15d6298f2SSam Protsenko# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 25d6298f2SSam Protsenko%YAML 1.2 35d6298f2SSam Protsenko--- 45d6298f2SSam Protsenko$id: http://devicetree.org/schemas/clock/samsung,exynos850-clock.yaml# 55d6298f2SSam Protsenko$schema: http://devicetree.org/meta-schemas/core.yaml# 65d6298f2SSam Protsenko 75d6298f2SSam Protsenkotitle: Samsung Exynos850 SoC clock controller 85d6298f2SSam Protsenko 95d6298f2SSam Protsenkomaintainers: 105d6298f2SSam Protsenko - Sam Protsenko <semen.protsenko@linaro.org> 115d6298f2SSam Protsenko - Chanwoo Choi <cw00.choi@samsung.com> 128a1e6bb3SKrzysztof Kozlowski - Krzysztof Kozlowski <krzk@kernel.org> 135d6298f2SSam Protsenko - Sylwester Nawrocki <s.nawrocki@samsung.com> 145d6298f2SSam Protsenko - Tomasz Figa <tomasz.figa@gmail.com> 155d6298f2SSam Protsenko 165d6298f2SSam Protsenkodescription: | 175d6298f2SSam Protsenko Exynos850 clock controller is comprised of several CMU units, generating 185d6298f2SSam Protsenko clocks for different domains. Those CMU units are modeled as separate device 195d6298f2SSam Protsenko tree nodes, and might depend on each other. Root clocks in that clock tree are 205d6298f2SSam Protsenko two external clocks:: OSCCLK (26 MHz) and RTCCLK (32768 Hz). Those external 215d6298f2SSam Protsenko clocks must be defined as fixed-rate clocks in dts. 225d6298f2SSam Protsenko 235d6298f2SSam Protsenko CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and 245d6298f2SSam Protsenko dividers; all other leaf clocks (other CMUs) are usually derived from CMU_TOP. 255d6298f2SSam Protsenko 265d6298f2SSam Protsenko Each clock is assigned an identifier and client nodes can use this identifier 275d6298f2SSam Protsenko to specify the clock which they consume. All clocks available for usage 285d6298f2SSam Protsenko in clock consumer nodes are defined as preprocessor macros in 295d6298f2SSam Protsenko 'dt-bindings/clock/exynos850.h' header. 305d6298f2SSam Protsenko 315d6298f2SSam Protsenkoproperties: 325d6298f2SSam Protsenko compatible: 335d6298f2SSam Protsenko enum: 345d6298f2SSam Protsenko - samsung,exynos850-cmu-top 3516e0c247SSam Protsenko - samsung,exynos850-cmu-apm 3645bbf4d7SSam Protsenko - samsung,exynos850-cmu-aud 37c2afeb79SSam Protsenko - samsung,exynos850-cmu-cmgp 385d6298f2SSam Protsenko - samsung,exynos850-cmu-core 395d6298f2SSam Protsenko - samsung,exynos850-cmu-dpu 405d6298f2SSam Protsenko - samsung,exynos850-cmu-hsi 41*f20f35f4SSam Protsenko - samsung,exynos850-cmu-is 425d6298f2SSam Protsenko - samsung,exynos850-cmu-peri 435d6298f2SSam Protsenko 445d6298f2SSam Protsenko clocks: 455d6298f2SSam Protsenko minItems: 1 465d6298f2SSam Protsenko maxItems: 5 475d6298f2SSam Protsenko 485d6298f2SSam Protsenko clock-names: 495d6298f2SSam Protsenko minItems: 1 505d6298f2SSam Protsenko maxItems: 5 515d6298f2SSam Protsenko 525d6298f2SSam Protsenko "#clock-cells": 535d6298f2SSam Protsenko const: 1 545d6298f2SSam Protsenko 555d6298f2SSam Protsenko reg: 565d6298f2SSam Protsenko maxItems: 1 575d6298f2SSam