937d6eefc7
- Various kerneldoc script enhancements.
- More RST conversions; those are slowing down as we run out of things to
convert, but we're a ways from done still.
- Dan's "maintainer profile entry" work landed at last. Now we just need
to get maintainers to fill in the profiles...
- A reworking of the parallel build setup to work better with a variety of
systems (and to not take over huge systems entirely in particular).
- The MAINTAINERS file is now converted to RST during the build.
Hopefully nobody ever tries to print this thing, or they will need to
load a lot of paper.
- A script and documentation making it easy for maintainers to add Link:
tags at commit time.
Also included is the removal of a bunch of spurious CR characters.
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Merge tag 'docs-5.5a' of git://git.lwn.net/linux
Pull Documentation updates from Jonathan Corbet:
"Here are the main documentation changes for 5.5:
- Various kerneldoc script enhancements.
- More RST conversions; those are slowing down as we run out of
things to convert, but we're a ways from done still.
- Dan's "maintainer profile entry" work landed at last. Now we just
need to get maintainers to fill in the profiles...
- A reworking of the parallel build setup to work better with a
variety of systems (and to not take over huge systems entirely in
particular).
- The MAINTAINERS file is now converted to RST during the build.
Hopefully nobody ever tries to print this thing, or they will need
to load a lot of paper.
- A script and documentation making it easy for maintainers to add
Link: tags at commit time.
Also included is the removal of a bunch of spurious CR characters"
* tag 'docs-5.5a' of git://git.lwn.net/linux: (91 commits)
docs: remove a bunch of stray CRs
docs: fix up the maintainer profile document
libnvdimm, MAINTAINERS: Maintainer Entry Profile
Maintainer Handbook: Maintainer Entry Profile
MAINTAINERS: Reclaim the P: tag for Maintainer Entry Profile
docs, parallelism: Rearrange how jobserver reservations are made
docs, parallelism: Do not leak blocking mode to other readers
docs, parallelism: Fix failure path and add comment
Documentation: Remove bootmem_debug from kernel-parameters.txt
Documentation: security: core.rst: fix warnings
Documentation/process/howto/kokr: Update for 4.x -> 5.x versioning
Documentation/translation: Use Korean for Korean translation title
docs/memory-barriers.txt: Remove remaining references to mmiowb()
docs/memory-barriers.txt/kokr: Update I/O section to be clearer about CPU vs thread
docs/memory-barriers.txt/kokr: Fix style, spacing and grammar in I/O section
Documentation/kokr: Kill all references to mmiowb()
docs/memory-barriers.txt/kokr: Rewrite "KERNEL I/O BARRIER EFFECTS" section
docs: Add initial documentation for devfreq
Documentation: Document how to get links with git am
docs: Add request_irq() documentation
...
137 lines
3.3 KiB
Text
137 lines
3.3 KiB
Text
Ingenic JZ47xx SoCs Timer/Counter Unit devicetree bindings
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==========================================================
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For a description of the TCU hardware and drivers, have a look at
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Documentation/mips/ingenic-tcu.rst.
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Required properties:
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- compatible: Must be one of:
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* ingenic,jz4740-tcu
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* ingenic,jz4725b-tcu
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* ingenic,jz4770-tcu
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followed by "simple-mfd".
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- reg: Should be the offset/length value corresponding to the TCU registers
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- clocks: List of phandle & clock specifiers for clocks external to the TCU.
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The "pclk", "rtc" and "ext" clocks should be provided. The "tcu" clock
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should be provided if the SoC has it.
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- clock-names: List of name strings for the external clocks.
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- #clock-cells: Should be <1>;
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Clock consumers specify this argument to identify a clock. The valid values
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may be found in <dt-bindings/clock/ingenic,tcu.h>.
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- interrupt-controller : Identifies the node as an interrupt controller
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- #interrupt-cells : Specifies the number of cells needed to encode an
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interrupt source. The value should be 1.
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- interrupts : Specifies the interrupt the controller is connected to.
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Optional properties:
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- ingenic,pwm-channels-mask: Bitmask of TCU channels reserved for PWM use.
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Default value is 0xfc.
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Children nodes
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==========================================================
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PWM node:
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---------
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Required properties:
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- compatible: Must be one of:
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* ingenic,jz4740-pwm
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* ingenic,jz4725b-pwm
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- #pwm-cells: Should be 3. See ../pwm/pwm.yaml for a description of the cell
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format.
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- clocks: List of phandle & clock specifiers for the TCU clocks.
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- clock-names: List of name strings for the TCU clocks.
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Watchdog node:
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--------------
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Required properties:
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- compatible: Must be "ingenic,jz4740-watchdog"
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- clocks: phandle to the WDT clock
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- clock-names: should be "wdt"
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OS Timer node:
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---------
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Required properties:
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- compatible: Must be one of:
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* ingenic,jz4725b-ost
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* ingenic,jz4770-ost
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- clocks: phandle to the OST clock
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- clock-names: should be "ost"
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- interrupts : Specifies the interrupt the OST is connected to.
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Example
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==========================================================
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#include <dt-bindings/clock/jz4770-cgu.h>
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#include <dt-bindings/clock/ingenic,tcu.h>
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/ {
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tcu: timer@10002000 {
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compatible = "ingenic,jz4770-tcu", "simple-mfd";
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reg = <0x10002000 0x1000>;
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#address-cells = <1>;
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#size-cells = <1>;
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ranges = <0x0 0x10002000 0x1000>;
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#clock-cells = <1>;
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clocks = <&cgu JZ4770_CLK_RTC
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&cgu JZ4770_CLK_EXT
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&cgu JZ4770_CLK_PCLK>;
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clock-names = "rtc", "ext", "pclk";
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interrupt-controller;
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#interrupt-cells = <1>;
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interrupt-parent = <&intc>;
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interrupts = <27 26 25>;
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watchdog: watchdog@0 {
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compatible = "ingenic,jz4740-watchdog";
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reg = <0x0 0xc>;
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clocks = <&tcu TCU_CLK_WDT>;
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clock-names = "wdt";
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};
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pwm: pwm@40 {
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compatible = "ingenic,jz4740-pwm";
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reg = <0x40 0x80>;
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#pwm-cells = <3>;
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clocks = <&tcu TCU_CLK_TIMER0
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&tcu TCU_CLK_TIMER1
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&tcu TCU_CLK_TIMER2
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&tcu TCU_CLK_TIMER3
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&tcu TCU_CLK_TIMER4
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&tcu TCU_CLK_TIMER5
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&tcu TCU_CLK_TIMER6
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&tcu TCU_CLK_TIMER7>;
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clock-names = "timer0", "timer1", "timer2", "timer3",
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"timer4", "timer5", "timer6", "timer7";
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};
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ost: timer@e0 {
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compatible = "ingenic,jz4770-ost";
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reg = <0xe0 0x20>;
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clocks = <&tcu TCU_CLK_OST>;
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clock-names = "ost";
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interrupts = <15>;
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};
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};
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};
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