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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /Documentation/devicetree/bindings/pwm
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
-rw-r--r--Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml115
-rw-r--r--Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml51
-rw-r--r--Documentation/devicetree/bindings/pwm/atmel,at91sam-pwm.yaml47
-rw-r--r--Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt29
-rw-r--r--Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml42
-rw-r--r--Documentation/devicetree/bindings/pwm/brcm,iproc-pwm.yaml45
-rw-r--r--Documentation/devicetree/bindings/pwm/brcm,kona-pwm.yaml51
-rw-r--r--Documentation/devicetree/bindings/pwm/cirrus,clps711x-pwm.txt15
-rw-r--r--Documentation/devicetree/bindings/pwm/clk-pwm.yaml46
-rw-r--r--Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml58
-rw-r--r--Documentation/devicetree/bindings/pwm/img-pwm.txt24
-rw-r--r--Documentation/devicetree/bindings/pwm/imx-pwm.yaml89
-rw-r--r--Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml57
-rw-r--r--Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml46
-rw-r--r--Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml47
-rw-r--r--Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml34
-rw-r--r--Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml35
-rw-r--r--Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt20
-rw-r--r--Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt17
-rw-r--r--Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml95
-rw-r--r--Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml78
-rw-r--r--Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml83
-rw-r--r--Documentation/devicetree/bindings/pwm/mxs-pwm.yaml45
-rw-r--r--Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml95
-rw-r--r--Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt27
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml70
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-bcm2835.yaml43
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-berlin.txt17
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt55
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-hibvt.txt23
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-lp3943.txt58
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt22
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml105
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-samsung.yaml125
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-sifive.yaml72
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-sprd.txt40
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-st.txt43
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml63
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml64
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt58
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm.txt60
-rw-r--r--Documentation/devicetree/bindings/pwm/pwm.yaml34
-rw-r--r--Documentation/devicetree/bindings/pwm/pxa-pwm.txt30
-rw-r--r--Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml98
-rw-r--r--Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml102
-rw-r--r--Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml68
-rw-r--r--Documentation/devicetree/bindings/pwm/spear-pwm.txt17
-rw-r--r--Documentation/devicetree/bindings/pwm/st,stmpe-pwm.txt18
-rw-r--r--Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml42
-rw-r--r--Documentation/devicetree/bindings/pwm/ti,twl-pwm.txt17
-rw-r--r--Documentation/devicetree/bindings/pwm/ti,twl-pwmled.txt17
-rw-r--r--Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml45
-rw-r--r--Documentation/devicetree/bindings/pwm/vt8500-pwm.txt18
53 files changed, 2715 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml
new file mode 100644
index 0000000000..66e400f2a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml
@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/allwinner,sun4i-a10-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 PWM
+
+maintainers:
+ - Chen-Yu Tsai <wens@csie.org>
+ - Maxime Ripard <mripard@kernel.org>
+
+properties:
+ "#pwm-cells":
+ const: 3
+
+ compatible:
+ oneOf:
+ - const: allwinner,sun4i-a10-pwm
+ - const: allwinner,sun5i-a10s-pwm
+ - const: allwinner,sun5i-a13-pwm
+ - const: allwinner,sun7i-a20-pwm
+ - const: allwinner,sun8i-h3-pwm
+ - items:
+ - const: allwinner,sun8i-a83t-pwm
+ - const: allwinner,sun8i-h3-pwm
+ - items:
+ - enum:
+ - allwinner,suniv-f1c100s-pwm
+ - allwinner,sun8i-v3s-pwm
+ - const: allwinner,sun7i-a20-pwm
+ - items:
+ - const: allwinner,sun50i-a64-pwm
+ - const: allwinner,sun5i-a13-pwm
+ - items:
+ - const: allwinner,sun50i-h5-pwm
+ - const: allwinner,sun5i-a13-pwm
+ - const: allwinner,sun50i-h6-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ items:
+ - description: Module Clock
+ - description: Bus Clock
+
+ # Even though it only applies to subschemas under the conditionals,
+ # not listing them here will trigger a warning because of the
+ # additionalsProperties set to false.
+ clock-names: true
+
+ resets:
+ maxItems: 1
+
+
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: allwinner,sun50i-h6-pwm
+
+ then:
+ properties:
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: mod
+ - const: bus
+
+ required:
+ - clock-names
+ - resets
+
+ else:
+ properties:
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm: pwm@1c20e00 {
+ compatible = "allwinner,sun7i-a20-pwm";
+ reg = <0x01c20e00 0xc>;
+ clocks = <&osc24M>;
+ #pwm-cells = <3>;
+ };
+
+ - |
+ #include <dt-bindings/clock/sun50i-h6-ccu.h>
+ #include <dt-bindings/reset/sun50i-h6-ccu.h>
+
+ pwm@300a000 {
+ compatible = "allwinner,sun50i-h6-pwm";
+ reg = <0x0300a000 0x400>;
+ clocks = <&osc24M>, <&ccu CLK_BUS_PWM>;
+ clock-names = "mod", "bus";
+ resets = <&ccu RST_BUS_PWM>;
+ #pwm-cells = <3>;
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
new file mode 100644
index 0000000000..142157bff0
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/apple,s5l-fpwm.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/apple,s5l-fpwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Apple FPWM controller
+
+maintainers:
+ - asahi@lists.linux.dev
+ - Sasha Finkelstein <fnkl.kernel@gmail.com>
+
+description: PWM controller used for keyboard backlight on ARM Macs
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - apple,t8103-fpwm
+ - apple,t6000-fpwm
+ - apple,t8112-fpwm
+ - const: apple,s5l-fpwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@235044000 {
+ compatible = "apple,t8103-fpwm", "apple,s5l-fpwm";
+ reg = <0x35044000 0x4000>;
+ power-domains = <&ps_fpwm1>;
+ clocks = <&clkref>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/atmel,at91sam-pwm.yaml b/Documentation/devicetree/bindings/pwm/atmel,at91sam-pwm.yaml
new file mode 100644
index 0000000000..d84268b597
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/atmel,at91sam-pwm.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/atmel,at91sam-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel/Microchip PWM controller
+
+maintainers:
+ - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - atmel,at91sam9rl-pwm
+ - atmel,sama5d3-pwm
+ - atmel,sama5d2-pwm
+ - microchip,sam9x60-pwm
+ - items:
+ - const: microchip,sama7g5-pwm
+ - const: atmel,sama5d2-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+required:
+ - compatible
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ pwm0: pwm@f8034000 {
+ compatible = "atmel,at91sam9rl-pwm";
+ reg = <0xf8034000 0x400>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt b/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt
new file mode 100644
index 0000000000..afa501bf7f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/atmel-hlcdc-pwm.txt
@@ -0,0 +1,29 @@
+Device-Tree bindings for Atmel's HLCDC (High-end LCD Controller) PWM driver
+
+The Atmel HLCDC PWM is subdevice of the HLCDC MFD device.
+See ../mfd/atmel-hlcdc.txt for more details.
+
+Required properties:
+ - compatible: value should be one of the following:
+ "atmel,hlcdc-pwm"
+ - pinctr-names: the pin control state names. Should contain "default".
+ - pinctrl-0: should contain the pinctrl states described by pinctrl
+ default.
+ - #pwm-cells: should be set to 3. This PWM chip use the default 3 cells
+ bindings defined in pwm.yaml in this directory.
+
+Example:
+
+ hlcdc: hlcdc@f0030000 {
+ compatible = "atmel,sama5d3-hlcdc";
+ reg = <0xf0030000 0x2000>;
+ clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>;
+ clock-names = "periph_clk","sys_clk", "slow_clk";
+
+ hlcdc_pwm: hlcdc-pwm {
+ compatible = "atmel,hlcdc-pwm";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcd_pwm>;
+ #pwm-cells = <3>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml b/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml
new file mode 100644
index 0000000000..119de3d7f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/brcm,bcm7038-pwm.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/brcm,bcm7038-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM7038 PWM controller (BCM7xxx Set Top Box PWM controller)
+
+maintainers:
+ - Florian Fainelli <f.fainelli@gmail.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: brcm,bcm7038-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm: pwm@f0408000 {
+ compatible = "brcm,bcm7038-pwm";
+ reg = <0xf0408000 0x28>;
+ #pwm-cells = <2>;
+ clocks = <&upg_fixed>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/brcm,iproc-pwm.yaml b/Documentation/devicetree/bindings/pwm/brcm,iproc-pwm.yaml
new file mode 100644
index 0000000000..218ab06c34
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/brcm,iproc-pwm.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/brcm,iproc-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom iProc PWM controller
+
+maintainers:
+ - Rafał Miłecki <rafal@milecki.pl>
+
+description:
+ This controller has 4 channels.
