[PATCH 4/4] stm32mp: fix name of optee reserved memory node

[Patrick Delaunay]

In OP-TEE, the "optee_core@" node is reserved, appended in non secure
device tree (see mark_tzdram_as_reserved() function under CFG_DT) so
this name must be checked in optee_get_reserved_memory().
We keep the check on /reserved-memory/optee@ node to have backward
compatibility with STMT32Image booting, when the reserved node is
already present in U-Boot or SPL device tree with name "optee@".

This patch solves a boot issue on board with OP-TEE for U-Boot
compiled with stm32mp15_defconfig and without secure configuration
device tree (stm32mp157c-dk2.dts for example).

Fixes: 5fe9e0deabb1 ("stm32mp: allow calling optee_get_reserved_memory()
from U-Boot")
Signed-off-by: Patrick Delaunay <patrick.delaunay at foss.st.com>
---

 arch/arm/mach-stm32mp/dram_init.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-stm32mp/dram_init.c b/arch/arm/mach-stm32mp/dram_init.c
index 58290105d127..6a36aecf5cd3 100644
--- a/arch/arm/mach-stm32mp/dram_init.c
+++ b/arch/arm/mach-stm32mp/dram_init.c
@@ -25,8 +25,11 @@ int optee_get_reserved_memory(u32 *start, u32 *size)
 	ofnode node;
 
 	node = ofnode_path("/reserved-memory/optee");
-	if (!ofnode_valid(node))
-		return -ENOENT;
+	if (!ofnode_valid(node)) {
+		node = ofnode_path("/reserved-memory/optee_core");
+		if (!ofnode_valid(node))
+			return -ENOENT;
+	}
 
 	fdt_start = ofnode_get_addr_size(node, "reg", &fdt_mem_size);
 	*start = fdt_start;
-- 
2.25.1