1 # SPDX-License-Identifier: (GPL-2.0+ OR MIT)
4 $id: http://devicetree.org/schemas/clock/rockchip,px30-cru.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Rockchip PX30 Clock and Reset Unit (CRU)
10 - Elaine Zhang <zhangqing@rock-chips.com>
11 - Heiko Stuebner <heiko@sntech.de>
14 The PX30 clock controller generates and supplies clocks to various
15 controllers within the SoC and also implements a reset controller for SoC
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/px30-cru.h headers and can be
20 used in device tree sources. Similar macros exist for the reset sources in
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
25 - "xin24m" - crystal input - required
26 - "xin32k" - rtc clock - optional
27 - "i2sx_clkin" - external I2S clock - optional
28 - "gmac_clkin" - external GMAC clock - optional
34 - rockchip,px30-pmucru
48 - description: Clock for both PMUCRU and CRU
49 - description: Clock for CRU (sourced from PMUCRU)
58 $ref: /schemas/types.yaml#/definitions/phandle
60 Phandle to the syscon managing the "general register files" (GRF),
61 if missing pll rates are not changeable, due to the missing pll
77 const: rockchip,px30-cru
95 additionalProperties: false
99 #include <dt-bindings/clock/px30-cru.h>
101 pmucru: clock-controller@ff2bc000 {
102 compatible = "rockchip,px30-pmucru";
103 reg = <0xff2bc000 0x1000>;
105 clock-names = "xin24m";
106 rockchip,grf = <&grf>;
111 cru: clock-controller@ff2b0000 {
112 compatible = "rockchip,px30-cru";
113 reg = <0xff2b0000 0x1000>;
114 clocks = <&xin24m>, <&pmucru PLL_GPLL>;
115 clock-names = "xin24m", "gpll";
116 rockchip,grf = <&grf>;