[PATCH 4/6] dt-bindings: PCI: tegra: Add PCIe slot supplies regulator entries

Vidya Sagar
2019-08-26T07:32:19Z

Add optional bindings "vpcie3v3-supply" and "vpcie12v-supply" to describe
regulators of a PCIe slot's supplies 3.3V and 12V provided the platform
is designed to have regulator controlled slot supplies.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
.../devicetree/bindings/pci/nvidia,tegra194-pcie.txt | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt
index 0ac1b867ac24..b739f92da58e 100644
--- a/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt
+++ b/Documentation/devicetree/bindings/pci/nvidia,tegra194-pcie.txt
@@ -104,6 +104,12 @@ Optional properties:
specified in microseconds
- nvidia,aspm-l0s-entrance-latency-us: ASPM L0s entrance latency to be
specified in microseconds
+- vpcie3v3-supply: A phandle to the regulator node that supplies 3.3V to the slot
+ if the platform has one such slot. (Ex:- x16 slot owned by C5 controller
+ in p2972-0000 platform).
+- vpcie12v-supply: A phandle to the regulator node that supplies 12V to the slot
+ if the platform has one such slot. (Ex:- x16 slot owned by C5 controller
+ in p2972-0000 platform).

Examples:
=========
@@ -156,6 +162,8 @@ Tegra194:
0xc2000000 0x18 0x00000000 0x18 0x00000000 0x4 0x00000000>; /* prefetchable memory (16GB) */

vddio-pex-ctl-supply = <&vdd_1v8ao>;
+ vpcie3v3-supply = <&vdd_3v3_pcie>;
+ vpcie12v-supply = <&vdd_12v_pcie>;

phys = <&p2u_hsio_2>, <&p2u_hsio_3>, <&p2u_hsio_4>,
<&p2u_hsio_5>;
--
2.17.1