72 lines
1.6 KiB
Plaintext
72 lines
1.6 KiB
Plaintext
NXP LPC18xx/43xx SCU pin controller Device Tree Bindings
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--------------------------------------------------------
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Required properties:
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- compatible : Should be "nxp,lpc1850-scu"
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- reg : Address and length of the register set for the device
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- clocks : Clock specifier (see clock bindings for details)
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The lpc1850-scu driver uses the generic pin multiplexing and generic pin
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configuration documented in pinctrl-bindings.txt.
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The following generic nodes are supported:
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- function
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- pins
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- bias-disable
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- bias-pull-up
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- bias-pull-down
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- drive-strength
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- input-enable
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- input-disable
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- input-schmitt-enable
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- input-schmitt-disable
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- slew-rate
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NXP specific properties:
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- nxp,gpio-pin-interrupt : Assign pin to gpio pin interrupt controller
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irq number 0 to 7. See example below.
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Not all pins support all properties so either refer to the NXP 1850/4350
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user manual or the pin table in the pinctrl-lpc18xx driver for supported
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pin properties.
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Example:
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pinctrl: pinctrl@40086000 {
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compatible = "nxp,lpc1850-scu";
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reg = <0x40086000 0x1000>;
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clocks = <&ccu1 CLK_CPU_SCU>;
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i2c0_pins: i2c0-pins {
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i2c0_pins_cfg {
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pins = "i2c0_scl", "i2c0_sda";
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function = "i2c0";
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input-enable;
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};
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};
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uart0_pins: uart0-pins {
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uart0_rx_cfg {
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pins = "pf_11";
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function = "uart0";
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bias-disable;
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input-enable;
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};
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uart0_tx_cfg {
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pins = "pf_10";
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function = "uart0";
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bias-disable;
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};
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};
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gpio_joystick_pins: gpio-joystick-pins {
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gpio_joystick_1_cfg {
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pins = "p9_0";
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function = "gpio";
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nxp,gpio-pin-interrupt = <0>;
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input-enable;
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bias-disable;
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};
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};
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};
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