From 172af17ae4cf0cf9fd1476f56a0403816c922be0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joakim=20Nohlg=C3=A5rd?= <joakim.nohlgard@eistec.se>
Date: Sat, 30 Jun 2018 19:12:47 +0200
Subject: [PATCH] kinetis: Conditionally enable MCG
---
cpu/kinetis/Makefile.features | 1 +
cpu/kinetis/cpu.c | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/cpu/kinetis/Makefile.features b/cpu/kinetis/Makefile.features
index 2045a3cedd..d07c15f80b 100644
--- a/cpu/kinetis/Makefile.features
+++ b/cpu/kinetis/Makefile.features
@@ -1,5 +1,6 @@
FEATURES_PROVIDED += periph_cpuid
FEATURES_PROVIDED += periph_hwrng
FEATURES_PROVIDED += periph_gpio
+FEATURES_PROVIDED += periph_mcg
include $(RIOTCPU)/cortexm_common/Makefile.features
diff --git a/cpu/kinetis/cpu.c b/cpu/kinetis/cpu.c
index 2460cb7894..f5785dd8b3 100644
--- a/cpu/kinetis/cpu.c
+++ b/cpu/kinetis/cpu.c
@@ -19,7 +19,9 @@
#include "cpu.h"
#include "periph/init.h"
+#ifdef MODULE_PERIPH_MCG
#include "mcg.h"
+#endif
/**
* @brief Initialize the CPU, set IRQ priorities
@@ -33,8 +35,10 @@ void cpu_init(void)
/* Note: This register can only be written once after each reset, so we must
* enable all power modes that we wish to use. */
SMC->PMPROT |= SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK;
+#ifdef MODULE_PERIPH_MCG
/* initialize the CPU clocking provided by the MCG module */
kinetis_mcg_init();
+#endif
/* trigger static peripheral initialization */
periph_init();
}
--
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