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authorLinus Torvalds <torvalds@linux-foundation.org>2019-12-02 22:41:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-02 22:41:35 +0300
commit2c97b5ae83dca56718774e7b4bf9640f05d11867 (patch)
tree13488f899e4bc23163882aa8292c99ea394638cb /Documentation/devicetree/bindings/pwm/pwm-samsung.txt
parent8328dd2f394e48a010383af176bf55ba4be79da0 (diff)
parenta8de1304b7df30e3a14f2a8b9709bb4ff31a0385 (diff)
downloadlinux-2c97b5ae83dca56718774e7b4bf9640f05d11867.tar.xz
Merge tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree updates from Rob Herring: - DT schemas for PWM, syscon, power domains, SRAM, syscon-reboot, syscon-poweroff, renesas-irqc, simple-pm-bus, renesas-bsc, pwm-rcar, Renesas tpu, at24 eeprom, rtc-sh, Allwinner PS/2, sharp,ld-d5116z01b panel, Arm SMMU, max77650, Meson CEC, Amlogic canvas and DWC3 glue, Allwinner A10 mUSB and CAN, TI Davinci MDIO, QCom QCS404 interconnect, Unisoc/Spreadtrum SoCs and UART - Convert a bunch of Samsung bindings to DT schema - Convert a bunch of ST stm32 bindings to DT schema - Realtek and Exynos additions to Arm Mali bindings - Fix schema errors in RiscV CPU schema - Various schema fixes from improved meta-schema checks - Improve the handling of 'dma-ranges' and in particular fix DMA mask setup on PCI bridges - Fix a memory leak in add_changeset_property() and DT unit tests. - Several documentation improvements for schema validation - Rework build rules to improve schema validation errors - Color output for dtx_diff * tag 'devicetree-for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (138 commits) libfdt: define INT32_MAX and UINT32_MAX in libfdt_env.h dt-bindings: arm: Remove leftover axentia.txt of: unittest: fix memory leak in attach_node_and_children of: overlay: add_changeset_property() memory leak dt-bindings: interrupt-controller: arm,gic-v3: Add missing type to interrupt-partition-* nodes dt-bindings: firmware: ixp4xx: Drop redundant minItems/maxItems dt-bindings: power: Rename back power_domain.txt bindings to fix references dt-bindings: i2c: stm32: Migrate i2c-stm32 documentation to yaml dt-bindings: mtd: Convert stm32 fmc2-nand bindings to json-schema dt-bindings: remoteproc: convert stm32-rproc to json-schema dt-bindings: mailbox: convert stm32-ipcc to json-schema dt-bindings: mfd: Convert stm32 low power timers bindings to json-schema dt-bindings: interrupt-controller: Convert stm32-exti to json-schema dt-bindings: crypto: Convert stm32 HASH bindings to json-schema dt-bindings: rng: Convert stm32 RNG bindings to json-schema dt-bindings: pwm: Convert Samsung PWM bindings to json-schema dt-bindings: pwm: Convert PWM bindings to json-schema dt-bindings: serial: Add a new compatible string for SC9863A dt-bindings: serial: Convert sprd-uart to json-schema dt-bindings: arm: Add bindings for Unisoc SC9863A ...
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-* Samsung PWM timers
-
-Samsung SoCs contain PWM timer blocks which can be used for system clock source
-and clock event timers, as well as to drive SoC outputs with PWM signal. Each
-PWM timer block provides 5 PWM channels (not all of them can drive physical
-outputs - see SoC and board manual).
-
-Be aware that the clocksource driver supports only uniprocessor systems.
-
-Required properties:
-- compatible : should be one of following:
- samsung,s3c2410-pwm - for 16-bit timers present on S3C24xx SoCs
- samsung,s3c6400-pwm - for 32-bit timers present on S3C64xx SoCs
- samsung,s5p6440-pwm - for 32-bit timers present on S5P64x0 SoCs
- samsung,s5pc100-pwm - for 32-bit timers present on S5PC100, S5PV210,
- Exynos4210 rev0 SoCs
- samsung,exynos4210-pwm - for 32-bit timers present on Exynos4210,
- Exynos4x12, Exynos5250 and Exynos5420 SoCs
-- reg: base address and size of register area
-- interrupts: list of timer interrupts (one interrupt per timer, starting at
- timer 0)
-- clock-names: should contain all following required clock names:
- - "timers" - PWM base clock used to generate PWM signals,
- and any subset of following optional clock names:
- - "pwm-tclk0" - first external PWM clock source,
- - "pwm-tclk1" - second external PWM clock source.
- Note that not all IP variants allow using all external clock sources.
- Refer to SoC documentation to learn which clock source configurations
- are available.
-- clocks: should contain clock specifiers of all clocks, which input names
- have been specified in clock-names property, in same order.
-- #pwm-cells: should be 3. See pwm.txt in this directory for a description of
- the cells format. The only third cell flag supported by this binding is
- PWM_POLARITY_INVERTED.
-
-Optional properties:
-- samsung,pwm-outputs: list of PWM channels used as PWM outputs on particular
- platform - an array of up to 5 elements being indices of PWM channels
- (from 0 to 4), the order does not matter.
-
-Example:
- pwm@7f006000 {
- compatible = "samsung,s3c6400-pwm";
- reg = <0x7f006000 0x1000>;
- interrupt-parent = <&vic0>;
- interrupts = <23>, <24>, <25>, <27>, <28>;
- clocks = <&clock 67>;
- clock-names = "timers";
- samsung,pwm-outputs = <0>, <1>;
- #pwm-cells = <3>;
- }