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authorThierry Reding <treding@nvidia.com>2014-08-26 17:11:38 +0200
committerBjorn Helgaas <bhelgaas@google.com>2014-09-16 16:55:49 -0600
commit7f1f054b3fac0b19ec0d74e3e18b73785c26f0a8 (patch)
tree57fe5853eaa5f0e8763635a29f3c82a1dbbb9337 /Documentation/devicetree/bindings/pci
parentec73276204f06b6446a9c9b70173a1c15f6de536 (diff)
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PCI: tegra: Add Tegra124 support
The PCIe controller on Tegra124 has two root ports that can be used in a x4/x1 or x2/x1 configuration and can run at PCIe 2.0 link speeds (up to 5 GT/s). The PHY programming has been moved into a separate controller, so the driver now needs to request an external PHY referenced using the device tree. Tested-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'Documentation/devicetree/bindings/pci')
-rw-r--r--Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt25
1 files changed, 24 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt b/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
index 0823362..d763e04 100644
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra20-pcie.txt
@@ -1,7 +1,10 @@
NVIDIA Tegra PCIe controller
Required properties:
-- compatible: "nvidia,tegra20-pcie" or "nvidia,tegra30-pcie"
+- compatible: Must be one of:
+ - "nvidia,tegra20-pcie"
+ - "nvidia,tegra30-pcie"
+ - "nvidia,tegra124-pcie"
- device_type: Must be "pci"
- reg: A list of physical base address and length for each set of controller
registers. Must contain an entry for each entry in the reg-names property.
@@ -57,6 +60,11 @@ Required properties:
- afi
- pcie_x
+Required properties on Tegra124 and later:
+- phys: Must contain an entry for each entry in phy-names.
+- phy-names: Must include the following entries:
+ - pcie
+
Power supplies for Tegra20:
- avdd-pex-supply: Power supply for analog PCIe logic. Must supply 1.05 V.
- vdd-pex-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
@@ -84,6 +92,21 @@ Power supplies for Tegra30:
- avdd-pexb-supply: Power supply for analog PCIe logic. Must supply 1.05 V.
- vdd-pexb-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
+Power supplies for Tegra124:
+- Required:
+ - avddio-pex-supply: Power supply for analog PCIe logic. Must supply 1.05 V.
+ - dvddio-pex-supply: Power supply for digital PCIe I/O. Must supply 1.05 V.
+ - avdd-pex-pll-supply: Power supply for dedicated (internal) PCIe PLL. Must
+ supply 1.05 V.
+ - hvdd-pex-supply: High-voltage supply for PCIe I/O and PCIe output clocks.
+ Must supply 3.3 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 2.8-3.3 V.
+ - avdd-pll-erefe-supply: Power supply for PLLE (shared with USB3). Must
+ supply 1.05 V.
+
Root ports are defined as subnodes of the PCIe controller node.
Required properties:
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