[U-Boot] [PATCH v3 08/16] rockchip: rk3188: Add sysreset driver

Heiko Stuebner
2017-02-03T16:09:31Z

Driver for the sysreset of Rockchip rk3188 socs.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
drivers/sysreset/Makefile | 1 +
drivers/sysreset/sysreset_rk3188.c | 47 ++++++++++++++++++++++++++++++++++++++
2 files changed, 48 insertions(+)
create mode 100644 drivers/sysreset/sysreset_rk3188.c

diff --git a/drivers/sysreset/Makefile b/drivers/sysreset/Makefile
index fa75cc52de..30f1bce390 100644
--- a/drivers/sysreset/Makefile
+++ b/drivers/sysreset/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_SYSRESET) += sysreset-uclass.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_ROCKCHIP_RK3036) += sysreset_rk3036.o
endif
+obj-$(CONFIG_ROCKCHIP_RK3188) += sysreset_rk3188.o
obj-$(CONFIG_ROCKCHIP_RK3288) += sysreset_rk3288.o
obj-$(CONFIG_ROCKCHIP_RK3399) += sysreset_rk3399.o
obj-$(CONFIG_SANDBOX) += sysreset_sandbox.o
diff --git a/drivers/sysreset/sysreset_rk3188.c b/drivers/sysreset/sysreset_rk3188.c
new file mode 100644
index 0000000000..36ae47600a
--- /dev/null
+++ b/drivers/sysreset/sysreset_rk3188.c
@@ -0,0 +1,47 @@
+/*
+ * (C) Copyright 2015 Google, Inc
+ *
+ * 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_rk3188.h>
+#include <asm/arch/hardware.h>
+#include <linux/err.h>
+
+int rk3188_sysreset_request(struct udevice *dev, enum sysreset_t type)
+{
+ struct rk3188_cru *cru = rockchip_get_cru();
+
+ if (IS_ERR(cru))
+ return PTR_ERR(cru);
+ switch (type) {
+ case SYSRESET_WARM:
+ rk_clrreg(&cru->cru_mode_con, 0xffff);
+ writel(0xeca8, &cru->cru_glb_srst_snd_value);
+ break;
+ case SYSRESET_COLD:
+ rk_clrreg(&cru->cru_mode_con, 0xffff);
+ writel(0xfdb9, &cru->cru_glb_srst_fst_value);
+ break;
+ default:
+ return -EPROTONOSUPPORT;
+ }
+
+ return -EINPROGRESS;
+}
+
+static struct sysreset_ops rk3188_sysreset = {
+ .request = rk3188_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_rk3188) = {
+ .name = "rk3188_sysreset",
+ .id = UCLASS_SYSRESET,
+ .ops = &rk3188_sysreset,
+};
--
2.11.0