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Diffstat (limited to 'Bindings/clock/rockchip,rk3308-cru.yaml')
-rw-r--r-- | Bindings/clock/rockchip,rk3308-cru.yaml | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/Bindings/clock/rockchip,rk3308-cru.yaml b/Bindings/clock/rockchip,rk3308-cru.yaml new file mode 100644 index 00000000000..fec37f5b80f --- /dev/null +++ b/Bindings/clock/rockchip,rk3308-cru.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0+ OR MIT) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/rockchip,rk3308-cru.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip RK3308 Clock and Reset Unit (CRU) + +maintainers: + - Elaine Zhang <zhangqing@rock-chips.com> + - Heiko Stuebner <heiko@sntech.de> + +description: | + The RK3308 clock controller generates and supplies clocks to various + controllers within the SoC and also implements a reset controller for SoC + peripherals. + Each clock is assigned an identifier and client nodes can use this identifier + to specify the clock which they consume. All available clocks are defined as + preprocessor macros in the dt-bindings/clock/rk3308-cru.h headers and can be + used in device tree sources. Similar macros exist for the reset sources in + these files. + There are several clocks that are generated outside the SoC. It is expected + that they are defined using standard clock bindings with following + clock-output-names: + - "xin24m" - crystal input - required + - "xin32k" - rtc clock - optional + - "mclk_i2s0_8ch_in", "mclk_i2s1_8ch_in", + "mclk_i2s2_8ch_in", "mclk_i2s3_8ch_in", + "mclk_i2s0_2ch_in", "mclk_i2s1_2ch_in" - external I2S or + SPDIF clock - optional + - "mac_clkin" - external MAC clock - optional + +properties: + compatible: + enum: + - rockchip,rk3308-cru + + reg: + maxItems: 1 + + "#clock-cells": + const: 1 + + "#reset-cells": + const: 1 + + clocks: + maxItems: 1 + + clock-names: + const: xin24m + + rockchip,grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the "general register files" (GRF), + if missing pll rates are not changeable, due to the missing pll + lock status. + +required: + - compatible + - reg + - "#clock-cells" + - "#reset-cells" + +additionalProperties: false + +examples: + - | + cru: clock-controller@ff500000 { + compatible = "rockchip,rk3308-cru"; + reg = <0xff500000 0x1000>; + rockchip,grf = <&grf>; + #clock-cells = <1>; + #reset-cells = <1>; + }; |