Protsenko 585d6298f2SSam ProtsenkoallOf: 595d6298f2SSam Protsenko - if: 605d6298f2SSam Protsenko properties: 615d6298f2SSam Protsenko compatible: 625d6298f2SSam Protsenko contains: 635d6298f2SSam Protsenko const: samsung,exynos850-cmu-top 645d6298f2SSam Protsenko 655d6298f2SSam Protsenko then: 665d6298f2SSam Protsenko properties: 675d6298f2SSam Protsenko clocks: 685d6298f2SSam Protsenko items: 695d6298f2SSam Protsenko - description: External reference clock (26 MHz) 705d6298f2SSam Protsenko 715d6298f2SSam Protsenko clock-names: 725d6298f2SSam Protsenko items: 735d6298f2SSam Protsenko - const: oscclk 745d6298f2SSam Protsenko 755d6298f2SSam Protsenko - if: 765d6298f2SSam Protsenko properties: 775d6298f2SSam Protsenko compatible: 785d6298f2SSam Protsenko contains: 7916e0c247SSam Protsenko const: samsung,exynos850-cmu-apm 8016e0c247SSam Protsenko 8116e0c247SSam Protsenko then: 8216e0c247SSam Protsenko properties: 8316e0c247SSam Protsenko clocks: 8416e0c247SSam Protsenko items: 8516e0c247SSam Protsenko - description: External reference clock (26 MHz) 8616e0c247SSam Protsenko - description: CMU_APM bus clock (from CMU_TOP) 8716e0c247SSam Protsenko 8816e0c247SSam Protsenko clock-names: 8916e0c247SSam Protsenko items: 9016e0c247SSam Protsenko - const: oscclk 9116e0c247SSam Protsenko - const: dout_clkcmu_apm_bus 9216e0c247SSam Protsenko 9316e0c247SSam Protsenko - if: 9416e0c247SSam Protsenko properties: 9516e0c247SSam Protsenko compatible: 9616e0c247SSam Protsenko contains: 9745bbf4d7SSam Protsenko const: samsung,exynos850-cmu-aud 9845bbf4d7SSam Protsenko 9945bbf4d7SSam Protsenko then: 10045bbf4d7SSam Protsenko properties: 10145bbf4d7SSam Protsenko clocks: 10245bbf4d7SSam Protsenko items: 10345bbf4d7SSam Protsenko - description: External reference clock (26 MHz) 10445bbf4d7SSam Protsenko - description: AUD clock (from CMU_TOP) 10545bbf4d7SSam Protsenko 10645bbf4d7SSam Protsenko clock-names: 10745bbf4d7SSam Protsenko items: 10845bbf4d7SSam Protsenko - const: oscclk 10945bbf4d7SSam Protsenko - const: dout_aud 11045bbf4d7SSam Protsenko 11145bbf4d7SSam Protsenko - if: 11245bbf4d7SSam Protsenko properties: 11345bbf4d7SSam Protsenko compatible: 11445bbf4d7SSam Protsenko contains: 115c2afeb79SSam Protsenko const: samsung,exynos850-cmu-cmgp 116c2afeb79SSam Protsenko 117c2afeb79SSam Protsenko then: 118c2afeb79SSam Protsenko properties: 119c2afeb79SSam Protsenko clocks: 120c2afeb79SSam Protsenko items: 121c2afeb79SSam Protsenko - description: External reference clock (26 MHz) 122c2afeb79SSam Protsenko - description: CMU_CMGP bus clock (from CMU_APM) 123c2afeb79SSam Protsenko 124c2afeb79SSam Protsenko clock-names: 125c2afeb79SSam Protsenko items: 126c2afeb79SSam Protsenko - const: oscclk 127c2afeb79SSam Protsenko - const: gout_clkcmu_cmgp_bus 128c2afeb79SSam Protsenko 129c2afeb79SSam Protsenko - if: 130c2afeb79SSam Protsenko properties: 131c2afeb79SSam Protsenko compatible: 132c2afeb79SSam Protsenko contains: 1335d6298f2SSam Protsenko const: samsung,exynos850-cmu-core 1345d6298f2SSam