[PATCH v3 7/9] gpu: ipu-v3: only set non-zero AXI ID for IC when PRG is absent
From: Philipp Zabel <hidden>
Date: 2017-03-14 10:38:46
Also in:
dri-devel
Subsystem:
drm drivers, drm drivers for freescale imx 5/6, the rest · Maintainers:
David Airlie, Simona Vetter, Philipp Zabel, Linus Torvalds
From: Lucas Stach <redacted> Using non-zero AXI IDs for anything other than the display channels collides with the PRG AXI snooping, so only do this if there is no PRG present. Signed-off-by: Lucas Stach <redacted> Signed-off-by: Philipp Zabel <redacted> --- drivers/gpu/ipu-v3/ipu-image-convert.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/ipu-v3/ipu-image-convert.c b/drivers/gpu/ipu-v3/ipu-image-convert.c
index 805b6fa7b5f4c..524a717ab28e4 100644
--- a/drivers/gpu/ipu-v3/ipu-image-convert.c
+++ b/drivers/gpu/ipu-v3/ipu-image-convert.c@@ -671,7 +671,12 @@ static void init_idmac_channel(struct ipu_image_convert_ctx *ctx, ipu_ic_task_idma_init(chan->ic, channel, width, height, burst_size, rot_mode); - ipu_cpmem_set_axi_id(channel, 1); + /* + * Setting a non-zero AXI ID collides with the PRG AXI snooping, so + * only do this when there is no PRG present. + */ + if (!channel->ipu->prg_priv) + ipu_cpmem_set_axi_id(channel, 1); ipu_idmac_set_double_buffer(channel, ctx->double_buffering); }
--
2.11.0
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