Enable Vivante GPU driver for stm32mp157a-dk1 and dk2 boards.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mord...@st.com>
---
  Version history:
    v2:
       * move GPU reserved memeory out of bottom DDR to let free this area for
         U-Boot
    v1:
       * Initial
---
---
 arch/arm/boot/dts/stm32mp157a-dk1.dts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157a-dk1.dts 
b/arch/arm/boot/dts/stm32mp157a-dk1.dts
index 1b1886d..bd06f7b 100644
--- a/arch/arm/boot/dts/stm32mp157a-dk1.dts
+++ b/arch/arm/boot/dts/stm32mp157a-dk1.dts
@@ -27,6 +27,17 @@
                reg = <0xc0000000 0x20000000>;
        };
 
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               gpu_reserved: gpu@d4000000 {
+                       reg = <0xd4000000 0x4000000>;
+                       no-map;
+               };
+       };
+
        led {
                compatible = "gpio-leds";
                blue {
@@ -69,6 +80,11 @@
        status = "okay";
 };
 
+&gpu {
+       contiguous-area = <&gpu_reserved>;
+       status = "okay";
+};
+
 &iwdg2 {
        timeout-sec = <32>;
        status = "okay";
-- 
2.7.4

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