rockchip: rk3328: add sysreset driver

Add rk3328 sysreset driver.

Signed-off-by: William Zhang <william.zhang@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/sysreset/sysreset_rk3328.c b/drivers/sysreset/sysreset_rk3328.c
new file mode 100644
index 0000000000..7b9af0925b
--- /dev/null
+++ b/drivers/sysreset/sysreset_rk3328.c
@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:	GPL-2.0
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3328.h>
+#include <asm/arch/hardware.h>
+#include <asm/io.h>
+#include <linux/err.h>
+
+int rk3328_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+	struct rk3328_cru *cru = rockchip_get_cru();
+
+	if (IS_ERR(cru))
+		return PTR_ERR(cru);
+	switch (type) {
+	case SYSRESET_WARM:
+		writel(0xeca8, &cru->glb_srst_snd_value);
+		break;
+	case SYSRESET_COLD:
+		writel(0xfdb9, &cru->glb_srst_fst_value);
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops rk3328_sysreset = {
+	.request	= rk3328_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_rk3328) = {
+	.name	= "rk3328_sysreset",
+	.id	= UCLASS_SYSRESET,
+	.ops	= &rk3328_sysreset,
+};