mbox series

[v3,0/5] Add MPSS remoteproc support for SDX75

Message ID 20240618131342.103995-1-quic_nainmeht@quicinc.com
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Series Add MPSS remoteproc support for SDX75 | expand

Message

Naina Mehta June 18, 2024, 1:13 p.m. UTC 
Add modem support to SDX75 using the PAS remoteproc driver.
Also, add qlink_logging memory region and split MPSS DSM
region into 2 separate regions.

These patches were co-authored by Rohit Agarwal while at
Qualcomm.

Changes in v3:
 - Updated commit message for reserved memory updation for mpss.
 - Link to v2: https://lore.kernel.org/all/20240617093428.3616194-1-quic_nainmeht@quicinc.com/

Changes in v2:
 - Added missing binding for SDX75 to allOf constraints.
 - Updated reserved memory node names to remove underscores.
 - Link to v1: https://lore.kernel.org/all/20240606143858.4026-1-quic_nainmeht@quicinc.com/

Naina Mehta (5):
  dt-bindings: remoteproc: qcom,sm8550-pas: document the SDX75 PAS
  remoteproc: qcom: pas: Add SDX75 remoteproc support
  arm64: dts: qcom: sdx75: update reserved memory regions for mpss
  arm64: dts: qcom: sdx75: Add remoteproc node
  arm64: dts: qcom: sdx75-idp: enable MPSS remoteproc node

 .../bindings/remoteproc/qcom,sm8550-pas.yaml  |  3 +
 arch/arm64/boot/dts/qcom/sdx75-idp.dts        |  6 ++
 arch/arm64/boot/dts/qcom/sdx75.dtsi           | 65 +++++++++++++++++--
 drivers/remoteproc/qcom_q6v5_pas.c            |  1 +
 4 files changed, 71 insertions(+), 4 deletions(-)

Comments

Konrad Dybcio June 26, 2024, 3:42 p.m. UTC | #1 
On 24.06.2024 1:21 PM, Naina Mehta wrote:
> 
> 
> On 6/18/2024 7:08 PM, Konrad Dybcio wrote:
>>
>>
>> On 6/18/24 15:13, Naina Mehta wrote:
>>> Rename qdss@88800000 memory region as qlink_logging memory region
>>> and add qdss_mem memory region at address of 0x88500000.
>>> Split mpss_dsmharq_mem region into 2 separate regions and
>>> reduce the size of mpssadsp_mem region.
>>>
>>> Signed-off-by: Naina Mehta <quic_nainmeht@quicinc.com>
>>> ---
>>
>> Alright, we're getting somewhere. The commit message should however motivate
>> why such changes are necessary. For all we know, the splitting in two is
>> currently done for no reason, as qdss_mem and qlink_logging_mem are contiguous
>> - does the firmware have some expectations about them being separate?
>>
> 
> Since different DSM region size is required for different modem firmware, mpss_dsmharq_mem region being split into 2 separate regions.
> This would provide the flexibility to remove the region which is
> not required for a particular platform.
> qlink_logging is being added at the memory region at the address of
> 0x88800000 as the region is being used by modem firmware.

Ok, now put that in the commit message :)

And I suppose:

"This would provide the flexibility to remove the region which is not
required for a particular platform." - but you still pass both to the
remoteproc in patch 4. Are these regions mutually exclusive?

Konrad