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: brcm,iproc-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ description: external clock
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+unevaluatedProperties: false
+
+required:
+ - reg
+ - clocks
+
+examples:
+ - |
+ pwm@18031000 {
+ compatible = "brcm,iproc-pwm";
+ reg = <0x18031000 0x28>;
+ clocks = <&osc>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/brcm,kona-pwm.yaml b/Documentation/devicetree/bindings/pwm/brcm,kona-pwm.yaml
new file mode 100644
index 0000000000..e86c8053b3
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/brcm,kona-pwm.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/brcm,kona-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom Kona family PWM controller
+
+description:
+ This controller has 6 channels.
+
+maintainers:
+ - Florian Fainelli <f.fainelli@gmail.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - brcm,bcm11351-pwm
+ - const: brcm,kona-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ '#pwm-cells':
+ const: 3
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/bcm281xx.h>
+
+ pwm@3e01a000 {
+ compatible = "brcm,bcm11351-pwm", "brcm,kona-pwm";
+ reg = <0x3e01a000 0xcc>;
+ clocks = <&slave_ccu BCM281XX_SLAVE_CCU_PWM>;
+ #pwm-cells = <3>;
+ };
+...
diff --git a/Documentation/devicetree/bindings/pwm/cirrus,clps711x-pwm.txt b/Documentation/devicetree/bindings/pwm/cirrus,clps711x-pwm.txt
new file mode 100644
index 0000000000..c0b2028238
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/cirrus,clps711x-pwm.txt
@@ -0,0 +1,15 @@
+* Cirris Logic CLPS711X PWM controller
+
+Required properties:
+- compatible: Shall contain "cirrus,ep7209-pwm".
+- reg: Physical base address and length of the controller's registers.
+- clocks: phandle + clock specifier pair of the PWM reference clock.
+- #pwm-cells: Should be 1. The cell specifies the index of the channel.
+
+Example:
+ pwm: pwm@80000400 {
+ compatible = "cirrus,ep7312-pwm", "cirrus,ep7209-pwm";
+ reg = <0x80000400 0x4>;
+ clocks = <&clks 8>;
+ #pwm-cells = <1>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/clk-pwm.yaml b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml
new file mode 100644
index 0000000000..ec17682915
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/clk-pwm.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/clk-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock based PWM controller
+
+maintainers:
+ - Nikita Travkin <nikita@trvn.ru>
+
+description: |
+ Some systems have clocks that can be exposed to external devices.
+ (e.g. by muxing them to GPIO pins)
+ It's often possible to control duty-cycle of such clocks which makes them
+ suitable for generating PWM signal.
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: clk-pwm
+
+ clocks:
+ description: Clock used to generate the signal.
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+unevaluatedProperties: false
+
+required:
+ - compatible
+ - clocks
+
+examples:
+ - |
+ pwm {
+ compatible = "clk-pwm";
+ #pwm-cells = <2>;
+ clocks = <&gcc 0>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pwm_clk_flash_default>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml
new file mode 100644
index 0000000000..3afe1480df
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/google,cros-ec-pwm.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/google,cros-ec-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PWM controlled by ChromeOS EC
+
+maintainers:
+ - Thierry Reding <thierry.reding@gmail.com>
+ - '"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>'
+
+description: |
+ Google's ChromeOS EC PWM is a simple PWM attached to the Embedded Controller
+ (EC) and controlled via a host-command interface.
+ 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:
+ oneOf:
+ - description: PWM controlled using EC_PWM_TYPE_GENERIC channels.
+ items:
+ - const: google,cros-ec-pwm
+ - description: PWM controlled using CROS_EC_PWM_DT_<...> types.
+ items:
+ - const: google,cros-ec-pwm-type
+
+ "#pwm-cells":
+ description: The cell specifies the PWM index.
+ const: 1
+
+required:
+ - compatible
+ - '#pwm-cells'
+
+additionalProperties: false
+
+examples:
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cros-ec@0 {
+ compatible = "google,cros-ec-spi";
+ reg = <0>;
+ interrupts = <101 0>;
+
+ cros_ec_pwm: pwm {
+ compatible = "google,cros-ec-pwm";
+ #pwm-cells = <1>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pwm/img-pwm.txt b/Documentation/devicetree/bindings/pwm/img-pwm.txt
new file mode 100644
index 0000000000..9db6de9731
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/img-pwm.txt
@@ -0,0 +1,24 @@
+*Imagination Technologies PWM DAC driver
+
+Required properties:
+ - compatible: Should be "img,pistachio-pwm"
+ - reg: Should contain physical base address and length of pwm registers.
+ - clocks: Must contain an entry for each entry in clock-names.
+ See ../clock/clock-bindings.txt for details.
+ - clock-names: Must include the following entries.
+ - pwm: PWM operating clock.
+ - sys: PWM system interface clock.
+ - #pwm-cells: Should be 2. See pwm.yaml in this directory for the
+ description of the cells format.
+ - img,cr-periph: Must contain a phandle to the peripheral control
+ syscon node which contains PWM control registers.
+
+Example:
+ pwm: pwm@18101300 {
+ compatible = "img,pistachio-pwm";
+ reg = <0x18101300 0x100>;
+ clocks = <&pwm_clk>, <&system_clk>;
+ clock-names = "pwm", "sys";
+ #pwm-cells = <2>;
+ img,cr-periph = <&cr_periph>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
new file mode 100644
index 0000000000..c01dff3b7f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/imx-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX PWM controller
+
+maintainers:
+ - Philipp Zabel <p.zabel@pengutronix.de>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ "#pwm-cells":
+ description: |
+ Should be 2 for i.MX1 and 3 for i.MX27 and newer SoCs. See pwm.yaml
+ in this directory for a description of the cells format.
+ enum:
+ - 2
+ - 3
+
+ compatible:
+ oneOf:
+ - enum:
+ - fsl,imx1-pwm
+ - fsl,imx27-pwm
+ - items:
+ - enum:
+ - fsl,imx25-pwm
+ - fsl,imx31-pwm
+ - fsl,imx50-pwm
+ - fsl,imx51-pwm
+ - fsl,imx53-pwm
+ - fsl,imx6q-pwm
+ - fsl,imx6sl-pwm
+ - fsl,imx6sll-pwm
+ - fsl,imx6sx-pwm
+ - fsl,imx6ul-pwm
+ - fsl,imx7d-pwm
+ - fsl,imx8mm-pwm
+ - fsl,imx8mn-pwm
+ - fsl,imx8mp-pwm
+ - fsl,imx8mq-pwm
+ - fsl,imx8qxp-pwm
+ - const: fsl,imx27-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: SoC PWM ipg clock
+ - description: SoC PWM per clock
+
+ clock-names:
+ items:
+ - const: ipg
+ - const: per
+
+ interrupts:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx5-clock.h>
+
+ pwm@53fb4000 {
+ #pwm-cells = <3>;
+ compatible = "fsl,imx27-pwm";
+ reg = <0x53fb4000 0x4000>;
+ clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,
+ <&clks IMX5_CLK_PWM1_HF_GATE>;
+ clock-names = "ipg", "per";
+ interrupts = <61>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml
new file mode 100644
index 0000000000..8bef9dfeba
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/imx-tpm-pwm.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/imx-tpm-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX TPM PWM controller
+
+maintainers:
+ - Anson Huang <anson.huang@nxp.com>
+
+description: |
+ The TPM counter and period counter are shared between multiple
+ channels, so all channels should use same period setting.
