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-* Rockchip RK3288 Clock and Reset Unit
-
-The RK3288 clock controller generates and supplies clock to various
-controllers within the SoC and also implements a reset controller for SoC
-peripherals.
-
-A revision of this SoC is available: rk3288w. The clock tree is a bit
-different so another dt-compatible is available. Noticed that it is only
-setting the difference but there is no automatic revision detection. This
-should be performed by bootloaders.
-
-Required Properties:
-
-- compatible: should be "rockchip,rk3288-cru" or "rockchip,rk3288w-cru" in
- case of this revision of Rockchip rk3288.
-- 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/rk3288-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,
- - "xin32k" - rtc clock - optional,
- - "ext_i2s" - external I2S clock - optional,
- - "ext_hsadc" - external HSADC clock - optional,
- - "ext_edp_24m" - external display port clock - optional,
- - "ext_vip" - external VIP clock - optional,
- - "ext_isp" - external ISP clock - optional,
- - "ext_jtag" - external JTAG clock - optional
-
-Example: Clock controller node:
-
- cru: cru@20000000 {
- compatible = "rockchip,rk3188-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@10124000 {
- compatible = "snps,dw-apb-uart";
- reg = <0x10124000 0x400>;
- interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
- reg-shift = <2>;
- reg-io-width = <1>;
- clocks = <&cru SCLK_UART0>;
- };