diff options
Diffstat (limited to 'Documentation/devicetree/bindings')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml | 3 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml | 121 |
2 files changed, 124 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml index b5ba5ffc36d6..fab29f95d8e6 100644 --- a/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml +++ b/Documentation/devicetree/bindings/arm/samsung/samsung-boards.yaml @@ -240,6 +240,9 @@ properties: items: - enum: - samsung,c1s # Samsung Galaxy Note20 5G (SM-N981B) + - samsung,r8s # Samsung Galaxy S20 FE (SM-G780F) + - samsung,x1s # Samsung Galaxy S20 5G (SM-G981B) + - samsung,x1slte # Samsung Galaxy S20 (SM-G980F) - const: samsung,exynos990 - description: Exynos Auto v9 based boards diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml new file mode 100644 index 000000000000..9e7944b5f13b --- /dev/null +++ b/Documentation/devicetree/bindings/clock/samsung,exynos990-clock.yaml @@ -0,0 +1,121 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/samsung,exynos990-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung Exynos990 SoC clock controller + +maintainers: + - Igor Belwon <igor.belwon@mentallysanemainliners.org> + - Chanwoo Choi <cw00.choi@samsung.com> + - Krzysztof Kozlowski <krzk@kernel.org> + +description: | + Exynos990 clock controller is comprised of several CMU units, generating + clocks for different domains. Those CMU units are modeled as separate device + tree nodes, and might depend on each other. The root clock in that root tree + is an external clock: OSCCLK (26 MHz). This external clock must be defined + as a fixed-rate clock in dts. + + CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and + dividers; all other clocks of function blocks (other CMUs) are usually + derived from CMU_TOP. + + Each clock is assigned an identifier and client nodes can use this identifier + to specify the clock which they consume. All clocks available for usage + in clock consumer nodes are defined as preprocessor macros in + 'include/dt-bindings/clock/samsung,exynos990.h' header. + +properties: + compatible: + enum: + - samsung,exynos990-cmu-hsi0 + - samsung,exynos990-cmu-top + + clocks: + minItems: 1 + maxItems: 5 + + clock-names: + minItems: 1 + maxItems: 5 + + "#clock-cells": + const: 1 + + reg: + maxItems: 1 + +required: + - compatible + - clocks + - clock-names + - "#clock-cells" + - reg + +allOf: + - if: + properties: + compatible: + contains: + const: samsung,exynos990-cmu-hsi0 + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + - description: CMU_HSI0 BUS clock (from CMU_TOP) + - description: CMU_HSI0 USB31DRD clock (from CMU_TOP) + - description: CMU_HSI0 USBDP_DEBUG clock (from CMU_TOP) + - description: CMU_HSI0 DPGTC clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: bus + - const: usb31drd + - const: usbdp_debug + - const: dpgtc + + - if: + properties: + compatible: + contains: + const: samsung,exynos990-cmu-top + + then: + properties: + clocks: + items: + - description: External reference clock (26 MHz) + + clock-names: + items: + - const: oscclk + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/samsung,exynos990.h> + + cmu_hsi0: clock-controller@10a00000 { + compatible = "samsung,exynos990-cmu-hsi0"; + reg = <0x10a00000 0x8000>; + #clock-cells = <1>; + + clocks = <&oscclk>, + <&cmu_top CLK_DOUT_CMU_HSI0_BUS>, + <&cmu_top CLK_DOUT_CMU_HSI0_USB31DRD>, + <&cmu_top CLK_DOUT_CMU_HSI0_USBDP_DEBUG>, + <&cmu_top CLK_DOUT_CMU_HSI0_DPGTC>; + clock-names = "oscclk", + "bus", + "usb31drd", + "usbdp_debug", + "dpgtc"; + }; + +... |