1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/reset/stm32/stm32-reset-mp1.c b/drivers/reset/stm32/stm32-reset-mp1.c
new file mode 100644
index 00000000000..6863f6e64b7
--- /dev/null
+++ b/drivers/reset/stm32/stm32-reset-mp1.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR BSD-3-Clause
+/*
+ * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
+ * Author(s): Patrice Chotard, <patrice.chotard@foss.st.com> for STMicroelectronics.
+ */
+
+#include <dm.h>
+#include <stm32-reset-core.h>
+
+/* Reset clear offset for STM32MP RCC */
+#define RCC_CLR_OFFSET			0x4
+
+/* Offset of register without set/clear management */
+#define RCC_MP_GCR_OFFSET		0x10C
+
+/* Timeout for deassert */
+#define STM32_DEASSERT_TIMEOUT_US	10000
+
+static const struct stm32_reset_cfg *stm32_get_reset_line(struct reset_ctl *reset_ctl)
+{
+	struct stm32_reset_priv *priv = dev_get_priv(reset_ctl->dev);
+	struct stm32_reset_cfg *ptr_line = &priv->reset_line;
+	int bank = (reset_ctl->id / (sizeof(u32) * BITS_PER_BYTE)) * 4;
+	int offset = reset_ctl->id % (sizeof(u32) * BITS_PER_BYTE);
+
+	ptr_line->offset = bank;
+	ptr_line->bit_idx = offset;
+	ptr_line->set_clr = true;
+
+	if (ptr_line->offset == RCC_MP_GCR_OFFSET) {
+		ptr_line->set_clr = false;
+		ptr_line->inverted = true;
+	}
+
+	return ptr_line;
+}
+
+static const struct stm32_reset_data stm32mp1_reset_data = {
+	.get_reset_line	= stm32_get_reset_line,
+	.clear_offset	= RCC_CLR_OFFSET,
+	.reset_us	= STM32_DEASSERT_TIMEOUT_US,
+};
+
+static int stm32_reset_probe(struct udevice *dev)
+{
+	return stm32_reset_core_probe(dev, &stm32mp1_reset_data);
+}
+
+U_BOOT_DRIVER(stm32mp25_rcc_reset) = {
+	.name		= "stm32mp1_reset",
+	.id		= UCLASS_RESET,
+	.probe		= stm32_reset_probe,
+	.priv_auto	= sizeof(struct stm32_reset_priv),
+	.ops		= &stm32_reset_ops,
+};