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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
parentInitial commit. (diff)
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Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+* Pin-controller driver for the Marvell Berlin SoCs
+
+Pin control registers are part of both chip controller and system
+controller register sets. Pin controller nodes should be a sub-node of
+either the chip controller or system controller node. The pins
+controlled are organized in groups, so no actual pin information is
+needed.
+
+A pin-controller node should contain subnodes representing the pin group
+configurations, one per function. Each subnode has the group name and
+the muxing function used.
+
+Be aware the Marvell Berlin datasheets use the keyword 'mode' for what
+is called a 'function' in the pin-controller subsystem.
+
+Required properties:
+- compatible: should be one of:
+ "marvell,berlin2-soc-pinctrl",
+ "marvell,berlin2-system-pinctrl",
+ "marvell,berlin2cd-soc-pinctrl",
+ "marvell,berlin2cd-system-pinctrl",
+ "marvell,berlin2q-soc-pinctrl",
+ "marvell,berlin2q-system-pinctrl",
+ "marvell,berlin4ct-avio-pinctrl",
+ "marvell,berlin4ct-soc-pinctrl",
+ "marvell,berlin4ct-system-pinctrl",
+ "syna,as370-soc-pinctrl"
+
+Required subnode-properties:
+- groups: a list of strings describing the group names.
+- function: a string describing the function used to mux the groups.
+
+Example:
+
+sys_pinctrl: pin-controller {
+ compatible = "marvell,berlin2q-system-pinctrl";
+
+ uart0_pmux: uart0-pmux {
+ groups = "GSM12";
+ function = "uart0";
+ };
+};
+
+&uart0 {
+ pinctrl-0 = <&uart0_pmux>;
+ pinctrl-names = "default";
+};