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Tue, 17 Feb 2026 10:10:04 -0800 (PST) X-Received: by 2002:a05:6a20:6a10:b0:38d:efca:1be3 with SMTP id adf61e73a8af0-3946c8bfed4mr12901116637.37.1771351803400; Tue, 17 Feb 2026 10:10:03 -0800 (PST) Received: from [192.168.0.172] ([49.205.251.126]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c6e79efc83asm4004434a12.5.2026.02.17.10.09.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Feb 2026 10:10:03 -0800 (PST) Message-ID: Date: Tue, 17 Feb 2026 23:39:53 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/7] media: dt-bindings: qcom-kaanapali-iris: Add kaanapali video codec binding To: Dmitry Baryshkov Cc: Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Saravana Kannan , Joerg Roedel , Will Deacon , Robin Murphy , Stefan Schmidt , Hans Verkuil , Krzysztof Kozlowski , Vishnu Reddy , Hans Verkuil , linux-arm-msm@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, Bryan O'Donoghue References: <20260126-kaanapali-iris-v1-0-e2646246bfc1@oss.qualcomm.com> <20260126-kaanapali-iris-v1-1-e2646246bfc1@oss.qualcomm.com> <5170c5df-e22e-46c0-9713-3c4e7bbdbf63@oss.qualcomm.com> Content-Language: en-US From: Vikash Garodia In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE3MDE0OCBTYWx0ZWRfXwZDel5PhYh5a sj80urtVqrhSYcLwjrJ2Tkzi0NfzV6lcVXcM+pWrS1fN0aCKnlM02f5imk2sYM/ajUo4Gm1+vxe /5Pskjz50scPC6vnkN4a1u3felLRCBCDJuiib1n01X2itRQeA41MjDlQoV2lwPPN4aLwg/uXJ1x CxWN/kyTL7BhZICHc58OglX0QejZM3fKnCiyvCHyJklmWTR50WBtgvpmJK24l7njJjmZz1KbI7V l0/4ihRCXPEFRgbQsFjt8Qx5M2WRJUtGRNrp39YRbdF4POp2tAG+0YeQYxS0OvkHlL6k2Rx6EGM GsQpZhb5HwnvQOY7A8gAFzBWtRZC5+TpDYv3tfxpZK/e2gnjc510X038+HDc0WJOKrQ+X1X6iR8 +JpEQ3s9Siw34sE9RnZrGqctxrPVr6mqMJzdWIgAPMRac8SZoR2cKn5BShr3UTmkO4B2twYoN2u lWf6OqAV6KDZBsb67ZQ== X-Authority-Analysis: v=2.4 cv=b+G/I9Gx c=1 sm=1 tr=0 ts=6994aefc cx=c_pps a=oF/VQ+ItUULfLr/lQ2/icg==:117 a=ExRUKzOVRX24zF/T6h5B5A==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=NEAV23lmAAAA:8 a=EUspDBNiAAAA:8 a=CVEAFZvZQY1BmYoe21sA:9 a=QEXdDO2ut3YA:10 a=3WC7DwWrALyhR5TkjVHa:22 X-Proofpoint-GUID: cLHymMoEYJi9zhA66C9Su5lIkVT6_JeH X-Proofpoint-ORIG-GUID: cLHymMoEYJi9zhA66C9Su5lIkVT6_JeH X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-17_03,2026-02-16_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 bulkscore=0 impostorscore=0 adultscore=0 phishscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602170148 On 2/17/2026 9:45 PM, Dmitry Baryshkov wrote: > On Tue, Feb 17, 2026 at 09:04:52PM +0530, Vikash Garodia wrote: >> >> On 2/17/2026 8:06 PM, Dmitry Baryshkov wrote: >>> On Tue, Feb 17, 2026 at 07:13:39PM +0530, Vikash Garodia wrote: >>>> >>>> On 1/27/2026 8:39 PM, Dmitry Baryshkov wrote: >>>>> On Mon, Jan 26, 2026 at 05:55:44PM +0530, Vikash Garodia wrote: >>>>>> Kaanapali SOC brings in the new generation of video IP i.e iris4. When >>>>>> compared to previous generation, iris3x, it has, >>>>>> - separate power domains for stream and pixel processing hardware blocks >>>>>> (bse and vpp). >>>>>> - additional power domain for apv codec. >>>>>> - power domains for individual pipes (VPPx). >>>>>> - different clocks and reset lines. >>>>>> >>>>>> iommu-map include all the different stream-ids which can be possibly >>>>>> generated by vpu4 hardware. >>>>> >>>>> It's not how it can be defined. >>>> >>>> Do you mean to elaborate the different entries within iommu-map or to >>>> elaborate the different stream ids and how they are grouped into different >>>> functions ? >>> >>> The comment was sent three weeks ago. >> >> yeah, if you could still recollect, you can comment. > > I think it was more about 'stream IDs for pixel, secure, no-pixel, > firmware, buffers, non-buffers and direct insight into the VPU memory' > (pure example, as you can guess). > >> >>> >>>> >>>>> >>>>>> >>>>>> Signed-off-by: Vikash Garodia >>>>>> --- >>>>>> .../bindings/media/qcom,kaanapali-iris.yaml | 234 +++++++++++++++++++++ >>>>>> 1 file changed, 234 insertions(+) >>>>>> >>>>>> + >>>>>> + iommu-map: true >>>>> >>>>> This is totally underspecifified. >>>> >>>> oneof would be a better approach describing the possible stream-ids. >>> >>> oneOf of what? It is items with the definition of each item. >> >> something like below, >> >> properties: >> iommu-map: >> description: | >> List of IOMMU stream IDs corresponding to hardware function IDs. >> The number of entries depends on the SoC variant. > > Do we again have a story of variable number of entries for the single > Kaanapali platform? its for firmware stream-ID, which can be managed by kernel or Gunyah. Handling for it now would ensure we do not have to change the binding later when there is a need. > >> type: array >> oneOf: >> - minItems: 8 >> maxItems: 8 >> items: >> type: integer >> description: IOMMU stream IDs >> >> - minItems: 9 >> maxItems: 9 >> items: >> type: integer >> description: IOMMU stream IDs >>> >>>> >>>>> >>>>>> + >>>>>> + memory-region: >>>>>> + maxItems: 1 >>>>>> + >>>>> >>>>>> + >>>>>> + iommu-map = <0x100 &apps_smmu 0x1940 0x0 0x1>, >>>>>> + <0x100 &apps_smmu 0x1a20 0x0 0x1>, >>>>>> + <0x100 &apps_smmu 0x1944 0x0 0x1>, >>>>>> + <0x101 &apps_smmu 0x1943 0x0 0x1>, >>>>>> + <0x200 &apps_smmu 0x1941 0x0 0x1>, >>>>>> + <0x200 &apps_smmu 0x1a21 0x0 0x1>, >>>>>> + <0x201 &apps_smmu 0x1945 0x0 0x1>, >>>>>> + <0x202 &apps_smmu 0x1946 0x0 0x1>, >>>>>> + <0x300 &apps_smmu 0x1a22 0x0 0x1>; >>>>> >>>>> #define the functions in the ABI, provide them in the bindings. >>>> >>>> Ack. will introduce a new header at [1] and define these functions >>>> >>>> [1] https://github.com/torvalds/linux/tree/master/include/dt-bindings/media >>>> >>>> Regards, >>>> Vikash >>>> >>>>> >>>>>> + >>>>> >>>> >>> >> >