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dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support

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Convert the Atmel AT91RM9200 OHCI USB host controller binding to DT schema
by defining it in the existing generic OHCI schema.

Signed-off-by: Charan Pedumuru <charan.pedumuru@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260327-atmel-usb-v4-2-eb8b6e49b29d@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Charan Pedumuru 2026-03-27 16:47:43 +00:00 committed by Greg Kroah-Hartman
parent 2b7f1a4f19
commit 73d4839a3a
2 changed files with 41 additions and 27 deletions
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27
Documentation/devicetree/bindings/usb/atmel-usb.txt
View File

@ -1,32 +1,5 @@
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@500000 {
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:

41
Documentation/devicetree/bindings/usb/generic-ohci.yaml
View File

@ -55,6 +55,7 @@ properties:
- ti,ohci-omap3
- items:
- enum:
- atmel,at91rm9200-ohci
- cavium,octeon-6335-ohci
- nintendo,hollywood-usb-ohci
- nxp,ohci-nxp
@ -137,6 +138,24 @@ properties:
The associated ISP1301 device. Necessary for the UDC controller for
connecting to the USB physical layer.
atmel,vbus-gpio:
description:
GPIO used to control or sense the USB VBUS power. Each entry
represents a VBUS-related GPIO; count and order may vary by hardware.
Entries follow standard GPIO specifier format. A value of 0 indicates
an unused or unavailable VBUS signal.
minItems: 1
maxItems: 3
atmel,oc-gpio:
description:
GPIO used to signal USB overcurrent condition. Each entry represents
an OC detection GPIO; count and order may vary by hardware. Entries
follow standard GPIO specifier format. A value of 0 indicates an
unused or unavailable OC signal.
minItems: 1
maxItems: 3
required:
- compatible
- reg
@ -144,6 +163,28 @@ required:
allOf:
- $ref: usb-hcd.yaml
- if:
properties:
compatible:
contains:
const: atmel,at91rm9200-ohci
then:
properties:
clock-names:
items:
- const: ohci_clk
- const: hclk
- const: uhpck
required:
- clocks
- clock-names
else:
properties:
atmel,vbus-gpio: false
atmel,oc-gpio: false
- if:
not:
properties: