From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 04CCB3126C7; Sat, 27 Dec 2025 12:34:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766838873; cv=none; b=M3piWSqlU/U3GzYh7iE0cFmNm+4d83fCJGMoZ4lpOGR5GrXrC1YVKMWbf6j9DBlsVSCQx6XCfIfs+KqxUCV3snyLgu0KaCOeFKIDeSVDoMohLPxq+MtXvbtyc1+8AY+gD5mC9+JQCMLDxN9rGA0G+rC3ib6Ox7vYImFufi8/LdE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766838873; c=relaxed/simple; bh=6HCYp3y/LUjuszjlwAsie3ZUZ6lnUVx7wWALthdwp+E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=S76BUkGDwO5cDe8b55jeNqXvVVvEecnKkOezdbYVsysZJrE5/cnGXziZ8JblhaXGZjQBjtdBsOy7gvGi2RbUofpNHC8klj2NXVR6e+svBWAdL/P8FpQQrqNm8F8V5utpLYRmCfHgEd8UUzPVxZgMhDYpQTy8rb5Of7h6fiiyQYo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=O46vvCR9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="O46vvCR9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5ACC0C4CEF1; Sat, 27 Dec 2025 12:34:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766838872; bh=6HCYp3y/LUjuszjlwAsie3ZUZ6lnUVx7wWALthdwp+E=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=O46vvCR92jmq8E3o4O8MlM/MtC7tWTTqila3KaTLQCJyGNRiTX+BpXbvRjGA4kHrv mXCeaLHX0uIdESJs1qBz7uJLe+IP6qPK62v1P+8CKzaG/fVjrJsgA1CFg8CGIvEYvx AYO5monP/di7bk+oOE1MOzQLdWdzfFhbpeqNkU6qu+Npv7+zp1DCvHfcpEJ+UAZPM9 7JumHN3gpyYIm23Wb275g449wOeXCfBt0gu+3SePp8vEgVs3tRCgNKSrh6lV8Auzw5 o/ZhFBgy08ZbCs6YMBQMVwoRJoI7T4a25rMGaIbzwvJaGrxVemwIJfzk3NYqXAM4a/ MV4S6GwCRhLKg== Date: Sat, 27 Dec 2025 13:34:30 +0100 From: Krzysztof Kozlowski To: Jianhua Lin Cc: mchehab@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Project_Global_Chrome_Upstream_Group@mediatek.com, sirius.wang@mediatek.com, vince-wl.liu@mediatek.com, jh.hsu@mediatek.com Subject: Re: [PATCH v2 1/4] arm64: dts: mt8188: update JPEG encoder/decoder compatible Message-ID: <20251227-overjoyed-illustrious-snail-9323e9@quoll> References: <20251224031721.9942-1-jianhua.lin@mediatek.com> <20251224031721.9942-2-jianhua.lin@mediatek.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20251224031721.9942-2-jianhua.lin@mediatek.com> On Wed, Dec 24, 2025 at 11:17:18AM +0800, Jianhua Lin wrote: > The JPEG encoder and decoder of MT8188 share the same architecture > and features as those of MT8189, both use a 34-bit iova > address-space (16GB) and a single clock configuration. > > Previously, MT8188 was incorrectly defined alongside SoCs with 32-bit > iova address-space (4GB), such as "mediatek,mt2701-jpgdec" and > "mediatek,mtk-jpgenc". This mismatch results in an ABI break, How this mismatch can result in ABI break? > as MT8188 cannot function correctly under the 32-bit iova > address-space (4GB) configuration. Do you understand what is an ABI break? This commit is the ABI break. Best regards, Krzysztof