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From: Bryan O'Donoghue <bod@kernel.org>
To: Vishnu Reddy <busanna.reddy@oss.qualcomm.com>,
	Vikash Garodia <vikash.garodia@oss.qualcomm.com>,
	Dikshita Agarwal <dikshita.agarwal@oss.qualcomm.com>,
	Abhinav Kumar <abhinav.kumar@linux.dev>,
	Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	"Joerg Roedel (AMD)" <joro@8bytes.org>,
	Will Deacon <will@kernel.org>,
	Robin Murphy <robin.murphy@arm.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Stanimir Varbanov <stanimir.k.varbanov@gmail.com>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konradybcio@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, iommu@lists.linux.dev,
	devicetree@vger.kernel.org
Subject: Re: [PATCH v8 11/12] arm64: dts: qcom: glymur: Add iris video node
Date: Wed, 10 Jun 2026 09:44:59 +0100	[thread overview]
Message-ID: <383dddd5-be5d-4c8d-bbf0-f889b83af374@kernel.org> (raw)
In-Reply-To: <20260610-glymur-v8-11-1c79b9d51fc0@oss.qualcomm.com>

On 10/06/2026 07:29, Vishnu Reddy wrote:
> +			memory-region = <&video_mem>;

What about the 600 MB limit ?

Lads - please stop pushing new bindings until there's a solution in 
place for that.

Either codify the block Daniel has - which TBH I think is wrong because 
it prohibits allocation < 600 MB for pixel buffers.

Or restrict the IOVAs in the driver _or_ via syntax magic in DT.

Either way we know this is buggy !

---
bod

  reply	other threads:[~2026-06-10  8:45 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-10  6:29 [PATCH v8 00/12] media: iris: Add support for glymur platform Vishnu Reddy
2026-06-10  6:29 ` [PATCH v8 01/12] media: iris: Add iris vpu bus support Vishnu Reddy
2026-06-10  6:46   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 02/12] iommu: Add iris-vpu-bus to iommu_buses Vishnu Reddy
2026-06-10  6:29 ` [PATCH v8 03/12] dt-bindings: media: qcom,glymur-iris: Add glymur video codec Vishnu Reddy
2026-06-10  6:29 ` [PATCH v8 04/12] media: iris: Add context bank hooks for platform specific initialization Vishnu Reddy
2026-06-10  6:40   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 05/12] media: iris: Enable Secure PAS support with IOMMU managed by Linux Vishnu Reddy
2026-06-10  6:45   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 06/12] media: iris: Replace enum-indexed clock and power domain tables with per-block structures Vishnu Reddy
2026-06-10  6:49   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 07/12] media: iris: Add power sequence for glymur Vishnu Reddy
2026-06-10  6:46   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 08/12] media: iris: Handle CPU_CS_SCIACMDARG3 register write via program bootup registers hook Vishnu Reddy
2026-06-10  6:40   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 09/12] media: iris: Add support to select core for dual core platforms Vishnu Reddy
2026-06-10  6:53   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 10/12] media: iris: Add platform data for glymur Vishnu Reddy
2026-06-10  6:54   ` sashiko-bot
2026-06-10  6:29 ` [PATCH v8 11/12] arm64: dts: qcom: glymur: Add iris video node Vishnu Reddy
2026-06-10  8:44   ` Bryan O'Donoghue [this message]
2026-06-10  6:29 ` [PATCH v8 12/12] arm64: dts: qcom: glymur-crd: Enable iris video codec node Vishnu Reddy

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