xlnx,pinctrl-zynq

Description

Xilinx Zynq-7000 SoC series pinctrl node. This node will define pin multiplexing and
configurations in groups. Each group within the pinctrl node defines the pin multiplexing and
configuration for a peripheral, and each subgroup in the pin group defines all the pins for that
peripheral with the same configuration properties. Pins are selected either by named pin groups
(e.g. groups = "uart1_10_grp") or by named pins (e.g. pins = "MIO49") or a combination of
these. The remaining properties set configuration values for those pins.

Here is an example for UART1 pins:

#include <zephyr/dt-bindings/pinctrl/pinctrl-zynq.h>

&pinctrl0 {
  pinctrl_uart1_default: uart1-default {
    mux {
      groups = "uart1_10_grp";
      function = "uart1";
    };

    conf {
      groups = "uart1_10_grp";
      slew-rate = <IO_SPEED_SLOW>;
      power-source = <IO_STANDARD_LVCMOS18>;
    };

    conf-rx {
      pins = "MIO49";
      bias-high-impedance;
    };

    conf-tx {
      pins = "MIO48";
      bias-disable;
    };
  };
};

See the Xilinx Zynq-7000 SoC Technical Reference Manual (UG585) for further details on pin
multiplexing and configuration options.

Properties

Top level properties

These property descriptions apply to “xlnx,pinctrl-zynq” nodes themselves. This page also describes child node properties in the following sections.

Properties not inherited from the base binding file.

Name	Type	Details
`syscon`	`phandle`	phandle to the System Level Control Registers (SLCR). This property is required.

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 “xlnx,pinctrl-zynq” compatible.

Name	Type	Details
`wakeup-source`	`boolean`	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.
`power-domain`	`phandle`	Power domain the device belongs to. The device will be notified when the power domain it belongs to is either suspended or resumed.
`zephyr,pm-device-runtime-auto`	`boolean`	Automatically configure the device for runtime power management after the init function runs.
`zephyr,disabling-power-states`	`phandles`	List of power states that will disable this device power.
`status`	`string`	indicates the operational status of a device Legal values: `'ok'`, `'okay'`, `'disabled'`, `'reserved'`, `'fail'`, `'fail-sss'` See Important properties for more information.
`compatible`	`string-array`	compatible strings This property is required. See Important properties for more information.
`reg`	`array`	Base address and size of the System Level Control Registers (SLCR) space. This property is required. See Important properties for more information.
`reg-names`	`string-array`	name of each register space
`interrupts`	`array`	interrupts for device See Important properties for more information.
`interrupts-extended`	`compound`	extended interrupt specifier for device
`interrupt-names`	`string-array`	name of each interrupt
`interrupt-parent`	`phandle`	phandle to interrupt controller node
`label`	`string`	Human readable string describing the device (used as device_get_binding() argument) See Important properties for more information. This property is deprecated.
`clocks`	`phandle-array`	Clock gate information
`clock-names`	`string-array`	name of each clock
`#address-cells`	`int`	number of address cells in reg property
`#size-cells`	`int`	number of size cells in reg property
`dmas`	`phandle-array`	DMA channels specifiers
`dma-names`	`string-array`	Provided names of DMA channel specifiers
`io-channels`	`phandle-array`	IO channels specifiers
`io-channel-names`	`string-array`	Provided names of IO channel specifiers
`mboxes`	`phandle-array`	mailbox / IPM channels specifiers
`mbox-names`	`string-array`	Provided names of mailbox / IPM channel specifiers
`zephyr,deferred-init`	`boolean`	Do not initialize device automatically on boot. Device should be manually initialized using device_init().

