[PATCH V2 4/6] dt-bindings: usb: ci-hdrc-usb2: convert to DT schema format

From: Peng Fan (OSS)
Date: Fri Oct 14 2022 - 05:51:19 EST

From: Peng Fan <peng.fan@xxxxxxx>

Convert the binding to DT schema format

Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
---
.../devicetree/bindings/usb/ci-hdrc-usb2.txt | 158 --------
.../devicetree/bindings/usb/ci-hdrc-usb2.yaml | 341 ++++++++++++++++++
2 files changed, 341 insertions(+), 158 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
create mode 100644 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml

diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
deleted file mode 100644
index ba51fb1252b9..000000000000
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ /dev/null
@@ -1,158 +0,0 @@
-* USB2 ChipIdea USB controller for ci13xxx
-
-Required properties:
-- compatible: should be one of:
- "fsl,imx23-usb"
- "fsl,imx27-usb"
- "fsl,imx28-usb"
- "fsl,imx6q-usb"
- "fsl,imx6sl-usb"
- "fsl,imx6sx-usb"
- "fsl,imx6ul-usb"
- "fsl,imx7d-usb"
- "fsl,imx7ulp-usb"
- "lsi,zevio-usb"
- "qcom,ci-hdrc"
- "chipidea,usb2"
- "xlnx,zynq-usb-2.20a"
- "nvidia,tegra20-udc"
- "nvidia,tegra30-udc"
- "nvidia,tegra114-udc"
- "nvidia,tegra124-udc"
-- reg: base address and length of the registers
-- interrupts: interrupt for the USB controller
-
-Recommended properies:
-- phy_type: the type of the phy connected to the core. Should be one
- of "utmi", "utmi_wide", "ulpi", "serial" or "hsic". Without this
- property the PORTSC register won't be touched.
-- dr_mode: One of "host", "peripheral" or "otg". Defaults to "otg"
-
-Deprecated properties:
-- usb-phy: phandle for the PHY device. Use "phys" instead.
-- fsl,usbphy: phandle of usb phy that connects to the port. Use "phys" instead.
-
-Optional properties:
-- clocks: reference to the USB clock
-- phys: reference to the USB PHY
-- phy-names: should be "usb-phy"
-- vbus-supply: reference to the VBUS regulator
-- maximum-speed: limit the maximum connection speed to "full-speed".
-- tpl-support: TPL (Targeted Peripheral List) feature for targeted hosts
-- itc-setting: interrupt threshold control register control, the setting
- should be aligned with ITC bits at register USBCMD.
-- ahb-burst-config: it is vendor dependent, the required value should be
- aligned with AHBBRST at SBUSCFG, the range is from 0x0 to 0x7. This
- property is used to change AHB burst configuration, check the chipidea
- spec for meaning of each value. If this property is not existed, it
- will use the reset value.
-- tx-burst-size-dword: it is vendor dependent, the tx burst size in dword
- (4 bytes), This register represents the maximum length of a the burst
- in 32-bit words while moving data from system memory to the USB
- bus, the value of this property will only take effect if property
- "ahb-burst-config" is set to 0, if this property is missing the reset
- default of the hardware implementation will be used.
-- rx-burst-size-dword: it is vendor dependent, the rx burst size in dword
- (4 bytes), This register represents the maximum length of a the burst
- in 32-bit words while moving data from the USB bus to system memory,
- the value of this property will only take effect if property
- "ahb-burst-config" is set to 0, if this property is missing the reset
- default of the hardware implementation will be used.
-- extcon: phandles to external connector devices. First phandle should point to
- external connector, which provide "USB" cable events, the second should point
- to external connector device, which provide "USB-HOST" cable events. If one
- of the external connector devices is not required, empty <0> phandle should
- be specified.
-- phy-clkgate-delay-us: the delay time (us) between putting the PHY into
- low power mode and gating the PHY clock.
-- non-zero-ttctrl-ttha: after setting this property, the value of register
- ttctrl.ttha will be 0x7f; if not, the value will be 0x0, this is the default
- value. It needs to be very carefully for setting this property, it is
- recommended that consult with your IC engineer before setting this value.
- On the most of chipidea platforms, the "usage_tt" flag at RTL is 0, so this
- property only affects siTD.
- If this property is not set, the max packet size is 1023 bytes, and if
- the total of packet size for pervious transactions are more than 256 bytes,
- it can't accept any transactions within this frame. The use case is single
- transaction, but higher frame rate.
