On Fri, Nov 12, 2021 at 01:43:54PM +, Robin Murphy wrote:
> On 12/11/2021 1:12 pm, Thierry Reding wrote:
> > From: Thierry Reding
> >
> > Hi,
> >
> > this series of patches adds and enables support for the ARM SMMU
> > instances found on the new Tegra234 SoC. This is mostly similar to what
>
On 12/11/2021 1:12 pm, Thierry Reding wrote:
From: Thierry Reding
Hi,
this series of patches adds and enables support for the ARM SMMU
instances found on the new Tegra234 SoC. This is mostly similar to what
can be found on Tegra194 except that there are a few more instances to
meet increased b
From: Thierry Reding
The NVIDIA Tegra234 SoC comes with one single-instance ARM SMMU used by
isochronous memory clients and two dual-instance ARM SMMUs used by non-
isochronous memory clients.
Add the corresponding device tree nodes and hook up existing memory
clients (SDHCI and BPMP).
Signed-o
From: Thierry Reding
On NVIDIA SoC's the ARM SMMU needs to interact with the memory
controller in order to map memory clients to the corresponding stream
IDs. Document how the nvidia,memory-controller property can be used to
achieve this.
Signed-off-by: Thierry Reding
---
Documentation/devicet
From: Thierry Reding
Allow the NVIDIA-specific ARM SMMU implementation to bind to the SMMU
instances found on Tegra234.
Signed-off-by: Thierry Reding
---
drivers/iommu/arm/arm-smmu/arm-smmu-impl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/arm/arm-smmu/
From: Thierry Reding
The NVIDIA Tegra234 SoC comes with one single-instance ARM SMMU used by
isochronous memory clients and two dual-instance ARM SMMUs used by non-
isochronous memory clients.
Signed-off-by: Thierry Reding
---
Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 +++-
1 f
From: Thierry Reding
Hi,
this series of patches adds and enables support for the ARM SMMU
instances found on the new Tegra234 SoC. This is mostly similar to what
can be found on Tegra194 except that there are a few more instances to
meet increased bandwidth needs.
In addition to adding support
After adding device_link between the IOMMU consumer and smi,
the mediatek,larb is unnecessary now.
CC: Matthias Brugger
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
---
arch/arm64/boot/dts/mediatek/mt8173.dtsi | 16
arch/arm64/boot/dts/mediatek/mt8183.dtsi | 6 --
2 fil
After adding device_link between the IOMMU consumer and smi, the
mediatek,larb is unnecessary now.
CC: Matthias Brugger
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
Tested-by: Frank Wunderlich # BPI-R2/MT7623
---
arch/arm/boot/dts/mt2701.dtsi | 2 --
arch/arm/boot/dts/mt7623n.dtsi | 5
After adding device_link between the iommu consumer and smi-larb,
the pm_runtime_get(_sync) of smi-larb and smi-common will be called
automatically. we can get rid of mtk_smi_larb_get/put.
CC: Matthias Brugger
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
Acked-by: Krzysztof Kozlowski
Acked-b
After this patchset, mtk_vcodec_release_enc_pm has only one line.
then remove that function, use pm_runtime_disable instead.
meanwhile, mtk_vcodec_init_enc_pm only operate for the clocks,
rename it from the _pm to _clk.
No functional change.
CC: Tiffany Lin
CC: Irui Wang
Signed-off-by: Yong Wu
After this patchset, mtk_vcodec_release_dec_pm has only one line.
then remove that function. Use pm_runtime_disable directly instead.
For symmetry, move the pm_runtime_enable out from
mtk_vcodec_init_dec_pm, then mtk_vcodec_init_dec_pm only operate for
the clocks, rename it from the _pm to _clk.
MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the vcodec device call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: Tiffany Lin
CC: Irui Wang
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
Acked-by:
MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the drm device call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: CK Hu
CC: Philipp Zabel
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
Acked-by: Chun-
From: Yongqiang Niu
Prepare for smi cleaning up "mediatek,larb".
Display use the dispsys device to call pm_rumtime_get_sync before.
This patch add pm_runtime_xx with ovl and rdma device whose nodes has
"iommus" property, then display could help pm_runtime_get for smi via
ovl or rdma device.
CC:
MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the mdp device call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: Minghsiu Tsai
CC: Houlong Wei
Signed-off-by: Yong Wu
Reviewed-by: Evan Green
Reviewed-
MediaTek IOMMU has already added device_link between the consumer
and smi-larb device. If the jpg device call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
After removing the larb_get operations, then mtk_jpeg_clk_init is
also unnecessary. Remove it too.
MediaTek IOMMU-SMI diagram is like below. all the consumer connect with
smi-larb, then connect with smi-common.
M4U
|
smi-common
|
-
| |...
| |
larb1 larb2
| |
vdec venc
When the consumer works, it should enab
Prepare for adding device_link.
The iommu consumer should use device_link to connect with the
smi-larb(supplier). then the smi-larb should run before the iommu
consumer. Here we delay the iommu driver until the smi driver is ready,
then all the iommu consumers always are after the smi driver.
Whe
The platform device is created at:
of_platform_default_populate_init: arch_initcall_sync
->of_platform_populate
->of_platform_device_create_pdata
When entering our probe, all the devices should be already created.
if it is null, means NODEV. Currently we don't get the fail case.
It's a
When the iommu master device enters of_iommu_xlate, the ops may be
NULL(iommu dev is defered), then it will initialize the fwspec here:
[] (dev_iommu_fwspec_set) from []
(iommu_fwspec_init+0xbc/0xd4)
[] (iommu_fwspec_init) from []
(of_iommu_xlate+0x7c/0x12c)
[] (of_iommu_xlate) from []
(of_iommu_c
After adding device_link between the consumer with the smi-larbs,
if the consumer call its owner pm_runtime_get(_sync), the
pm_runtime_get(_sync) of smi-larb and smi-common will be called
automatically. Thus, the consumer don't need this property.
And IOMMU also know which larb this consumer conne
MediaTek IOMMU block diagram always like below:
M4U
|
smi-common
|
-
| | ...
| |
larb1 larb2
| |
vdec venc
All the consumer connect with smi-larb, then connect with smi-common.
When the consumer works, it should
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