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-rw-r--r--Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt43
-rw-r--r--Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt27
2 files changed, 70 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
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index 000000000000..a8bb5e26019c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/berlin,pinctrl.txt
@@ -0,0 +1,43 @@
+* 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"
+
+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";
+};
diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt
new file mode 100644
index 000000000000..8bbf25d58656
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+++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx7d-pinctrl.txt
@@ -0,0 +1,27 @@
+* Freescale i.MX7 Dual IOMUX Controller
+
+Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
+and usage.
+
+Required properties:
+- compatible: "fsl,imx7d-iomuxc"
+- fsl,pins: each entry consists of 6 integers and represents the mux and config
+ setting for one pin. The first 5 integers <mux_reg conf_reg input_reg mux_val
+ input_val> are specified using a PIN_FUNC_ID macro, which can be found in
+ imx7d-pinfunc.h under device tree source folder. The last integer CONFIG is
+ the pad setting value like pull-up on this pin. Please refer to i.MX7 Dual
+ Reference Manual for detailed CONFIG settings.
+
+CONFIG bits definition:
+PAD_CTL_PUS_100K_DOWN (0 << 5)
+PAD_CTL_PUS_5K_UP (1 << 5)
+PAD_CTL_PUS_47K_UP (2 << 5)
+PAD_CTL_PUS_100K_UP (3 << 5)
+PAD_CTL_PUE (1 << 4)
+PAD_CTL_HYS (1 << 3)
+PAD_CTL_SRE_SLOW (1 << 2)
+PAD_CTL_SRE_FAST (0 << 2)
+PAD_CTL_DSE_X1 (0 << 0)
+PAD_CTL_DSE_X2 (1 << 0)
+PAD_CTL_DSE_X3 (2 << 0)
+PAD_CTL_DSE_X4 (3 << 0)