[PATCH 02/18] dt-bindings: usb: Add NVIDIA Tegra XUSB device mode controller binding

From: Nagarjuna Kristam
Date: Fri Dec 06 2019 - 05:51:41 EST

Add device-tree binding documentation for the XUSB device mode controller
present on Tegra210 and Tegra186 SoC. This controller supports the USB 3.0
specification.

Signed-off-by: Nagarjuna Kristam <nkristam@xxxxxxxxxx>
---
.../devicetree/bindings/usb/nvidia,tegra-xudc.yaml | 204 +++++++++++++++++++++
1 file changed, 204 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml b/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml
new file mode 100644
index 0000000..b23c451
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml
@@ -0,0 +1,204 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/usb/nvidia,tegra-xudc.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Device tree binding for NVIDIA Tegra XUSB device mode controller (XUDC)
+
+description:
+ The Tegra XUDC controller supports both USB 2.0 HighSpeed/FullSpeed and
+ USB 3.0 SuperSpeed protocols.
+
+maintainers:
+ - Nagarjuna Kristam <nkristam@xxxxxxxxxx>
+ - JC Kuo <jckuo@xxxxxxxxxx>
+ - Thierry Reding <treding@xxxxxxxxxx>
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - const: nvidia,tegra210-xudc # For Tegra210
+ - items:
+ - const: nvidia,tegra186-xudc # For Tegra186
+
+ interrupts:
+ maxItems: 1
+ description: Must contain the XUSB device interrupt.
+
+ power-domains:
+ maxItems: 2
+ description:
+ A list of PM domain specifiers that reference each power-domain
+ used by the XUSB device mode controller. This list must comprise of a
+ specifier for the XUSBA and XUSBB power-domains.
+ See ../power/power_domain.txt and ../arm/tegra/nvidia,tegra20-pmc.txt
+ for details.
+
+ power-domains-names:
+ maxItems: 2
+ description:
+ A list of names that represent each of the specifiers in
+ the 'power-domains' property.
+ items:
+ - const: ss
+ - const: dev
+
+ nvidia,xusb-padctl:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description:
+ phandle to the XUSB pad controller that is used to configure the USB pads
+ used by the XUDC controller.
+
+ phys:
+ minItems: 1
+ description:
+ Must contain an entry for each entry in phy-names.
+ See ../phy/phy-bindings.txt for details.
+
+ phy-names:
+ minItems: 1
+ items:
+ - const: usb2-0
+ - const: usb2-1
+ - const: usb2-2
+ - const: usb2-3
+ - const: usb3-0
+ - const: usb3-1
+ - const: usb3-2
+ - const: usb3-3
+
+ avddio-usb-supply:
+ description: PCIe/USB3 analog logic power supply. Must supply 1.05 V.
+
+ hvdd-usb-supply:
+ description: USB controller power supply. Must supply 3.3 V.
+
+required:
+ - compatible
+ - power-domains
+ - power-domain-names
+ - nvidia,xusb-padctl
+ - phys
+ - phy-names
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ items:
+ const: nvidia,tegra210-xudc
+
+ then:
+ properties:
+ reg:
+ maxItems: 3
+ items:
+ - description: XUSB device controller registers
+ - description: XUSB device PCI Config registers
+ - description: XUSB device registers.
+ reg-names:
+ maxItems: 3
+ items:
+ - const: base
+ - const: fpci
+ - const: ipfs
+ clocks:
+ description:
+ Must contain an entry for all clocks used. See ../clock/clock-bindings.txt
+ for details.
+ maxItems: 5
+ items:
+ - description: Clock to enable core XUSB dev clock.
+ - description: Clock to enable XUSB super speed clock.
+ - description: Clock to enable XUSB super speed dev clock.
+ - description: Clock to enable XUSB high speed dev clock.
+ - description: Clock to enable XUSB full speed dev clock.
+ clock-names:
+ items:
+ - const: dev
+ - const: ss
+ - const: ss_src
+ - const: hs_src
+ - const: fs_src
+ required:
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+ - avddio-usb-supply
+ - hvdd-usb-supply
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: nvidia,tegra186-xudc
+
+ then:
+ properties:
+ reg:
+ maxItems: 2
+ items:
+ - description: XUSB device controller registers
+ - description: XUSB device PCI Config registers
+ reg-names:
+ maxItems: 2
+ items:
+ - const: base
+ - const: fpci
+ clocks:
+ description:
+ Must contain an entry for all clocks used. See ../clock/clock-bindings.txt
+ for details.
+ maxItems: 4
+ items:
+ - description: Clock to enable core XUSB dev clock.
+ - description: Clock to enable XUSB super speed clock.
+ - description: Clock to enable XUSB super speed dev clock.
+ - description: Clock to enable XUSB full speed dev clock.
+ clock-names:
+ items:
+ - const: dev
+ - const: ss
+ - const: ss_src
+ - const: fs_src
+ required:
+ - reg
+ - reg-names
+ - clocks
+ - clock-names
+
+examples:
+ - |
+ #include <dt-bindings/clock/tegra210-car.h>
+ #include <dt-bindings/gpio/tegra-gpio.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ usb@700d0000 {
+ compatible = "nvidia,tegra210-xudc";
+ reg = <0x0 0x700d0000 0x0 0x8000>,
+ <0x0 0x700d8000 0x0 0x1000>,
+ <0x0 0x700d9000 0x0 0x1000>;
+ reg-names = "base", "fpci", "ipfs";
+
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+
+ clocks = <&tegra_car TEGRA210_CLK_XUSB_DEV>,
+ <&tegra_car TEGRA210_CLK_XUSB_SS>,
+ <&tegra_car TEGRA210_CLK_XUSB_SSP_SRC>,
+ <&tegra_car TEGRA210_CLK_XUSB_HS_SRC>,
+ <&tegra_car TEGRA210_CLK_XUSB_FS_SRC>;
+ clock-names = "dev", "ss", "ss_src", "hs_src", "fs_src";
+
+ power-domains = <&pd_xusbdev>, <&pd_xusbss>;
+ power-domain-names = "dev", "ss";
+
+ nvidia,xusb-padctl = <&padctl>;
+
+ phys = <&micro_b>;
+ phy-names = "usb2-0";
+
+ avddio-usb-supply = <&vdd_pex_1v05>;
+ hvdd-usb-supply = <&vdd_3v3_sys>;
+ };
--
2.7.4