Hi Andrea, Am 13.03.24 um 15:08 schrieb Andrea della Porta:
BCM2711 has 4 DMA channels with a 40-bit address range, allowing them to access the full 4GB of memory on a Pi 4. Assume every channel is capable of 40-bit address range. Originally-by: Phil Elwell <phil@xxxxxxxxxxxxxxx> Originally-by: Maxime Ripard <maxime@xxxxxxxxxx> Originally-by: Stefan Wahren <stefan.wahren@xxxxxxxx> Signed-off-by: Andrea della Porta <andrea.porta@xxxxxxxx> --- drivers/dma/bcm2835-dma.c | 553 ++++++++++++++++++++++++++++++++------ 1 file changed, 466 insertions(+), 87 deletions(-)
this patch contains a lot of changes (including style fixes). It would be better to split this more for a better understanding.
