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Tue, 31 Mar 2026 16:27:25 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 10790581914033576037 EX-QQ-RecipientCnt: 20 From: Troy Mitchell Date: Tue, 31 Mar 2026 16:27:06 +0800 Subject: [PATCH v3 3/5] 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: <20260331-k3-pdma-v3-3-a4e60dd8b4b3@linux.spacemit.com> References: <20260331-k3-pdma-v3-0-a4e60dd8b4b3@linux.spacemit.com> In-Reply-To: <20260331-k3-pdma-v3-0-a4e60dd8b4b3@linux.spacemit.com> To: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Guodong Xu , Michael Turquette , Stephen Boyd , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: dmaengine@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@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=1774945629; l=1936; i=troy.mitchell@linux.spacemit.com; s=20250710; h=from:subject:message-id; bh=naSKBQlGCncc4Sjkd1TAFqDT0cym6ceyGaNaHvhlkkc=; b=JzGVaBB9r087s/TJzpcykTwUhsUXS625HWzNd/4ybcfN3ErXRVU9yKPkhbgiyil8P6xuBcEyD eVJV4BQITBlCzPy4HYXt29gmevZnEQgyo9UbEE4MPy6Ad8BxcDmePhV X-Developer-Key: i=troy.mitchell@linux.spacemit.com; a=ed25519; pk=lQa7BzLrq8DfZnChqmwJ5qQk8fP2USmY/4xZ2/MSsXc= X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: M/gYBZzTb9iML1mczemgHAV4c/FA4lQRCwpRf3EriTxc/nN/foLPyfek pv6QjtWdKn+sS1V9lZ12k1G78L40lijqvLBsf43f0w/zwmTsFfJULhdUegHnnF9SN89lyrb IusU0mnX+BQgesw2Lq+lLw3UEAmGtHt7rnbQddm1djj2xWLSQaa2PfwWctu8W5mMpszdCOK pwPqkKuZ7AFov6U3lfBOkebfYKp8BspnGGUO4aWL7s3vuH8/7nhd4VgY+SX8yB8bapa9txo 4s4dOOdVVXMgMClrG31gRU8Fpx065ahhuS+9Wich/BX7Ifnq0Em/60xuoE/Ewb4AXlNo8Z/ fDpFd7hp4XTIgGS8EPIV+N07pP74jDf+2chwqM94v18ttGBfyEZ015x/L6+w5bK9tFwbQcW OK8Id6QaW09Sch6iyrAAIxKjkn8iyZSw7nXVBC+aAjp0KVK8OX8d+blHmp6A30LfWCVxs4q LXHkqsN9H9nGBrOMCegM+IFibwPh5jNDOgnMCiEzkU4Euh8z3x95DVwppzDaEVF6YSApVvi MUPUuk1PnYtN0xHJo1FVJNtNt8hTbkYrh2SMrTNxsxI3MT9TlnJzpc9Ik/SaG1rhpOWGD4X c/1h7LMQVSMuzTKPjnE1vS3rH+tpQBai8XA5sMlkmr3HKtcd3RPP7YM8Op1tCGwuRMBfWDI 5Ziv7Jg/NOt54owx4I2mWld8KQyyOjViCz15YL/MuWF1xIrw4Z0BKdVShjBm7ZdiEdxX9V4 cNVAPd3SWU/ukl7tyUNLR813QHq9TBUSPcvRNG//PCdJ4AmJ8cmOfmTyWC+tNQhbKHZ7XqH aArOlg8y9C3BevlTjKGdc+IQgUaGHK3TOQlZEoeCVOuMwbiJEJ0skPztwCIqazlt7faj2o/ r8THwBzIGtFjWvVwwxuZ9DDD7upGJN/4fFSri/190cWUBd/+rWRt0iOOYJCfAFo+WEesVzh N32U0BAK5WWQKmODQ5Xc2Pei8e+Gr0VsggGSO548KNjzD2HhAzEftdZmkhO6QkR8S7T6JzQ wGHZIRgtiUS7rWTuHJDiEtLhOEvCtXtx9oZv/UxuIxOefgqDAl5tnCFjeygZBtsrgIKfHVP engg9OVPewgjEnd2sq2gBHufNGgqu6pRThvWd7KXGK0Nzn4PY8RghaLg684GzCTfWvpGgcv ePFK X-QQ-XMRINFO: M/715EihBoGS47X28/vv4NpnfpeBLnr4Qg== 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