From 2d32e43713165997cb5ea17ade38a6b334edf420 Mon Sep 17 00:00:00 2001
From: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
Date: Mon, 28 Oct 2019 17:56:53 -0500
Subject: [PATCH] MXRT: Update the LPTimer driver

1. Run in doze mode
2. Add implementation for free function

Signed-off-by: Mahesh Mahadevan <mahesh.mahadevan@nxp.com>
---
 .../TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c
index e4f79853e7..57001798df 100644
--- a/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c
+++ b/targets/TARGET_NXP/TARGET_MCUXpresso_MCUS/TARGET_IMX/lp_ticker.c
@@ -52,6 +52,7 @@ void lp_ticker_init(void)
         gptConfig.clockSource = kGPT_ClockSource_LowFreq;
         gptConfig.enableFreeRun = true;
         gptConfig.enableMode = false;
+        gptConfig.enableRunInDoze = true;
 
         GPT_Init(GPT2, &gptConfig);
         GPT_EnableInterrupts(GPT2, kGPT_OutputCompare1InterruptEnable);
@@ -114,7 +115,8 @@ void lp_ticker_clear_interrupt(void)
 
 void lp_ticker_free(void)
 {
-
+    GPT_DisableInterrupts(GPT2, kGPT_OutputCompare1InterruptEnable);
+    NVIC_DisableIRQ(GPT2_IRQn);
 }
 
 #endif /* DEVICE_LPTICKER */