Add bindings for the TI's AM62 wrapper module for the Synopsys USBSS-DRD
controller.
Signed-off-by: Aswath Govindraju <[email protected]>
---
changes since v2:
- Removed the implementation of detecting the role from the wrapper
driver and moved the implementation to using linux,extcon-usb-gpio
driver for role detection.
- Updated the binding documentation and example to reflect the same.
.../devicetree/bindings/usb/ti,am62-usb.yaml | 115 ++++++++++++++++++
1 file changed, 115 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/ti,am62-usb.yaml
diff --git a/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml b/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml
new file mode 100644
index 000000000000..59b5ccea5671
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/ti,am62-usb.yaml
@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/ti,am62-usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI's AM62 wrapper module for the Synopsys USBSS-DRD controller
+
+maintainers:
+ - Aswath Govindraju <[email protected]>
+
+properties:
+ compatible:
+ const: ti,am62-usb
+
+ reg:
+ maxItems: 1
+
+ ranges: true
+
+ power-domains:
+ description:
+ PM domain provider node and an args specifier containing
+ the USB ISO device id value. See,
+ Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
+ maxItems: 1
+
+ clocks:
+ description: Clock phandle to usb2_refclk
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: ref
+
+ interrupts:
+ description:
+ interrupt line to be used for detecting changes in VBUS
+ maxItems: 1
+
+ ti,vbus-divider:
+ description:
+ Should be present if USB VBUS line is connected to the
+ VBUS pin of the SoC via a 1/3 voltage divider.
+ type: boolean
+
+ ti,syscon-phy-pll-refclk:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ items:
+ - items:
+ - description: Phandle to the SYSCON entry
+ - description: USB phy control register offset within SYSCON
+ description:
+ Specifier for conveying frequency of ref clock input, for the
+ operation of USB2PHY.
+
+ '#address-cells':
+ const: 2
+
+ '#size-cells':
+ const: 2
+
+patternProperties:
+ "^usb@[0-9a-f]+$":
+ $ref: snps,dwc3.yaml#
+ description: Required child node
+
+required:
+ - compatible
+ - reg
+ - power-domains
+ - clocks
+ - clock-names
+ - interrupts
+ - ti,syscon-phy-pll-refclk
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/soc/ti,sci_pm_domain.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ extcon_usb1: extcon-usb1 {
+ id-gpios = <&main_gpio1 51 GPIO_ACTIVE_HIGH>;
+ };
+
+ bus {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ usbss1: usb@f910000 {
+ compatible = "ti,am62-usb";
+ reg = <0x00 0x0f910000 0x00 0x800>;
+ interrupts = <GIC_SPI 234 IRQ_TYPE_LEVEL_HIGH>; /* MISC IRQ */
+ clocks = <&k3_clks 162 3>;
+ clock-names = "ref";
+ ti,syscon-phy-pll-refclk = <&wkup_conf 0x4018>;
+ power-domains = <&k3_pds 179 TI_SCI_PD_EXCLUSIVE>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ usb@31100000 {
+ compatible = "snps,dwc3";
+ reg =<0x00 0x31100000 0x00 0x50000>;
+ interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>, /* irq.0 */
+ <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>; /* irq.0 */
+ interrupt-names = "host", "peripheral";
+ maximum-speed = "high-speed";
+ extcon = <&extcon_usb1>;
+ dr_mode = "otg";
+ };
+ };
+ };
--
2.17.1
On 06/04/2022 15:52, Aswath Govindraju wrote:
> Add bindings for the TI's AM62 wrapper module for the Synopsys USBSS-DRD
> controller.
>
> Signed-off-by: Aswath Govindraju <[email protected]>
> ---
>
> changes since v2:
> - Removed the implementation of detecting the role from the wrapper
> driver and moved the implementation to using linux,extcon-usb-gpio
> driver for role detection.
> - Updated the binding documentation and example to reflect the same.
>
> .../devicetree/bindings/usb/ti,am62-usb.yaml | 115 ++++++++++++++++++
> 1 file changed, 115 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/usb/ti,am62-usb.yaml
>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Best regards,
Krzysztof
On 06/04/2022 16:52, Aswath Govindraju wrote:
> Add bindings for the TI's AM62 wrapper module for the Synopsys USBSS-DRD
> controller.
>
> Signed-off-by: Aswath Govindraju <[email protected]>
> ---
Reviewed-by: Roger Quadros <[email protected]>
--
cheers,
-roger