356ca6ce0a
Dove pinctrl binding now requires three different reg properties. This updates corresponding binding and example accordingly. While at it, also document reg property as required for the other MVEBU SoC pinctrl nodes. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
47 lines
1.6 KiB
Plaintext
47 lines
1.6 KiB
Plaintext
* Marvell SoC pinctrl core driver for mpp
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The pinctrl driver enables Marvell SoCs to configure the multi-purpose pins
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(mpp) to a specific function. For each SoC family there is a SoC specific
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driver using this core driver.
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Please refer to pinctrl-bindings.txt in this directory for details of the
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common pinctrl bindings used by client devices, including the meaning of the
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phrase "pin configuration node".
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A Marvell SoC pin configuration node is a node of a group of pins which can
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be used for a specific device or function. Each node requires one or more
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mpp pins or group of pins and a mpp function common to all pins.
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Required properties for pinctrl driver:
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- compatible: "marvell,<soc>-pinctrl"
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Please refer to each marvell,<soc>-pinctrl.txt binding doc for supported SoCs.
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Required properties for pin configuration node:
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- marvell,pins: string array of mpp pins or group of pins to be muxed.
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- marvell,function: string representing a function to mux to for all
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marvell,pins given in this pin configuration node. The function has to be
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common for all marvell,pins. Please refer to marvell,<soc>-pinctrl.txt for
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valid pin/pin group names and available function names for each SoC.
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Examples:
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uart1: serial@12100 {
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compatible = "ns16550a";
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reg = <0x12100 0x100>;
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reg-shift = <2>;
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interrupts = <7>;
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pinctrl-0 = <&pmx_uart1_sw>;
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pinctrl-names = "default";
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};
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pinctrl: pinctrl@d0200 {
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compatible = "marvell,dove-pinctrl";
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reg = <0xd0200 0x14>, <0xd0440 0x04>, <0xd802c 0x08>;
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pmx_uart1_sw: pmx-uart1-sw {
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marvell,pins = "mpp_uart1";
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marvell,function = "uart1";
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};
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};
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