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Thu, 26 Mar 2026 16:18:16 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 2742092535896640534 EX-QQ-RecipientCnt: 20 From: Troy Mitchell Date: Thu, 26 Mar 2026 16:17:20 +0800 Subject: [PATCH v2 5/7] dmaengine: mmp_pdma: add Spacemit K3 support 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: <20260326-k3-pdma-v2-5-ca94ca7bb595@linux.spacemit.com> References: <20260326-k3-pdma-v2-0-ca94ca7bb595@linux.spacemit.com> In-Reply-To: <20260326-k3-pdma-v2-0-ca94ca7bb595@linux.spacemit.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan , Vinod Koul , Frank Li , Guodong Xu , Michael Turquette , Stephen Boyd Cc: devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-clk@vger.kernel.org, Troy Mitchell X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1774513072; l=1936; i=troy.mitchell@linux.spacemit.com; s=20250710; h=from:subject:message-id; bh=naSKBQlGCncc4Sjkd1TAFqDT0cym6ceyGaNaHvhlkkc=; b=gzJG1oV5yaKVjrZQyaBxqKdVvf3DXkLlZJXiJ6LDHZaazSTBBENlrpMm4+JzvfVmKEqLNfO9A FO8Grnpb3geBPvBnhnIpDxbA7MB8QodonXiw/6I0nZyk7cV85pNWkNZ X-Developer-Key: i=troy.mitchell@linux.spacemit.com; a=ed25519; pk=lQa7BzLrq8DfZnChqmwJ5qQk8fP2USmY/4xZ2/MSsXc= X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpgz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: NPmDtcYUnVcgDA3jFcLvldAQHB9ct0G//ElTaAQLtiYFncMVSdyaP4Tu LfIcKCVVmXX8FXTWf76ANeaklFp1zWXrNXsHbaMVNrb8TN66qPHJzEDw+nI9B+BVY+odu3d kbbjFXN4p6P9QoLdlVujO2EF1vWAUX5VF/DczETzXcDjxsldS7aksh6G6xD2C9aT6pYpjWI zjhGliYC3u9rYMtVNggUwBj0ao7Oz1jzUgBVS1s61O9r5enjzmUlP5G9tRDs1Wz6Wp4k8pX qd3QuLN8ZXeRlLJLkCsxMlrhFOdgTb05cD5rNXyO8bZN0Muq7577oW6ksPXuYUN9YtORz9T e+D35c9nyeV3taU5fmBMSxjJMrR4K4m8EGHlAvxElXTVo1kVRF4bb2PE/RoPb+AbD5Z8QC5 C0qGqBich+fvg5VyB3K9MaI13NCGZL2uvrE0OHDST1Ouq4S4OBoMZUZTS0RR7Vfgr7HsesZ OA7dUodRF/AgmG9WPvXMnC1N2qIHbz1Opl4BeUHq7uEEuomdudYKGPClY8hzhDMIp0IiTeY zR+k1K0yym54Idacx85abH9wK0L17nAeAri5Uz+35lyY5LdSJ88WMyOALGCV511wA+DK7Bc TRN8TmvQU/T58JSAobED/5LZviw+uFTzrUbHpqF4vpFCIPb0Tl1qHDWGU6o76ZA+lH+yo3i u0b9MGOVqRpIlsM3JrEzZHsQMWc1PPp//jiPgykkZMKBWRB3HdG7PFKoHYeLZcYfs27XseU 1Ub54G+30SzXo2jGVWkA4l+aEjFrwtxs3oTBkykNy4Ri1hIf4gOZaAWijXsz58C0qocVHMR cqeZjHNE/izLUPERuadaeH7igb1vuLDHjLF/wQz3u2ZyhMuwjIm43NJI291Ul5ZVEpGZAwq /j/ps+OCYJ+iaCsng4w48NM7vCjCI1ZDtj0gJyuVcRyzt1WVpWKizwQP3YKK6LyNg80f8Dl BsC05OrSstaa5CbcbkU0larwN6PsBLVop1TloghTKZJ+663QXeCjsIn1viRZa2v61JK5gtp Pg/NwDr2jqMvLwu/hHdeGorE3ghrNNJ7TXg13Ts/A6FksBD/uN8TmOWLMzkx7EJ7YR6UHOD Upqtxh2MzExBO7kVNq//8WFD9LCgUpTQYoGHU8Y5l4u X-QQ-XMRINFO: NI4Ajvh11aEjEMj13RCX7UuhPEoou2bs1g== X-QQ-RECHKSPAM: 0 From: Guodong Xu SpacemiT K3 reuses most of the PDMA IP design found on K1, with one differe= nce being the extended DRCMR base address. This patch adds "spacemit,k3-pdma" compatible string and it defines a new mmp_pdma_ops for k3 pdma. Signed-off-by: Guodong Xu Signed-off-by: Troy Mitchell --- drivers/dma/mmp_pdma.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index 6112369006ee..386e85cd4882 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -52,6 +52,7 @@ #define DCSR_EORINTR BIT(9) /* The end of Receive */ =20 #define DRCMR_BASE 0x0100 +#define DRCMR_EXT_BASE_K3 0x1000 #define DRCMR_EXT_BASE_DEFAULT 0x1100 #define DRCMR_REQ_LIMIT 64 #define DRCMR_MAPVLD BIT(7) /* Map Valid (read / write) */ @@ -1207,6 +1208,20 @@ static const struct mmp_pdma_ops spacemit_k1_pdma_op= s =3D { .drcmr_ext_base =3D DRCMR_EXT_BASE_DEFAULT, }; =20 +static const struct mmp_pdma_ops spacemit_k3_pdma_ops =3D { + .write_next_addr =3D write_next_addr_64, + .read_src_addr =3D read_src_addr_64, + .read_dst_addr =3D read_dst_addr_64, + .set_desc_next_addr =3D set_desc_next_addr_64, + .set_desc_src_addr =3D set_desc_src_addr_64, + .set_desc_dst_addr =3D set_desc_dst_addr_64, + .get_desc_src_addr =3D get_desc_src_addr_64, + .get_desc_dst_addr =3D get_desc_dst_addr_64, + .run_bits =3D (DCSR_RUN | DCSR_LPAEEN | DCSR_EORIRQEN | DCSR_EORSTOPEN), + .dma_width =3D 64, + .drcmr_ext_base =3D DRCMR_EXT_BASE_K3, +}; + static const struct of_device_id mmp_pdma_dt_ids[] =3D { { .compatible =3D "marvell,pdma-1.0", @@ -1214,6 +1229,9 @@ static const struct of_device_id mmp_pdma_dt_ids[] = =3D { }, { .compatible =3D "spacemit,k1-pdma", .data =3D &spacemit_k1_pdma_ops + }, { + .compatible =3D "spacemit,k3-pdma", + .data =3D &spacemit_k3_pdma_ops }, { /* sentinel */ } --=20 2.53.0