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ "#pwm-cells":
+ const: 3
+
+ compatible:
+ enum:
+ - fsl,imx7ulp-pwm
+
+ reg:
+ maxItems: 1
+
+ assigned-clocks:
+ maxItems: 1
+
+ assigned-clock-parents:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/imx7ulp-clock.h>
+
+ pwm@40250000 {
+ compatible = "fsl,imx7ulp-pwm";
+ reg = <0x40250000 0x1000>;
+ assigned-clocks = <&pcc2 IMX7ULP_CLK_LPTPM4>;
+ assigned-clock-parents = <&scg1 IMX7ULP_CLK_SOSC_BUS_CLK>;
+ clocks = <&pcc2 IMX7ULP_CLK_LPTPM4>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml
new file mode 100644
index 0000000000..5b18a5913e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/intel,keembay-pwm.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Intel Corporation
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/intel,keembay-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Keem Bay PWM
+
+maintainers:
+ - Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ enum:
+ - intel,keembay-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #define KEEM_BAY_A53_GPIO
+
+ pwm@203200a0 {
+ compatible = "intel,keembay-pwm";
+ reg = <0x203200a0 0xe8>;
+ clocks = <&scmi_clk KEEM_BAY_A53_GPIO>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
new file mode 100644
index 0000000000..59d7c4d864
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/intel,lgm-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LGM SoC PWM fan controller
+
+maintainers:
+ - Rahul Tanwar <rtanwar@maxlinear.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: intel,lgm-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm: pwm@e0d00000 {
+ compatible = "intel,lgm-pwm";
+ reg = <0xe0d00000 0x30>;
+ #pwm-cells = <2>;
+ clocks = <&cgu0 126>;
+ resets = <&rcu0 0x30 21>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml b/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml
new file mode 100644
index 0000000000..0a46af240d
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/iqs620a-pwm.yaml
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/iqs620a-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Azoteq IQS620A PWM Generator
+
+maintainers:
+ - Jeff LaBundy <jeff@labundy.com>
+
+description: |
+ The Azoteq IQS620A multi-function sensor generates a fixed-frequency PWM
+ output represented by a "pwm" child node from the parent MFD driver. See
+ Documentation/devicetree/bindings/mfd/iqs62x.yaml for further details as
+ well as an example.
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ enum:
+ - azoteq,iqs620a-pwm
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+
+additionalProperties: false
+
+...
diff --git a/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml b/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml
new file mode 100644
index 0000000000..981cfec53f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/kontron,sl28cpld-pwm.yaml
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/kontron,sl28cpld-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PWM driver for the sl28cpld board management controller
+
+maintainers:
+ - Michael Walle <michael@walle.cc>
+
+description: |
+ This module is part of the sl28cpld multi-function device. For more
+ details see ../mfd/kontron,sl28cpld.yaml.
+
+ The controller supports one PWM channel and supports only four distinct
+ frequencies (250Hz, 500Hz, 1kHz, 2kHz).
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: kontron,sl28cpld-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+
+additionalProperties: false
diff --git a/Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt b/Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt
new file mode 100644
index 0000000000..43d9f4f08a
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt
@@ -0,0 +1,20 @@
+* NXP LPC18xx State Configurable Timer - Pulse Width Modulator driver
+
+Required properties:
+ - compatible: Should be "nxp,lpc1850-sct-pwm"
+ - reg: Should contain physical base address and length of pwm registers.
+ - clocks: Must contain an entry for each entry in clock-names.
+ See ../clock/clock-bindings.txt for details.
+ - clock-names: Must include the following entries.
+ - pwm: PWM operating clock.
+ - #pwm-cells: Should be 3. See pwm.yaml in this directory for the description
+ of the cells format.
+
+Example:
+ pwm: pwm@40000000 {
+ compatible = "nxp,lpc1850-sct-pwm";
+ reg = <0x40000000 0x1000>;
+ clocks =<&ccu1 CLK_CPU_SCT>;
+ clock-names = "pwm";
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt
new file mode 100644
index 0000000000..74b5bc5dd1
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt
@@ -0,0 +1,17 @@
+LPC32XX PWM controller
+
+Required properties:
+- compatible: should be "nxp,lpc3220-pwm"
+- reg: physical base address and length of the controller's registers
+
+Examples:
+
+pwm@4005c000 {
+ compatible = "nxp,lpc3220-pwm";
+ reg = <0x4005c000 0x4>;
+};
+
+pwm@4005c004 {
+ compatible = "nxp,lpc3220-pwm";
+ reg = <0x4005c004 0x4>;
+};
diff --git a/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml
new file mode 100644
index 0000000000..0fbe8a6469
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/mediatek,mt2712-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek PWM Controller
+
+maintainers:
+ - John Crispin <john@phrozen.org>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - mediatek,mt2712-pwm
+ - mediatek,mt6795-pwm
+ - mediatek,mt7622-pwm
+ - mediatek,mt7623-pwm
+ - mediatek,mt7628-pwm
+ - mediatek,mt7629-pwm
+ - mediatek,mt7981-pwm
+ - mediatek,mt7986-pwm
+ - mediatek,mt8183-pwm
+ - mediatek,mt8365-pwm
+ - mediatek,mt8516-pwm
+ - items:
+ - enum:
+ - mediatek,mt8195-pwm
+ - const: mediatek,mt8183-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 2
+ maxItems: 10
+
+ clock-names:
+ description:
+ This controller needs two input clocks for its core and one
+ clock for each PWM output.
+ minItems: 2
+ items:
+ - const: top
+ - const: main
+ - const: pwm1
+ - const: pwm2
+ - const: pwm3
+ - const: pwm4
+ - const: pwm5
+ - const: pwm6
+ - const: pwm7
+ - const: pwm8
+
+required:
+ - compatible
+ - reg
+ - "#pwm-cells"
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/mt2712-clk.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ pwm0: pwm@11006000 {
+ compatible = "mediatek,mt2712-pwm";
+ reg = <0x11006000 0x1000>;
+ #pwm-cells = <2>;
+ interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&topckgen CLK_TOP_PWM_SEL>, <&pericfg CLK_PERI_PWM>,
+ <&pericfg CLK_PERI_PWM0>, <&pericfg CLK_PERI_PWM1>,
+ <&pericfg CLK_PERI_PWM2>, <&pericfg CLK_PERI_PWM3>,
+ <&pericfg CLK_PERI_PWM4>, <&pericfg CLK_PERI_PWM5>,
+ <&pericfg CLK_PERI_PWM6>, <&pericfg CLK_PERI_PWM7>;
+ clock-names = "top", "main",
+ "pwm1", "pwm2",
+ "pwm3", "pwm4",
+ "pwm5", "pwm6",
+ "pwm7", "pwm8";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
new file mode 100644
index 0000000000..153e146df7
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/mediatek,pwm-disp.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/mediatek,pwm-disp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek DISP_PWM Controller
+
+maintainers:
+ - Jitao Shi <jitao.shi@mediatek.com>
+ - Xinlei Lee <xinlei.lee@mediatek.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - mediatek,mt2701-disp-pwm
+ - mediatek,mt6595-disp-pwm
+ - mediatek,mt8173-disp-pwm
+ - mediatek,mt8183-disp-pwm
+ - items:
+ - enum:
+ - mediatek,mt6795-disp-pwm
+ - mediatek,mt8167-disp-pwm
+ - const: mediatek,mt8173-disp-pwm
+ - items:
+ - enum:
+ - mediatek,mt8186-disp-pwm
+ - mediatek,mt8188-disp-pwm
+ - mediatek,mt8192-disp-pwm
+ - mediatek,mt8195-disp-pwm
+ - const: mediatek,mt8183-disp-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: Main Clock
+ - description: Mm Clock
+
+ clock-names:
+ items:
+ - const: main
+ - const: mm
+
+required:
+ - compatible
+ - reg
+ - "#pwm-cells"
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/mt8173-clk.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ pwm0: pwm@1401e000 {
+ compatible = "mediatek,mt8173-disp-pwm";
+ reg = <0x1401e000 0x1000>;
+ #pwm-cells = <2>;
+ clocks = <&mmsys CLK_MM_DISP_PWM026M>,
+ <&mmsys CLK_MM_DISP_PWM0MM>;
+ clock-names = "main", "mm";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
new file mode 100644
index 0000000000..70d563d44c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/microchip,corepwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip IP corePWM controller
+
+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":
+ enum: [2, 3]
+ description:
+ The only flag supported by the controller is PWM_POLARITY_INVERTED.
+
+ 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.
