st,stm32f1-pinctrl
Vendor: STMicroelectronics
Description
STM32F1 Pin controller Node
Based on pincfg-node.yaml binding.
Note: `bias-disable` and `drive-push-pull` are default pin configurations.
They will be applied in case no `bias-foo` or `driver-bar` properties
are set.
Properties
Top level properties
These property descriptions apply to “st,stm32f1-pinctrl” nodes themselves. This page also describes child node properties in the following sections.
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
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Configures number of pins assigned to the SWJ debug port.
* full - Full SWJ (JTAG-DP + SW-DP).
* no-njtrst - Full SWJ (JTAG-DP + SW-DP) but without NJTRST.
Releases: PB4.
* jtag-disable - JTAG-DP Disabled and SW-DP Enabled.
Releases: PA15 PB3 PB4.
* disable - JTAG-DP Disabled and SW-DP Disabled.
Releases: PA13 PA14 PA15 PB3 PB4.
If absent, then Full SWJ (JTAG-DP + SW-DP) is used (reset state).
Default value: Legal values: |
Deprecated properties not inherited from the base binding file.
(None)
Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “st,stm32f1-pinctrl” compatible.
Name |
Type |
Details |
|---|---|---|
|
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register space
This property is required. See Important properties for more information. |
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indicates the operational status of a device
Legal values: See Important properties for more information. |
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compatible strings
This property is required. See Important properties for more information. |
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name of each register space
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interrupts for device
See Important properties for more information. |
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extended interrupt specifier for device
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name of each interrupt
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phandle to interrupt controller node
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Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
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Clock gate information
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name of each clock
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number of address cells in reg property
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number of size cells in reg property
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DMA channels specifiers
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Provided names of DMA channel specifiers
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IO channels specifiers
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Provided names of IO channel specifiers
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mailbox / IPM channels specifiers
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Provided names of mailbox / IPM channel specifiers
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Power domain specifiers
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Provided names of power domain specifiers
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Number of cells in power-domains property
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Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
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Property to identify that a device can be used as wake up source.
When this property is provided a specific flag is set into the
device that tells the system that the device is capable of
wake up the system.
Wake up capable devices are disabled (interruptions will not wake up
the system) by default but they can be enabled at runtime if necessary.
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Automatically configure the device for runtime power management after the
init function runs.
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List of power states that will disable this device power.
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Child node properties
Name |
Type |
Details |
|---|---|---|
|
|
Adapted from
https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
Integer array, represents gpio pin number and mux setting.
These defines are calculated as: ((port * 16 + line) << 8) | (function << 6) | remap)
With:
- port: The gpio port index (PA = 0, PB = 1, ..., PK = 11)
- line: The line offset within the port (PA0 = 0, PA1 = 1, ..., PA15 = 15)
- function: The configuration mode, can be:
* 0 : Alternate function output
* 1 : Input
* 2 : Analog
* 3 : GPIO output
In case selected pin function is GPIO output, pin is statically configured as
a plain output GPIO, which configuration can be set by adding 'ouptut-low' or
'output-high' properties to the pinctrl configuration. Default is output-low.
- remap: The pin remapping configuration. It allows to assign the pin
function to a different peripheral. Remain configuration can be:
* 0 : No remap
* 1 : Partial remap 1
* 2 : Partial remap 2
* 3 : Partial remap 3
* 4 : Full remap
To simplify the usage, macro is available to generate "pinmux" field.
This macro is available here:
-include/zephyr/dt-bindings/pinctrl/stm32f1-pinctrl.h
Some examples of macro usage:
GPIO A9 set as alternate with no remap
... {
pinmux = <STM32F1_PINMUX('A', 9, ALTERNATE, REMAP_NO)>;
};
GPIO A9 set as alternate with full remap
... {
pinmux = <STM32F1_PINMUX('A', 9, ALTERNATE, REMAP_FULL)>;
};
GPIO A9 set as input
... {
pinmux = <STM32F1_PINMUX('A', 9, GPIO_IN, REMAP_NO)>;
};
GPIO A9 set as output-high
... {
pinmux = <STM32F1_PINMUX('A', 9, GPIO_OUT, REMAP_NO)>;
output-high;
};
This property is required. |
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Pin output mode, maximum achievable speed. Only applies to
output mode (alternate).
Default value: Legal values: |
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disable any pin bias
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enable pull-up resistor
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enable pull-down resistor
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drive actively high and low
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drive with open drain (hardware AND)
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set the pin to output mode with low level
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set the pin to output mode with high level
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