board: ti: am654: Disable TRNG node for HS devices
On HS devices the access to TRNG is restricted on the non-secure
ARM side, disable the node in DT to prevent firewall violations.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
diff --git a/arch/arm/mach-k3/common.c b/arch/arm/mach-k3/common.c
index 3e36d90..c16afc6 100644
--- a/arch/arm/mach-k3/common.c
+++ b/arch/arm/mach-k3/common.c
@@ -137,6 +137,26 @@
return 0;
}
+
+int fdt_disable_node(void *blob, char *node_path)
+{
+ int offs;
+ int ret;
+
+ offs = fdt_path_offset(blob, node_path);
+ if (offs < 0) {
+ debug("Node %s not found.\n", node_path);
+ return 0;
+ }
+ ret = fdt_setprop_string(blob, offs, "status", "disabled");
+ if (ret < 0) {
+ printf("Could not add status property to node %s: %s\n",
+ node_path, fdt_strerror(ret));
+ return ret;
+ }
+ return 0;
+}
+
#endif
#ifndef CONFIG_SYSRESET