aboutsummaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorPatrick Delaunay <patrick.delaunay@foss.st.com>2021-06-29 12:04:23 +0200
committerPatrick Delaunay <patrick.delaunay@foss.st.com>2021-07-16 09:28:46 +0200
commit7c55249307a930251473c6635b67529fec36c7e3 (patch)
tree7386d24debe3e83caea5fbf435749ea472328f63 /arch
parent3105836c9e5d7c2823dc5817b60d6940bb1b817f (diff)
downloadu-boot-7c55249307a930251473c6635b67529fec36c7e3.zip
u-boot-7c55249307a930251473c6635b67529fec36c7e3.tar.gz
u-boot-7c55249307a930251473c6635b67529fec36c7e3.tar.bz2
stm32mp: syscon: manage clock when present in device tree
Enable the clocks during syscon probe when they are present in device tree. This patch avoids a freeze when the SYSCFG clock is not enabled by TF-A / OP-TEE. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-stm32mp/syscon.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c
index 3e61ce4..a0e8e1d 100644
--- a/arch/arm/mach-stm32mp/syscon.c
+++ b/arch/arm/mach-stm32mp/syscon.c
@@ -4,6 +4,7 @@
*/
#include <common.h>
+#include <clk.h>
#include <dm.h>
#include <syscon.h>
#include <asm/arch/stm32.h>
@@ -14,9 +15,22 @@ static const struct udevice_id stm32mp_syscon_ids[] = {
{ }
};
+static int stm32mp_syscon_probe(struct udevice *dev)
+{
+ struct clk_bulk clk_bulk;
+ int ret;
+
+ ret = clk_get_bulk(dev, &clk_bulk);
+ if (!ret)
+ clk_enable_bulk(&clk_bulk);
+
+ return 0;
+}
+
U_BOOT_DRIVER(syscon_stm32mp) = {
.name = "stmp32mp_syscon",
.id = UCLASS_SYSCON,
.of_match = stm32mp_syscon_ids,
.bind = dm_scan_fdt_dev,
+ .probe = stm32mp_syscon_probe,
};