diff options
| author | Khairul Anuar Romli <khairul.anuar.romli@altera.com> | 2025-12-29 11:49:02 +0800 |
|---|---|---|
| committer | Dinh Nguyen <dinguyen@kernel.org> | 2026-01-30 09:27:12 -0600 |
| commit | 4e6e93dfd501a16650806e7a39aa7b5203867276 (patch) | |
| tree | e79893d1a00a7765417b85136e0e0c4aab7d1a7c | |
| parent | e0f489a52a1a5f9a9ce745feec95d0b517b8d6e9 (diff) | |
arm64: dts: intel: agilex5: Add simple-bus node on top of dma controller node
Move dma-controller node under simple-bus node to allow bus node specific
property able to be properly defined. This is require to fulfill Agilex5
bus limitation that is limited to 40-addressable-bit.
Update the compatible string for the DMA controller nodes in the Agilex5
device tree from the generic "snps,axi-dma-1.01a" to the platform-specific
"altr,agilex5-axi-dma". Add fallback capability to ensure driver is able
to initialize properly.
This change enables the use of platform-specific features and constraints
in the driver, such as setting a 40-bit DMA addressable mask through
dma-ranges, which is required for Agilex5. It also aligns with the updated
device tree bindings and driver support for this compatible string.
Signed-off-by: Khairul Anuar Romli <khairul.anuar.romli@altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
| -rw-r--r-- | arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi | 78 |
1 files changed, 43 insertions, 35 deletions
diff --git a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi index a98bd23c3fa2..352c96d144a8 100644 --- a/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi +++ b/arch/arm64/boot/dts/intel/socfpga_agilex5.dtsi @@ -324,42 +324,50 @@ #size-cells = <1>; }; - dmac0: dma-controller@10db0000 { - compatible = "snps,axi-dma-1.01a"; - reg = <0x10db0000 0x500>; - clocks = <&clkmgr AGILEX5_L4_MAIN_CLK>, - <&clkmgr AGILEX5_L4_MP_CLK>; - clock-names = "core-clk", "cfgr-clk"; - interrupt-parent = <&intc>; - interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; - #dma-cells = <1>; - dma-channels = <4>; - snps,dma-masters = <1>; - snps,data-width = <2>; - snps,block-size = <32767 32767 32767 32767>; - snps,priority = <0 1 2 3>; - snps,axi-max-burst-len = <8>; - iommus = <&smmu 8>; - dma-coherent; - }; + dma: dma-bus@10db0000 { + compatible = "simple-bus"; + #address-cells = <1>; + #size-cells = <2>; + ranges = <0x00 0x10db0000 0x00 0x20000>; + dma-ranges = <0x00 0x00 0x100 0x00>; + + dmac0: dma-controller@0 { + compatible = "altr,agilex5-axi-dma", + "snps,axi-dma-1.01a"; + reg = <0x0 0x0 0x500>; + clocks = <&clkmgr AGILEX5_L4_MAIN_CLK>, + <&clkmgr AGILEX5_L4_MP_CLK>; + clock-names = "core-clk", "cfgr-clk"; + interrupt-parent = <&intc>; + interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>; + #dma-cells = <1>; + dma-channels = <4>; + snps,dma-masters = <1>; + snps,data-width = <2>; + snps,block-size = <32767 32767 32767 32767>; + snps,priority = <0 1 2 3>; + snps,axi-max-burst-len = <8>; + iommus = <&smmu 8>; + }; - dmac1: dma-controller@10dc0000 { - compatible = "snps,axi-dma-1.01a"; - reg = <0x10dc0000 0x500>; - clocks = <&clkmgr AGILEX5_L4_MAIN_CLK>, - <&clkmgr AGILEX5_L4_MP_CLK>; - clock-names = "core-clk", "cfgr-clk"; - interrupt-parent = <&intc>; - interrupts = <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH>; - #dma-cells = <1>; - dma-channels = <4>; - snps,dma-masters = <1>; - snps,data-width = <2>; - snps,block-size = <32767 32767 32767 32767>; - snps,priority = <0 1 2 3>; - snps,axi-max-burst-len = <8>; - iommus = <&smmu 9>; - dma-coherent; + dmac1: dma-controller@10000 { + compatible = "altr,agilex5-axi-dma", + "snps,axi-dma-1.01a"; + reg = <0x10000 0x0 0x500>; + clocks = <&clkmgr AGILEX5_L4_MAIN_CLK>, + <&clkmgr AGILEX5_L4_MP_CLK>; + clock-names = "core-clk", "cfgr-clk"; + interrupt-parent = <&intc>; + interrupts = <GIC_SPI 171 IRQ_TYPE_LEVEL_HIGH>; + #dma-cells = <1>; + dma-channels = <4>; + snps,dma-masters = <1>; + snps,data-width = <2>; + snps,block-size = <32767 32767 32767 32767>; + snps,priority = <0 1 2 3>; + snps,axi-max-burst-len = <8>; + iommus = <&smmu 9>; + }; }; rst: rstmgr@10d11000 { |