doc: Move device tree bindings documentation to doc/device-tree-bindings

Currently the U-Boot project contains 2 documentation directories:

- doc/
- Documentation/

The Documentation directory only contains device tree bindings related
content, so move the 3 files to doc/device-tree-bindings/.

Signed-off-by: Breno Lima <breno.lima@nxp.com>

2 files changed, 0 insertions, 89 deletions

diff --git a/Documentation/devicetree/bindings/phy/no-op.txt b/Documentation/devicetree/bindings/phy/no-op.txt
deleted file mode 100644
index a3381122e6..0000000000
--- a/Documentation/devicetree/bindings/phy/no-op.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-NOP PHY driver
-
-This driver is used to stub PHY operations in a driver (USB, SATA).
-This is useful when the 'client' driver (USB, SATA, ...) uses the PHY framework
-and there is no actual PHY harwdare to drive.
-
-Required properties:
-- compatible     : must contain "nop-phy"
-- #phy-cells     : must contain <0>
-
-Example:
-
-nop_phy {
-	compatible = "nop-phy";
-	#phy-cells = <0>;
-};
diff --git a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt b/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt
deleted file mode 100644
index 725ae71ae6..0000000000
--- a/Documentation/devicetree/bindings/phy/phy-stm32-usbphyc.txt
+++ /dev/null
@@ -1,73 +0,0 @@
-STMicroelectronics STM32 USB HS PHY controller
-
-The STM32 USBPHYC block contains a dual port High Speed UTMI+ PHY and a UTMI
-switch. It controls PHY configuration and status, and the UTMI+ switch that
-selects either OTG or HOST controller for the second PHY port. It also sets
-PLL configuration.
-
-USBPHYC
-      |_ PLL
-      |
-      |_ PHY port#1 _________________ HOST controller
-      |                    _                 |
-      |                  / 1|________________|
-      |_ PHY port#2 ----|   |________________
-      |                  \_0|                |
-      |_ UTMI switch_______|          OTG controller
-
-
-Phy provider node
-=================
-
-Required properties:
-- compatible: must be "st,stm32mp1-usbphyc"
-- reg: address and length of the usb phy control register set
-- clocks: phandle + clock specifier for the PLL phy clock
-- #address-cells: number of address cells for phys sub-nodes, must be <1>
-- #size-cells: number of size cells for phys sub-nodes, must be <0>
-
-Optional properties:
-- assigned-clocks: phandle + clock specifier for the PLL phy clock
-- assigned-clock-parents: the PLL phy clock parent
-- resets: phandle + reset specifier
-
-Required nodes: one sub-node per port the controller provides.
-
-Phy sub-nodes
-==============
-
-Required properties:
-- reg: phy port index
-- phy-supply: phandle to the regulator providing 3V3 power to the PHY,
-	      see phy-bindings.txt in the same directory.
-- vdda1v1-supply: phandle to the regulator providing 1V1 power to the PHY
-- vdda1v8-supply: phandle to the regulator providing 1V8 power to the PHY
-- #phy-cells: see phy-bindings.txt in the same directory, must be <0> for PHY
-  port#1 and must be <1> for PHY port#2, to select USB controller
-
-
-Example:
-		usbphyc: usb-phy@5a006000 {
-			compatible = "st,stm32mp1-usbphyc";
-			reg = <0x5a006000 0x1000>;
-			clocks = <&rcc_clk USBPHY_K>;
-			resets = <&rcc_rst USBPHY_R>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			usbphyc_port0: usb-phy@0 {
-				reg = <0>;
-				phy-supply = <&vdd_usb>;
-				vdda1v1-supply = <&reg11>;
-				vdda1v8-supply = <&reg18>
-				#phy-cells = <0>;
-			};
-
-			usbphyc_port1: usb-phy@1 {
-				reg = <1>;
-				phy-supply = <&vdd_usb>;
-				vdda1v1-supply = <&reg11>;
-				vdda1v8-supply = <&reg18>
-				#phy-cells = <1>;
-			};
-		};