7e8d941567
This patch adds a pinctrl driver core for Marvell SoCs plus DT binding documentation. This core driver will be used by SoC family specific drivers, i.e. Armada XP, Armada 370, Dove, Kirkwood, aso. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Conflicts: arch/arm/Kconfig
46 lines
1.5 KiB
Text
46 lines
1.5 KiB
Text
* 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 0x20>;
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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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