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Diffstat (limited to 'Bindings/clock/fsl,qoriq-clock.yaml')
| -rw-r--r-- | Bindings/clock/fsl,qoriq-clock.yaml | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/Bindings/clock/fsl,qoriq-clock.yaml b/Bindings/clock/fsl,qoriq-clock.yaml new file mode 100644 index 000000000000..95a3e3b24267 --- /dev/null +++ b/Bindings/clock/fsl,qoriq-clock.yaml @@ -0,0 +1,207 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/fsl,qoriq-clock.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Clock Block on Freescale QorIQ Platforms + +maintainers: + - Frank Li <Frank.Li@nxp.com> + +description: | + Freescale QorIQ chips take primary clocking input from the external + SYSCLK signal. The SYSCLK input (frequency) is multiplied using + multiple phase locked loops (PLL) to create a variety of frequencies + which can then be passed to a variety of internal logic, including + cores and peripheral IP blocks. + Please refer to the Reference Manual for details. + + All references to "1.0" and "2.0" refer to the QorIQ chassis version to + which the chip complies. + + Chassis Version Example Chips + --------------- ------------- + 1.0 p4080, p5020, p5040 + 2.0 t4240 + + Clock Provider + + The clockgen node should act as a clock provider, though in older device + trees the children of the clockgen node are the clock providers. + +properties: + compatible: + oneOf: + - items: + - enum: + - fsl,p2041-clockgen + - fsl,p3041-clockgen + - fsl,p4080-clockgen + - fsl,p5020-clockgen + - fsl,p5040-clockgen + - const: fsl,qoriq-clockgen-1.0 + - items: + - enum: + - fsl,t1023-clockgen + - fsl,t1024-clockgen + - fsl,t1040-clockgen + - fsl,t1042-clockgen + - fsl,t2080-clockgen + - fsl,t2081-clockgen + - fsl,t4240-clockgen + - const: fsl,qoriq-clockgen-2.0 + - items: + - enum: + - fsl,b4420-clockgen + - fsl,b4860-clockgen + - const: fsl,b4-clockgen + - items: + - enum: + - fsl,ls1012a-clockgen + - fsl,ls1021a-clockgen + - fsl,ls1028a-clockgen + - fsl,ls1043a-clockgen + - fsl,ls1046a-clockgen + - fsl,ls1088a-clockgen + - fsl,ls2080a-clockgen + - fsl,lx2160a-clockgen + + reg: + maxItems: 1 + + ranges: true + + '#address-cells': + const: 1 + + '#size-cells': + const: 1 + + '#clock-cells': + const: 2 + description: | + The first cell of the clock specifier is the clock type, and the + second cell is the clock index for the specified type. + + Type# Name Index Cell + 0 sysclk must be 0 + 1 cmux index (n in CLKCnCSR) + 2 hwaccel index (n in CLKCGnHWACSR) + 3 fman 0 for fm1, 1 for fm2 + 4 platform pll n=pll/(n+1). For example, when n=1, + that means output_freq=PLL_freq/2. + 5 coreclk must be 0 + + clock-frequency: + description: Input system clock frequency (SYSCLK) + + clocks: + items: + - description: + sysclk may be provided as an input clock. Either clock-frequency + or clocks must be provided. + - description: + A second input clock, called "coreclk", may be provided if + core PLLs are based on a different input clock from the + platform PLL. + minItems: 1 + + clock-names: + items: + - const: sysclk + - const: coreclk + +patternProperties: + '^mux[0-9]@[a-f0-9]+$': + deprecated: true + $ref: fsl,qoriq-clock-legacy.yaml + + '^sysclk(-[a-z0-9]+)?$': + deprecated: true + $ref: fsl,qoriq-clock-legacy.yaml + + '^pll[0-9]@[a-f0-9]+$': + deprecated: true + $ref: fsl,qoriq-clock-legacy.yaml + + '^platform\-pll@[a-f0-9]+$': + deprecated: true + $ref: fsl,qoriq-clock-legacy.yaml + +required: + - compatible + - reg + - '#clock-cells' + +additionalProperties: false + +examples: + - | + /* clock provider example */ + global-utilities@e1000 { + compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0"; + reg = <0xe1000 0x1000>; + clock-frequency = <133333333>; + #clock-cells = <2>; + }; + + - | + /* Legacy example */ + global-utilities@e1000 { + compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0"; + reg = <0xe1000 0x1000>; + ranges = <0x0 0xe1000 0x1000>; + clock-frequency = <133333333>; + #address-cells = <1>; + #size-cells = <1>; + #clock-cells = <2>; + + sysclk: sysclk { + compatible = "fsl,qoriq-sysclk-1.0"; + clock-output-names = "sysclk"; + #clock-cells = <0>; + }; + + pll0: pll0@800 { + compatible = "fsl,qoriq-core-pll-1.0"; + reg = <0x800 0x4>; + #clock-cells = <1>; + clocks = <&sysclk>; + clock-output-names = "pll0", "pll0-div2"; + }; + + pll1: pll1@820 { + compatible = "fsl,qoriq-core-pll-1.0"; + reg = <0x820 0x4>; + #clock-cells = <1>; + clocks = <&sysclk>; + clock-output-names = "pll1", "pll1-div2"; + }; + + mux0: mux0@0 { + compatible = "fsl,qoriq-core-mux-1.0"; + reg = <0x0 0x4>; + #clock-cells = <0>; + clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>; + clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2"; + clock-output-names = "cmux0"; + }; + + mux1: mux1@20 { + compatible = "fsl,qoriq-core-mux-1.0"; + reg = <0x20 0x4>; + #clock-cells = <0>; + clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>; + clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2"; + clock-output-names = "cmux1"; + }; + + platform-pll@c00 { + #clock-cells = <1>; + reg = <0xc00 0x4>; + compatible = "fsl,qoriq-platform-pll-1.0"; + clocks = <&sysclk>; + clock-output-names = "platform-pll", "platform-pll-div2"; + }; + }; |