Protsenko 1355d6298f2SSam Protsenko then: 1365d6298f2SSam Protsenko properties: 1375d6298f2SSam Protsenko clocks: 1385d6298f2SSam Protsenko items: 1395d6298f2SSam Protsenko - description: External reference clock (26 MHz) 1405d6298f2SSam Protsenko - description: CMU_CORE bus clock (from CMU_TOP) 1415d6298f2SSam Protsenko - description: CCI clock (from CMU_TOP) 1425d6298f2SSam Protsenko - description: eMMC clock (from CMU_TOP) 1435d6298f2SSam Protsenko - description: SSS clock (from CMU_TOP) 1445d6298f2SSam Protsenko 1455d6298f2SSam Protsenko clock-names: 1465d6298f2SSam Protsenko items: 1475d6298f2SSam Protsenko - const: oscclk 1485d6298f2SSam Protsenko - const: dout_core_bus 1495d6298f2SSam Protsenko - const: dout_core_cci 1505d6298f2SSam Protsenko - const: dout_core_mmc_embd 1515d6298f2SSam Protsenko - const: dout_core_sss 1525d6298f2SSam Protsenko 1535d6298f2SSam Protsenko - if: 1545d6298f2SSam Protsenko properties: 1555d6298f2SSam Protsenko compatible: 1565d6298f2SSam Protsenko contains: 1575d6298f2SSam Protsenko const: samsung,exynos850-cmu-dpu 1585d6298f2SSam Protsenko 1595d6298f2SSam Protsenko then: 1605d6298f2SSam Protsenko properties: 1615d6298f2SSam Protsenko clocks: 1625d6298f2SSam Protsenko items: 1635d6298f2SSam Protsenko - description: External reference clock (26 MHz) 1645d6298f2SSam Protsenko - description: DPU clock (from CMU_TOP) 1655d6298f2SSam Protsenko 1665d6298f2SSam Protsenko clock-names: 1675d6298f2SSam Protsenko items: 1685d6298f2SSam Protsenko - const: oscclk 1695d6298f2SSam Protsenko - const: dout_dpu 1705d6298f2SSam Protsenko 1715d6298f2SSam Protsenko - if: 1725d6298f2SSam Protsenko properties: 1735d6298f2SSam Protsenko compatible: 1745d6298f2SSam Protsenko contains: 1755d6298f2SSam Protsenko const: samsung,exynos850-cmu-hsi 1765d6298f2SSam Protsenko 1775d6298f2SSam Protsenko then: 1785d6298f2SSam Protsenko properties: 1795d6298f2SSam Protsenko clocks: 1805d6298f2SSam Protsenko items: 1815d6298f2SSam Protsenko - description: External reference clock (26 MHz) 1825d6298f2SSam Protsenko - description: External RTC clock (32768 Hz) 1835d6298f2SSam Protsenko - description: CMU_HSI bus clock (from CMU_TOP) 1845d6298f2SSam Protsenko - description: SD card clock (from CMU_TOP) 1855d6298f2SSam Protsenko - description: "USB 2.0 DRD clock (from CMU_TOP)" 1865d6298f2SSam Protsenko 1875d6298f2SSam Protsenko clock-names: 1885d6298f2SSam Protsenko items: 1895d6298f2SSam Protsenko - const: oscclk 1905d6298f2SSam Protsenko - const: rtcclk 1915d6298f2SSam Protsenko - const: dout_hsi_bus 1925d6298f2SSam Protsenko - const: dout_hsi_mmc_card 1935d6298f2SSam Protsenko - const: dout_hsi_usb20drd 1945d6298f2SSam Protsenko 1955d6298f2SSam Protsenko - if: 1965d6298f2SSam Protsenko properties: 1975d6298f2SSam Protsenko compatible: 1985d6298f2SSam Protsenko contains: 199*f20f35f4SSam Protsenko const: samsung,exynos850-cmu-is 200*f20f35f4SSam Protsenko 201*f20f35f4SSam Protsenko then: 202*f20f35f4SSam Protsenko properties: 203*f20f35f4SSam Protsenko clocks: 