rockchip,rk3188-cru.yaml (2307B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/clock/rockchip,rk3188-cru.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip RK3188/RK3066 Clock and Reset Unit (CRU) 8 9maintainers: 10 - Elaine Zhang <zhangqing@rock-chips.com> 11 - Heiko Stuebner <heiko@sntech.de> 12 13description: | 14 The RK3188/RK3066 clock controller generates and supplies clocks to various 15 controllers within the SoC and also implements a reset controller for SoC 16 peripherals. 17 Each clock is assigned an identifier and client nodes can use this identifier 18 to specify the clock which they consume. All available clocks are defined as 19 preprocessor macros in the dt-bindings/clock/rk3188-cru.h and 20 dt-bindings/clock/rk3066-cru.h headers and can be used in device tree sources. 21 Similar macros exist for the reset sources in these files. 22 There are several clocks that are generated outside the SoC. It is expected 23 that they are defined using standard clock bindings with following 24 clock-output-names: 25 - "xin24m" - crystal input - required 26 - "xin32k" - RTC clock - optional 27 - "xin27m" - 27mhz crystal input on RK3066 - optional 28 - "ext_hsadc" - external HSADC clock - optional 29 - "ext_cif0" - external camera clock - optional 30 - "ext_rmii" - external RMII clock - optional 31 - "ext_jtag" - external JTAG clock - optional 32 33properties: 34 compatible: 35 enum: 36 - rockchip,rk3066a-cru 37 - rockchip,rk3188-cru 38 - rockchip,rk3188a-cru 39 40 reg: 41 maxItems: 1 42 43 "#clock-cells": 44 const: 1 45 46 "#reset-cells": 47 const: 1 48 49 clocks: 50 maxItems: 1 51 52 clock-names: 53 const: xin24m 54 55 rockchip,grf: 56 $ref: /schemas/types.yaml#/definitions/phandle 57 description: 58 Phandle to the syscon managing the "general register files" (GRF), 59 if missing pll rates are not changeable, due to the missing pll 60 lock status. 61 62required: 63 - compatible 64 - reg 65 - "#clock-cells" 66 - "#reset-cells" 67 68additionalProperties: false 69 70examples: 71 - | 72 cru: clock-controller@20000000 { 73 compatible = "rockchip,rk3188-cru"; 74 reg = <0x20000000 0x1000>; 75 rockchip,grf = <&grf>; 76 #clock-cells = <1>; 77 #reset-cells = <1>; 78 };