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author | Philipp Zabel <p.zabel@pengutronix.de> | 2022-04-07 18:43:37 +0300 |
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committer | Philipp Zabel <p.zabel@pengutronix.de> | 2022-05-03 18:41:30 +0300 |
commit | 2ca065dc9468fa1c60ada1e8cb9c1aa866367ec7 (patch) | |
tree | 0312cb82c12187bb44c57a2977a4307f5650605d /Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml | |
parent | b550b8a451380965ecf2d0ae1e4b97f8047a8e9a (diff) | |
download | linux-2ca065dc9468fa1c60ada1e8cb9c1aa866367ec7.tar.xz |
dt-bindings: reset: st,sti-powerdown: Convert to yaml
Convert the device tree bindings for the STMicroelectronics STi
Peripheral Powerdown reset controller to YAML schema to allow
participating in DT validation.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220407154338.4190674-13-p.zabel@pengutronix.de
Diffstat (limited to 'Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml b/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml new file mode 100644 index 000000000000..d3790e602659 --- /dev/null +++ b/Documentation/devicetree/bindings/reset/st,stih407-powerdown.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/reset/st,stih407-powerdown.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics STi family Sysconfig Peripheral Powerdown Reset Controller + +maintainers: + - Srinivas Kandagatla <srinivas.kandagatla@st.com> + +description: | + This binding describes a reset controller device that is used to enable and + disable on-chip peripheral controllers such as USB and SATA, using + "powerdown" control bits found in the STi family SoC system configuration + registers. These have been grouped together into a single reset controller + device for convenience. + + The actual action taken when powerdown is asserted is hardware dependent. + However, when asserted it may not be possible to access the hardware's + registers and after an assert/deassert sequence the hardware's previous state + may no longer be valid. + +properties: + compatible: + const: st,stih407-powerdown + + '#reset-cells': + const: 1 + +required: + - compatible + - '#reset-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/reset/stih407-resets.h> + + powerdown: powerdown-controller { + compatible = "st,stih407-powerdown"; + #reset-cells = <1>; + }; + + // Specifying powerdown control of devices: + st_dwc3: dwc3 { + resets = <&powerdown STIH407_USB3_POWERDOWN>; + }; |