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Subject[PATCH v2 3/7] arm: dts: dt-bindings: Add Renesas RZ pinctrl header
Date
Add dt-bindings for Renesas r7s72100 pin controller header file.

Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
---
include/dt-bindings/pinctrl/r7s72100-pinctrl.h | 36 ++++++++++++++++++++++++++
1 file changed, 36 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..98852d3
--- /dev/null
+++ b/include/dt-bindings/pinctrl/r7s72100-pinctrl.h
@@ -0,0 +1,36 @@
+/*
+ * 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
+ * All of the following are mutually exclusive.
+ */
+
+/*
+ * Pin is bi-directional.
+ * Alternate function that need both input/outpu functionalities shall
+ * be configured as bidirectional.
+ * Eg. SDA/SCL pins of an I2c interface.
+ */
+#define BI_DIR (1 << 3)
+
+/*
+ * Flags used to ask 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_IN (1 << 4)
+#define SWIO_OUT (1 << 5)
+
+#endif
--
2.7.4
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