From 0d03eedfea9bd5334f79792bdd033ae0ef963b90 Mon Sep 17 00:00:00 2001
From: Jukka Laitinen <jukkax@ssrc.tii.ae>
Date: Thu, 4 Apr 2024 19:16:25 +0300
Subject: [PATCH] boards/arm64/imx9/imx93-evk: Enable PWM from TPM3ch3 on
 imx93-evk pin GPIO_IO24

Signed-off-by: Jukka Laitinen <jukkax@ssrc.tii.ae>
---
 .../imx9/imx93-evk/configs/nsh/defconfig      |  2 ++
 boards/arm64/imx9/imx93-evk/include/board.h   |  4 ++++
 boards/arm64/imx9/imx93-evk/src/imx9_pwm.c    | 19 +++++++++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/boards/arm64/imx9/imx93-evk/configs/nsh/defconfig b/boards/arm64/imx9/imx93-evk/configs/nsh/defconfig
index 903e4fb67a46c..e1834dc8ed440 100644
--- a/boards/arm64/imx9/imx93-evk/configs/nsh/defconfig
+++ b/boards/arm64/imx9/imx93-evk/configs/nsh/defconfig
@@ -31,6 +31,8 @@ CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_IDLETHREAD_STACKSIZE=8192
 CONFIG_IMX9_FLEXIO1_PWM=y
 CONFIG_IMX9_GPIO_IRQ=y
+CONFIG_IMX9_TPM3_PWM=y
+CONFIG_IMX9_TPM3_PWM_CHMUX=0x00000003
 CONFIG_IMX9_UART1=y
 CONFIG_IMX9_USBDEV_USBC1=y
 CONFIG_INIT_ENTRYPOINT="nsh_main"
diff --git a/boards/arm64/imx9/imx93-evk/include/board.h b/boards/arm64/imx9/imx93-evk/include/board.h
index 0cfea9b6eafb1..bd78f1cf7906e 100644
--- a/boards/arm64/imx9/imx93-evk/include/board.h
+++ b/boards/arm64/imx9/imx93-evk/include/board.h
@@ -45,6 +45,10 @@
 #define FLEXIO1_PWM2_MUX IOMUX_CFG(IOMUXC_PAD_GPIO_IO06_FLEXIO1_FLEXIO06, IOMUXC_PAD_FSEL_SFAST | IOMUXC_PAD_DSE_X6, 0)
 #define FLEXIO1_PWM3_MUX IOMUX_CFG(IOMUXC_PAD_GPIO_IO07_FLEXIO1_FLEXIO07, IOMUXC_PAD_FSEL_SFAST | IOMUXC_PAD_DSE_X6, 0)
 
+/* TPM3 ch3 to PWM pin GPIO_IO24 muxing */
+
+#define TPM3_PWM3_MUX IOMUX_CFG(IOMUXC_PAD_GPIO_IO24_TPM3_CH3, IOMUXC_PAD_FSEL_SFAST | IOMUXC_PAD_DSE_X6, 0)
+
 /****************************************************************************
  * Public Data
  ****************************************************************************/
diff --git a/boards/arm64/imx9/imx93-evk/src/imx9_pwm.c b/boards/arm64/imx9/imx93-evk/src/imx9_pwm.c
index 152e78da90e4f..f3989167f892b 100644
--- a/boards/arm64/imx9/imx93-evk/src/imx9_pwm.c
+++ b/boards/arm64/imx9/imx93-evk/src/imx9_pwm.c
@@ -29,6 +29,7 @@
 #include <errno.h>
 
 #include "imx9_flexio_pwm.h"
+#include "imx9_tpm_pwm.h"
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -87,6 +88,24 @@ int imx9_pwm_setup(void)
     {
       ret = -ENODEV;
     }
+
+  if (ret < 0)
+    {
+      return ret;
+    }
+#endif
+
+#ifdef CONFIG_IMX9_TPM3_PWM
+  lower_half = imx9_flexio_pwm_init(PWM_TPM3);
+
+  if (lower_half)
+    {
+      ret = pwm_register("/dev/pwm2", lower_half);
+    }
+  else
+    {
+      ret = -ENODEV;
+    }
 #endif
 
   return ret;