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Message-Id: <20260201-atmel-usb-v1-4-d1a3e93003f1@gmail.com>
Date: Sun, 01 Feb 2026 11:34:23 +0000
From: Charan Pedumuru <charan.pedumuru@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Claudiu Beznea <claudiu.beznea@...on.dev>,
Herve Codina <herve.codina@...tlin.com>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Charan Pedumuru <charan.pedumuru@...il.com>
Subject: [PATCH 4/4] dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT
schema
Convert Atmel High-Speed USB Device Controller (USBA) binding to DT schema.
Changes during conversion:
- Include "#address-cells" and "#size-cells" in the properties since they
are required by existing in-tree DTS definitions.
Signed-off-by: Charan Pedumuru <charan.pedumuru@...il.com>
---
.../bindings/usb/atmel,at91sam9rl-udc.yaml | 81 +++++++++++++
.../devicetree/bindings/usb/atmel-usb.txt | 125 ---------------------
2 files changed, 81 insertions(+), 125 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/atmel,at91sam9rl-udc.yaml b/Documentation/devicetree/bindings/usb/atmel,at91sam9rl-udc.yaml
new file mode 100644
index 000000000000..6f5710cecaee
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/atmel,at91sam9rl-udc.yaml
@@ -0,0 +1,81 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/atmel,at91sam9rl-udc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel High-Speed USB Device Controller (USBA)
+
+maintainers:
+ - Nicolas Ferre <nicolas.ferre@...rochip.com>
+ - Alexandre Belloni <alexandre.belloni@...tlin.com>
+
+description:
+ The Atmel High-Speed USB Device Controller (USBA) provides USB 2.0
+ high-speed gadget functionality on several Atmel and Microchip SoCs.
+ The controller requires a peripheral clock and a host clock for operation
+ and may optionally use a GPIO to detect VBUS presence.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - atmel,at91sam9rl-udc
+ - atmel,at91sam9g45-udc
+ - atmel,sama5d3-udc
+ - items:
+ - const: microchip,lan9662-udc
+ - const: atmel,sama5d3-udc
+ - const: microchip,sam9x60-udc
+
+ reg:
+ maxItems: 2
+
+ interrupts:
+ maxItems: 1
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ clocks:
+ minItems: 2
+ maxItems: 2
+
+ clock-names:
+ minItems: 2
+ maxItems: 2
+ items:
+ enum: [pclk, hclk]
+
+ atmel,vbus-gpio:
+ description: GPIO used to detect the presence of VBUS, indicating that
+ the USB cable is connected.
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/clock/at91.h>
+ #include <dt-bindings/gpio/gpio.h>
+ gadget@...78000 {
+ compatible = "atmel,at91sam9g45-udc";
+ reg = <0x00600000 0x80000
+ 0xfff78000 0x400>;
+ interrupts = <27 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&pmc PMC_TYPE_PERIPHERAL 27>, <&pmc PMC_TYPE_CORE PMC_UTMI>;
+ clock-names = "pclk", "hclk";
+ atmel,vbus-gpio = <&pioC 15 GPIO_ACTIVE_HIGH>;
+ };
+...
diff --git a/Documentation/devicetree/bindings/usb/atmel-usb.txt b/Documentation/devicetree/bindings/usb/atmel-usb.txt
deleted file mode 100644
index 12183ef47ee4..000000000000
--- a/Documentation/devicetree/bindings/usb/atmel-usb.txt
+++ /dev/null
@@ -1,125 +0,0 @@
-Atmel SOC USB controllers
-
-OHCI
-
-Required properties:
- - compatible: Should be "atmel,at91rm9200-ohci" for USB controllers
- used in host mode.
- - reg: Address and length of the register set for the device
- - interrupts: Should contain ohci interrupt
- - clocks: Should reference the peripheral, host and system clocks
- - clock-names: Should contain three strings
- "ohci_clk" for the peripheral clock
- "hclk" for the host clock
- "uhpck" for the system clock
- - num-ports: Number of ports.