- If this property is set, the max packet size is 188 bytes, it can handle
- more transactions than above case, it can accept transactions until it
- considers the left room size within frame is less than 188 bytes, software
- needs to make sure it does not send more than 90%
- maximum_periodic_data_per_frame. The use case is multiple transactions, but
- less frame rate.
-- mux-controls: The mux control for toggling host/device output of this
- controller. It's expected that a mux state of 0 indicates device mode and a
- mux state of 1 indicates host mode.
-- mux-control-names: Shall be "usb_switch" if mux-controls is specified.
-- pinctrl-names: Names for optional pin modes in "default", "host", "device".
- In case of HSIC-mode, "idle" and "active" pin modes are mandatory. In this
- case, the "idle" state needs to pull down the data and strobe pin
- and the "active" state needs to pull up the strobe pin.
-- pinctrl-n: alternate pin modes
-
-i.mx specific properties
-- fsl,usbmisc: phandler of non-core register device, with one
- argument that indicate usb controller index
-- disable-over-current: disable over current detect
-- over-current-active-low: over current signal polarity is active low.
-- over-current-active-high: over current signal polarity is active high.
- It's recommended to specify the over current polarity.
-- power-active-high: power signal polarity is active high
-- external-vbus-divider: enables off-chip resistor divider for Vbus
-- samsung,picophy-pre-emp-curr-control: HS Transmitter Pre-Emphasis Current
- Control. This signal controls the amount of current sourced to the
- USB_OTG*_DP and USB_OTG*_DN pins after a J-to-K or K-to-J transition.
- The range is from 0x0 to 0x3, the default value is 0x1.
- Details can refer to TXPREEMPAMPTUNE0 bits of USBNC_n_PHY_CFG1.
-- samsung,picophy-dc-vol-level-adjust: HS DC Voltage Level Adjustment.
- Adjust the high-speed transmitter DC level voltage.
- The range is from 0x0 to 0xf, the default value is 0x3.
- Details can refer to TXVREFTUNE0 bits of USBNC_n_PHY_CFG1.
-
-Example:
-
- usb@f7ed0000 {
- compatible = "chipidea,usb2";
- reg = <0xf7ed0000 0x10000>;
- interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&chip CLKID_USB0>;
- phys = <&usb_phy0>;
- phy-names = "usb-phy";
- vbus-supply = <&reg_usb0_vbus>;
- itc-setting = <0x4>; /* 4 micro-frames */
- /* Incremental burst of unspecified length */
- ahb-burst-config = <0x0>;
- tx-burst-size-dword = <0x10>; /* 64 bytes */
- rx-burst-size-dword = <0x10>;
- extcon = <0>, <&usb_id>;
- phy-clkgate-delay-us = <400>;
- mux-controls = <&usb_switch>;
- mux-control-names = "usb_switch";
- };
-
-Example for HSIC:
-
- usb@2184400 {
- compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
- reg = <0x02184400 0x200>;
- interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clks IMX6QDL_CLK_USBOH3>;
- fsl,usbphy = <&usbphynop1>;
- fsl,usbmisc = <&usbmisc 2>;
- phy_type = "hsic";
- dr_mode = "host";
- ahb-burst-config = <0x0>;
- tx-burst-size-dword = <0x10>;
- rx-burst-size-dword = <0x10>;
- pinctrl-names = "idle", "active";
- pinctrl-0 = <&pinctrl_usbh2_idle>;
- pinctrl-1 = <&pinctrl_usbh2_active>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- usbnet: ethernet@1 {
- compatible = "usb424,9730";
- reg = <1>;
- };
- };
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
new file mode 100644
index 000000000000..ed03649f17a6
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
@@ -0,0 +1,341 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/ci-hdrc-usb2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: USB2 ChipIdea USB controller for ci13xxx Binding
+
+maintainers:
+ - Xu Yang <xu.yang_2@xxxxxxx>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - chipidea,usb2
+ - lsi,zevio-usb
+ - nvidia,tegra20-udc
+ - nvidia,tegra30-udc
+ - nvidia,tegra114-udc
+ - nvidia,tegra124-udc
+ - qcom,ci-hdrc
+ - items:
+ - enum:
+ - fsl,imx23-usb
+ - fsl,imx25-usb
+ - fsl,imx28-usb
+ - fsl,imx6q-usb
+ - fsl,imx6sl-usb
+ - fsl,imx6sx-usb
+ - fsl,imx6ul-usb
+ - fsl,imx7d-usb
+ - const: fsl,imx27-usb
+ - items:
+ - const: fsl,imx7ulp-usb
+ - const: fsl,imx6ul-usb
+ - items:
+ - const: xlnx,zynq-usb-2.20a
+ - const: chipidea,usb2
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ dr_mode: true
+
+ phy_type: true
+
+ itc-setting:
