[PATCH v4] arm64: dts: st: Add memory-region-names property for stm32mp257f-ev1

[Patrice Chotard <patrice.chotard@foss.st.com>]

In order to set the AMCR register, which configures the
memory-region split between ospi1 and ospi2, we need to
identify the ospi instance.

By using memory-region-names, it allows to identify the
ospi instance this memory-region belongs to.

Fixes: cad2492de91c ("arm64: dts: st: Add SPI NOR flash support on stm32mp257f-ev1 board")
Cc: stable@vger.kernel.org
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
---
Changes in v4:
- Rebase on v6.18-rc1
- Link to v3: https://lore.kernel.org/r/20250811-upstream_fix_dts_omm-v3-1-c4186b7667cb@foss.st.com

Changes in v3:
- Set again "Cc: <stable@vger.kernel.org>"
- Link to v2: https://lore.kernel.org/r/20250811-upstream_fix_dts_omm-v2-1-00ff55076bd5@foss.st.com

Changes in v2:
- Update commit message.
- Use correct memory-region-names value.
- Remove "Cc: <stable@vger.kernel.org>" tag as the fixed patch is not part of a LTS.
- Link to v1: https://lore.kernel.org/r/20250806-upstream_fix_dts_omm-v1-1-e68c15ed422d@foss.st.com
---
 arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
index 6e165073f732..bb6d6393d2e4 100644
--- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
+++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts
@@ -266,6 +266,7 @@ &i2c8 {
 
 &ommanager {
 	memory-region = <&mm_ospi1>;
+	memory-region-names = "ospi1";
 	pinctrl-0 = <&ospi_port1_clk_pins_a
 		     &ospi_port1_io03_pins_a
 		     &ospi_port1_cs0_pins_a>;

---
base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787
change-id: 20250806-upstream_fix_dts_omm-c006b69042f1

Best regards,
-- 
Patrice Chotard <patrice.chotard@foss.st.com>