On Thu, Oct 14, 2021 at 06:32:30PM -0400, Mwesigwa Guma wrote: > Cc: Nicolas Saenz Julienne <nsaenz@xxxxxxxxxx> > Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > Cc: Stefan Wahren <stefan.wahren@xxxxxxxx> > Cc: Ojaswin Mujoo <ojaswin98@xxxxxxxxx> > Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx> > Cc: Amarjargal Gundjalam <amarjargal16@xxxxxxxxx> > Cc: Phil Elwell <phil@xxxxxxxxxxxxxxx> > Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx > Cc: linux-rpi-kernel@xxxxxxxxxxxxxxxxxxx > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: linux-staging@xxxxxxxxxxxxxxx > Cc: fedora-rpi@xxxxxxxxxxxxxxxx > Cc: Joel Savitz <jsavitz@xxxxxxxxxx> > Cc: Chukpozohn Toe <ctoe@xxxxxxxxxx> > Cc: Clark Williams <clark@xxxxxxxxxx> > Did you intend to put this CC list here? It goes at the end next to the Signed-off-by line if so. I don't feel like it's required except maybe Phil to show he was Cc'd. > This is a forward port of Phil Elwell's commit from the Raspberry Pi > Linux fork described as follows [1]: Please use the From: header to give authorship credit. From: Phil Elwell <phil@xxxxxxxxxxxxxxx> Make that the first line of the email. > > Conditional on a new compatible string, change the pagelist encoding > such that the top 24 bits are the pfn, leaving 8 bits for run length > (-1), giving a 36-bit address range. > > Manage the split between addresses for the VPU and addresses for the > 40-bit DMA controller with a dedicated DMA device pointer that on non- > BCM2711 platforms is the same as the main VCHIQ device. This allows > the VCHIQ node to stay in the usual place in the DT. > > This commit enables VCHIQ device access on a Raspberry Pi 4B running the > mainline Linux kernel. > > Tested on Fedora Linux running on a Raspberry Pi 4B. > > [1]: https://github.com/raspberrypi/linux/commit/97268fd23eb8d08dc74eac5e3fd697303de26610 > > Signed-off-by: Mwesigwa Guma <mguma@xxxxxxxxxx> regards, dan carpenter
