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- Binding for Xilinx Zynq Pinctrl
-
-Required properties:
-- compatible: "xlnx,zynq-pinctrl"
-- syscon: phandle to SLCR
-- reg: Offset and length of pinctrl space in SLCR
-
-Please refer to pinctrl-bindings.txt in this directory for details of the
-common pinctrl bindings used by client devices, including the meaning of the
-phrase "pin configuration node".
-
-Zynq's pin configuration nodes act as a container for an arbitrary number of
-subnodes. Each of these subnodes represents some desired configuration for a
-pin, a group, or a list of pins or groups. This configuration can include the
-mux function to select on those pin(s)/group(s), and various pin configuration
-parameters, such as pull-up, slew rate, etc.
-
-Each configuration node can consist of multiple nodes describing the pinmux and
-pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
-
-The name of each subnode is not important; all subnodes should be enumerated
-and processed purely based on their content.
-
-Required properties for pinmux nodes are:
- - groups: A list of pinmux groups.
- - function: The name of a pinmux function to activate for the specified set
- of groups.
-
-Required properties for configuration nodes:
-One of:
- - pins: a list of pin names
- - groups: A list of pinmux groups.
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pinmux subnode:
- groups, function
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pinconf subnode:
- groups, pins, bias-disable, bias-high-impedance, bias-pull-up, slew-rate,
- low-power-disable, low-power-enable
-
- Valid arguments for 'slew-rate' are '0' and '1' to select between slow and fast
- respectively.
-
- Valid values for 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_2_grp,
- spi0_X_ssY (X=0..2, Y=0..2), spi1_0_grp - spi1_3_grp,
- spi1_X_ssY (X=0..3, Y=0..2), sdio0_0_grp - sdio0_2_grp,
- sdio1_0_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_10_grp, can1_0_grp - can1_11_grp, uart0_0_grp - uart0_10_grp,
- uart1_0_grp - uart1_11_grp, i2c0_0_grp - i2c0_10_grp, i2c1_0_grp - i2c1_10_grp,
- ttc0_0_grp - ttc0_2_grp, ttc1_0_grp - ttc1_2_grp, swdt0_0_grp - swdt0_4_grp,
- gpio0_0_grp - gpio0_53_grp, usb0_0_grp, usb1_0_grp
-
- Valid values for pins are:
- MIO0 - MIO53
-
- Valid values for function are:
- 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
-
-The following driver-specific properties as defined here are valid to specify in
-a pin configuration subnode:
- - io-standard: Configure the pin to use the selected IO standard according to
- this mapping:
- 1: LVCMOS18
- 2: LVCMOS25
- 3: LVCMOS33
- 4: HSTL
-
-Example:
- pinctrl0: pinctrl@700 {
- compatible = "xlnx,pinctrl-zynq";
- reg = <0x700 0x200>;
- syscon = <&slcr>;
-
- pinctrl_uart1_default: uart1-default {
- mux {
- groups = "uart1_10_grp";
- function = "uart1";
- };
-
- conf {
- groups = "uart1_10_grp";
- slew-rate = <0>;
- io-standard = <1>;
- };
-
- conf-rx {
- pins = "MIO49";
- bias-high-impedance;
- };
-
- conf-tx {
- pins = "MIO48";
- bias-disable;
- };
- };
- };