+
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 0
+
+required:
+ - compatible
+ - reg
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@41000000 {
+ compatible = "microchip,corepwm-rtl-v4";
+ microchip,sync-update-mask = /bits/ 32 <0>;
+ clocks = <&clkcfg 30>;
+ reg = <0x41000000 0xF0>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml b/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml
new file mode 100644
index 0000000000..6ffbed204c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/mxs-pwm.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/mxs-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale MXS PWM controller
+
+maintainers:
+ - Shawn Guo <shawnguo@kernel.org>
+ - Anson Huang <anson.huang@nxp.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ enum:
+ - fsl,imx23-pwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+ fsl,pwm-number:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: u32 value representing the number of PWM devices
+
+required:
+ - compatible
+ - reg
+ - fsl,pwm-number
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@80064000 {
+ compatible = "fsl,imx23-pwm";
+ reg = <0x80064000 0x2000>;
+ #pwm-cells = <3>;
+ fsl,pwm-number = <8>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
new file mode 100644
index 0000000000..41cea49791
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nvidia,tegra20-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra PWFM controller
+
+maintainers:
+ - Thierry Reding <thierry.reding@gmail.com>
+ - Jon Hunter <jonathanh@nvidia.com>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - nvidia,tegra20-pwm
+ - nvidia,tegra186-pwm
+
+ - items:
+ - enum:
+ - nvidia,tegra30-pwm
+ - nvidia,tegra114-pwm
+ - nvidia,tegra124-pwm
+ - nvidia,tegra132-pwm
+ - nvidia,tegra210-pwm
+ - enum:
+ - nvidia,tegra20-pwm
+
+ - items:
+ - const: nvidia,tegra194-pwm
+ - const: nvidia,tegra186-pwm
+
+ - items:
+ - const: nvidia,tegra234-pwm
+ - const: nvidia,tegra194-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ items:
+ - description: module reset
+
+ reset-names:
+ items:
+ - const: pwm
+
+ "#pwm-cells":
+ const: 2
+
+ pinctrl-names:
+ items:
+ - const: default
+ - const: sleep
+
+ pinctrl-0:
+ description: configuration for the default/active state
+
+ pinctrl-1:
+ description: configuration for the sleep state
+
+ operating-points-v2: true
+
+ power-domains:
+ items:
+ - description: phandle to the core power domain
+
+allOf:
+ - $ref: pwm.yaml
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/tegra20-car.h>
+
+ pwm: pwm@7000a000 {
+ compatible = "nvidia,tegra20-pwm";
+ reg = <0x7000a000 0x100>;
+ #pwm-cells = <2>;
+ clocks = <&tegra_car TEGRA20_CLK_PWM>;
+ resets = <&tegra_car 17>;
+ reset-names = "pwm";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
new file mode 100644
index 0000000000..f21b55c957
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nxp,pca9685-pwm.txt
@@ -0,0 +1,27 @@
+NXP PCA9685 16-channel 12-bit PWM LED controller
+================================================
+
+Required properties:
+ - compatible: "nxp,pca9685-pwm"
+ - #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+ The index 16 is the ALLCALL channel, that sets all PWM channels at the same
+ time.
+
+Optional properties:
+ - invert (bool): boolean to enable inverted logic
+ - open-drain (bool): boolean to configure outputs with open-drain structure;
+ if omitted use totem-pole structure
+
+Example:
+
+For LEDs that are directly connected to the PCA, the following setting is
+applicable:
+
+pca: pca@41 {
+ compatible = "nxp,pca9685-pwm";
+ #pwm-cells = <2>;
+ reg = <0x41>;
+ invert;
+ open-drain;
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
new file mode 100644
index 0000000000..527864a4d8
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-amlogic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic PWM
+
+maintainers:
+ - Heiner Kallweit <hkallweit1@gmail.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - amlogic,meson8b-pwm
+ - amlogic,meson-gxbb-pwm
+ - amlogic,meson-gxbb-ao-pwm
+ - amlogic,meson-axg-ee-pwm
+ - amlogic,meson-axg-ao-pwm
+ - amlogic,meson-g12a-ee-pwm
+ - amlogic,meson-g12a-ao-pwm-ab
+ - amlogic,meson-g12a-ao-pwm-cd
+ - amlogic,meson-s4-pwm
+ - items:
+ - const: amlogic,meson-gx-pwm
+ - const: amlogic,meson-gxbb-pwm
+ - items:
+ - const: amlogic,meson-gx-ao-pwm
+ - const: amlogic,meson-gxbb-ao-pwm
+ - items:
+ - const: amlogic,meson8-pwm
+ - const: amlogic,meson8b-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ oneOf:
+ - items:
+ - enum: [clkin0, clkin1]
+ - items:
+ - const: clkin0
+ - const: clkin1
+
+ "#pwm-cells":
+ const: 3
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@8550 {
+ compatible = "amlogic,meson-gxbb-pwm";
+ reg = <0x08550 0x10>;
+ clocks = <&xtal>, <&xtal>;
+ clock-names = "clkin0", "clkin1";
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-bcm2835.yaml b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.yaml
new file mode 100644
index 0000000000..15e7fd98de
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-bcm2835.yaml
@@ -0,0 +1,43 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-bcm2835.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: BCM2835 PWM controller (Raspberry Pi controller)
+
+maintainers:
+ - Stefan Wahren <stefan.wahren@i2se.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: brcm,bcm2835-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - "#pwm-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm@2020c000 {
+ compatible = "brcm,bcm2835-pwm";
+ reg = <0x2020c000 0x28>;
+ clocks = <&clk_pwm>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-berlin.txt b/Documentation/devicetree/bindings/pwm/pwm-berlin.txt
new file mode 100644
index 0000000000..f01e993a49
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-berlin.txt
@@ -0,0 +1,17 @@
+Berlin PWM controller
+
+Required properties:
+- compatible: should be "marvell,berlin-pwm"
+- reg: physical base address and length of the controller's registers
+- clocks: phandle to the input clock
+- #pwm-cells: should be 3. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+
+pwm: pwm@f7f20000 {
+ compatible = "marvell,berlin-pwm";
+ reg = <0xf7f20000 0x40>;
+ clocks = <&chip_clk CLKID_CFG>;
+ #pwm-cells = <3>;
+}
diff --git a/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt
new file mode 100644
index 0000000000..36532cd5ab
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-fsl-ftm.txt
@@ -0,0 +1,55 @@
+Freescale FlexTimer Module (FTM) PWM controller
+
+The same FTM PWM device can have a different endianness on different SoCs. The
+device tree provides a property to describing this so that an operating system
+device driver can handle all variants of the device. Refer to the table below
+for the endianness of the FTM PWM block as integrated into the existing SoCs:
+
+ SoC | FTM-PWM endianness
+ --------+-------------------
+ Vybrid | LE
+ LS1 | BE
+ LS2 | LE
+
+Please see ../regmap/regmap.txt for more detail about how to specify endian
+modes in device tree.
+
+
+Required properties:
+- compatible : should be "fsl,<soc>-ftm-pwm" and one of the following
+ compatible strings:
+ - "fsl,vf610-ftm-pwm" for PWM compatible with the one integrated on VF610
+ - "fsl,imx8qm-ftm-pwm" for PWM compatible with the one integrated on i.MX8QM
+- reg: Physical base address and length of the controller's registers
+- #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of
+ the cells format.
+- clock-names: Should include the following module clock source entries:
+ "ftm_sys" (module clock, also can be used as counter clock),
+ "ftm_ext" (external counter clock),
+ "ftm_fix" (fixed counter clock),
+ "ftm_cnt_clk_en" (external and fixed counter clock enable/disable).
+- clocks: Must contain a phandle and clock specifier for each entry in
+ clock-names, please see clock/clock-bindings.txt for details of the property
+ values.
+- pinctrl-names: Must contain a "default" entry.
+- pinctrl-NNN: One property must exist for each entry in pinctrl-names.
+ See pinctrl/pinctrl-bindings.txt for details of the property values.
+- big-endian: Boolean property, required if the FTM PWM registers use a big-
+ endian rather than little-endian layout.
+
+Example:
+
+pwm0: pwm@40038000 {
+ compatible = "fsl,vf610-ftm-pwm";
+ reg = <0x40038000 0x1000>;
+ #pwm-cells = <3>;
+ clock-names = "ftm_sys", "ftm_ext",
+ "ftm_fix", "ftm_cnt_clk_en";
+ clocks = <&clks VF610_CLK_FTM0>,
+ <&clks VF610_CLK_FTM0_EXT_SEL>,
+ <&clks VF610_CLK_FTM0_FIX_SEL>,
+ <&clks VF610_CLK_FTM0_EXT_FIX_EN>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm0_1>;
+ big-endian;
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-hibvt.txt b/Documentation/devicetree/bindings/pwm/pwm-hibvt.txt
new file mode 100644
index 0000000000..54dbc2a0e6
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-hibvt.txt
@@ -0,0 +1,23 @@
+Hisilicon PWM controller
+
+Required properties:
+-compatible: should contain one SoC specific compatible string
+ The SoC specific strings supported including:
+ "hisilicon,hi3516cv300-pwm"
+ "hisilicon,hi3519v100-pwm"
+ "hisilicon,hi3559v100-shub-pwm"
+ "hisilicon,hi3559v100-pwm
+- reg: physical base address and length of the controller's registers.
