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| author | Charan Pedumuru <charan.pedumuru@gmail.com> | 2026-03-27 19:47:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-11 13:02:15 +0300 |
| commit | 73d4839a3a86f3329fda8cc2cda723f10b22eb92 (patch) | |
| tree | 8e1369a291ab3fa2e8e8ec1b8f6fd60a92bda817 /Documentation | |
| parent | 2b7f1a4f19f87f44f95a812b0f40f79a23950f99 (diff) | |
| download | linux-73d4839a3a86f3329fda8cc2cda723f10b22eb92.tar.xz | |
dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/usb/atmel-usb.txt | 27 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/usb/generic-ohci.yaml | 41 |
2 files changed, 41 insertions, 27 deletions
diff --git a/Documentation/devicetree/bindings/usb/atmel-usb.txt b/Documentation/devicetree/bindings/usb/atmel-usb.txt index 12183ef47ee4..c09685283109 100644 --- a/Documentation/devicetree/bindings/usb/atmel-usb.txt +++ b/Documentation/devicetree/bindings/usb/atmel-usb.txt @@ -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: diff --git a/Documentation/devicetree/bindings/usb/generic-ohci.yaml b/Documentation/devicetree/bindings/usb/generic-ohci.yaml index 961cbf85eeb5..d42f448fa204 100644 --- a/Documentation/devicetree/bindings/usb/generic-ohci.yaml +++ b/Documentation/devicetree/bindings/usb/generic-ohci.yaml @@ -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 @@ -145,6 +164,28 @@ 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: compatible: |