Merge branch 'master' of git://git.denx.de/u-boot-tegra

1 files changed, 72 insertions, 0 deletions

diff --git a/drivers/reset/tegra-car-reset.c b/drivers/reset/tegra-car-reset.c
new file mode 100644
index 0000000000..3147a50853
--- /dev/null
+++ b/drivers/reset/tegra-car-reset.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2016, NVIDIA CORPORATION.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <reset-uclass.h>
+#include <asm/arch/clock.h>
+#include <asm/arch-tegra/clk_rst.h>
+
+static int tegra_car_reset_request(struct reset_ctl *reset_ctl)
+{
+	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
+	      reset_ctl->dev, reset_ctl->id);
+
+	/* PERIPH_ID_COUNT varies per SoC */
+	if (reset_ctl->id >= PERIPH_ID_COUNT)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int tegra_car_reset_free(struct reset_ctl *reset_ctl)
+{
+	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
+	      reset_ctl->dev, reset_ctl->id);
+
+	return 0;
+}
+
+static int tegra_car_reset_assert(struct reset_ctl *reset_ctl)
+{
+	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
+	      reset_ctl->dev, reset_ctl->id);
+
+	reset_set_enable(reset_ctl->id, 1);
+
+	return 0;
+}
+
+static int tegra_car_reset_deassert(struct reset_ctl *reset_ctl)
+{
+	debug("%s(reset_ctl=%p) (dev=%p, id=%lu)\n", __func__, reset_ctl,
+	      reset_ctl->dev, reset_ctl->id);
+
+	reset_set_enable(reset_ctl->id, 0);
+
+	return 0;
+}
+
+struct reset_ops tegra_car_reset_ops = {
+	.request = tegra_car_reset_request,
+	.free = tegra_car_reset_free,
+	.rst_assert = tegra_car_reset_assert,
+	.rst_deassert = tegra_car_reset_deassert,
+};
+
+static int tegra_car_reset_probe(struct udevice *dev)
+{
+	debug("%s(dev=%p)\n", __func__, dev);
+
+	return 0;
+}
+
+U_BOOT_DRIVER(tegra_car_reset) = {
+	.name = "tegra_car_reset",
+	.id = UCLASS_RESET,
+	.probe = tegra_car_reset_probe,
+	.ops = &tegra_car_reset_ops,
+};