diff options
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
19 files changed, 187 insertions, 86 deletions
diff --git a/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml index 800d511502c4..e93e935564fb 100644 --- a/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml @@ -52,33 +52,36 @@ properties: resets: maxItems: 1 -if: - properties: - compatible: - contains: - const: allwinner,sun50i-h6-pwm - -then: - properties: - clocks: - maxItems: 2 - - clock-names: - items: - - const: mod - - const: bus - - required: - - clock-names - - resets - -else: - properties: - clocks: - maxItems: 1 + +allOf: + - $ref: pwm.yaml# + + - if: + properties: + compatible: + contains: + const: allwinner,sun50i-h6-pwm + + then: + properties: + clocks: + maxItems: 2 + + clock-names: + items: + - const: mod + - const: bus + + required: + - clock-names + - resets + + else: + properties: + clocks: + maxItems: 1 required: - - "#pwm-cells" - compatible - reg - clocks diff --git a/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml b/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml index 4080e098f746..119de3d7f9dd 100644 --- a/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml @@ -28,7 +28,6 @@ properties: required: - compatible - reg - - "#pwm-cells" - clocks additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml index 4cfbffd8414a..7ab6912a845f 100644 --- a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml @@ -16,6 +16,9 @@ description: | An EC PWM node should be only found as a sub-node of the EC node (see Documentation/devicetree/bindings/mfd/google,cros-ec.yaml). +allOf: + - $ref: pwm.yaml# + properties: compatible: const: google,cros-ec-pwm @@ -39,7 +42,7 @@ examples: compatible = "google,cros-ec-spi"; reg = <0>; - cros_ec_pwm: ec-pwm { + cros_ec_pwm: pwm { compatible = "google,cros-ec-pwm"; #pwm-cells = <1>; }; diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml index 379d693889f6..b3da4e629341 100644 --- a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml @@ -9,6 +9,9 @@ title: Freescale i.MX PWM controller maintainers: - Philipp Zabel <p.zabel@pengutronix.de> +allOf: + - $ref: pwm.yaml# + properties: "#pwm-cells": description: | @@ -59,7 +62,6 @@ properties: maxItems: 1 required: - - "#pwm-cells" - compatible - reg - clocks diff --git a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml index fe9ef42544f1..8bef9dfeba9a 100644 --- a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml @@ -13,6 +13,9 @@ description: | The TPM counter and period counter are shared between multiple channels, so all channels should use same period setting. +allOf: + - $ref: pwm.yaml# + properties: "#pwm-cells": const: 3 @@ -34,7 +37,6 @@ properties: maxItems: 1 required: - - "#pwm-cells" - compatible - reg - clocks diff --git a/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml index ff6880a02ce6..ec9f6bab798c 100644 --- a/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml @@ -31,7 +31,6 @@ required: - compatible - reg - clocks - - '#pwm-cells' additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml index 11a606536169..59d7c4d864c1 100644 --- a/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml @@ -9,6 +9,9 @@ title: LGM SoC PWM fan controller maintainers: - Rahul Tanwar <rtanwar@maxlinear.com> +allOf: + - $ref: pwm.yaml# + properties: compatible: const: intel,lgm-pwm diff --git a/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml b/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml index 1d7c27be50da..0a46af240d83 100644 --- a/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml @@ -15,6 +15,9 @@ description: | Documentation/devicetree/bindings/mfd/iqs62x.yaml for further details as well as an example. +allOf: + - $ref: pwm.yaml# + properties: compatible: enum: @@ -25,7 +28,6 @@ properties: required: - compatible - - "#pwm-cells" additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml new file mode 100644 index 000000000000..a7fae1772a81 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml @@ -0,0 +1,81 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) + +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pwm/microchip,corepwm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Microchip IP corePWM controller bindings + +maintainers: + - Conor Dooley <conor.dooley@microchip.com> + +description: | + corePWM is an 16 channel pulse width modulator FPGA IP + + https://www.microsemi.com/existing-parts/parts/152118 + +allOf: + - $ref: pwm.yaml# + +properties: + compatible: + items: + - const: microchip,corepwm-rtl-v4 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + "#pwm-cells": + const: 2 + + microchip,sync-update-mask: + description: | + Depending on how the IP is instantiated, there are two modes of operation. + In synchronous mode, all channels are updated at the beginning of the PWM period, + and in asynchronous mode updates happen as the control registers are written. + A 16 bit wide "SHADOW_REG_EN" parameter of the IP core controls whether synchronous + mode is possible for each channel, and is set by the bitstream programmed to the + FPGA. If the IP core is instantiated with SHADOW_REG_ENx=1, both registers that + control the duty cycle for channel x have a second "shadow"/buffer reg synthesised. + At runtime a bit wide register exposed to APB can be used to toggle on/off + synchronised mode for all channels it has been synthesised for. + Each bit of "microchip,sync-update-mask" corresponds to a PWM channel & represents + whether synchronous mode is possible for the PWM channel. + + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + + microchip,dac-mode-mask: + description: | + Optional, per-channel Low Ripple DAC mode is possible on this IP core. It creates + a minimum period pulse train whose High/Low average is that of the chosen duty + cycle. This "DAC" will have far better bandwidth and ripple performance than the + standard PWM algorithm can achieve. A 16 bit DAC_MODE module parameter of the IP + core, set at instantiation and by the bitstream programmed to