redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

ARM: dts: sun7i-a20: Add Video Engine and reserved memory nodes 

This adds nodes for the Video Engine and the associated reserved memory
for the A20. Up to 96 MiB of memory are dedicated to the CMA pool.

The VPU can only map the first 256 MiB of DRAM, so the reserved memory
pool has to be located in that area. Following Allwinner's decision in
downstream software, the last 96 MiB of the first 256 MiB of RAM are
reserved for this purpose.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
hifive-unleashed-5.1
Paul Kocialkowski 2018-09-07 00:24:40 +02:00 committed by Maxime Ripard
parent 9604320101
commit c2a641a748
No known key found for this signature in database
GPG Key ID: D2B4C094214DAF74
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
arch/arm/boot/dts/sun7i-a20.dtsi
View File

@ -174,6 +174,21 @@
reg = <0x40000000 0x80000000>;
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
/* Address must be kept in the lower 256 MiBs of DRAM for VE. */
cma_pool: cma@4a000000 {
compatible = "shared-dma-pool";
size = <0x6000000>;
alloc-ranges = <0x4a000000 0x6000000>;
reusable;
linux,cma-default;
};
};
timer {
compatible = "arm,armv7-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
@ -479,6 +494,17 @@
};
};
video-codec@1c0e000 {
compatible = "allwinner,sun7i-a20-video-engine";
reg = <0x01c0e000 0x1000>;
clocks = <&ccu CLK_AHB_VE>, <&ccu CLK_VE>,
<&ccu CLK_DRAM_VE>;
clock-names = "ahb", "mod", "ram";
resets = <&ccu RST_VE>;
interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
allwinner,sram = <&ve_sram 1>;
};
mmc0: mmc@1c0f000 {
compatible = "allwinner,sun7i-a20-mmc";
reg = <0x01c0f000 0x1000>;