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authorArnd Bergmann <arnd@arndb.de>2022-11-23 01:00:52 +0300
committerArnd Bergmann <arnd@arndb.de>2022-11-23 01:00:58 +0300
commit83cbe78a9cdff4d64d11d8f5f96b0d8f39b9a319 (patch)
tree67f486daf6857d9d8f275e9438b3dcefc5b2cf39 /Documentation/devicetree/bindings/pwm
parent867531d95cf0100d420676017cf901d4698ef27c (diff)
parent97351cd8bea8e284cf62b4b7f35fa12059b47d7f (diff)
downloadlinux-83cbe78a9cdff4d64d11d8f5f96b0d8f39b9a319.tar.xz
Merge tag 'tegra-for-6.2-dt-bindings-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into soc/dt
dt-bindings: Changes for v6.2-rc1 New memory client IDs and IOMMU stream IDs, as well as new compatible strings are introduced to support more hardware on Tegra234. Some device tree bindings are converted to json-schema to allow formal validation. * tag 'tegra-for-6.2-dt-bindings-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux: dt-bindings: usb: tegra-xusb: Convert to json-schema dt-bindings: pwm: tegra: Convert to json-schema dt-bindings: pinctrl: tegra194: Separate instances dt-bindings: pinctrl: tegra: Convert to json-schema dt-bindings: PCI: tegra234: Add ECAM support dt-bindings: pwm: tegra: Document Tegra234 PWM dt-bindings: Add bindings for Tegra234 NVDEC dt-bindings: tegra: Update headers for Tegra234 dt-bindings: Add headers for NVDEC on Tegra234 Link: https://lore.kernel.org/r/20221121171239.2041835-4-thierry.reding@gmail.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/devicetree/bindings/pwm')
-rw-r--r--Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt77
-rw-r--r--Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml96
2 files changed, 96 insertions, 77 deletions
diff --git a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
deleted file mode 100644
index 74c41e34c3b6..000000000000
--- a/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt
+++ /dev/null
@@ -1,77 +0,0 @@
-Tegra SoC PWFM controller
-
-Required properties:
-- compatible: Must be:
- - "nvidia,tegra20-pwm": for Tegra20
- - "nvidia,tegra30-pwm", "nvidia,tegra20-pwm": for Tegra30
- - "nvidia,tegra114-pwm", "nvidia,tegra20-pwm": for Tegra114
- - "nvidia,tegra124-pwm", "nvidia,tegra20-pwm": for Tegra124
- - "nvidia,tegra132-pwm", "nvidia,tegra20-pwm": for Tegra132
- - "nvidia,tegra210-pwm", "nvidia,tegra20-pwm": for Tegra210
- - "nvidia,tegra186-pwm": for Tegra186
- - "nvidia,tegra194-pwm": for Tegra194
-- 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.
-- clocks: Must contain one entry, for the module clock.
- See ../clocks/clock-bindings.txt for details.
-- resets: Must contain an entry for each entry in reset-names.
- See ../reset/reset.txt for details.
-- reset-names: Must include the following entries:
- - pwm
-
-Optional properties:
-============================
-In some of the interface like PWM based regulator device, it is required
-to configure the pins differently in different states, especially in suspend
-state of the system. The configuration of pin is provided via the pinctrl
-DT node as detailed in the pinctrl DT binding document
- Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-
-The PWM node will have following optional properties.
-pinctrl-names: Pin state names. Must be "default" and "sleep".
-pinctrl-0: phandle for the default/active state of pin configurations.
-pinctrl-1: phandle for the sleep state of pin configurations.
-
-Example:
-
- pwm: pwm@7000a000 {
- compatible = "nvidia,tegra20-pwm";
- reg = <0x7000a000 0x100>;
- #pwm-cells = <2>;
- clocks = <&tegra_car 17>;
- resets = <&tegra_car 17>;
- reset-names = "pwm";
- };
-
-
-Example with the pin configuration for suspend and resume:
-=========================================================
-Suppose pin PE7 (On Tegra210) interfaced with the regulator device and
-it requires PWM output to be tristated when system enters suspend.
-Following will be DT binding to achieve this:
-
-#include <dt-bindings/pinctrl/pinctrl-tegra.h>
-
- pinmux@700008d4 {
- pwm_active_state: pwm_active_state {
- pe7 {
- nvidia,pins = "pe7";
- nvidia,tristate = <TEGRA_PIN_DISABLE>;
- };
- };
-
- pwm_sleep_state: pwm_sleep_state {
- pe7 {
- nvidia,pins = "pe7";
- nvidia,tristate = <TEGRA_PIN_ENABLE>;
- };
- };
- };
-
- pwm@7000a000 {
- /* Mandatory PWM properties */
- pinctrl-names = "default", "sleep";
- pinctrl-0 = <&pwm_active_state>;
- pinctrl-1 = <&pwm_sleep_state>;
- };
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 000000000000..739d3155dd32
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.yaml
@@ -0,0 +1,96 @@
+# 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:
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ 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";
+ };