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Thu, 14 Aug 2025 22:18:15 -0700 (PDT) From: Guodong Xu Date: Fri, 15 Aug 2025 13:16:28 +0800 Subject: [PATCH v4 6/8] riscv: dts: spacemit: Add PDMA node for K1 SoC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250815-working_dma_0701_v2-v4-6-62145ab6ea30@riscstar.com> References: <20250815-working_dma_0701_v2-v4-0-62145ab6ea30@riscstar.com> In-Reply-To: <20250815-working_dma_0701_v2-v4-0-62145ab6ea30@riscstar.com> To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , duje@dujemihanovic.xyz Cc: Alex Elder , Vivian Wang , dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, Guodong Xu , Troy Mitchell X-Mailer: b4 0.14.2 Add PDMA dma-controller node under dma_bus for SpacemiT K1 SoC. The PDMA node is marked as disabled by default, allowing board-specific device trees to enable it as needed. Signed-off-by: Guodong Xu Reviewed-by: Troy Mitchell --- v4: - rename the node from pdma0 to pdma - for consistnecy, put the "interrupts" after "clocks" and "resets" v3: - adjust pdma0 position, ordering by device address - update properties according to the newly created schema binding v2: - Updated the compatible string. - Rebased. Part of the changes in v1 is now in this patchset: - "riscv: dts: spacemit: Add DMA translation buses for K1" - Link: https://lore.kernel.org/all/20250623-k1-dma-buses-rfc-wip-v1-0-c= 0144082061f@iscas.ac.cn/ --- arch/riscv/boot/dts/spacemit/k1.dtsi | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spa= cemit/k1.dtsi index abde8bb07c95c5a745736a2dd6f0c0e0d7c696e4..861f0fe18083fa158da51bd3be2= 808609f6233f4 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -660,6 +660,17 @@ dma-bus { dma-ranges =3D <0x0 0x00000000 0x0 0x00000000 0x0 0x80000000>, <0x1 0x00000000 0x1 0x80000000 0x3 0x00000000>; =20 + pdma: dma-controller@d4000000 { + compatible =3D "spacemit,k1-pdma"; + reg =3D <0x0 0xd4000000 0x0 0x4000>; + clocks =3D <&syscon_apmu CLK_DMA>; + resets =3D <&syscon_apmu RESET_DMA>; + interrupts =3D <72>; + dma-channels =3D <16>; + #dma-cells=3D <1>; + status =3D "disabled"; + }; + uart0: serial@d4017000 { compatible =3D "spacemit,k1-uart", "intel,xscale-uart"; --=20 2.43.0