[PW_SID:954863] Add USB2.0 PHY and USB3.0 PHY support for SpacemiT K1

Documentation/devicetree/bindings/phy/spacemit,k1-combphy.yaml

@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/spacemit,k1-combphy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SpacemiT K1 PCIe/USB3 Combo PHY
+
+maintainers:
+  - Ze Huang <huangze@whut.edu.cn>
+
+description:
+  Combo PHY on SpacemiT K1 SoC. PCIe port A and USB3 controller share this
+  phy, only one of PCIe port A and USB3 port can work at any given application
+  scenario.
+
+properties:
+  compatible:
+    const: spacemit,k1-combphy
+
+  reg:
+    items:
+      - description: PHY control registers
+      - description: PCIe/USB3 mode selection register
+
+  reg-names:
+    items:
+      - const: ctrl
+      - const: sel
+
+  resets:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 1
+    description:
+      Indicates the PHY mode to select. The value determines whether the PHY
+      operates in PCIe or USB3 mode.
+
+  spacemit,lfps-threshold:
+    description:
+      Controls the LFPS signal detection threshold, affects polling.LFPS
+      handshake. Lower the threshold when core voltage rises.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 0xff
+
+  spacemit,rx-always-on:
+    description:
+      Affects RX.detect, enhance compatibility of some DFPs in device mode but
+      increase power consumption.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - resets
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    phy@c0b10000 {
+        compatible = "spacemit,k1-combphy";
+        reg = <0xc0b10000 0x800>,
+              <0xd4282910 0x400>;
+        reg-names = "ctrl", "sel";
+        resets = <&syscon_apmu 19>;
+        #phy-cells = <1>;
+    };

Documentation/devicetree/bindings/phy/spacemit,usb2-phy.yaml

@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/spacemit,usb2-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SpacemiT K1 SoC USB 2.0 PHY
+
+maintainers:
+  - Ze Huang <huangze@whut.edu.cn>
+
+properties:
+  compatible:
+    const: spacemit,k1-usb2-phy
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    usb-phy@c09c0000 {
+        compatible = "spacemit,k1-usb2-phy";
+        reg = <0xc09c0000 0x200>;
+        clocks = <&syscon_apmu 15>;
+        #phy-cells = <0>;
+    };

drivers/phy/Kconfig

@@ -114,6 +114,7 @@ source "drivers/phy/renesas/Kconfig"
 source "drivers/phy/rockchip/Kconfig"
 source "drivers/phy/samsung/Kconfig"
 source "drivers/phy/socionext/Kconfig"
+source "drivers/phy/spacemit/Kconfig"
 source "drivers/phy/st/Kconfig"
 source "drivers/phy/starfive/Kconfig"
 source "drivers/phy/sunplus/Kconfig"

drivers/phy/Makefile

@@ -34,6 +34,7 @@ obj-y					+= allwinner/	\
 					   rockchip/	\
 					   samsung/	\
 					   socionext/	\
+					   spacemit/	\
 					   st/		\
 					   starfive/	\
 					   sunplus/	\

drivers/phy/spacemit/Kconfig

@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Phy drivers for SpacemiT platforms
+#
+config PHY_SPACEMIT_K1_USB2
+	tristate "SpacemiT K1 USB 2.0 PHY support"
+	depends on (ARCH_SPACEMIT || COMPILE_TEST) && OF
+	depends on COMMON_CLK
+	depends on USB_COMMON
+	select GENERIC_PHY
+	help
+	  Enable this to support K1 USB 2.0 PHY driver. This driver takes care of
+	  enabling and clock setup and will be used by K1 udc/ehci/otg/xhci driver.
+
+config PHY_SPACEMIT_K1_COMBPHY
+	tristate "SpacemiT K1 PCIe/USB3 combo PHY support"
+	depends on (ARCH_SPACEMIT || COMPILE_TEST) && OF
+	depends on COMMON_CLK
+	select GENERIC_PHY
+	help
+	  USB3/PCIe Combo PHY Support for SpacemiT K1 SoC

drivers/phy/spacemit/Makefile

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_PHY_SPACEMIT_K1_COMBPHY)	+= phy-k1-combphy.o
+obj-$(CONFIG_PHY_SPACEMIT_K1_USB2)		+= phy-k1-usb2.o