linux-next: manual merge of the iommu tree with the arm-soc tree

linux-next: manual merge of the iommu tree with the arm-soc tree

[Stephen Rothwell]

Hi Joerg,

Today's linux-next merge of the iommu tree got a conflict in:

  arch/arm64/boot/dts/mediatek/mt8173.dtsi

between commit:

  93e9f5ee1e35 ("dts: arm64: Add EFUSE device node")

from the arm-soc tree and commit:

  5ff6b3a6d391 ("dts: mt8173: Add iommu/smi nodes for mt8173")

from the iommu tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell

diff --cc arch/arm64/boot/dts/mediatek/mt8173.dtsi
index f4bd3c9182ad,804881181fcc..000000000000
--- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
@@@ -277,11 -278,17 +278,22 @@@
  			reg = <0 0x10200620 0 0x20>;
  		};
  
+ 		iommu: iommu@10205000 {
+ 			compatible = "mediatek,mt8173-m4u";
+ 			reg = <0 0x10205000 0 0x1000>;
+ 			interrupts = <GIC_SPI 139 IRQ_TYPE_LEVEL_LOW>;
+ 			clocks = <&infracfg CLK_INFRA_M4U>;
+ 			clock-names = "bclk";
+ 			mediatek,larbs = <&larb0 &larb1 &larb2
+ 					  &larb3 &larb4 &larb5>;
+ 			#iommu-cells = <1>;
+ 		};
+ 
 +		efuse: efuse@10206000 {
 +			compatible = "mediatek,mt8173-efuse";
 +			reg = <0 0x10206000 0 0x1000>;
 +		};
 +
  		apmixedsys: clock-controller@10209000 {
  			compatible = "mediatek,mt8173-apmixedsys";
  			reg = <0 0x10209000 0 0x1000>;

linux-next: manual merge of the iommu tree with the arm-soc tree

[Stephen Rothwell]

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Hi all,

Today's linux-next merge of the iommu tree got a conflict in:

  MAINTAINERS

between commit:

  a12d521f4a3d ("dt-bindings: iommu: Add Apple SART DMA address filter")

from the arm-soc tree and commit:

  ee5354345242 ("MAINTAINERS: Merge DART into ARM/APPLE MACHINE")

from the iommu tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc MAINTAINERS
index 83a61d719d95,7d728a19e857..000000000000
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@@ -1837,9 -1829,8 +1829,10 @@@ F:	Documentation/devicetree/bindings/ar
  F:	Documentation/devicetree/bindings/clock/apple,nco.yaml
  F:	Documentation/devicetree/bindings/i2c/apple,i2c.yaml
  F:	Documentation/devicetree/bindings/interrupt-controller/apple,*
 +F:	Documentation/devicetree/bindings/iommu/apple,sart.yaml
+ F:	Documentation/devicetree/bindings/iommu/apple,dart.yaml
  F:	Documentation/devicetree/bindings/mailbox/apple,mailbox.yaml
 +F:	Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml
  F:	Documentation/devicetree/bindings/pci/apple,pcie.yaml
  F:	Documentation/devicetree/bindings/pinctrl/apple,pinctrl.yaml
  F:	Documentation/devicetree/bindings/power/apple*
@@@ -1848,9 -1839,9 +1841,10 @@@ F:	arch/arm64/boot/dts/apple
  F:	drivers/clk/clk-apple-nco.c
  F:	drivers/i2c/busses/i2c-pasemi-core.c
  F:	drivers/i2c/busses/i2c-pasemi-platform.c
+ F:	drivers/iommu/apple-dart.c
  F:	drivers/irqchip/irq-apple-aic.c
  F:	drivers/mailbox/apple-mailbox.c
 +F:	drivers/nvme/host/apple.c
  F:	drivers/pinctrl/pinctrl-apple-gpio.c
  F:	drivers/soc/apple/*
  F:	drivers/watchdog/apple_wdt.c

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linux-next: manual merge of the iommu tree with the arm-soc tree

[Mark Brown]

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Hi all,

Today's linux-next merge of the iommu tree got a conflict in:

  arch/arm64/configs/defconfig

between commit:

  f54f7979ff88d ("arm64: defconfig: Move entries to match savedefconfig")

from the arm-soc tree and commit:

  187029b922d0e ("arm64: defconfig: enable Verisilicon IOMMU for Rockchip RK3588")

from the iommu tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

diff --cc arch/arm64/configs/defconfig
index 9f00e2823ccb6,2755960fce06a..0000000000000
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@@ -1587,22 -1608,23 +1587,23 @@@ CONFIG_RENESAS_OSTM=
  CONFIG_ARM_MHU=y
  CONFIG_EXYNOS_MBOX=m
  CONFIG_IMX_MBOX=y
 -CONFIG_OMAP2PLUS_MBOX=m
  CONFIG_PLATFORM_MHU=y
 +CONFIG_OMAP2PLUS_MBOX=m
  CONFIG_BCM2835_MBOX=y
  CONFIG_QCOM_APCS_IPC=y
 +CONFIG_TEGRA_HSP_MBOX=y
  CONFIG_MTK_ADSP_MBOX=m
  CONFIG_QCOM_CPUCP_MBOX=m
 -CONFIG_TEGRA_HSP_MBOX=y
  CONFIG_QCOM_IPCC=y
  CONFIG_CIX_MBOX=y
 -CONFIG_ROCKCHIP_IOMMU=y
 -CONFIG_TEGRA_IOMMU_SMMU=y
  CONFIG_ARM_SMMU=y
  CONFIG_ARM_SMMU_V3=y
 -CONFIG_MTK_IOMMU=y
  CONFIG_QCOM_IOMMU=y
 +CONFIG_ROCKCHIP_IOMMU=y
 +CONFIG_TEGRA_IOMMU_SMMU=y
  CONFIG_APPLE_DART=m
 +CONFIG_MTK_IOMMU=y
+ CONFIG_VSI_IOMMU=m
  CONFIG_REMOTEPROC=y
  CONFIG_IMX_REMOTEPROC=y
  CONFIG_MTK_SCP=m

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Re: linux-next: manual merge of the iommu tree with the arm-soc tree

[Krzysztof Kozlowski]

On 18/05/2026 15:06, Mark Brown wrote:
> Hi all,
> 
> Today's linux-next merge of the iommu tree got a conflict in:
> 
>   arch/arm64/configs/defconfig
> 
> between commit:
> 
>   f54f7979ff88d ("arm64: defconfig: Move entries to match savedefconfig")
> 
> from the arm-soc tree and commit:
> 
>   187029b922d0e ("arm64: defconfig: enable Verisilicon IOMMU for Rockchip RK3588")

This patch should rather not be taken by iommu tree.

Just like DTS this is patch for SoC platform. Joerg, could you drop it?
It's better if SoC platform maintainer handles the conflicts.

Best regards,
Krzysztof

Re: linux-next: manual merge of the iommu tree with the arm-soc tree

[Joerg Roedel]

On Mon, May 18, 2026 at 05:17:07PM +0200, Krzysztof Kozlowski wrote:
> >   187029b922d0e ("arm64: defconfig: enable Verisilicon IOMMU for Rockchip RK3588")
> 
> This patch should rather not be taken by iommu tree.
> 
> Just like DTS this is patch for SoC platform. Joerg, could you drop it?
> It's better if SoC platform maintainer handles the conflicts.

It is now dropped, will push out a new tree later today.

-Joerg