rockchip,rk3308-cru.yaml (2236B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/clock/rockchip,rk3308-cru.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Rockchip RK3308 Clock and Reset Unit (CRU) 8 9maintainers: 10 - Elaine Zhang <zhangqing@rock-chips.com> 11 - Heiko Stuebner <heiko@sntech.de> 12 13description: | 14 The RK3308 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/rk3308-cru.h headers and can be 20 used in device tree sources. Similar macros exist for the reset sources in 21 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 - "mclk_i2s0_8ch_in", "mclk_i2s1_8ch_in", 28 "mclk_i2s2_8ch_in", "mclk_i2s3_8ch_in", 29 "mclk_i2s0_2ch_in", "mclk_i2s1_2ch_in" - external I2S or 30 SPDIF clock - optional 31 - "mac_clkin" - external MAC clock - optional 32 33properties: 34 compatible: 35 enum: 36 - rockchip,rk3308-cru 37 38 reg: 39 maxItems: 1 40 41 "#clock-cells": 42 const: 1 43 44 "#reset-cells": 45 const: 1 46 47 clocks: 48 maxItems: 1 49 50 clock-names: 51 const: xin24m 52 53 rockchip,grf: 54 $ref: /schemas/types.yaml#/definitions/phandle 55 description: 56 Phandle to the syscon managing the "general register files" (GRF), 57 if missing pll rates are not changeable, due to the missing pll 58 lock status. 59 60required: 61 - compatible 62 - reg 63 - "#clock-cells" 64 - "#reset-cells" 65 66additionalProperties: false 67 68examples: 69 - | 70 cru: clock-controller@ff500000 { 71 compatible = "rockchip,rk3308-cru"; 72 reg = <0xff500000 0x1000>; 73 rockchip,grf = <&grf>; 74 #clock-cells = <1>; 75 #reset-cells = <1>; 76 };