Add support for PMOD_MTU3 macro to enable MTU3 node on RZ/G2UL SMARC
EVK.
The MTU3a PWM pins on PMOD0 are muxed with SPI1. Disable SPI1, when
PMOD_MTU3 macro is enabled.
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v2->v3:
* No change
v1->v2:
* No change.
---
arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts | 11 +++++++++++
.../boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi | 6 ++++++
arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi | 13 +++++++++++++
3 files changed, 30 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts
index 01483b4302c2..8e0107df2d46 100644
--- a/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a07g043u11-smarc.dts
@@ -17,6 +17,17 @@
#define SW_SW0_DEV_SEL 1
#define SW_ET0_EN_N 1
+/*
+ * To enable MTU3a PWM on PMOD0,
+ * - Set DIP-Switch SW1-3 to On position.
+ * - Set PMOD_MTU3 macro to 1.
+ */
+#define PMOD_MTU3 0
+
+#if (PMOD_MTU3 && !SW_ET0_EN_N)
+#error "Cannot set as both PMOD_MTU3 and !SW_ET0_EN_N are mutually exclusive"
+#endif
+
#include "r9a07g043u.dtsi"
#include "rzg2ul-smarc-som.dtsi"
#include "rzg2ul-smarc.dtsi"
diff --git a/arch/arm64/boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi b/arch/arm64/boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi
index 58923dc83faa..355694fe4af6 100644
--- a/arch/arm64/boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2ul-smarc-pinfunction.dtsi
@@ -50,6 +50,12 @@ i2c1_pins: i2c1 {
input-enable;
};
+ mtu3_pins: mtu3 {
+ mtu2-pwm {
+ pinmux = <RZG2L_PORT_PINMUX(4, 0, 4)>; /* MTIOC2A */
+ };
+ };
+
scif0_pins: scif0 {
pinmux = <RZG2L_PORT_PINMUX(6, 4, 6)>, /* TxD */
<RZG2L_PORT_PINMUX(6, 3, 6)>; /* RxD */
diff --git a/arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi
index 2a1331ed1a5c..8eb411aac80d 100644
--- a/arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2ul-smarc.dtsi
@@ -28,6 +28,19 @@ wm8978: codec@1a {
};
};
+#if PMOD_MTU3
+&mtu3 {
+ pinctrl-0 = <&mtu3_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
+
+&spi1 {
+ status = "disabled";
+};
+#endif
+
#if (SW_ET0_EN_N)
&ssi1 {
pinctrl-0 = <&ssi1_pins>;
--
2.25.1
