[PATCH v3 0/4] agilex5: Update agilex5 device tree and device tree bindings

[PATCH v3 0/4] agilex5: Update agilex5 device tree and device tree bindings

[adrianhoyin.ng]

From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

This patch set is to update Agilex5 device tree and the related device
tree bindings.
Altera Agilex5 address bus only supports up to 40 bits. This patch set
adds support for a new property that is used to configure the
dma-bit-mask if its present in the device tree

This patch set includes the following changes:
-Add property for dw-axi-dmac that configures the dma-bit-mask to the
required bits.
-Update cdns nand dt binding with iommus and dma-coherent as an optional
property.
-Update Agilex5 dtsi and dts.
-Add implementation to set dma bit-mask to value configured in dma
bit-mask quirk if present.

v3:
-update commit description.
-update property naming to match property description.
-removed text description for default value and add as default property.
-update property name in dtsi.
-update dw-axi-dmac-platform to read updated property name.

v2:
-Fixed build errors and warnings in dw-axi-dmac.

Adrian Ng Ho Yin (4):
  dt-bindings: dma: snps,dw-axi-dmac: Add iommus dma-coherent and
    dma-addressable-bits property
  dt-bindings: mtd: cadence: Add iommus and dma-coherent properties
  arm64: dts: socfpga: agilex5: Update Agilex5 DTSI and DTS
  dma: dw-axi-dmac: Add support for dma-bit-mask property

 .../bindings/dma/snps,dw-axi-dmac.yaml        | 12 ++++++++++
 .../devicetree/bindings/mtd/cdns,hp-nfc.yaml  |  5 +++++
 .../arm64/boot/dts/intel/socfpga_agilex5.dtsi | 22 +++++++++++++++++++
 .../boot/dts/intel/socfpga_agilex5_socdk.dts  |  4 ++++
 .../dma/dw-axi-dmac/dw-axi-dmac-platform.c    | 14 ++++++++++--
 5 files changed, 55 insertions(+), 2 deletions(-)

-- 
2.49.GIT

[PATCH v3 1/4] dt-bindings: dma: snps,dw-axi-dmac: Add iommus dma-coherent and dma-addressable-bits property

[adrianhoyin.ng]

From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

Intel Agilex5 address bus only supports up to 40 bits. Add
dma-addressable-bits property to allow configuration of number of dma
addressable bits.Add iommu property for SMMU support. Add dma-coherent
property for cache coherent support.

Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>

v3:
-update commit description.
-update property naming to match description.
-removed text description for default value and add as default property.
---
 .../devicetree/bindings/dma/snps,dw-axi-dmac.yaml    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
index 935735a59afd..4000ffad46ea 100644
--- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
@@ -42,6 +42,9 @@ properties:
     minItems: 1
     maxItems: 8
 
+  iommus:
+    maxItems: 1
+
   clocks:
     items:
       - description: Bus Clock
@@ -61,6 +64,8 @@ properties:
 
   dma-noncoherent: true
 
+  dma-coherent: true
+
   resets:
     minItems: 1
     maxItems: 2
@@ -101,6 +106,13 @@ properties:
     minimum: 1
     maximum: 256
 
+  snps,dma-addressable-bits:
+    description:
+      Defines the number of addressable bits for DMA.
+    default: 64
+    minimum: 32
+    maximum: 64
+
 required:
   - compatible
   - reg
-- 
2.49.GIT

Re: [PATCH v3 1/4] dt-bindings: dma: snps,dw-axi-dmac: Add iommus dma-coherent and dma-addressable-bits property

[Krzysztof Kozlowski]

On 16/06/2025 16:40, adrianhoyin.ng@altera.com wrote:
> +
>    resets:
>      minItems: 1
>      maxItems: 2
> @@ -101,6 +106,13 @@ properties:
>      minimum: 1
>      maximum: 256
>  
> +  snps,dma-addressable-bits:
> +    description:

No, that's implied by SoC compatible.

Best regards,
Krzysztof

Re: [PATCH v3 1/4] dt-bindings: dma: snps,dw-axi-dmac: Add iommus dma-coherent and dma-addressable-bits property

[Dinh Nguyen]

On 6/16/25 09:40, adrianhoyin.ng@altera.com wrote:
> From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
> 
> Intel Agilex5 address bus only supports up to 40 bits. Add
> dma-addressable-bits property to allow configuration of number of dma
> addressable bits.Add iommu property for SMMU support. Add dma-coherent
> property for cache coherent support.
> 
> Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
> Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>
> 

Add a '---' above to signify the version history..

Applies to all of your patches.

Dinh

[PATCH v3 2/4] dt-bindings: mtd: cadence: Add iommus and dma-coherent properties

[adrianhoyin.ng]

From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

Update bindings to include iommus and dma-coherent as an optional
properties.

Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>
---
 Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml b/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
index e1f4d7c35a88..367257a227b1 100644
--- a/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
+++ b/Documentation/devicetree/bindings/mtd/cdns,hp-nfc.yaml
@@ -40,6 +40,11 @@ properties:
   dmas:
     maxItems: 1
 
+  dma-coherent: true
+
+  iommus:
+    maxItems: 1
+
   cdns,board-delay-ps:
     description: |
       Estimated Board delay. The value includes the total round trip
-- 
2.49.GIT

Re: [PATCH v3 2/4] dt-bindings: mtd: cadence: Add iommus and dma-coherent properties

[Krzysztof Kozlowski]

On Mon, Jun 16, 2025 at 10:40:46PM GMT, adrianhoyin.ng@altera.com wrote:
> From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
> 
> Update bindings to include iommus and dma-coherent as an optional
> properties.

Why? What you did we see. I don't understand why device which was not
DMA coherent now is marked as DMA coherent.

This applies to all your patches - each of them does not explain why you
are doing things.

Best regards,
Krzysztof

[PATCH v3 3/4] arm64: dts: socfpga: agilex5: Update Agilex5 DTSI and DTS

[adrianhoyin.ng]

From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

Add SMMU node in Agilex5 DTSI and enable it in socdk DTS.
Add IOMMU support for Agilex5 DMA controllers by adding the iommus,
dma-coherent, and dma-addressable-bits properties to the device tree nodes.
Add IOMMU support for Agilex5 NAND controller by adding iommus and
dma-coherent properties.
Add IOMMU support for Agilex5 DWC2 controller by adding iommus property.
Add ADP support for Agilex5 DWC2 controller by adding otg-rev property.

Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>

v3:
-update commit description.
-update property name to match dt bindings.
---
 .../arm64/boot/dts/intel/socfpga_agilex5.dtsi | 22 +++++++++++++++++++
 .../boot/dts/intel/socfpga_agilex5_socdk.dts  |  4 ++++
 2 files changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
index 7d9394a04302..261cfdb4d297 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi
@@ -272,6 +272,8 @@ nand: nand-controller@10b80000 {
 			interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&clkmgr AGILEX5_NAND_NF_CLK>;
 			cdns,board-delay-ps = <4830>;
+			iommus = <&smmu 4>;
+			dma-coherent;
 			status = "disabled";
 		};
 
@@ -291,6 +293,7 @@ dmac0: dma-controller@10db0000 {
 			clock-names = "core-clk", "cfgr-clk";
 			interrupt-parent = <&intc>;
 			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+			iommus = <&smmu 8>;
 			#dma-cells = <1>;
 			dma-channels = <4>;
 			snps,dma-masters = <1>;
@@ -298,6 +301,8 @@ dmac0: dma-controller@10db0000 {
 			snps,block-size = <32767 32767 32767 32767>;
 			snps,priority = <0 1 2 3>;
 			snps,axi-max-burst-len = <8>;
+			snps,dma-addressable-bits = <40>;
+			dma-coherent;
 		};
 
 		dmac1: dma-controller@10dc0000 {
@@ -308,6 +313,7 @@ dmac1: dma-controller@10dc0000 {
 			clock-names = "core-clk", "cfgr-clk";
 			interrupt-parent = <&intc>;
 			interrupts = <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH>;
+			iommus = <&smmu 9>;
 			#dma-cells = <1>;
 			dma-channels = <4>;
 			snps,dma-masters = <1>;
@@ -315,6 +321,8 @@ dmac1: dma-controller@10dc0000 {
 			snps,block-size = <32767 32767 32767 32767>;
 			snps,priority = <0 1 2 3>;
 			snps,axi-max-burst-len = <8>;
+			snps,dma-addressable-bits = <40>;
+			dma-coherent;
 		};
 
 		rst: rstmgr@10d11000 {
@@ -323,6 +331,18 @@ rst: rstmgr@10d11000 {
 			#reset-cells = <1>;
 		};
 
+		smmu: iommu@16000000 {
+			compatible = "arm,smmu-v3";
+			reg = <0x16000000 0x30000>;
+			interrupts = <GIC_SPI 134 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 129 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 132 IRQ_TYPE_EDGE_RISING>;
+			interrupt-names = "eventq", "gerror", "priq";
+			dma-coherent;
+			#iommu-cells = <1>;
+			status = "disabled";
+		};
+
 		spi0: spi@10da4000 {
 			compatible = "snps,dw-apb-ssi";
 			reg = <0x10da4000 0x1000>;
@@ -423,8 +443,10 @@ usb0: usb@10b00000 {
 			phy-names = "usb2-phy";
 			resets = <&rst USB0_RESET>, <&rst USB0_OCP_RESET>;
 			reset-names = "dwc2", "dwc2-ecc";
+			iommus = <&smmu 6>;
 			clocks = <&clkmgr AGILEX5_USB2OTG_HCLK>;
 			clock-names = "otg";
+			otg-rev = <0x0200>;
 			status = "disabled";
 		};
 
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts
index d3b913b7902c..360f44ef76fe 100644
--- a/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts
+++ b/arch/arm64/boot/dts/intel/socfpga_agilex5_socdk.dts
@@ -76,6 +76,10 @@ root: partition@4200000 {
 	};
 };
 
+&smmu {
+	status = "okay";
+};
+
 &uart0 {
 	status = "okay";
 };
-- 
2.49.GIT

[PATCH v3 4/4] dma: dw-axi-dmac: Add support for dma-bit-mask property

[adrianhoyin.ng]

From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

Intel Agilex5 address bus only supports up to 40 bits. Add dma-bit-mask
property support where configure dma-bit-mask based on dma-bit-mask
property or fallback to default value if property is not present.

Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>

v3:
-update to read from updated property name.

v2:
-Fix build errors and warning
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index b23536645ff7..e56ff7aadafd 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -265,13 +265,23 @@ static inline bool axi_chan_is_hw_enable(struct axi_dma_chan *chan)
 static void axi_dma_hw_init(struct axi_dma_chip *chip)
 {
 	int ret;
-	u32 i;
+	u32 i, tmp;
 
 	for (i = 0; i < chip->dw->hdata->nr_channels; i++) {
 		axi_chan_irq_disable(&chip->dw->chan[i], DWAXIDMAC_IRQ_ALL);
 		axi_chan_disable(&chip->dw->chan[i]);
 	}
-	ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(64));
+
+	ret = device_property_read_u32(chip->dev, "snps,dma-addressable-bits", &tmp);
+	if (ret)
+		ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(64));
+	else {
+		if (tmp == 0 || tmp < 32 || tmp > 64)
+			dev_err(chip->dev, "Invalid dma bit mask\n");
+
+		ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(tmp));
+	}
+
 	if (ret)
 		dev_warn(chip->dev, "Unable to set coherent mask\n");
 }
-- 
2.49.GIT

Re: [PATCH v3 4/4] dma: dw-axi-dmac: Add support for dma-bit-mask property

[Vinod Koul]

On 16-06-25, 22:40, adrianhoyin.ng@altera.com wrote:
> From: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>

Please change subsystem tag to dmanegine: xxx

> 
> Intel Agilex5 address bus only supports up to 40 bits. Add dma-bit-mask
> property support where configure dma-bit-mask based on dma-bit-mask
> property or fallback to default value if property is not present.
> 
> Signed-off-by: Adrian Ng Ho Yin <adrianhoyin.ng@altera.com>
> Reviewed-by: Matthew Gerlach <matthew.gerlach@altrera.com>
> 
> v3:
> -update to read from updated property name.
> 
> v2:
> -Fix build errors and warning
> ---
>  drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
> index b23536645ff7..e56ff7aadafd 100644
> --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
> +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
> @@ -265,13 +265,23 @@ static inline bool axi_chan_is_hw_enable(struct axi_dma_chan *chan)
>  static void axi_dma_hw_init(struct axi_dma_chip *chip)
>  {
>  	int ret;
> -	u32 i;
> +	u32 i, tmp;
>  
>  	for (i = 0; i < chip->dw->hdata->nr_channels; i++) {
>  		axi_chan_irq_disable(&chip->dw->chan[i], DWAXIDMAC_IRQ_ALL);
>  		axi_chan_disable(&chip->dw->chan[i]);
>  	}
> -	ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(64));
> +
> +	ret = device_property_read_u32(chip->dev, "snps,dma-addressable-bits", &tmp);
> +	if (ret)
> +		ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(64));
> +	else {
> +		if (tmp == 0 || tmp < 32 || tmp > 64)
> +			dev_err(chip->dev, "Invalid dma bit mask\n");
> +
> +		ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(tmp));

why not check the mask value and set that only once irrespective of
mask, it can tmp or 64!

-- 
~Vinod