the FPGA, determines + whether a given channel operates in regular PWM or DAC mode. + Each bit corresponds to a PWM channel & represents whether DAC mode is enabled + for that channel. + + $ref: /schemas/types.yaml#/definitions/uint32 + default: 0 + +required: + - compatible + - reg + - clocks + +additionalProperties: false + +examples: + - | + pwm@41000000 { + compatible = "microchip,corepwm-rtl-v4"; + microchip,sync-update-mask = /bits/ 32 <0>; + clocks = <&clkcfg 30>; + reg = <0x41000000 0xF0>; + #pwm-cells = <2>; + }; diff --git a/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml b/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml index 8740e076061e..a34cbc13f691 100644 --- a/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml @@ -10,6 +10,9 @@ maintainers: - Shawn Guo <shawnguo@kernel.org> - Anson Huang <anson.huang@nxp.com> +allOf: + - $ref: pwm.yaml# + properties: compatible: enum: @@ -28,7 +31,6 @@ properties: required: - compatible - reg - - "#pwm-cells" - fsl,pwm-number additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt index 902b271891ae..691e58b6c223 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt +++ b/Documentation/devicetree/bindings/pwm/pwm-mtk-disp.txt @@ -6,6 +6,7 @@ Required properties: - "mediatek,mt6595-disp-pwm": found on mt6595 SoC. - "mediatek,mt8167-disp-pwm", "mediatek,mt8173-disp-pwm": found on mt8167 SoC. - "mediatek,mt8173-disp-pwm": found on mt8173 SoC. + - "mediatek,mt8183-disp-pwm": found on mt8183 SoC.$ - reg: physical base address and length of the controller's registers. - #pwm-cells: must be 2. See pwm.yaml in this directory for a description of the cell format. diff --git a/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml index 81a54a4e8e3e..a336ff9364a9 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml +++ b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml @@ -51,42 +51,44 @@ properties: required: - compatible - reg - - "#pwm-cells" - -if: - properties: - compatible: - contains: - enum: - - rockchip,rk3328-pwm - - rockchip,rv1108-pwm - -then: - properties: - clocks: - items: - - description: Used to derive the functional clock for the device. - - description: Used as the APB bus clock. - - clock-names: - items: - - const: pwm - - const: pclk - - required: - - clocks - - clock-names - -else: - properties: - clocks: - maxItems: 1 - description: - Used both to derive the functional clock - for the device and as the bus clock. - - required: - - clocks + +allOf: + - $ref: pwm.yaml# + + - if: + properties: + compatible: + contains: + enum: + - rockchip,rk3328-pwm + - rockchip,rv1108-pwm + + then: + properties: + clocks: + items: + - description: Used to derive the functional clock for the device. + - description: Used as the APB bus clock. + + clock-names: + items: + - const: pwm + - const: pclk + + required: + - clocks + - clock-names + + else: + properties: + clocks: + maxItems: 1 + description: + Used both to derive the functional clock + for the device and as the bus clock. + + required: + - clocks additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml index 188679cb8b8c..fe603fb1b2cc 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml +++ b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml @@ -86,7 +86,6 @@ required: - clocks - clock-names - compatible - - "#pwm-cells" - reg additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml index db41cd7bf150..605c1766dba8 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml +++ b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml @@ -21,6 +21,9 @@ description: https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/pwm +allOf: + - $ref: pwm.yaml# + properties: compatible: items: @@ -54,7 +57,6 @@ required: - compatible - reg - clocks - - "#pwm-cells" - interrupts additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml b/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml index ed35b6cc48d5..3840ae709bc6 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml +++ b/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml @@ -47,7 +47,6 @@ properties: required: - compatible - reg - - "#pwm-cells" - clocks - clock-names diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml index ee312cb210e6..70a8f766212e 100644 --- a/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml +++ b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml @@ -48,7 +48,6 @@ properties: required: - compatible - reg - - "#pwm-cells" - clocks - clock-names diff --git a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml index 7ea1070b4b3a..1c94acbc2b4a 100644 --- a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml +++ b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml @@ -59,21 +59,23 @@ properties: required: - compatible - reg - - '#pwm-cells' - clocks - power-domains -if: - not: - properties: - compatible: - contains: - enum: - - renesas,pwm-r8a7778 - - renesas,pwm-r8a7779 -then: - required: - - resets +allOf: + - $ref: pwm.yaml# + + - if: + not: + properties: + compatible: + contains: + enum: + - renesas,pwm-r8a7778 + - renesas,pwm-r8a7779 + then: + required: + - resets additionalProperties: false diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml index 1f5c6384182e..c6b2ab56b7fe 100644 --- a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml +++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml @@ -68,7 +68,6 @@ properties: required: - compatible - reg - - '#pwm-cells' - clocks - power-domains diff --git a/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml b/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml index d350f5edfb67..46622661e5fb 100644 --- a/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml +++ b/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml @@ -9,6 +9,9 @@ title: Toshiba Visconti PWM Controller maintainers: - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> +allOf: + - $ref: pwm.yaml# + properties: compatible: items: @@ -23,7 +26,6 @@ properties: required: - compatible - reg - - '#pwm-cells' additionalProperties: false |