204*f20f35f4SSam Protsenko items: 205*f20f35f4SSam Protsenko - description: External reference clock (26 MHz) 206*f20f35f4SSam Protsenko - description: CMU_IS bus clock (from CMU_TOP) 207*f20f35f4SSam Protsenko - description: Image Texture Processing core clock (from CMU_TOP) 208*f20f35f4SSam Protsenko - description: Visual Recognition Accelerator clock (from CMU_TOP) 209*f20f35f4SSam Protsenko - description: Geometric Distortion Correction clock (from CMU_TOP) 210*f20f35f4SSam Protsenko 211*f20f35f4SSam Protsenko clock-names: 212*f20f35f4SSam Protsenko items: 213*f20f35f4SSam Protsenko - const: oscclk 214*f20f35f4SSam Protsenko - const: dout_is_bus 215*f20f35f4SSam Protsenko - const: dout_is_itp 216*f20f35f4SSam Protsenko - const: dout_is_vra 217*f20f35f4SSam Protsenko - const: dout_is_gdc 218*f20f35f4SSam Protsenko 219*f20f35f4SSam Protsenko - if: 220*f20f35f4SSam Protsenko properties: 221*f20f35f4SSam Protsenko compatible: 222*f20f35f4SSam Protsenko contains: 2235d6298f2SSam Protsenko const: samsung,exynos850-cmu-peri 2245d6298f2SSam Protsenko 2255d6298f2SSam Protsenko then: 2265d6298f2SSam Protsenko properties: 2275d6298f2SSam Protsenko clocks: 2285d6298f2SSam Protsenko items: 2295d6298f2SSam Protsenko - description: External reference clock (26 MHz) 2305d6298f2SSam Protsenko - description: CMU_PERI bus clock (from CMU_TOP) 2315d6298f2SSam Protsenko - description: UART clock (from CMU_TOP) 2325d6298f2SSam Protsenko - description: Parent clock for HSI2C and SPI (from CMU_TOP) 2335d6298f2SSam Protsenko 2345d6298f2SSam Protsenko clock-names: 2355d6298f2SSam Protsenko items: 2365d6298f2SSam Protsenko - const: oscclk 2375d6298f2SSam Protsenko - const: dout_peri_bus 2385d6298f2SSam Protsenko - const: dout_peri_uart 2395d6298f2SSam Protsenko - const: dout_peri_ip 2405d6298f2SSam Protsenko 2415d6298f2SSam Protsenkorequired: 2425d6298f2SSam Protsenko - compatible 2435d6298f2SSam Protsenko - "#clock-cells" 2445d6298f2SSam Protsenko - clocks 2455d6298f2SSam Protsenko - clock-names 2465d6298f2SSam Protsenko - reg 2475d6298f2SSam Protsenko 2485d6298f2SSam ProtsenkoadditionalProperties: false 2495d6298f2SSam Protsenko 2505d6298f2SSam Protsenkoexamples: 2515d6298f2SSam Protsenko # Clock controller node for CMU_PERI 2525d6298f2SSam Protsenko - | 2535d6298f2SSam Protsenko #include <dt-bindings/clock/exynos850.h> 2545d6298f2SSam Protsenko 2555d6298f2SSam Protsenko cmu_peri: clock-controller@10030000 { 2565d6298f2SSam Protsenko compatible = "samsung,exynos850-cmu-peri"; 2575d6298f2SSam Protsenko reg = <0x10030000 0x8000>; 2585d6298f2SSam Protsenko #clock-cells = <1>; 2595d6298f2SSam Protsenko 2605d6298f2SSam Protsenko clocks = <&oscclk>, <&cmu_top CLK_DOUT_PERI_BUS>, 2615d6298f2SSam Protsenko <&cmu_top CLK_DOUT_PERI_UART>, 2625d6298f2SSam Protsenko <&cmu_top CLK_DOUT_PERI_IP>; 2635d6298f2SSam Protsenko clock-names = "oscclk", "dout_peri_bus", 2645d6298f2SSam Protsenko "dout_peri_uart", "dout_peri_ip"; 2655d6298f2SSam Protsenko }; 2665d6298f2SSam Protsenko 2675d6298f2SSam Protsenko... 268