From: Patrice Chotard <patrice.chot...@st.com>

As sti-display-subsystem sub-nodes (sti-compositor, sti-tvout
sti-hdmi, sti-hda and sti-hqvdp) are SoC's IP, we add a fake
reg property.
This allows to fix the following warning when compiling
dtb with W=1 option:

arch/arm/boot/dts/stih410-b2120.dtb: Warning (unit_address_vs_reg):
Node /soc/sti-display-subsystem/sti-hda@8d02000 has a unit name, but no reg 
property

Signed-off-by: Patrice Chotard <patrice.chot...@st.com>
---

v2: _ add a fake reg property to node without reg property

 arch/arm/boot/dts/stih407.dtsi      | 4 ++--
 arch/arm/boot/dts/stih410-b2120.dts | 2 +-
 arch/arm/boot/dts/stih410.dtsi      | 3 ++-
 3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/stih407.dtsi b/arch/arm/boot/dts/stih407.dtsi
index 11fdecd9312e..4f01777082f5 100644
--- a/arch/arm/boot/dts/stih407.dtsi
+++ b/arch/arm/boot/dts/stih407.dtsi
@@ -11,11 +11,11 @@
 #include <dt-bindings/gpio/gpio.h>
 / {
        soc {
-               sti-display-subsystem {
+               sti-display-subsystem@0 {
                        compatible = "st,sti-display-subsystem";
                        #address-cells = <1>;
                        #size-cells = <1>;
-
+                       reg = <0 0>;
                        assigned-clocks = <&clk_s_d2_quadfs 0>,
                                          <&clk_s_d2_quadfs 1>,
                                          <&clk_s_c0_pll1 0>,
diff --git a/arch/arm/boot/dts/stih410-b2120.dts 
b/arch/arm/boot/dts/stih410-b2120.dts
index 37a42afa0dd1..23199b1b0991 100644
--- a/arch/arm/boot/dts/stih410-b2120.dts
+++ b/arch/arm/boot/dts/stih410-b2120.dts
@@ -61,7 +61,7 @@
                        status = "okay";
                };
 
-               sti-display-subsystem {
+               sti-display-subsystem@0 {
                        sti-hda@8d02000 {
                                status = "okay";
                        };
diff --git a/arch/arm/boot/dts/stih410.dtsi b/arch/arm/boot/dts/stih410.dtsi
index e4b7e3ddc9ee..d9f964702933 100644
--- a/arch/arm/boot/dts/stih410.dtsi
+++ b/arch/arm/boot/dts/stih410.dtsi
@@ -102,11 +102,12 @@
                        status = "disabled";
                };
 
-               sti-display-subsystem {
+               sti-display-subsystem@0 {
                        compatible = "st,sti-display-subsystem";
                        #address-cells = <1>;
                        #size-cells = <1>;
 
+                       reg = <0 0>;
                        assigned-clocks = <&clk_s_d2_quadfs 0>,
                                          <&clk_s_d2_quadfs 1>,
                                          <&clk_s_c0_pll1 0>,
-- 
1.9.1

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