- - atmel,vbus-gpio: If present, specifies a gpio that needs to be
- activated for the bus to be powered.
- - atmel,oc-gpio: If present, specifies a gpio that needs to be
- activated for the overcurrent detection.
-
-usb0: ohci@...000 {
- compatible = "atmel,at91rm9200-ohci", "usb-ohci";
- reg = <0x00500000 0x100000>;
- clocks = <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
- clock-names = "ohci_clk", "hclk", "uhpck";
- interrupts = <20 4>;
- num-ports = <2>;
-};
-
-EHCI
-
-Required properties:
- - compatible: Should be "atmel,at91sam9g45-ehci" for USB controllers
- used in host mode.
- - reg: Address and length of the register set for the device
- - interrupts: Should contain ehci interrupt
- - clocks: Should reference the peripheral and the UTMI clocks
- - clock-names: Should contain two strings
- "ehci_clk" for the peripheral clock
- "usb_clk" for the UTMI clock
-
-Optional properties:
- - phy_type : For multi port host USB controllers, should be one of
- "utmi", or "hsic".
-
-usb1: ehci@...000 {
- compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
- reg = <0x00800000 0x100000>;
- interrupts = <22 4>;
- clocks = <&utmi>, <&uhphs_clk>;
- clock-names = "usb_clk", "ehci_clk";
-};
-
-AT91 USB device controller
-
-Required properties:
- - compatible: Should be one of the following
- "atmel,at91rm9200-udc"
- "atmel,at91sam9260-udc"
- "atmel,at91sam9261-udc"
- "atmel,at91sam9263-udc"
- - reg: Address and length of the register set for the device
- - interrupts: Should contain macb interrupt
- - clocks: Should reference the peripheral and the AHB clocks
- - clock-names: Should contain two strings
- "pclk" for the peripheral clock
- "hclk" for the AHB clock
-
-Optional properties:
- - atmel,vbus-gpio: If present, specifies a gpio that needs to be
- activated for the bus to be powered.
-
-usb1: gadget@...a4000 {
- compatible = "atmel,at91rm9200-udc";
- reg = <0xfffa4000 0x4000>;
- interrupts = <10 4>;
- clocks = <&udc_clk>, <&udpck>;
- clock-names = "pclk", "hclk";
- atmel,vbus-gpio = <&pioC 5 0>;
-};
-
-Atmel High-Speed USB device controller
-
-Required properties:
- - compatible: Should be one of the following
- "atmel,at91sam9rl-udc"
- "atmel,at91sam9g45-udc"
- "atmel,sama5d3-udc"
- "microchip,sam9x60-udc"
- "microchip,lan9662-udc"
- For "microchip,lan9662-udc" the fallback "atmel,sama5d3-udc"
- is required.
- - reg: Address and length of the register set for the device
- - interrupts: Should contain usba interrupt
- - clocks: Should reference the peripheral and host clocks
- - clock-names: Should contain two strings
- "pclk" for the peripheral clock
- "hclk" for the host clock
-
-Deprecated property:
- - ep childnode: To specify the number of endpoints and their properties.
-
-Optional properties:
- - atmel,vbus-gpio: If present, specifies a gpio that allows to detect whether
- vbus is present (USB is connected).
-
-Deprecated child node properties:
- - name: Name of the endpoint.
- - reg: Num of the endpoint.
- - atmel,fifo-size: Size of the fifo.
- - atmel,nb-banks: Number of banks.
- - atmel,can-dma: Boolean to specify if the endpoint support DMA.
- - atmel,can-isoc: Boolean to specify if the endpoint support ISOC.
-
-usb2: gadget@...78000 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "atmel,at91sam9rl-udc";
- reg = <0x00600000 0x80000
- 0xfff78000 0x400>;
- interrupts = <27 4 0>;
- clocks = <&utmi>, <&udphs_clk>;
- clock-names = "hclk", "pclk";
- atmel,vbus-gpio = <&pioB 19 0>;
-};
--
2.52.0
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