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| -rw-r--r-- | Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt | 56 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml | 72 |
2 files changed, 72 insertions, 56 deletions
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt deleted file mode 100644 index 20df350b9ef3..000000000000 --- a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.txt +++ /dev/null @@ -1,56 +0,0 @@ -* Rockchip RK3036 Clock and Reset Unit - -The RK3036 clock controller generates and supplies clock to various -controllers within the SoC and also implements a reset controller for SoC -peripherals. - -Required Properties: - -- compatible: should be "rockchip,rk3036-cru" -- reg: physical base address of the controller and length of memory mapped - region. -- #clock-cells: should be 1. -- #reset-cells: should be 1. - -Optional Properties: - -- rockchip,grf: phandle to the syscon managing the "general register files" - If missing pll rates are not changeable, due to the missing pll lock status. - -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/rk3036-cru.h headers and can be -used in device tree sources. Similar macros exist for the reset sources in -these files. - -External clocks: - -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, - - "ext_i2s" - external I2S clock - optional, - - "rmii_clkin" - external EMAC clock - optional - -Example: Clock controller node: - - cru: cru@20000000 { - compatible = "rockchip,rk3036-cru"; - reg = <0x20000000 0x1000>; - rockchip,grf = <&grf>; - - #clock-cells = <1>; - #reset-cells = <1>; - }; - -Example: UART controller node that consumes the clock generated by the clock - controller: - - uart0: serial@20060000 { - compatible = "snps,dw-apb-uart"; - reg = <0x20060000 0x100>; - interrupts = <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>; - reg-shift = <2>; - reg-io-width = <4>; - clocks = <&cru SCLK_UART0>; - }; diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml new file mode 100644 index 000000000000..1376230fede6 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/rockchip,rk3036-cru.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/rockchip,rk3036-cru.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip RK3036 Clock and Reset Unit (CRU) + +maintainers: + - Elaine Zhang <zhangqing@rock-chips.com> + - Heiko Stuebner <heiko@sntech.de> + +description: | + The RK3036 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/rk3036-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 + - "ext_i2s" - external I2S clock - optional + - "rmii_clkin" - external EMAC clock - optional + +properties: + compatible: + enum: + - rockchip,rk3036-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@20000000 { + compatible = "rockchip,rk3036-cru"; + reg = <0x20000000 0x1000>; + rockchip,grf = <&grf>; + #clock-cells = <1>; + #reset-cells = <1>; + }; |