infineon,cat1-pinctrl
Vendor: Infineon Technologies
Description
Infineon CAT1 Pinctrl container node
This is a singleton node responsible for controlling the pin function selection
and pin properties. For example, you can use this node to route
UART0 RX to a particular port/pin and enable the pull-up resistor on that
pin.
The node has the 'pinctrl' node label set in SoC's devicetree,
so you can modify it like this:
&pinctrl {
/* Your modifications go here */
};
Pin configuration can also specify the pin properties, for example the
'bias-pull-up' property. Here is a list of the supported standard pin
properties:
* bias-high-impedance
* bias-pull-up
* bias-pull-down
* drive-open-drain
* drive-open-source
* drive-push-pull (strong)
* input-enable (input-buffer)
Infineon CAT1 SoC's devicetree includes a set of pre-defined pin control
Nodes, which can be found via MPN dtsi.
For example, board cy8cproto_062_4343w uses the CY8C624ABZI_S2D44 part, so
board dts (boards\arm\cy8cproto_062_4343w\cy8cproto_062_4343w.dts) includes MPN dts
(infineon/psoc6/mpns/CY8C624ABZI_S2D44.dtsi).
Each MPN dtsi includes package dtsi (../psoc6_xx/psoc6_xx.yyy-zzz.dtsi),
For example, CY8C624ABZI_S2D44 includes "../psoc6_02/psoc6_02.124-bga.dtsi".
An example of pre-defined pin control from package dtsi (e.g. psoc6_02.124-bga.dtsi):
p3_0_scb2_uart_rx - RX pin UART2 (SCB2) which connected to port3.0
/omit-if-no-ref/ p3_0_scb2_uart_rx: p3_0_scb2_uart_rx {
pinmux = <DT_CAT1_PINMUX(3, 0, HSIOM_SEL_ACT_6)>;
};
Refer to psoc6_02.124-bga.dtsi for the list of all pre-defined pin control nodes.
NOTE1 Pre-defined pin control nodes use macro DT_CAT1_PINMUX to
initialize pinmux. DT_CAT1_PINMUX has the following input parameters
DT_CAT1_PINMUX(port_number, pin_number, hsiom),
hsiom is defined in the HSIOM_SEL_xxx macros in the
zephyr\include\zephyr\dt-bindings\pinctrl\ifx_cat1-pinctrl.h file.
You can use DT_CAT1_PINMUX to define your own pin control node:
&pinctrl {
my_uart_rx: my_uart_rx {
pinmux = <DT_CAT1_PINMUX(3, 0, HSIOM_SEL_ACT_6)>;
};
};
NOTE2 Pre-defined pin control nodes do not have bias pin configuration.
The bias configuration can be updated in board-pinctrl.dtsi
&pinctrl {
/* Configure pin control Bias mode for uart2 pins */
p3_1_scb2_uart_tx {
drive-push-pull;
};
p3_0_scb2_uart_rx {
input-enable;
};
p3_2_scb2_uart_rts {
drive-push-pull;
};
p3_3_scb2_uart_cts {
input-enable;
};
};
An example of the usage of pre-defined pin control nodes in your board's DTS file:
&uart5 {
pinctrl-0 = <&p5_1_scb5_uart_tx &p5_0_scb5_uart_rx>;
pinctrl-names = "default";
};
/* Configure pin control bias mode for uart5 pins */
&p5_1_scb5_uart_tx {
drive-push-pull;
};
&p5_0_scb5_uart_rx {
input-enable;
};
Properties
Top level properties
These property descriptions apply to “infineon,cat1-pinctrl” nodes themselves. This page also describes child node properties in the following sections.
Node specific properties
Properties not inherited from the base binding file.
(None)
Deprecated node specific properties
Deprecated properties not inherited from the base binding file.
(None)
Base properties
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 “infineon,cat1-pinctrl” compatible.
Name |
Type |
Details |
|---|---|---|
|
|
indicates the operational status of a device
Legal values: See Important properties for more information. |
|
|
compatible strings
This property is required. See Important properties for more information. |
|
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register space
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. |
|
|
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.
|
Child node properties
Name |
Type |
Details |
|---|---|---|
|
|
Encodes port/pin and alternate function.
This property is required. |
|
|
high impedance mode ("third-state", "floating")
|
|
|
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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drive with open source (hardware OR)
|
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enable input on pin (e.g. enable an input buffer, no effect on output)
|