linux-kernel - [PATCH 0/2] Add ADSP and CDSP support on Kaanapali SoC

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Message-Id: <20250924-knp-fastrpc-v1-0-4b40f8bfce1d@oss.qualcomm.com>
Date: Wed, 24 Sep 2025 16:46:35 -0700
From: Jingyi Wang <jingyi.wang@....qualcomm.com>
To: Srinivas Kandagatla <srini@...nel.org>,
        Amol Maheshwari <amahesh@....qualcomm.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: aiqun.yu@....qualcomm.com, tingwei.zhang@....qualcomm.com,
        trilok.soni@....qualcomm.com, yijie.yang@....qualcomm.com,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Jingyi Wang <jingyi.wang@....qualcomm.com>,
        Kumari Pallavi <kumari.pallavi@....qualcomm.com>
Subject: [PATCH 0/2] Add ADSP and CDSP support on Kaanapali SoC

Introduces support for new DSP IOVA formatting and hardware-specific
configuration required to enable ADSP and CDSP functionality on the
Kaanapali SoC.

Add support for a new IOVA formatting scheme by adding an `iova_format
flag to the DSP driver. This flag standardizes the placement of the stream
ID (SID) within the physical address, which is required for DSPs to operate
correctly on Kaanapali. DSP currently supports 32-bit IOVA
(32-bit PA + 4-bit SID) for both Q6 and user DMA (uDMA) access. This is
being upgraded to 34-bit PA + 4-bit SID due to a hardware revision in CDSP
for Kaanapali SoC, which expands the DMA addressable range. To support CDSP
operation, the series updates the DMA mask configuration to reflect the
expanded DMA addressable range.

Signed-off-by: Jingyi Wang <jingyi.wang@....qualcomm.com>
---
Kumari Pallavi (2):
      misc: fastrpc: Add support for new DSP IOVA formatting
      misc: fastrpc: Update dma_mask for CDSP support on Kaanapali SoC

 drivers/misc/fastrpc.c | 86 ++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 76 insertions(+), 10 deletions(-)
---
base-commit: ae2d20002576d2893ecaff25db3d7ef9190ac0b6
change-id: 20250918-knp-fastrpc-a1479674d113

Best regards,
-- 
Jingyi Wang <jingyi.wang@....qualcomm.com>