+- clocks: phandle and clock specifier of the PWM reference clock.
+- resets: phandle and reset specifier for the PWM controller reset.
+- #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+ pwm: pwm@12130000 {
+ compatible = "hisilicon,hi3516cv300-pwm";
+ reg = <0x12130000 0x10000>;
+ clocks = <&crg_ctrl HI3516CV300_PWM_CLK>;
+ resets = <&crg_ctrl 0x38 0>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
new file mode 100644
index 0000000000..f214305a8f
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt
@@ -0,0 +1,58 @@
+TI/National Semiconductor LP3943 PWM controller
+
+Required properties:
+ - compatible: "ti,lp3943-pwm"
+ - #pwm-cells: Should be 2. See pwm.yaml in this directory for a
+ description of the cells format.
+ Note that this hardware limits the period length to the
+ range 6250~1600000.
+ - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM channel 0 or 1.
+ 0 = output 0
+ 1 = output 1
+ .
+ .
+ 15 = output 15
+
+Example:
+PWM 0 is for RGB LED brightness control
+PWM 1 is for brightness control of LP8557 backlight device
+
+&i2c3 {
+ lp3943@60 {
+ compatible = "ti,lp3943";
+ reg = <0x60>;
+
+ /*
+ * PWM 0 : output 8, 9 and 10
+ * PWM 1 : output 15
+ */
+ pwm3943: pwm {
+ compatible = "ti,lp3943-pwm";
+ #pwm-cells = <2>;
+ ti,pwm0 = <8 9 10>;
+ ti,pwm1 = <15>;
+ };
+ };
+
+};
+
+/* LEDs control with PWM 0 of LP3943 */
+pwmleds {
+ compatible = "pwm-leds";
+ rgb {
+ label = "indi::rgb";
+ pwms = <&pwm3943 0 10000>;
+ max-brightness = <255>;
+ };
+};
+
+&i2c4 {
+ /* Backlight control with PWM 1 of LP3943 */
+ backlight@2c {
+ compatible = "ti,lp8557";
+ reg = <0x2c>;
+
+ pwms = <&pwm3943 1 10000>;
+ pwm-names = "lp8557";
+ };
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt b/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
new file mode 100644
index 0000000000..25ecfe14c6
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-omap-dmtimer.txt
@@ -0,0 +1,22 @@
+* OMAP PWM for dual-mode timers
+
+Required properties:
+- compatible: Shall contain "ti,omap-dmtimer-pwm".
+- ti,timers: phandle to PWM capable OMAP timer. See timer/ti,timer-dm.yaml for info
+ about these timers.
+- #pwm-cells: Should be 3. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Optional properties:
+- ti,prescaler: Should be a value between 0 and 7, see the timers datasheet
+- ti,clock-source: Set dmtimer parent clock, values between 0 and 2:
+ - 0x00 - high-frequency system clock (timer_sys_ck)
+ - 0x01 - 32-kHz always-on clock (timer_32k_ck)
+ - 0x02 - external clock (timer_ext_ck, OMAP2 only)
+
+Example:
+ pwm9: dmtimer-pwm@9 {
+ compatible = "ti,omap-dmtimer-pwm";
+ ti,timers = <&timer9>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml
new file mode 100644
index 0000000000..f2d1dc7e7b
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-rockchip.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-rockchip.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip PWM controller
+
+maintainers:
+ - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+ compatible:
+ oneOf:
+ - const: rockchip,rk2928-pwm
+ - const: rockchip,rk3288-pwm
+ - const: rockchip,rk3328-pwm
+ - const: rockchip,vop-pwm
+ - items:
+ - const: rockchip,rk3036-pwm
+ - const: rockchip,rk2928-pwm
+ - items:
+ - enum:
+ - rockchip,rk3128-pwm
+ - rockchip,rk3368-pwm
+ - rockchip,rk3399-pwm
+ - rockchip,rv1108-pwm
+ - const: rockchip,rk3288-pwm
+ - items:
+ - enum:
+ - rockchip,px30-pwm
+ - rockchip,rk3308-pwm
+ - rockchip,rk3568-pwm
+ - rockchip,rk3588-pwm
+ - const: rockchip,rk3328-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ maxItems: 2
+
+ "#pwm-cells":
+ enum: [2, 3]
+ description:
+ Must be 2 (rk2928) or 3 (rk3288 and later).
+ See pwm.yaml for a description of the cell format.
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - rockchip,rk3328-pwm
+ - rockchip,rv1108-pwm
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: Used to derive the functional clock for the device.
+ - description: Used as the APB bus clock.
+
+ clock-names:
+ items:
+ - const: pwm
+ - const: pclk
+
+ required:
+ - clocks
+ - clock-names
+
+ else:
+ properties:
+ clocks:
+ maxItems: 1
+ description:
+ Used both to derive the functional clock
+ for the device and as the bus clock.
+
+ required:
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/rk3188-cru-common.h>
+ pwm0: pwm@20030000 {
+ compatible = "rockchip,rk2928-pwm";
+ reg = <0x20030000 0x10>;
+ clocks = <&cru PCLK_PWM01>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml
new file mode 100644
index 0000000000..2162f661ed
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-samsung.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-samsung.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung SoC PWM timers
+
+maintainers:
+ - Thierry Reding <thierry.reding@gmail.com>
+ - Krzysztof Kozlowski <krzk@kernel.org>
+
+description: |+
+ 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.
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - samsung,s3c2410-pwm # 16-bit, S3C24xx
+ - samsung,s3c6400-pwm # 32-bit, S3C64xx
+ - samsung,s5p6440-pwm # 32-bit, S5P64x0
+ - samsung,s5pc100-pwm # 32-bit, S5PC100, S5PV210, Exynos4210 rev0 SoCs
+ - samsung,exynos4210-pwm # 32-bit, Exynos
+ - items:
+ - enum:
+ - samsung,exynosautov9-pwm
+ - const: samsung,exynos4210-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 3
+
+ clock-names:
+ description: |
+ 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.
+ oneOf:
+ - items:
+ - const: timers
+ - items:
+ - const: timers
+ - const: pwm-tclk0
+ - items:
+ - const: timers
+ - const: pwm-tclk1
+ - items:
+ - const: timers
+ - const: pwm-tclk0
+ - const: pwm-tclk1
+
+ interrupts:
+ description:
+ One interrupt per timer, starting at timer 0. Necessary only for SoCs which
+ use PWM clocksource.
+ minItems: 1
+ maxItems: 5
+
+ "#pwm-cells":
+ description:
+ The only third cell flag supported by this binding
+ is PWM_POLARITY_INVERTED.
+ const: 3
+
+ samsung,pwm-outputs:
+ description:
+ A list of PWM channels used as PWM outputs on particular platform.
+ It is an array of up to 5 elements being indices of PWM channels
+ (from 0 to 4), the order does not matter.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ uniqueItems: true
+ items:
+ minimum: 0
+ maximum: 4
+
+required:
+ - clocks
+ - clock-names
+ - compatible
+ - reg
+
+additionalProperties: false
+
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,s3c2410-pwm
+ - samsung,s3c6400-pwm
+ - samsung,s5p6440-pwm
+ - samsung,s5pc100-pwm
+ then:
+ required:
+ - interrupts
+
+examples:
+ - |
+ pwm@7f006000 {
+ compatible = "samsung,s3c6400-pwm";
+ reg = <0x7f006000 0x1000>;
+ interrupt-parent = <&vic0>;
+ interrupts = <23>, <24>, <25>, <27>, <28>;
+ clocks = <&clock 67>;
+ clock-names = "timers";
+ samsung,pwm-outputs = <0>, <1>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
new file mode 100644
index 0000000000..bae9931289
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-sifive.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SiFive PWM controller
+
+maintainers:
+ - Paul Walmsley <paul.walmsley@sifive.com>
+
+description:
+ Unlike most other PWM controllers, the SiFive PWM controller currently
+ only supports one period for all channels in the PWM. All PWMs need to
+ run at the same period. The period also has significant restrictions on
+ the values it can achieve, which the driver rounds to the nearest
+ achievable period. PWM RTL that corresponds to the IP block version
+ numbers can be found here -
+
+ https://github.com/sifive/sifive-blocks/tree/master/src/main/scala/devices/pwm
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - sifive,fu540-c000-pwm
+ - sifive,fu740-c000-pwm
+ - const: sifive,pwm0
+ description:
+ Should be "sifive,<chip>-pwm" and "sifive,pwm<version>". Supported
+ compatible strings are "sifive,fu540-c000-pwm" and
+ "sifive,fu740-c000-pwm" for the SiFive PWM v0 as integrated onto the
+ SiFive FU540 and FU740 chip respectively, and "sifive,pwm0" for the
+ SiFive PWM v0 IP block with no chip integration tweaks.
