[U-Boot] [PATCH 5/8] rockchip: rk3128: add sysreset driver

[Kever Yang]

Add rk3128 sysreset driver.

Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
---

 drivers/sysreset/Makefile          |  1 +
 drivers/sysreset/sysreset_rk3128.c | 45 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 drivers/sysreset/sysreset_rk3128.c

diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index ce161a7..e3a0ab1 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_SYSRESET_WATCHDOG) += sysreset_watchdog.o
 ifndef CONFIG_SPL_BUILD
 obj-$(CONFIG_ROCKCHIP_RK3036) += sysreset_rk3036.o
 endif
+obj-$(CONFIG_ROCKCHIP_RK3128) += sysreset_rk3128.o
 obj-$(CONFIG_ROCKCHIP_RK3188) += sysreset_rk3188.o
 obj-$(CONFIG_ROCKCHIP_RK322X) += sysreset_rk322x.o
 obj-$(CONFIG_ROCKCHIP_RK3288) += sysreset_rk3288.o
diff --git a/drivers/sysreset/sysreset_rk3128.c b/drivers/sysreset/sysreset_rk3128.c
new file mode 100644
index 0000000..5aab8ec
--- /dev/null
+++ b/drivers/sysreset/sysreset_rk3128.c
@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2017 Rockchip Electronics Co., Ltd
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/cru_rk3128.h>
+#include <asm/arch/hardware.h>
+#include <linux/err.h>
+
+int rk3128_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+	struct rk3128_cru *cru = rockchip_get_cru();
+
+	if (IS_ERR(cru))
+		return PTR_ERR(cru);
+	switch (type) {
+	case SYSRESET_WARM:
+		writel(0xeca8, &cru->cru_glb_srst_snd_value);
+		break;
+	case SYSRESET_COLD:
+		writel(0xfdb9, &cru->cru_glb_srst_fst_value);
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops rk3128_sysreset = {
+	.request	= rk3128_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_rk3128) = {
+	.name	= "rk3128_sysreset",
+	.id	= UCLASS_SYSRESET,
+	.ops	= &rk3128_sysreset,
+};
-- 
1.9.1