[PATCH 3/7] arm: dts: dt-bindings: Add Renesas RZ pinctrl header

[Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>]

Add dt-bindings for Renesas r7s72100 pin controller header file.

Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
---
 include/dt-bindings/pinctrl/r7s72100-pinctrl.h | 30 ++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 include/dt-bindings/pinctrl/r7s72100-pinctrl.h

diff --git a/include/dt-bindings/pinctrl/r7s72100-pinctrl.h b/include/dt-bindings/pinctrl/r7s72100-pinctrl.h
new file mode 100644
index 0000000..24759bf
--- /dev/null
+++ b/include/dt-bindings/pinctrl/r7s72100-pinctrl.h
@@ -0,0 +1,30 @@
+/*
+ * Defines macros and constants for Renesas RZ/A1 pin controller pin
+ * muxing functions.
+ */
+#ifndef __DT_BINDINGS_PINCTRL_RENESAS_RZA1_H
+#define __DT_BINDINGS_PINCTRL_RENESAS_RZA1_H
+
+#define RZA1_PINS_PER_PORT	16
+
+/* Create the pin index from it's bank and position numbers */
+#define PIN(b, p)		((b) * RZA1_PINS_PER_PORT + (p))
+
+/* Flags to apply to alternate function configuration */
+/*
+ * Pin needs input buffer enabled.
+ * This applies to pin which alternate function requires input capabilities.
+ * Eg: RX pin on a serial interface needs this flag to be set.
+ */
+#define INPUT_EN		(1 << 3)
+
+/*
+ * Let software drive the pin I/O direction overriding the alternate function
+ * configuration.
+ * Some alternate function requires software to force I/O direction of a pin,
+ * ovverriding the designated one.
+ * Reference to the HW manual to know when this flag shall be used.
+ */
+#define SWIO			(1 << 4)
+
+#endif
-- 
2.7.4

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