+ Please refer to sifive-blocks-ip-versioning.txt for details.
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+ interrupts:
+ maxItems: 4
+ description:
+ Each PWM instance in FU540-C000 has 4 comparators. One interrupt per comparator.
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - interrupts
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm: pwm@10020000 {
+ compatible = "sifive,fu540-c000-pwm", "sifive,pwm0";
+ reg = <0x10020000 0x1000>;
+ clocks = <&tlclk>;
+ interrupt-parent = <&plic>;
+ interrupts = <42>, <43>, <44>, <45>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-sprd.txt b/Documentation/devicetree/bindings/pwm/pwm-sprd.txt
new file mode 100644
index 0000000000..87b206fd06
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-sprd.txt
@@ -0,0 +1,40 @@
+Spreadtrum PWM controller
+
+Spreadtrum SoCs PWM controller provides 4 PWM channels.
+
+Required properties:
+- compatible : Should be "sprd,ums512-pwm".
+- reg: Physical base address and length of the controller's registers.
+- clocks: The phandle and specifier referencing the controller's clocks.
+- clock-names: Should contain following entries:
+ "pwmn": used to derive the functional clock for PWM channel n (n range: 0 ~ 3).
+ "enablen": for PWM channel n enable clock (n range: 0 ~ 3).
+- #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Optional properties:
+- assigned-clocks: Reference to the PWM clock entries.
+- assigned-clock-parents: The phandle of the parent clock of PWM clock.
+
+Example:
+ pwms: pwm@32260000 {
+ compatible = "sprd,ums512-pwm";
+ reg = <0 0x32260000 0 0x10000>;
+ clock-names = "pwm0", "enable0",
+ "pwm1", "enable1",
+ "pwm2", "enable2",
+ "pwm3", "enable3";
+ clocks = <&aon_clk CLK_PWM0>, <&aonapb_gate CLK_PWM0_EB>,
+ <&aon_clk CLK_PWM1>, <&aonapb_gate CLK_PWM1_EB>,
+ <&aon_clk CLK_PWM2>, <&aonapb_gate CLK_PWM2_EB>,
+ <&aon_clk CLK_PWM3>, <&aonapb_gate CLK_PWM3_EB>;
+ assigned-clocks = <&aon_clk CLK_PWM0>,
+ <&aon_clk CLK_PWM1>,
+ <&aon_clk CLK_PWM2>,
+ <&aon_clk CLK_PWM3>;
+ assigned-clock-parents = <&ext_26m>,
+ <&ext_26m>,
+ <&ext_26m>,
+ <&ext_26m>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-st.txt b/Documentation/devicetree/bindings/pwm/pwm-st.txt
new file mode 100644
index 0000000000..19fce774ca
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-st.txt
@@ -0,0 +1,43 @@
+STMicroelectronics PWM driver bindings
+--------------------------------------
+
+Required parameters:
+- compatible : "st,pwm"
+- #pwm-cells : Number of cells used to specify a PWM. First cell
+ specifies the per-chip index of the PWM to use and the
+ second cell is the period in nanoseconds - fixed to 2
+ for STiH41x.
+- reg : Physical base address and length of the controller's
+ registers.
+- pinctrl-names: Set to "default".
+- pinctrl-0: List of phandles pointing to pin configuration nodes
+ for PWM module.
+ For Pinctrl properties, please refer to [1].
+- clock-names: Valid entries are "pwm" and/or "capture".
+- clocks: phandle of the clock used by the PWM module.
+ For Clk properties, please refer to [2].
+- interrupts: IRQ for the Capture device
+
+Optional properties:
+- st,pwm-num-chan: Number of available PWM channels. Default is 0.
+- st,capture-num-chan: Number of available Capture channels. Default is 0.
+
+[1] Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+[2] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Example:
+
+pwm1: pwm@fe510000 {
+ compatible = "st,pwm";
+ reg = <0xfe510000 0x68>;
+ #pwm-cells = <2>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm1_chan0_default
+ &pinctrl_pwm1_chan1_default
+ &pinctrl_pwm1_chan2_default
+ &pinctrl_pwm1_chan3_default>;
+ clocks = <&clk_sysin>;
+ clock-names = "pwm";
+ st,pwm-num-chan = <4>;
+ st,capture-num-chan = <2>;
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml b/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml
new file mode 100644
index 0000000000..3840ae709b
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-tiecap.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-tiecap.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI SOC ECAP based APWM controller
+
+maintainers:
+ - Vignesh R <vigneshr@ti.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - const: ti,am3352-ecap
+ - items:
+ - enum:
+ - ti,da850-ecap
+ - ti,am4372-ecap
+ - ti,dra746-ecap
+ - ti,k2g-ecap
+ - ti,am654-ecap
+ - ti,am64-ecap
+ - const: ti,am3352-ecap
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+ description: |
+ See pwm.yaml in this directory for a description of the cells format.
+ The only third cell flag supported by this binding is PWM_POLARITY_INVERTED.
+
+ clock-names:
+ const: fck
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ ecap0: pwm@48300100 { /* ECAP on am33xx */
+ compatible = "ti,am3352-ecap";
+ #pwm-cells = <3>;
+ reg = <0x48300100 0x80>;
+ clocks = <&l4ls_gclk>;
+ clock-names = "fck";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml
new file mode 100644
index 0000000000..70a8f76621
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.yaml
@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-tiehrpwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TI SOC EHRPWM based PWM controller
+
+maintainers:
+ - Vignesh R <vigneshr@ti.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - const: ti,am3352-ehrpwm
+ - items:
+ - enum:
+ - ti,da850-ehrpwm
+ - ti,am4372-ehrpwm
+ - ti,dra746-ehrpwm
+ - ti,am654-ehrpwm
+ - ti,am64-epwm
+ - const: ti,am3352-ehrpwm
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+ description: |
+ See pwm.yaml in this directory for a description of the cells format.
+ The only third cell flag supported by this binding is PWM_POLARITY_INVERTED.
+
+ clock-names:
+ items:
+ - const: tbclk
+ - const: fck
+
+ clocks:
+ maxItems: 2
+
+ power-domains:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ ehrpwm0: pwm@48300200 { /* EHRPWM on am33xx */
+ compatible = "ti,am3352-ehrpwm";
+ #pwm-cells = <3>;
+ reg = <0x48300200 0x100>;
+ clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
+ clock-names = "tbclk", "fck";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt b/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt
new file mode 100644
index 0000000000..4633697fbd
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-tipwmss.txt
@@ -0,0 +1,58 @@
+TI SOC based PWM Subsystem
+
+Required properties:
+- compatible: Must be "ti,<soc>-pwmss".
+ for am33xx - compatible = "ti,am33xx-pwmss";
+ for am4372 - compatible = "ti,am4372-pwmss","ti,am33xx-pwmss";
+ for dra746 - compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss"
+
+- reg: physical base address and size of the registers map.
+- address-cells: Specify the number of u32 entries needed in child nodes.
+ Should set to 1.
+- size-cells: specify number of u32 entries needed to specify child nodes size
+ in reg property. Should set to 1.
+- ranges: describes the address mapping of a memory-mapped bus. Should set to
+ physical address map of child's base address, physical address within
+ parent's address space and length of the address map. For am33xx,
+ 3 set of child register maps present, ECAP register space, EQEP
+ register space, EHRPWM register space.
+
+Also child nodes should also populated under PWMSS DT node.
