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Diffstat (limited to 'Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml')
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1 files changed, 126 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml new file mode 100644 index 000000000000..f83f0f8135b9 --- /dev/null +++ b/Documentation/devicetree/bindings/phy/samsung,usb3-drd-phy.yaml @@ -0,0 +1,126 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/samsung,usb3-drd-phy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung Exynos SoC USB 3.0 DRD PHY USB 2.0 PHY + +maintainers: + - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> + - Marek Szyprowski <m.szyprowski@samsung.com> + - Sylwester Nawrocki <s.nawrocki@samsung.com> + +description: | + For samsung,exynos5250-usbdrd-phy and samsung,exynos5420-usbdrd-phy + compatible PHYs, the second cell in the PHY specifier identifies the + PHY id, which is interpreted as follows:: + 0 - UTMI+ type phy, + 1 - PIPE3 type phy. + + For SoCs like Exynos5420 having multiple USB 3.0 DRD PHY controllers, + 'usbdrd_phy' nodes should have numbered alias in the aliases node, in the + form of usbdrdphyN, N = 0, 1... (depending on number of controllers). + +properties: + compatible: + enum: + - samsung,exynos5250-usbdrd-phy + - samsung,exynos5420-usbdrd-phy + - samsung,exynos5433-usbdrd-phy + - samsung,exynos7-usbdrd-phy + + clocks: + minItems: 2 + maxItems: 5 + + clock-names: + minItems: 2 + maxItems: 5 + description: | + At least two clocks:: + - Main PHY clock (same as USB DRD controller i.e. DWC3 IP clock), used + for register access. + - PHY reference clock (usually crystal clock), used for PHY operations, + associated by phy name. It is used to determine bit values for clock + settings register. For Exynos5420 this is given as 'sclk_usbphy30' + in the CMU. + + "#phy-cells": + const: 1 + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + Any connector to the data bus of this controller should be modelled using + the OF graph bindings specified. + + reg: + maxItems: 1 + + samsung,pmu-syscon: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to PMU system controller interface. + + vbus-supply: + description: + VBUS power source. + + vbus-boost-supply: + description: + VBUS Boost 5V power source. + +required: + - compatible + - clocks + - clock-names + - "#phy-cells" + - reg + - samsung,pmu-syscon + +allOf: + - if: + properties: + compatible: + contains: + enum: + - samsung,exynos5433-usbdrd-phy + - samsung,exynos7-usbdrd-phy + then: + properties: + clocks: + minItems: 5 + maxItems: 5 + clock-names: + items: + - const: phy + - const: ref + - const: phy_utmi + - const: phy_pipe + - const: itp + else: + properties: + clocks: + minItems: 2 + maxItems: 2 + clock-names: + items: + - const: phy + - const: ref + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/exynos5420.h> + + phy@12100000 { + compatible = "samsung,exynos5420-usbdrd-phy"; + reg = <0x12100000 0x100>; + #phy-cells = <1>; + clocks = <&clock CLK_USBD300>, <&clock CLK_SCLK_USBPHY300>; + clock-names = "phy", "ref"; + samsung,pmu-syscon = <&pmu_system_controller>; + vbus-supply = <&usb300_vbus_reg>; + }; |