Grandchild node properties

Name	Type	Details
`bias-disable`	`boolean`	Disable any IO buffer pin bias. Clears the PULLUP and TRI_ENABLE fields in the MIO_PIN_xx SLCR register.
`bias-high-impedance`	`boolean`	Enables tri-state on IO buffer pin. Sets the TRI_ENABLE field in the MIO_PIN_xx SLCR register.
`bias-pull-up`	`boolean`	Enables pull-up on IO buffer pin. Sets the PULLUP field in the MIO_PIN_xx SLCR register.
`power-source`	`int`	IO buffer type. Sets the IO_Type field in the MIO_PIN_xx SLCR register. The IO_STANDARD_* macros are defined in pinctrl-zynq.h. 1 or IO_STANDARD_LVCMOS18 2 or IO_STANDARD_LVCMOS25 3 or IO_STANDARD_LVCMOS33 4 or IO_STANDARD_HSTL Legal values: `1`, `2`, `3`, `4`
`low-power-enable`	`boolean`	Disable HSTL input buffer to save power when it is an output-only. Applicable when power-source (IO_Type) is HSTL. Sets the DisableRcvr field in the MIO_PIN_xx SLCR register.
`low-power-disable`	`boolean`	Enable HSTL input buffer. Applicable when the power-souce (IO_Type) is HSTL. Clears the DisableRcvr field in the MIO_PIN_xx SLCR register.
`slew-rate`	`int`	IO buffer edge rate. Applicable when the power-source (IO_type) is LVCMOS18, LVCMOS25, or LVCMOS33. Sets the Speed field in the MIO_PIN_xx SLCR register. The IO_SPEED_* macros are defined in pinctrl-zynq.h. 0 or IO_SPEED_SLOW 1 or IO_SPEED_FAST Legal values: `0`, `1`
`groups`	`string-array`	Specify list of pin groups to select for this configuration node. Valid pin groups are "ethernet0_0_grp", "ethernet1_0_grp", "mdio0_0_grp," "mdio1_0_grp", "qspi0_0_grp", "qspi1_0_grp", "qspi_fbclk," "qspi_cs1_grp", "spi0_0_grp", "spi0_1_grp", "spi0_2_grp," "spi0_0_ss0", "spi0_0_ss1", "spi0_0_ss2", "spi0_1_ss0," "spi0_1_ss1", "spi0_1_ss2", "spi0_2_ss0", "spi0_2_ss1," "spi0_2_ss2", "spi1_0_grp", "spi1_1_grp", "spi1_2_grp," "spi1_3_grp", "spi1_0_ss0", "spi1_0_ss1", "spi1_0_ss2," "spi1_1_ss0", "spi1_1_ss1", "spi1_1_ss2", "spi1_2_ss0," "spi1_2_ss1", "spi1_2_ss2", "spi1_3_ss0", "spi1_3_ss1," "spi1_3_ss2", "sdio0_0_grp", "sdio0_1_grp", "sdio0_2_grp," "sdio1_0_grp", "sdio1_1_grp", "sdio1_2_grp", "sdio1_3_grp," "sdio0_emio_wp", "sdio0_emio_cd", "sdio1_emio_wp," "sdio1_emio_cd", "smc0_nor", "smc0_nor_cs1_grp," "smc0_nor_addr25_grp", "smc0_nand", "can0_0_grp", "can0_1_grp," "can0_2_grp", "can0_3_grp", "can0_4_grp", "can0_5_grp," "can0_6_grp", "can0_7_grp", "can0_8_grp", "can0_9_grp," "can0_10_grp", "can1_0_grp", "can1_1_grp", "can1_2_grp," "can1_3_grp", "can1_4_grp", "can1_5_grp", "can1_6_grp," "can1_7_grp", "can1_8_grp", "can1_9_grp", "can1_10_grp," "can1_11_grp", "uart0_0_grp", "uart0_1_grp", "uart0_2_grp," "uart0_3_grp", "uart0_4_grp", "uart0_5_grp", "uart0_6_grp," "uart0_7_grp", "uart0_8_grp", "uart0_9_grp", "uart0_10_grp," "uart1_0_grp", "uart1_1_grp", "uart1_2_grp", "uart1_3_grp," "uart1_4_grp", "uart1_5_grp", "uart1_6_grp", "uart1_7_grp," "uart1_8_grp", "uart1_9_grp", "uart1_10_grp", "uart1_11_grp," "i2c0_0_grp", "i2c0_1_grp", "i2c0_2_grp", "i2c0_3_grp," "i2c0_4_grp", "i2c0_5_grp", "i2c0_6_grp", "i2c0_7_grp," "i2c0_8_grp", "i2c0_9_grp", "i2c0_10_grp", "i2c1_0_grp," "i2c1_1_grp", "i2c1_2_grp", "i2c1_3_grp", "i2c1_4_grp," "i2c1_5_grp", "i2c1_6_grp", "i2c1_7_grp", "i2c1_8_grp," "i2c1_9_grp", "i2c1_10_grp", "ttc0_0_grp", "ttc0_1_grp," "ttc0_2_grp", "ttc1_0_grp", "ttc1_1_grp", "ttc1_2_grp," "swdt0_0_grp", "swdt0_1_grp", "swdt0_2_grp", "swdt0_3_grp," "swdt0_4_grp", "gpio0_0_grp", "gpio0_1_grp", "gpio0_2_grp," "gpio0_3_grp", "gpio0_4_grp", "gpio0_5_grp", "gpio0_6_grp," "gpio0_7_grp", "gpio0_8_grp", "gpio0_9_grp", "gpio0_10_grp," "gpio0_11_grp", "gpio0_12_grp", "gpio0_13_grp", "gpio0_14_grp," "gpio0_15_grp", "gpio0_16_grp", "gpio0_17_grp", "gpio0_18_grp," "gpio0_19_grp", "gpio0_20_grp", "gpio0_21_grp", "gpio0_22_grp," "gpio0_23_grp", "gpio0_24_grp", "gpio0_25_grp", "gpio0_26_grp," "gpio0_27_grp", "gpio0_28_grp", "gpio0_29_grp", "gpio0_30_grp," "gpio0_31_grp", "gpio0_32_grp", "gpio0_33_grp", "gpio0_34_grp," "gpio0_35_grp", "gpio0_36_grp", "gpio0_37_grp", "gpio0_38_grp," "gpio0_39_grp", "gpio0_40_grp", "gpio0_41_grp", "gpio0_42_grp," "gpio0_43_grp", "gpio0_44_grp", "gpio0_45_grp", "gpio0_46_grp," "gpio0_47_grp", "gpio0_48_grp", "gpio0_49_grp", "gpio0_50_grp," "gpio0_51_grp", "gpio0_52_grp", "gpio0_53_grp", "usb0_0_grp," "usb1_0_grp" Pin groups are combined with pin names (see pins) to form the full list of pins to select.
`pins`	`string-array`	Specify list of pin names to select for this configuration node. Valid pin names are "MIO0" to "MIO53". Pin names are combined with pin groups (see groups) to form the full list of pins to select.
`function`	`string`	Specify the alternative function to be configured for the given pin groups. Sets the L3_SEL, L2_SEL, L1_SEL, and L0_SEL fields in the MIO_PIN_xx SLCR register. Legal values: `'ethernet0'`, `'ethernet1'`, `'mdio0'`, `'mdio1'`, `'qspi0'`, `'qspi1'`, `'qspi_fbclk'`, `'qspi_cs1'`, `'spi0'`, `'spi0_ss'`, `'spi1'`, `'spi1_ss'`, `'sdio0'`, `'sdio0_pc'`, `'sdio0_cd'`, `'sdio0_wp'`, `'sdio1'`, `'sdio1_pc'`, `'sdio1_cd'`, `'sdio1_wp'`, `'smc0_nor'`, `'smc0_nor_cs1'`, `'smc0_nor_addr25'`, `'smc0_nand'`, `'can0'`, `'can1'`, `'uart0'`, `'uart1'`, `'i2c0'`, `'i2c1'`, `'ttc0'`, `'ttc1'`, `'swdt0'`, `'gpio0'`, `'usb0'`, `'usb1'`