diff options
Diffstat (limited to 'Documentation/devicetree/bindings/clock/rockchip,rk3288-cru.txt')
-rw-r--r-- | Documentation/devicetree/bindings/clock/rockchip,rk3288-cru.txt | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/Documentation/devicetree/bindings/clock/rockchip,rk3288-cru.txt b/Documentation/devicetree/bindings/clock/rockchip,rk3288-cru.txt deleted file mode 100644 index bf3a9ec19241..000000000000 --- a/Documentation/devicetree/bindings/clock/rockchip,rk3288-cru.txt +++ /dev/null @@ -1,67 +0,0 @@ -* 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>; - }; |