On Thu, Sep 02, 2021 at 06:45:30PM +0200, Michael Walle wrote:
The fixup is done for the "fsl,ls1028a-gpu" which isn't any official device tree binding. Don't break it, but instead add a fixup for another compatible "vivante,gc" which is the offical one for the GPU on the LS1028A.
Signed-off-by: Michael Walle michael@walle.cc
arch/arm/cpu/armv8/fsl-layerscape/ls1028_ids.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/ls1028_ids.c b/arch/arm/cpu/armv8/fsl-layerscape/ls1028_ids.c index 49df8b3790..d93a793f39 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/ls1028_ids.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/ls1028_ids.c @@ -18,6 +18,7 @@ struct icid_id_table icid_tbl[] = { SET_SATA_ICID(1, "fsl,ls1028a-ahci", FSL_SATA1_STREAM_ID), SET_EDMA_ICID(FSL_EDMA_STREAM_ID), SET_QDMA_ICID("fsl,ls1028a-qdma", FSL_DMA_STREAM_ID),
- SET_GPU_ICID("vivante,gc", FSL_GPU_STREAM_ID), SET_GPU_ICID("fsl,ls1028a-gpu", FSL_GPU_STREAM_ID), SET_DISPLAY_ICID(FSL_DISPLAY_STREAM_ID),
#ifdef CONFIG_FSL_CAAM
2.30.2
So I have zero tangency with the LS1028A GPU (I've just ordered a DisplayPort to HDMI adapter so I can test it from now on with my HDMI capture card), but I think that you know that the "fsl,ls1028a-gpu" compatible string is for this driver: https://source.codeaurora.org/external/qoriq/qoriq-components/linux/tree/dri... which yes, has no upstream equivalent, and will probably never be upstream.
And by the way, every time I boot an upstream kernel with upstream U-Boot, I get this warning due to the attempted fixup, which is really annoying:
WARNING could not find node fsl,ls1028a-gpu: FDT_ERR_NOTFOUND.
So I personally would not mind if we would just delete anything having to do with "fsl,ls1028a-gpu" from mainline U-Boot (at least until something meaningful gets added to Linux which is specific to the LS1028A) :)
Let me add Andy Tang to the discussion just to make sure that he's aware of what you're up to: https://www.spinics.net/lists/kernel/msg4060045.html