+ description:
+ interrupt threshold control register control, the setting should be
+ aligned with ITC bits at register USBCMD.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ ahb-burst-config:
+ description:
+ it is vendor dependent, the required value should be aligned with
+ AHBBRST at SBUSCFG, the range is from 0x0 to 0x7. This property is
+ used to change AHB burst configuration, check the chipidea spec for
+ meaning of each value. If this property is not existed, it will use
+ the reset value.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x7
+
+ tx-burst-size-dword:
+ description:
+ it is vendor dependent, the tx burst size in dword (4 bytes), This
+ register represents the maximum length of a the burst in 32-bit
+ words while moving data from system memory to the USB bus, the value
+ of this property will only take effect if property "ahb-burst-config"
+ is set to 0, if this property is missing the reset default of the
+ hardware implementation will be used.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ rx-burst-size-dword:
+ description:
+ it is vendor dependent, the rx burst size in dword (4 bytes), This
+ register represents the maximum length of a the burst in 32-bit words
+ while moving data from the USB bus to system memory, the value of
+ this property will only take effect if property "ahb-burst-config"
+ is set to 0, if this property is missing the reset default of the
+ hardware implementation will be used.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ extcon:
+ description: |
+ Phandles to external connector devices. First phandle should point
+ to external connector, which provide "USB" cable events, the second
+ should point to external connector device, which provide "USB-HOST"
+ cable events. If one of the external connector devices is not
+ required, empty <0> phandle should be specified.
+
+ phy-clkgate-delay-us:
+ description: |
+ The delay time (us) between putting the PHY into low power mode and
+ gating the PHY clock.
+
+ non-zero-ttctrl-ttha:
+ description: |
+ After setting this property, the value of register ttctrl.ttha
+ will be 0x7f; if not, the value will be 0x0, this is the default
+ value. It needs to be very carefully for setting this property, it
+ is recommended that consult with your IC engineer before setting
+ this value. On the most of chipidea platforms, the "usage_tt" flag
+ at RTL is 0, so this property only affects siTD.
+
+ If this property is not set, the max packet size is 1023 bytes, and
+ if the total of packet size for pervious transactions are more than
+ 256 bytes, it can't accept any transactions within this frame. The
+ use case is single transaction, but higher frame rate.
+
+ If this property is set, the max packet size is 188 bytes, it can
+ handle more transactions than above case, it can accept transactions
+ until it considers the left room size within frame is less than 188
+ bytes, software needs to make sure it does not send more than 90%
+ maximum_periodic_data_per_frame. The use case is multiple
+ transactions, but less frame rate.
+
+ mux-controls:
+ description: |
+ The mux control for toggling host/device output of this controller.
+ It's expected that a mux state of 0 indicates device mode and a mux
+ state of 1 indicates host mode.
+
+ mux-control-names:
+ const: usb_switch
+
+ pinctrl-names:
+ description: |
+ Names for optional pin modes in "default", "host", "device".
+ In case of HSIC-mode, "idle" and "active" pin modes are mandatory.
+ In this case, the "idle" state needs to pull down the data and
+ strobe pin and the "active" state needs to pull up the strobe pin.
+
+ pinctrl-0:
+ maxItems: 1
+
+ pinctrl-1:
+ maxItems: 1
+
+ phys:
+ maxItems: 1
+
+ phy-names:
+ const: usb-phy
+
+ vbus-supply:
+ description: reference to the VBUS regulator.
+
+ fsl,usbmisc:
+ description:
+ Phandler of non-core register device, with one argument that
+ indicate usb controller index
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+
+ disable-over-current:
+ description: disable over current detect
+
+ over-current-active-low:
+ description: over current signal polarity is active low
+
+ over-current-active-high:
+ description: |
+ Over current signal polarity is active high. It's recommended to
+ specify the over current polarity.
