linux-kernel - [PATCH v5 0/9] Add lemans(sa8775p) camss support

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Message-ID: <20250814101615.1102795-1-quic_vikramsa@quicinc.com>
Date: Thu, 14 Aug 2025 15:46:06 +0530
From: Vikram Sharma <quic_vikramsa@...cinc.com>
To: <rfoss@...nel.org>, <todor.too@...il.com>, <bryan.odonoghue@...aro.org>,
        <mchehab@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <hverkuil-cisco@...all.nl>,
        <cros-qcom-dts-watchers@...omium.org>, <catalin.marinas@....com>,
        <will@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <quic_svankada@...cinc.com>,
        <quic_vikramsa@...cinc.com>, <linux-media@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v5 0/9] Add lemans(sa8775p) camss support

From: Vikram Sharma <vikramsa@....qualcomm.com>

Lemans is a Qualcomm SoC. Previously referred to as SA8775P. This series adds
bindings and devicetree to bring up CSIPHY, TPG, CSID, VFE/RDI interfaces
in Lemans.

Lemans provides
- 2 x VFE, 3 RDI per VFE
- 5 x VFE Lite, 6 RDI per VFE
- 2 x CSID
- 5 x CSID Lite
- 3 x TPG
- 4 x CSIPHY

Changes in v5:
- Update commit texts for almost all the patches to refer sa8775p soc
  as lemans. This is required because sa8775p.dtsi is now changed to
  lemans.dtsi for IOT platforms.
  Name change is done as per:
  https://lore.kernel.org/all/20250803110113.401927-1-wasim.nazir@oss.qualcomm.com/
- Link to v4:
  https://lore.kernel.org/all/20250807121105.710072-1-quic_vikramsa@quicinc.com/

Changes in v4 compared to v3:
- Bindings and Device Tree: Reordered the csid_wrapper to be the first
  entry in the register list. (Suggested by Bryan)
- CSIPHY Driver: Added comments indicating the CSIPHY process node number.
- VFE Configuration: Defined bit fields for vfe_top_core_cfg.
- Clock Optimization: Trimmed down the clock list for VFE.
- Cleanup: Removed newly added deadlines from the CSIPHY, CSID, and VFE
  files.
- Link to v3:
  https://lore.kernel.org/all/20250703171938.3606998-1-quic_vikramsa@quicinc.com/

Changes compared to v2:
- Renaming camss-vfe-780.c to camss-vfe-gen3.c and camss-csid-780 to
  camss-csid-gen3 to avoid code duplication for SA8775P.SA877P have csid
  690 and vfe 690 which is almost same as csid/vfe 780 with very minor
  change in register bitfield.
- Restructure vfe and csid addition to reuse existing files.
- Updated commit text for Bindings patch.
- renamed cpas_ife_lite clock to cpas_vfe_lite. 
- added voltage rails for csiphy in documentation.
- removed sf and icp clocks.
- removed sf_0 interconnect.
- Link to v2:
  https://lore.kernel.org/linux-arm-msm/20250427070135.884623-1-quic_vikramsa@quicinc.com/

Changes compared to v1:
- Renaming camss-vfe-780.c to camss-vfe-gen2.c and camss-csid-780 to
  camss-csid-gen3 to avoid code duplication for SA8775P.SA877P have csid
  690 and vfe 690 which is almost same as csid/vfe 780 with very minor
  change in register bitfield.
- Restructure vfe and csid addition to reuse existing files.
- Updated cisd-lite and vfe-lite interuppt names.
- add enumeration changes as seprate patch. 
- Update required fileds in bindings.
- Link to v1:
  DT: https://lore.kernel.org/linux-arm-msm/20250210155605.575367-1-quic_vikramsa@quicinc.com/
  Driver: https://lore.kernel.org/linux-media/20250210162843.609337-1-quic_vikramsa@quicinc.com/

Sanity check for these patches:
- checkpatch.pl
- Smatch: make CHECK="smatch --full-path" M=drivers/media/platform/qcom/camss/
- Sparse: make C=2 M=drivers/media/platform/qcom/camss/
- make -j32 W=1

We have tested this on qcs9100-ride board with 'Test Pattern Generator'
https://lore.kernel.org/all/20250717-lemans_tpg-v2-0-a2538659349c@quicinc.com/

A rebased version of the TPG driver, built on top of this series, will be
shared as v3 in a follow-up post.

Vikram Sharma (9):
  media: qcom: camss: Rename camss-csid-780.c to camss-csid-gen3.c
  media: qcom: camss: Rename camss-vfe-780.c to camss-vfe-gen3.c
  media: dt-bindings: Add qcom,sa8775p-camss compatible
  media: qcom: camss: Add qcom,sa8775p-camss compatible
  media: qcom: camss: Add support for CSIPHY (v1.3.0)
  media: qcom: camss: Add support for CSID 690
  media: qcom: camss: Add support for VFE 690
  media: qcom: camss: Enumerate resources for lemans(sa8775p)
  arm64: dts: qcom: lemans: Add support for camss

 .../bindings/media/qcom,sa8775p-camss.yaml    | 361 +++++++++++++++
 arch/arm64/boot/dts/qcom/lemans.dtsi          | 185 ++++++++
 drivers/media/platform/qcom/camss/Makefile    |   4 +-
 .../{camss-csid-780.c => camss-csid-gen3.c}   |  33 +-
 .../{camss-csid-780.h => camss-csid-gen3.h}   |   8 +-
 .../media/platform/qcom/camss/camss-csid.h    |   2 +-
 .../qcom/camss/camss-csiphy-3ph-1-0.c         |  84 ++++
 .../{camss-vfe-780.c => camss-vfe-gen3.c}     |  75 ++-
 drivers/media/platform/qcom/camss/camss-vfe.c |   5 +-
 drivers/media/platform/qcom/camss/camss-vfe.h |   2 +-
 drivers/media/platform/qcom/camss/camss.c     | 428 +++++++++++++++++-
 drivers/media/platform/qcom/camss/camss.h     |   1 +
 12 files changed, 1138 insertions(+), 50 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/qcom,sa8775p-camss.yaml
 rename drivers/media/platform/qcom/camss/{camss-csid-780.c => camss-csid-gen3.c} (89%)
 rename drivers/media/platform/qcom/camss/{camss-csid-780.h => camss-csid-gen3.h} (84%)
 rename drivers/media/platform/qcom/camss/{camss-vfe-780.c => camss-vfe-gen3.c} (70%)

Signed-off-by: Vikram Sharma <quic_vikramsa@...cinc.com>
-- 
2.25.1