+
+Example:
+epwmss0: epwmss@48300000 { /* PWMSS for am33xx */
+ compatible = "ti,am33xx-pwmss";
+ reg = <0x48300000 0x10>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x48300100 0x48300100 0x80 /* ECAP */
+ 0x48300180 0x48300180 0x80 /* EQEP */
+ 0x48300200 0x48300200 0x80>; /* EHRPWM */
+
+ /* child nodes go here */
+};
+
+epwmss0: epwmss@48300000 { /* PWMSS for am4372 */
+ compatible = "ti,am4372-pwmss","ti,am33xx-pwmss"
+ reg = <0x48300000 0x10>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0x48300100 0x48300100 0x80 /* ECAP */
+ 0x48300180 0x48300180 0x80 /* EQEP */
+ 0x48300200 0x48300200 0x80>; /* EHRPWM */
+
+ /* child nodes go here */
+};
+
+epwmss0: epwmss@4843e000 { /* PWMSS for DRA7xx */
+ compatible = "ti,dra746-pwmss", "ti,am33xx-pwmss";
+ reg = <0x4843e000 0x30>;
+ ti,hwmods = "epwmss0";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* child nodes go here */
+};
diff --git a/Documentation/devicetree/bindings/pwm/pwm.txt b/Documentation/devicetree/bindings/pwm/pwm.txt
new file mode 100644
index 0000000000..084886bd72
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm.txt
@@ -0,0 +1,60 @@
+Specifying PWM information for devices
+======================================
+
+1) PWM user nodes
+-----------------
+
+PWM users should specify a list of PWM devices that they want to use
+with a property containing a 'pwm-list':
+
+ pwm-list ::= <single-pwm> [pwm-list]
+ single-pwm ::= <pwm-phandle> <pwm-specifier>
+ pwm-phandle : phandle to PWM controller node
+ pwm-specifier : array of #pwm-cells specifying the given PWM
+ (controller specific)
+
+PWM properties should be named "pwms". The exact meaning of each pwms
+property must be documented in the device tree binding for each device.
+An optional property "pwm-names" may contain a list of strings to label
+each of the PWM devices listed in the "pwms" property. If no "pwm-names"
+property is given, the name of the user node will be used as fallback.
+
+Drivers for devices that use more than a single PWM device can use the
+"pwm-names" property to map the name of the PWM device requested by the
+pwm_get() call to an index into the list given by the "pwms" property.
+
+The following example could be used to describe a PWM-based backlight
+device:
+
+ pwm: pwm {
+ #pwm-cells = <2>;
+ };
+
+ [...]
+
+ bl: backlight {
+ pwms = <&pwm 0 5000000>;
+ pwm-names = "backlight";
+ };
+
+Note that in the example above, specifying the "pwm-names" is redundant
+because the name "backlight" would be used as fallback anyway.
+
+pwm-specifier typically encodes the chip-relative PWM number and the PWM
+period in nanoseconds.
+
+Optionally, the pwm-specifier can encode a number of flags (defined in
+<dt-bindings/pwm/pwm.h>) in a third cell:
+- PWM_POLARITY_INVERTED: invert the PWM signal polarity
+
+Example with optional PWM specifier for inverse polarity
+
+ bl: backlight {
+ pwms = <&pwm 0 5000000 PWM_POLARITY_INVERTED>;
+ pwm-names = "backlight";
+ };
+
+2) PWM controller nodes
+-----------------------
+
+See pwm.yaml.
diff --git a/Documentation/devicetree/bindings/pwm/pwm.yaml b/Documentation/devicetree/bindings/pwm/pwm.yaml
new file mode 100644
index 0000000000..abd9fa8733
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm.yaml
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PWM controllers (providers)
+
+maintainers:
+ - Thierry Reding <thierry.reding@gmail.com>
+
+select: false
+
+properties:
+ $nodename:
+ pattern: "^pwm(@.*|-([0-9]|[1-9][0-9]+))?$"
+
+ "#pwm-cells":
+ description:
+ Number of cells in a PWM specifier.
+
+required:
+ - "#pwm-cells"
+
+additionalProperties: true
+
+examples:
+ - |
+ pwm: pwm@1c20e00 {
+ compatible = "allwinner,sun7i-a20-pwm";
+ reg = <0x01c20e00 0xc>;
+ clocks = <&osc24M>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
new file mode 100644
index 0000000000..5ae9f1e3c3
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
@@ -0,0 +1,30 @@
+Marvell PWM controller
+
+Required properties:
+- compatible: should be one or more of:
+ - "marvell,pxa250-pwm"
+ - "marvell,pxa270-pwm"
+ - "marvell,pxa168-pwm"
+ - "marvell,pxa910-pwm"
+- reg: Physical base address and length of the registers used by the PWM channel
+ Note that one device instance must be created for each PWM that is used, so the
+ length covers only the register window for one PWM output, not that of the
+ entire PWM controller. Currently length is 0x10 for all supported devices.
+- #pwm-cells: Should be 1. This cell is used to specify the period in
+ nanoseconds.
+
+Example PWM device node:
+
+pwm0: pwm@40b00000 {
+ compatible = "marvell,pxa250-pwm";
+ reg = <0x40b00000 0x10>;
+ #pwm-cells = <1>;
+};
+
+Example PWM client node:
+
+backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm0 5000000>;
+ ...
+}
diff --git a/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml
new file mode 100644
index 0000000000..6b6a302a17
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/renesas,pwm-rcar.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/renesas,pwm-rcar.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car PWM Timer Controller
+
+maintainers:
+ - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,pwm-r8a7742 # RZ/G1H
+ - renesas,pwm-r8a7743 # RZ/G1M
+ - renesas,pwm-r8a7744 # RZ/G1N
+ - renesas,pwm-r8a7745 # RZ/G1E
+ - renesas,pwm-r8a77470 # RZ/G1C
+ - renesas,pwm-r8a774a1 # RZ/G2M
+ - renesas,pwm-r8a774b1 # RZ/G2N
+ - renesas,pwm-r8a774c0 # RZ/G2E
+ - renesas,pwm-r8a774e1 # RZ/G2H
+ - renesas,pwm-r8a7778 # R-Car M1A
+ - renesas,pwm-r8a7779 # R-Car H1
+ - renesas,pwm-r8a7790 # R-Car H2
+ - renesas,pwm-r8a7791 # R-Car M2-W
+ - renesas,pwm-r8a7794 # R-Car E2
+ - renesas,pwm-r8a7795 # R-Car H3
+ - renesas,pwm-r8a7796 # R-Car M3-W
+ - renesas,pwm-r8a77961 # R-Car M3-W+
+ - renesas,pwm-r8a77965 # R-Car M3-N
+ - renesas,pwm-r8a77970 # R-Car V3M
+ - renesas,pwm-r8a77980 # R-Car V3H
+ - renesas,pwm-r8a77990 # R-Car E3
+ - renesas,pwm-r8a77995 # R-Car D3
+ - renesas,pwm-r8a779a0 # R-Car V3U
+ - renesas,pwm-r8a779g0 # R-Car V4H
+ - const: renesas,pwm-rcar
+
+ reg:
+ # base address and length of the registers block for the PWM.
+ maxItems: 1
+
+ '#pwm-cells':
+ # should be 2. See pwm.yaml in this directory for a description of
+ # the cells format.
+ const: 2
+
+ clocks:
+ # clock phandle and specifier pair.
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - power-domains
+
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,pwm-r8a7778
+ - renesas,pwm-r8a7779
+ then:
+ required:
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7743-cpg-mssr.h>
+ #include <dt-bindings/power/r8a7743-sysc.h>
+
+ pwm0: pwm@e6e30000 {
+ compatible = "renesas,pwm-r8a7743", "renesas,pwm-rcar";
+ reg = <0xe6e30000 0x8>;
+ clocks = <&cpg CPG_MOD 523>;
+ power-domains = <&sysc R8A7743_PD_ALWAYS_ON>;
+ resets = <&cpg 523>;
+ #pwm-cells = <2>;
+ pinctrl-0 = <&pwm0_pins>;
+ pinctrl-names = "default";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
new file mode 100644
index 0000000000..a3e52b22dd
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/renesas,tpu-pwm.yaml
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/renesas,tpu-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas R-Car Timer Pulse Unit PWM Controller
+
+maintainers:
+ - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
+
+select:
+ properties:
+ compatible:
+ contains:
+ const: renesas,tpu
+ required:
+ - compatible
+ - '#pwm-cells'
+
+properties:
+ compatible:
+ items:
+ - enum:
+ - renesas,tpu-r8a73a4 # R-Mobile APE6
+ - renesas,tpu-r8a7740 # R-Mobile A1
+ - renesas,tpu-r8a7742 # RZ/G1H
+ - renesas,tpu-r8a7743 # RZ/G1M
+ - renesas,tpu-r8a7744 # RZ/G1N
+ - renesas,tpu-r8a7745 # RZ/G1E
+ - renesas,tpu-r8a7790 # R-Car H2
+ - renesas,tpu-r8a7791 # R-Car M2-W
+ - renesas,tpu-r8a7792 # R-Car V2H
+ - renesas,tpu-r8a7793 # R-Car M2-N
+ - renesas,tpu-r8a7794 # R-Car E2
+ - renesas,tpu-r8a7795 # R-Car H3
+ - renesas,tpu-r8a7796 # R-Car M3-W
+ - renesas,tpu-r8a77961 # R-Car M3-W+
+ - renesas,tpu-r8a77965 # R-Car M3-N
+ - renesas,tpu-r8a77970 # R-Car V3M
+ - renesas,tpu-r8a77980 # R-Car V3H
+ - renesas,tpu-r8a779a0 # R-Car V3U
+ - renesas,tpu-r8a779g0 # R-Car V4H
+ - const: renesas,tpu
+
+ reg:
+ # Base address and length of each memory resource used by the PWM
+ # controller hardware module.