+
+ power-active-high:
+ description: power signal polarity is active high
+
+ external-vbus-divider:
+ description: enables off-chip resistor divider for Vbus
+
+ samsung,picophy-pre-emp-curr-control:
+ description: |
+ HS Transmitter Pre-Emphasis Current Control. This signal controls
+ the amount of current sourced to the USB_OTG*_DP and USB_OTG*_DN
+ pins after a J-to-K or K-to-J transition. The range is from 0x0 to
+ 0x3, the default value is 0x1. Details can refer to TXPREEMPAMPTUNE0
+ bits of USBNC_n_PHY_CFG1.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0x3
+
+ samsung,picophy-dc-vol-level-adjust:
+ description: |
+ HS DC Voltage Level Adjustment. Adjust the high-speed transmitter DC
+ level voltage. The range is from 0x0 to 0xf, the default value is
+ 0x3. Details can refer to TXVREFTUNE0 bits of USBNC_n_PHY_CFG1.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0x0
+ maximum: 0xf
+
+ usb-phy:
+ description: phandle for the PHY device. Use "phys" instead.
+ $ref: /schemas/types.yaml#/definitions/phandle
+ deprecated: true
+
+ fsl,usbphy:
+ description: phandle of usb phy that connects to the port. Use "phys" instead.
+ $ref: /schemas/types.yaml#/definitions/phandle
+ deprecated: true
+
+patternProperties:
+ "ethernet@[0-9a-f]$":
+ description: The hard wired USB devices
+ type: object
+ $ref: /schemas/net/microchip,lan95xx.yaml
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+allOf:
+ - $ref: usb-hcd.yaml#
+ - $ref: usb-drd.yaml#
+ - if:
+ properties:
+ mux-controls:
+ true
+ then:
+ properties:
+ mux-control-names:
+ const: usb_switch
+ - if:
+ properties:
+ phy_type:
+ const: hsic
+
+ required:
+ - phy_type
+ then:
+ properties:
+ pinctrl-names:
+ items:
+ - const: idle
+ - const: active
+ else:
+ properties:
+ pinctrl-names:
+ oneOf:
+ - items:
+ - const: default
+ - enum:
+ - host
+ - device
+ - items:
+ - const: default
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - chipidea,usb2
+ - lsi,zevio-usb
+ - nvidia,tegra20-udc
+ - nvidia,tegra30-udc
+ - nvidia,tegra114-udc
+ - nvidia,tegra124-udc
+ - qcom,ci-hdrc
+ - xlnx,zynq-usb-2.20a
+ then:
+ properties:
+ fsl,usbmisc: false
+ disable-over-current: false
+ over-current-active-low: false
+ over-current-active-high: false
+ power-active-high: false
+ external-vbus-divider: false
+ samsung,picophy-pre-emp-curr-control: false
+ samsung,picophy-dc-vol-level-adjust: false
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/berlin2.h>
+
+ usb@f7ed0000 {
+ compatible = "chipidea,usb2";
+ reg = <0xf7ed0000 0x10000>;
+ interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&chip CLKID_USB0>;
+ phys = <&usb_phy0>;
+ phy-names = "usb-phy";
+ vbus-supply = <&reg_usb0_vbus>;
+ itc-setting = <0x4>; /* 4 micro-frames */
+ /* Incremental burst of unspecified length */
+ ahb-burst-config = <0x0>;
+ tx-burst-size-dword = <0x10>; /* 64 bytes */
+ rx-burst-size-dword = <0x10>;
+ extcon = <0>, <&usb_id>;
+ phy-clkgate-delay-us = <400>;
+ mux-controls = <&usb_switch>;
+ mux-control-names = "usb_switch";
+ };
+
+ # Example for HSIC:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/imx6qdl-clock.h>
+
+ usb@2184400 {
+ compatible = "fsl,imx6q-usb", "fsl,imx27-usb";
+ reg = <0x02184400 0x200>;
+ interrupts = <0 41 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks IMX6QDL_CLK_USBOH3>;
+ fsl,usbphy = <&usbphynop1>;
+ fsl,usbmisc = <&usbmisc 2>;
+ phy_type = "hsic";
+ dr_mode = "host";
+ ahb-burst-config = <0x0>;
+ tx-burst-size-dword = <0x10>;
+ rx-burst-size-dword = <0x10>;
+ pinctrl-names = "idle", "active";
+ pinctrl-0 = <&pinctrl_usbh2_idle>;
+ pinctrl-1 = <&pinctrl_usbh2_active>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ usbnet: ethernet@1 {
+ compatible = "usb424,9730";
+ reg = <1>;
+ };
+ };
+
+...
--
2.37.1