From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
Enable I2C0 and I2C1 on the RZ/N2H evaluation board.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
.../dts/renesas/r9a09g087m44-rzn2h-evk.dts | 56 +++++++++++++++++++
1 file changed, 56 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
index f6437e82a7de..e41b687e5497 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
@@ -12,6 +12,14 @@
#include "r9a09g087m44.dtsi"
#include "rzt2h-n2h-evk-common.dtsi"
+/*
+ * I2C0 and LED8/9 share the same pins use the below
+ * macro to choose (and set approopriate DIP switches).
+ */
+#define I2C0 1
+#define LED8 (!I2C0)
+#define LED9 (!I2C0)
+
/ {
model = "Renesas RZ/N2H EVK Board based on r9a09g087m44";
compatible = "renesas,rzn2h-evk", "renesas,r9a09g087m44", "renesas,r9a09g087";
@@ -47,15 +55,19 @@ led7 {
gpios = <&pinctrl RZN2H_GPIO(14, 3) GPIO_ACTIVE_LOW>;
};
+#if LED8
led8 {
/* DSW15-8: OFF, DSW15-9: OFF, DSW15-10: ON */
gpios = <&pinctrl RZN2H_GPIO(14, 6) GPIO_ACTIVE_LOW>;
};
+#endif
+#if LED9
led9 {
/* DSW15-5: OFF, DSW16-6: ON */
gpios = <&pinctrl RZN2H_GPIO(14, 7) GPIO_ACTIVE_LOW>;
};
+#endif
led10 {
/* DSW17-3: OFF, DSW17-4: ON */
@@ -68,3 +80,47 @@ led11 {
};
};
};
+
+#if I2C0
+&i2c0 {
+ pinctrl-0 = <&i2c0_pins>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+#endif
+
+&i2c1 {
+ pinctrl-0 = <&i2c1_pins>;
+ pinctrl-names = "default";
+ clock-frequency = <400000>;
+ status = "okay";
+};
+
+&pinctrl {
+ /*
+ * I2C0 Pin Configuration:
+ * ------------------------
+ * Signal | Pin | DSW15
+ * -------|---------|--------------
+ * SCL | P14_6 | 8: OFF, 9: ON, 10: OFF
+ * SDA | P14_7 | 5: ON, 6: OFF
+ */
+ i2c0_pins: i2c0-pins {
+ pinmux = <RZN2H_PORT_PINMUX(14, 6, 0x17)>,
+ <RZN2H_PORT_PINMUX(14, 7, 0x17)>;
+ };
+
+ /*
+ * I2C1 Pin Configuration:
+ * ------------------------
+ * Signal | Pin | DSW7
+ * -------|---------|--------------
+ * SCL | P03_3 | 3: ON, 4: OFF
+ * SDA | P03_4 | 1: ON, 2: OFF
+ */
+ i2c1_pins: i2c1-pins {
+ pinmux = <RZN2H_PORT_PINMUX(3, 3, 0x17)>,
+ <RZN2H_PORT_PINMUX(3, 4, 0x17)>;
+ };
+};
--
2.50.1
