@@ -97,6 +97,7 @@
de: display-engine {
compatible = "allwinner,sun8i-a33-display-engine";
allwinner,pipelines = <&fe0>;
+ memory-region = <&display_pool>;
status = "disabled";
};
@@ -104,6 +105,18 @@
reg = <0x40000000 0x80000000>;
};
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ display_pool: cma {
+ compatible = "shared-dma-pool";
+ size = <0x1000000>;
+ reusable;
+ };
+ };
+
soc@01c00000 {
tcon0: lcd-controller@01c0c000 {
compatible = "allwinner,sun8i-a33-tcon";
@@ -267,6 +280,10 @@
compatible = "allwinner,sun8i-a33-ccu";
};
+&mali {
+ memory-region = <&display_pool>;
+};
+
&pio {
compatible = "allwinner,sun8i-a33-pinctrl";
interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>,
The memory buffers might need to be allocated and shared from both the scanout and the GPU. Create a memory region reserved for their own usage so that each can allocate from it, and get the informations on the region that is going to be used (size and offset). Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> --- arch/arm/boot/dts/sun8i-a33.dtsi | 17 +++++++++++++++++ 1 file changed, 17 insertions(+), 0 deletions(-)