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ '#pwm-cells':
+ # should be 3. See pwm.yaml in this directory for a description of
+ # the cells format. The only third cell flag supported by this binding is
+ # PWM_POLARITY_INVERTED.
+ const: 3
+
+ clocks:
+ maxItems: 1
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - power-domains
+
+allOf:
+ - $ref: pwm.yaml#
+
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,tpu-r8a73a4
+ - renesas,tpu-r8a7740
+ then:
+ required:
+ - resets
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7740-clock.h>
+
+ tpu: pwm@e6600000 {
+ compatible = "renesas,tpu-r8a7740", "renesas,tpu";
+ reg = <0xe6600000 0x148>;
+ clocks = <&mstp3_clks R8A7740_CLK_TPU0>;
+ power-domains = <&pd_a3sp>;
+ #pwm-cells = <3>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
new file mode 100644
index 0000000000..4d0b596444
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/snps,dw-apb-timers-pwm2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys DW-APB timers PWM controller
+
+maintainers:
+ - Ben Dooks <ben.dooks@sifive.com>
+
+description:
+ This describes the DesignWare APB timers module when used in the PWM
+ mode. The IP core can be generated with various options which can
+ control the functionality, the number of PWMs available and other
+ internal controls the designer requires.
+
+ The IP block has a version register so this can be used for detection
+ instead of having to encode the IP version number in the device tree
+ compatible.
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: snps,dw-apb-timers-pwm2
+
+ reg:
+ maxItems: 1
+
+ "#pwm-cells":
+ const: 3
+
+ clocks:
+ items:
+ - description: Interface bus clock
+ - description: PWM reference clock
+
+ clock-names:
+ items:
+ - const: bus
+ - const: timer
+
+ snps,pwm-number:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: The number of PWM channels configured for this instance
+ enum: [1, 2, 3, 4, 5, 6, 7, 8]
+
+required:
+ - compatible
+ - reg
+ - "#pwm-cells"
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ - |
+ pwm: pwm@180000 {
+ compatible = "snps,dw-apb-timers-pwm2";
+ reg = <0x180000 0x200>;
+ #pwm-cells = <3>;
+ clocks = <&bus>, <&timer>;
+ clock-names = "bus", "timer";
+ };
diff --git a/Documentation/devicetree/bindings/pwm/spear-pwm.txt b/Documentation/devicetree/bindings/pwm/spear-pwm.txt
new file mode 100644
index 0000000000..95894128b6
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/spear-pwm.txt
@@ -0,0 +1,17 @@
+== ST SPEAr SoC PWM controller ==
+
+Required properties:
+- compatible: should be one of:
+ - "st,spear320-pwm"
+ - "st,spear1340-pwm"
+- reg: physical base address and length of the controller's registers
+- #pwm-cells: should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+
+ pwm: pwm@a8000000 {
+ compatible ="st,spear320-pwm";
+ reg = <0xa8000000 0x1000>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/st,stmpe-pwm.txt b/Documentation/devicetree/bindings/pwm/st,stmpe-pwm.txt
new file mode 100644
index 0000000000..f401316e02
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/st,stmpe-pwm.txt
@@ -0,0 +1,18 @@
+== ST STMPE PWM controller ==
+
+This is a PWM block embedded in the ST Microelectronics STMPE
+(ST Multi-Purpose Expander) chips. The PWM is registered as a
+subdevices of the STMPE MFD device.
+
+Required properties:
+- compatible: should be:
+ - "st,stmpe-pwm"
+- #pwm-cells: should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+
+pwm0: pwm {
+ compatible = "st,stmpe-pwm";
+ #pwm-cells = <2>;
+};
diff --git a/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
new file mode 100644
index 0000000000..d4fc9e8db1
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/sunplus,sp7021-pwm.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) Sunplus Co., Ltd. 2021
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/sunplus,sp7021-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sunplus SoC SP7021 PWM Controller
+
+maintainers:
+ - Hammer Hsieh <hammerh0314@gmail.com>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ const: sunplus,sp7021-pwm
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ '#pwm-cells':
+ const: 2
+
+unevaluatedProperties: false
+
+required:
+ - reg
+ - clocks
+
+examples:
+ - |
+ pwm: pwm@9c007a00 {
+ compatible = "sunplus,sp7021-pwm";
+ reg = <0x9c007a00 0x80>;
+ clocks = <&clkc 0xa2>;
+ #pwm-cells = <2>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/ti,twl-pwm.txt b/Documentation/devicetree/bindings/pwm/ti,twl-pwm.txt
new file mode 100644
index 0000000000..d97ca1964e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/ti,twl-pwm.txt
@@ -0,0 +1,17 @@
+Texas Instruments TWL series PWM drivers
+
+Supported PWMs:
+On TWL4030 series: PWM1 and PWM2
+On TWL6030 series: PWM0 and PWM1
+
+Required properties:
+- compatible: "ti,twl4030-pwm" or "ti,twl6030-pwm"
+- #pwm-cells: should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+
+twl_pwm: pwm {
+ compatible = "ti,twl6030-pwm";
+ #pwm-cells = <2>;
+};
diff --git a/Documentation/devicetree/bindings/pwm/ti,twl-pwmled.txt b/Documentation/devicetree/bindings/pwm/ti,twl-pwmled.txt
new file mode 100644
index 0000000000..31ca1b032e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/ti,twl-pwmled.txt
@@ -0,0 +1,17 @@
+Texas Instruments TWL series PWM drivers connected to LED terminals
+
+Supported PWMs:
+On TWL4030 series: PWMA and PWMB (connected to LEDA and LEDB terminals)
+On TWL6030 series: LED PWM (mainly used as charging indicator LED)
+
+Required properties:
+- compatible: "ti,twl4030-pwmled" or "ti,twl6030-pwmled"
+- #pwm-cells: should be 2. See pwm.yaml in this directory for a description of
+ the cells format.
+
+Example:
+
+twl_pwmled: pwmled {
+ compatible = "ti,twl6030-pwmled";
+ #pwm-cells = <2>;
+};
diff --git a/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml b/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml
new file mode 100644
index 0000000000..46622661e5
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/toshiba,pwm-visconti.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/toshiba,pwm-visconti.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Toshiba Visconti PWM Controller
+
+maintainers:
+ - Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ items:
+ - const: toshiba,visconti-pwm
+
+ reg:
+ maxItems: 1
+
+ '#pwm-cells':
+ const: 2
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ pwm: pwm@241c0000 {
+ compatible = "toshiba,visconti-pwm";
+ reg = <0 0x241c0000 0 0x1000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pwm_mux>;
+ #pwm-cells = <2>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt b/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt
new file mode 100644
index 0000000000..4fba93ce19
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/vt8500-pwm.txt
@@ -0,0 +1,18 @@
+VIA/Wondermedia VT8500/WM8xxx series SoC PWM controller
+
+Required properties:
+- compatible: should be "via,vt8500-pwm"
+- reg: physical base address and length of the controller's registers
+- #pwm-cells: should be 3. See pwm.yaml in this directory for a description of
+ the cells format. The only third cell flag supported by this binding is
+ PWM_POLARITY_INVERTED.
+- clocks: phandle to the PWM source clock
+
+Example:
+
+pwm1: pwm@d8220000 {
+ #pwm-cells = <3>;
+ compatible = "via,vt8500-pwm";
+ reg = <0xd8220000 0x1000>;
+ clocks = <&clkpwm>;
+};