diff options
| -rw-r--r-- | drivers/gpu/drm/tegra/falcon.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/falcon.c b/drivers/gpu/drm/tegra/falcon.c index 78c7a0156601..352d05feabb0 100644 --- a/drivers/gpu/drm/tegra/falcon.c +++ b/drivers/gpu/drm/tegra/falcon.c @@ -197,11 +197,19 @@ void falcon_exit(struct falcon *falcon) int falcon_boot(struct falcon *falcon) { unsigned long offset; + u32 value; int err; if (!falcon->firmware.vaddr) 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); /* setup the address of the binary data so Falcon can access it later */ |