1 files changed, 99 insertions, 0 deletions

diff --git a/lib/chibios-contrib/ext/mcux-sdk/devices/LPC55S28/drivers/fsl_reset.c b/lib/chibios-contrib/ext/mcux-sdk/devices/LPC55S28/drivers/fsl_reset.c
new file mode 100644
index 000000000..4326e0dae
--- /dev/null
+++ b/lib/chibios-contrib/ext/mcux-sdk/devices/LPC55S28/drivers/fsl_reset.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2016, Freescale Semiconductor, Inc.
+ * Copyright 2016, NXP
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "fsl_common.h"
+#include "fsl_reset.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+/* Component ID definition, used by tools. */
+#ifndef FSL_COMPONENT_ID
+#define FSL_COMPONENT_ID "platform.drivers.reset"
+#endif
+
+/*******************************************************************************
+ * Variables
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Prototypes
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Code
+ ******************************************************************************/
+
+#if (defined(FSL_FEATURE_SOC_SYSCON_COUNT) && (FSL_FEATURE_SOC_SYSCON_COUNT > 0))
+
+/*!
+ * brief Assert reset to peripheral.
+ *
+ * Asserts reset signal to specified peripheral module.
+ *
+ * param peripheral Assert reset to this peripheral. The enum argument contains encoding of reset register
+ *                   and reset bit position in the reset register.
+ */
+void RESET_SetPeripheralReset(reset_ip_name_t peripheral)
+{
+    const uint32_t regIndex = ((uint32_t)peripheral & 0xFFFF0000u) >> 16;
+    const uint32_t bitPos   = ((uint32_t)peripheral & 0x0000FFFFu);
+    const uint32_t bitMask  = 1UL << bitPos;
+
+    assert(bitPos < 32u);
+
+    /* reset register is in SYSCON */
+    /* set bit */
+    SYSCON->PRESETCTRLSET[regIndex] = bitMask;
+    /* wait until it reads 0b1 */
+    while (0u == (SYSCON->PRESETCTRLX[regIndex] & bitMask))
+    {
+    }
+}
+
+/*!
+ * brief Clear reset to peripheral.
+ *
+ * Clears reset signal to specified peripheral module, allows it to operate.
+ *
+ * param peripheral Clear reset to this peripheral. The enum argument contains encoding of reset register
+ *                   and reset bit position in the reset register.
+ */
+void RESET_ClearPeripheralReset(reset_ip_name_t peripheral)
+{
+    const uint32_t regIndex = ((uint32_t)peripheral & 0xFFFF0000u) >> 16;
+    const uint32_t bitPos   = ((uint32_t)peripheral & 0x0000FFFFu);
+    const uint32_t bitMask  = 1UL << bitPos;
+
+    assert(bitPos < 32u);
+
+    /* reset register is in SYSCON */
+
+    /* clear bit */
+    SYSCON->PRESETCTRLCLR[regIndex] = bitMask;
+    /* wait until it reads 0b0 */
+    while (bitMask == (SYSCON->PRESETCTRLX[regIndex] & bitMask))
+    {
+    }
+}
+
+/*!
+ * brief Reset peripheral module.
+ *
+ * Reset peripheral module.
+ *
+ * param peripheral Peripheral to reset. The enum argument contains encoding of reset register
+ *                   and reset bit position in the reset register.
+ */
+void RESET_PeripheralReset(reset_ip_name_t peripheral)
+{
+    RESET_SetPeripheralReset(peripheral);
+    RESET_ClearPeripheralReset(peripheral);
+}
+
+#endif /* FSL_FEATURE_SOC_SYSCON_COUNT || FSL_FEATURE_SOC_ASYNC_SYSCON_COUNT */