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path: root/drivers/reset/stm32/stm32-reset.c
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Diffstat (limited to 'drivers/reset/stm32/stm32-reset.c')
-rw-r--r--drivers/reset/stm32/stm32-reset.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/reset/stm32/stm32-reset.c b/drivers/reset/stm32/stm32-reset.c
new file mode 100644
index 00000000000..975f67f712a
--- /dev/null
+++ b/drivers/reset/stm32/stm32-reset.c
@@ -0,0 +1,43 @@
+// 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>
+
+/* 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;
+
+ return ptr_line;
+}
+
+static const struct stm32_reset_data stm32_reset_data = {
+ .get_reset_line = stm32_get_reset_line,
+ .reset_us = STM32_DEASSERT_TIMEOUT_US,
+};
+
+static int stm32_reset_probe(struct udevice *dev)
+{
+ return stm32_reset_core_probe(dev, &stm32_reset_data);
+}
+
+U_BOOT_DRIVER(stm32_rcc_reset) = {
+ .name = "stm32_rcc_reset",
+ .id = UCLASS_RESET,
+ .probe = stm32_reset_probe,
+ .priv_auto = sizeof(struct stm32_reset_priv),
+ .ops = &stm32_reset_ops,
+};