iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/tegra: falcon: Wait for memory scrubbing to complete

Browse Source 
Before booting the Falcon processor, make sure to wait for memory
scrubbing to complete.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2018-11-23 13:06:39 +01:00
parent 4eab8c0ebd
commit b91bf997ea
1 changed files with 8 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/tegra/falcon.c
View File

@ -197,11 +197,19 @@ void falcon_exit(struct falcon *falcon)
int falcon_boot(struct falcon *falcon) int falcon_boot(struct falcon *falcon)
{ {
unsigned long offset; unsigned long offset;
u32 value;
int err; int err;
if (!falcon->firmware.vaddr) if (!falcon->firmware.vaddr)
return -EINVAL; return -EINVAL;
err = readl_poll_timeout(falcon->regs + FALCON_DMACTL, value,
(value & (FALCON_DMACTL_IMEM_SCRUBBING |
FALCON_DMACTL_DMEM_SCRUBBING)) == 0,
10, 10000);
if (err < 0)
return err;
falcon_writel(falcon, 0, FALCON_DMACTL); falcon_writel(falcon, 0, FALCON_DMACTL);
/* setup the address of the binary data so Falcon can access it later */ /* setup the address of the binary data so Falcon can access it later */