Re: [PATCH 0/2] arm64: dts: qcom: add CDSP FastRPC extended context bank

[Vinayak Katoch]

On 10/12/2026 6:33 PM, Konrad Dybcio wrote:
> On 10/7/26 5:54 PM, Vinayak Katoch wrote:
>> Wire up the dedicated CDSP extended context bank on kaanapali and
>> glymur, enabling buffer mappings beyond the standard 34-bit IOVA limit.
>>
>> The FastRPC driver identifies an extended context bank by the presence
>> of iommu-ranges on the compute-cb node. Each patch adds
>> iommu-ranges = <0x4 0x0 0xfc 0x0> on the designated compute-cb,
>> restricting IOVA allocations to the [16 GiB, ~1 TiB) window. The
>> fastrpc and glink ancestor nodes are bumped to #address-cells = <2>
>> and #size-cells = <2> to accommodate 64-bit iommu-ranges values, and
>> all existing compute-cb reg entries are updated to the four-cell format.
>>
>> Signed-off-by: Vinayak Katoch <vinayak.katoch@xxxxxxxxxxxxxxxx>
>> ---
>> Vinayak Katoch (2):
>>       arm64: dts: qcom: kaanapali: add CDSP FastRPC extended context bank
>>       arm64: dts: qcom: glymur: add CDSP FastRPC extended context bank
>>
>>  arch/arm64/boot/dts/qcom/glymur.dtsi    | 31 ++++++++++++++++++-------------
>>  arch/arm64/boot/dts/qcom/kaanapali.dtsi | 29 +++++++++++++++++------------
>>  2 files changed, 35 insertions(+), 25 deletions(-)
>> ---
>> base-commit: 5c4d4169604b335c38bbc79bc1fc03042981fc6f
>> change-id: 20261006-extended-mapping-dts-f60dbc6221aa
>> prerequisite-change-id: 20260609-dup-sessions-ea2acaac1994:v5
>> prerequisite-patch-id: 425dc9414848bbc3f2a053d067195d849898e2ae
>> prerequisite-patch-id: 4fea14b47d11a5a3e18065d8cf3a461841ee2b86
>> prerequisite-patch-id: da0a3d55397a522ea4b77769e387df9faea8e024
>> prerequisite-change-id: 20260826-extended-mapping-9b08b0c3108d:v2
>> prerequisite-patch-id: 7fe093060212472237ebfaf12413fa38d662e5b7
>> prerequisite-patch-id: 86acb1e79d10600734d07152dbbc3010977b85f8
>> prerequisite-patch-id: 08da00c4dcbf2e77ba217676bf93daee78c20e79
>> prerequisite-patch-id: f6a649d7e73501312402b084adee4b5fb3d83a44
> 
> When you send a series claiming it has hundreds of prerequisites,
> it can not be picked up

fixed in v2

> 
> Konrad