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Commit b91bf997 authored by Thierry Reding's avatar Thierry Reding
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drm/tegra: falcon: Wait for memory scrubbing to complete 



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

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent 4eab8c0e

drivers/gpu/drm/tegra/falcon.c

+8 −0
Original line number Diff line number Diff line
@@ -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 */