dt-bindings: pci: tegra: Add Tegra210 support

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>

diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt b/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
index b8cc395fffea41bde456c2f13be7dc8de885dc7b..982a74ea6df9b31a2cbbb076e5359ae33026f506 100644 (file)
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
@@ -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";
+               };
+       };