[bsp/raspberry-pi] update DM support

- reorganize common Raspberry Pi drivers under the device framework
- add the Raspberry Pi 5 BSP, configuration and documentation
- add BCM2712 and DesignWare AXI DMA controller support
- distinguish BCM2712 DMA32 and DMA40 channels by channel mask
- restore DesignWare AXI DMA enable bits after controller reset
- support a shared AXI maximum burst length across DMA channels

Signed-off-by: GuEe-GUI <[email protected]>

1 files changed, 13 insertions, 0 deletions

diff --git a/bsp/raspberry-pi/dm/SConscript b/bsp/raspberry-pi/dm/SConscript
new file mode 100755
index 0000000000..3d15055d62
--- /dev/null
+++ b/bsp/raspberry-pi/dm/SConscript
@@ -0,0 +1,13 @@
+import os
+from building import *
+
+cwd = GetCurrentDir()
+objs = []
+list = os.listdir(cwd)
+
+for d in list:
+    path = os.path.join(cwd, d)
+    if os.path.isfile(os.path.join(path, 'SConscript')):
+        objs = objs + SConscript(os.path.join(d, 'SConscript'))
+
+Return('objs')