@@ -0,0 +1,144 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/cix,sky1-usbssp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: CIX Sky1 Cadence USBSSP Controller
+
+maintainers:
+ - Hongliang Yang <hongliang.yang@cixtech.com>
+
+description:
+ The CIX Sky1 USBSSP controller is based on the Cadence USBSSP DRD
+ controller. The integration adds glue registers and mode strap controls
+ in the Sky1 S5 system controller. The CIX glue node wraps a Cadence
+ USBSSP core as a child node. The per-controller RCSU control/status
+ registers live in a shared RCSU region and are accessed through the
+ cix,usb-rcsu phandle.
+
+properties:
+ compatible:
+ const: cix,sky1-usbssp
+
+ cix,usb-rcsu:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: |
+ A phandle to the USBSSP RCSU system controller region (see
+ cix,sky1-usbss-rcsu.yaml) followed by two cells: the offset of
+ the AXI property configuration register and the offset of the
+ controller status register, both relative to the RCSU region.
+ items:
+ items:
+ - description: phandle to the USBSSP RCSU syscon node
+ - description: offset of the AXI property configuration register
+ - description: offset of the controller status register
+
+ clocks:
+ items:
+ - description: Start-of-frame clock
+ - description: AXI bus clock
+ - description: Low-power mode clock
+ - description: APB register interface clock
+
+ clock-names:
+ items:
+ - const: sof
+ - const: axi
+ - const: lpm
+ - const: apb
+
+ resets:
+ items:
+ - description: APB register reset
+ - description: Controller reset
+
+ reset-names:
+ items:
+ - const: apb
+ - const: core
+
+ cix,usb-syscon:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ Phandle to the Sky1 S5 system controller used to program USB mode
+ strap controls.
+
+ "#address-cells":
+ const: 2
+
+ "#size-cells":
+ const: 2
+
+ ranges: true
+
+patternProperties:
+ "^usb@[0-9a-f]+$":
+ $ref: cdns,usb3.yaml#
+
+required:
+ - compatible
+ - cix,usb-rcsu
+ - clocks
+ - clock-names
+ - resets
+ - reset-names
+ - cix,usb-syscon
+ - "#address-cells"
+ - "#size-cells"
+ - ranges
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/cix,sky1.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/reset/cix,sky1-s5-system-control.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ rcsu: syscon@91c0300 {
+ compatible = "cix,sky1-usbss-rcsu", "syscon";
+ reg = <0x00 0x091c0300 0x00 0x200>;
+ };
+
+ usb-4 {
+ compatible = "cix,sky1-usbssp";
+ ranges;
+ #address-cells = <2>;
+
+ clocks = <&scmi_clk CLK_TREE_USB3A_H0_CLK_SOF>,
+ <&scmi_clk CLK_TREE_USB3A_0_AXI_GATE>,
+ <&scmi_clk CLK_TREE_USB3A_H0_CLK_LPM>,
+ <&scmi_clk CLK_TREE_USB3A_0_APB_GATE>;
+ clock-names = "sof", "axi", "lpm", "apb";
+ resets = <&src SKY1_USBC_SS2_PRST_N>,
+ <&src SKY1_USBC_SS2_RST_N>;
+ reset-names = "apb", "core";
+ #size-cells = <2>;
+ cix,usb-syscon = <&src>;
+ cix,usb-rcsu = <&rcsu 0x14 0x100>;
+
+ usb@91d0000 {
+ compatible = "cdns,usb3";
+ reg = <0x00 0x91d0000 0x00 0x4000>,
+ <0x00 0x91d8000 0x00 0x8000>,
+ <0x00 0x91d4000 0x00 0x4000>;
+ reg-names = "otg", "xhci", "dev";
+ dr_mode = "otg";
+
+ interrupts = <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "host", "peripheral", "otg", "wakeup";
+ maximum-speed = "super-speed-plus";
+
+ phys = <&usb3_phy4_0>, <&usb2_phy6>;
+ phy-names = "cdns3,usb3-phy", "cdns3,usb2-phy";
+ };
+ };
+ };@@ -2775,9 +2775,12 @@ S: Maintained
T: git git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/cix.git
F: Documentation/devicetree/bindings/arm/cix.yaml
F: Documentation/devicetree/bindings/mailbox/cix,sky1-mbox.yaml
+F: Documentation/devicetree/bindings/phy/cix,sky1-usb3-phy.yaml
F: Documentation/devicetree/bindings/usb/cix,sky1-usbss-rcsu.yaml
+F: Documentation/devicetree/bindings/usb/cix,sky1-usbssp.yaml
F: arch/arm64/boot/dts/cix/
F: drivers/mailbox/cix-mailbox.c
+F: drivers/phy/cix/
K: \bcix\b
ARM/CLKDEV SUPPORT