supply for PLLE (shared with USB3). Must
supply 1.05 V.
Power supplies for Tegra210:
- Required:
- avdd-pll-uerefe-supply: Power supply for PLLE (shared with USB3). Must
supply 1.05 V.
- hvddio-pex-supply: High-voltage supply for PCIe I/O and PCIe output
clocks. Must supply 1.8 V.
- dvddio-pex-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
- dvdd-pex-pll-supply: Power supply for dedicated (internal) PCIe PLL. Must
supply 1.05 V.
- hvdd-pex-pll-e-supply: High-voltage supply for PLLE (shared with USB3).
Must supply 3.3 V.
- vddio-pex-ctl-supply: Power supply for PCIe control I/O partition. Must
supply 1.8 V.
Root ports are defined as subnodes of the PCIe controller node.
Required properties:
@ -436,3 +450,99 @@ Board DTS:
status = "okay";
};
};
Tegra210:
---------
SoC DTSI:
pcie-controller@01003000 {
compatible = "nvidia,tegra210-pcie";
device_type = "pci";
reg = <0x0 0x01003000 0x0 0x00000800 /* PADS registers */
0x0 0x01003800 0x0 0x00000800 /* AFI registers */
0x0 0x02000000 0x0 0x10000000>; /* configuration space */
reg-names = "pads", "afi", "cs";
interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>, /* controller interrupt */
<GIC_SPI 99 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 98 IRQ_TYPE_LEVEL_HIGH>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
ranges = <0x82000000 0 0x01000000 0x0 0x01000000 0 0x00001000 /* port 0 configuration space */
0x82000000 0 0x01001000 0x0 0x01001000 0 0x00001000 /* port 1 configuration space */
0x81000000 0 0x0 0x0 0x12000000 0 0x00010000 /* downstream I/O (64 KiB) */
0x82000000 0 0x13000000 0x0 0x13000000 0 0x0d000000 /* non-prefetchable memory (208 MiB) */
0xc2000000 0 0x20000000 0x0 0x20000000 0 0x20000000>; /* prefetchable memory (512 MiB) */
clocks = <&tegra_car TEGRA210_CLK_PCIE>,
<&tegra_car TEGRA210_CLK_AFI>,
<&tegra_car TEGRA210_CLK_PLL_E>,
<&tegra_car TEGRA210_CLK_CML0>;
clock-names = "pex", "afi", "pll_e", "cml";
resets = <&tegra_car 70>,
<&tegra_car 72>,
<&tegra_car 74>;
reset-names = "pex", "afi", "pcie_x";
status = "disabled";
pci@1,0 {
device_type = "pci";
assigned-addresses = <0x82000800 0 0x01000000 0 0x1000>;
reg = <0x000800 0 0 0 0>;
status = "disabled";
#address-cells = <3>;
#size-cells = <2>;
ranges;
nvidia,num-lanes = <4>;
};
pci@2,0 {
device_type = "pci";
assigned-addresses = <0x82001000 0 0x01001000 0 0x1000>;
reg = <0x001000 0 0 0 0>;
status = "disabled";
#address-cells = <3>;
#size-cells = <2>;
ranges;
nvidia,num-lanes = <1>;
};
};
Board DTS:
pcie-controller@01003000 {
status = "okay";
avdd-pll-uerefe-supply = <&avdd_1v05_pll>;
hvddio-pex-supply = <&vdd_1v8>;
dvddio-pex-supply = <&vdd_pex_1v05>;
dvdd-pex-pll-supply = <&vdd_pex_1v05>;
hvdd-pex-pll-e-supply = <&vdd_1v8>;
vddio-pex-ctl-supply = <&vdd_1v8>;
pci@1,0 {
phys = <&{/padctl@7009f000/pads/pcie/lanes/pcie-0}>,
<&{/padctl@7009f000/pads/pcie/lanes/pcie-1}>,
<&{/padctl@7009f000/pads/pcie/lanes/pcie-2}>,
<&{/padctl@7009f000/pads/pcie/lanes/pcie-3}>;
phy-names = "pcie-0", "pcie-1", "pcie-2", "pcie-3";
status = "okay";
};
pci@2,0 {
phys = <&{/padctl@7009f000/pads/pcie/lanes/pcie-4}>;
phy-names = "pcie-0";
status = "okay";
};
};