summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorHeiko Stübner <heiko@sntech.de>2017-04-07 12:38:52 +0200
committerSimon Glass <sjg@chromium.org>2017-04-15 10:13:17 -0600
commit4e5439ac25486e34568d96f99fefb464a857855c (patch)
treeeb46c0f05c02b99433492b96e86311c0a1191037 /drivers
parent86d012657c008dbd1c632452fc0193e71e2be77e (diff)
rockchip: sysreset: rk3188: Make sure remap is off on warm-resets
The warm-reset of rk3188 socs keeps the remap setting as it was, so if it was enabled, the cpu would start from address 0x0 of the sram instead of address 0x0 of the bootrom, thus making the reset hang. Therefore make sure the remap is disabled before attempting a warm reset. Cold reset is not affected by this at all. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/sysreset/sysreset_rk3188.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/sysreset/sysreset_rk3188.c b/drivers/sysreset/sysreset_rk3188.c
index 36ae47600a..053a6344f5 100644
--- a/drivers/sysreset/sysreset_rk3188.c
+++ b/drivers/sysreset/sysreset_rk3188.c
@@ -7,21 +7,36 @@
#include <common.h>
#include <dm.h>
#include <errno.h>
+#include <syscon.h>
#include <sysreset.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/cru_rk3188.h>
+#include <asm/arch/grf_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();
+ struct rk3188_grf *grf;
if (IS_ERR(cru))
return PTR_ERR(cru);
switch (type) {
case SYSRESET_WARM:
+ grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ if (IS_ERR(grf))
+ return -EPROTONOSUPPORT;
+
+ /*
+ * warm-reset keeps the remap value,
+ * so make sure it's disabled.
+ */
+ rk_clrsetreg(&grf->soc_con0,
+ NOC_REMAP_MASK << NOC_REMAP_SHIFT,
+ 0 << NOC_REMAP_SHIFT);
+
rk_clrreg(&cru->cru_mode_con, 0xffff);
writel(0xeca8, &cru->cru_glb_srst_snd_value);
break;