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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/…
…benh/powerpc Pull more powerpc bits from Ben Herrenschmidt: "Here are a few more powerpc bits for this merge window. The bulk is made of two pull requests from Scott and Anatolij that I had missed previously (they arrived while I was away). Since both their branches are in -next independently, and the content has been around for a little while, they can still go in. The rest is mostly bug and regression fixes, a small series of cleanups to our pseries cpuidle code (including moving it to the right place), and one new cpuidle bakend for the powernv platform. I also wired up the new sched_attr syscalls" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (37 commits) powerpc: Wire up sched_setattr and sched_getattr syscalls powerpc/hugetlb: Replace __get_cpu_var with get_cpu_var powerpc: Make sure "cache" directory is removed when offlining cpu powerpc/mm: Fix mmap errno when MAP_FIXED is set and mapping exceeds the allowed address space powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform. powerpc/pseries/cpuidle: smt-snooze-delay cleanup. powerpc/pseries/cpuidle: Remove MAX_IDLE_STATE macro. powerpc/pseries/cpuidle: Make cpuidle-pseries backend driver a non-module. powerpc/pseries/cpuidle: Use cpuidle_register() for initialisation. powerpc/pseries/cpuidle: Move processor_idle.c to drivers/cpuidle. powerpc: Fix 32-bit frames for signals delivered when transactional powerpc/iommu: Fix initialisation of DART iommu table powerpc/numa: Fix decimal permissions powerpc/mm: Fix compile error of pgtable-ppc64.h powerpc: Fix hw breakpoints on !HAVE_HW_BREAKPOINT configurations clk: corenet: Adds the clock binding powerpc/booke64: Guard e6500 tlb handler with CONFIG_PPC_FSL_BOOK3E powerpc/512x: dts: add MPC5125 clock specs powerpc/512x: clk: support MPC5121/5123/5125 SoC variants powerpc/512x: clk: enforce even SDHC divider values ...
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Documentation/devicetree/bindings/clock/corenet-clock.txt
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* Clock Block on Freescale CoreNet Platforms | ||
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Freescale CoreNet 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. | ||
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1. Clock Block Binding | ||
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Required properties: | ||
- compatible: Should contain a specific clock block compatible string | ||
and a single chassis clock compatible string. | ||
Clock block strings include, but not limited to, one of the: | ||
* "fsl,p2041-clockgen" | ||
* "fsl,p3041-clockgen" | ||
* "fsl,p4080-clockgen" | ||
* "fsl,p5020-clockgen" | ||
* "fsl,p5040-clockgen" | ||
* "fsl,t4240-clockgen" | ||
* "fsl,b4420-clockgen" | ||
* "fsl,b4860-clockgen" | ||
Chassis clock strings include: | ||
* "fsl,qoriq-clockgen-1.0": for chassis 1.0 clocks | ||
* "fsl,qoriq-clockgen-2.0": for chassis 2.0 clocks | ||
- reg: Describes the address of the device's resources within the | ||
address space defined by its parent bus, and resource zero | ||
represents the clock register set | ||
- clock-frequency: Input system clock frequency | ||
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Recommended properties: | ||
- ranges: Allows valid translation between child's address space and | ||
parent's. Must be present if the device has sub-nodes. | ||
- #address-cells: Specifies the number of cells used to represent | ||
physical base addresses. Must be present if the device has | ||
sub-nodes and set to 1 if present | ||
- #size-cells: Specifies the number of cells used to represent | ||
the size of an address. Must be present if the device has | ||
sub-nodes and set to 1 if present | ||
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2. Clock Provider/Consumer Binding | ||
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Most of the bindings are from the common clock binding[1]. | ||
[1] Documentation/devicetree/bindings/clock/clock-bindings.txt | ||
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Required properties: | ||
- compatible : Should include one of the following: | ||
* "fsl,qoriq-core-pll-1.0" for core PLL clocks (v1.0) | ||
* "fsl,qoriq-core-pll-2.0" for core PLL clocks (v2.0) | ||
* "fsl,qoriq-core-mux-1.0" for core mux clocks (v1.0) | ||
* "fsl,qoriq-core-mux-2.0" for core mux clocks (v2.0) | ||
* "fsl,qoriq-sysclk-1.0": for input system clock (v1.0). | ||
It takes parent's clock-frequency as its clock. | ||
* "fsl,qoriq-sysclk-2.0": for input system clock (v2.0). | ||
It takes parent's clock-frequency as its clock. | ||
- #clock-cells: From common clock binding. The number of cells in a | ||
clock-specifier. Should be <0> for "fsl,qoriq-sysclk-[1,2].0" | ||
clocks, or <1> for "fsl,qoriq-core-pll-[1,2].0" clocks. | ||
For "fsl,qoriq-core-pll-[1,2].0" clocks, the single | ||
clock-specifier cell may take the following values: | ||
* 0 - equal to the PLL frequency | ||
* 1 - equal to the PLL frequency divided by 2 | ||
* 2 - equal to the PLL frequency divided by 4 | ||
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Recommended properties: | ||
- clocks: Should be the phandle of input parent clock | ||
- clock-names: From common clock binding, indicates the clock name | ||
- clock-output-names: From common clock binding, indicates the names of | ||
output clocks | ||
- reg: Should be the offset and length of clock block base address. | ||
The length should be 4. | ||
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Example for clock block and clock provider: | ||
/ { | ||
clockgen: global-utilities@e1000 { | ||
compatible = "fsl,p5020-clockgen", "fsl,qoriq-clockgen-1.0"; | ||
ranges = <0x0 0xe1000 0x1000>; | ||
clock-frequency = <133333333>; | ||
reg = <0xe1000 0x1000>; | ||
#address-cells = <1>; | ||
#size-cells = <1>; | ||
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sysclk: sysclk { | ||
#clock-cells = <0>; | ||
compatible = "fsl,qoriq-sysclk-1.0"; | ||
clock-output-names = "sysclk"; | ||
} | ||
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pll0: pll0@800 { | ||
#clock-cells = <1>; | ||
reg = <0x800 0x4>; | ||
compatible = "fsl,qoriq-core-pll-1.0"; | ||
clocks = <&sysclk>; | ||
clock-output-names = "pll0", "pll0-div2"; | ||
}; | ||
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pll1: pll1@820 { | ||
#clock-cells = <1>; | ||
reg = <0x820 0x4>; | ||
compatible = "fsl,qoriq-core-pll-1.0"; | ||
clocks = <&sysclk>; | ||
clock-output-names = "pll1", "pll1-div2"; | ||
}; | ||
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mux0: mux0@0 { | ||
#clock-cells = <0>; | ||
reg = <0x0 0x4>; | ||
compatible = "fsl,qoriq-core-mux-1.0"; | ||
clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>; | ||
clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2"; | ||
clock-output-names = "cmux0"; | ||
}; | ||
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mux1: mux1@20 { | ||
#clock-cells = <0>; | ||
reg = <0x20 0x4>; | ||
compatible = "fsl,qoriq-core-mux-1.0"; | ||
clocks = <&pll0 0>, <&pll0 1>, <&pll1 0>, <&pll1 1>; | ||
clock-names = "pll0", "pll0-div2", "pll1", "pll1-div2"; | ||
clock-output-names = "cmux1"; | ||
}; | ||
}; | ||
} | ||
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Example for clock consumer: | ||
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/ { | ||
cpu0: PowerPC,e5500@0 { | ||
... | ||
clocks = <&mux0>; | ||
... | ||
}; | ||
} |
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