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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PYyZ4rjo; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ECA08606A31C; Mon, 9 Nov 2026 07:29:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=PYyZ4rjo Received: by smtp.kernel.org (Postfix) with ESMTPSA id 18D061F0089F; Mon, 9 Nov 2026 07:29:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794209374; bh=lPe+9nTj86U4VmyBT29yr8pYap7kZ2kWsN2cIll7KGM=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=PYyZ4rjo75FHIVLNEw31B2S9SrJ/I1fC0KvCx+ZKI09m3u0kdl16cT2NqjaBzdGd6 PI52Xa0vb4XoxojyxRnRVmPuLXg+/LsBrpRBLpL59IbGFUKDrkDNoQIYFeOC096KHW dvKDNIgek8PG5QddQcihl1g3EOjqfFPkZ7mSZLpQWWSoNuDP2yT2sjDIqDSduk3Zai PwPTK8+yQfXNpVusJmb5foQt6iZWbfcHc+LuZK6XkJMy+qyNXi762Q70h0kFvhF3qk 6nJ3YsufEZ8Z9yGGMuWuOocJa1/7/keeoBnv1byYm71zoL/yyGvBcUe7v0aR5TYhhZ Tm904DuJI2kEg== Message-ID: <80990ab6-5072-43a2-b829-177c956080c6@kernel.org> Date: Mon, 9 Nov 2026 08:29:26 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/4] dt-bindings: dsp: fsl,dsp: document debug reset control To: Shengjiu Wang Cc: shengjiu.wang@oss.nxp.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shengjiu.wang@nxp.com, daniel.baluta@nxp.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, andersson@kernel.org, mathieu.poirier@linaro.org, Frank.Li@nxp.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, p.zabel@pengutronix.de, linux-remoteproc@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org References: <20261105024106.338791-1-shengjiu.wang@oss.nxp.com> <20261105024106.338791-2-shengjiu.wang@oss.nxp.com> <20261106-savvy-invaluable-gaur-7af1b6@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 09/11/2026 03:22, Shengjiu Wang wrote: > On Fri, Nov 6, 2026 at 8:57 PM Krzysztof Kozlowski wrote: >> >> On Thu, Nov 05, 2026 at 10:41:03AM +0800, shengjiu.wang@oss.nxp.com wrote: >>> From: Shengjiu Wang >>> >>> The HiFi4 DSP provides a separate reset control for its debug logic. >>> Keep this reset deasserted so that an external debug agent can access >>> the DSP and perform debug operations. >>> >>> Also require the reset properties for the i.MX8ULP HiFi4 DSP. >> >> That's ABI break without explanation. >> > > The i.MX8ULP HiFi4 DSP has not been enabled upstream before. This series > adds the DSP node for the first time, so there should be no existing upstream > DT relying on this compatible without the reset properties. That does not change the fact that you break ABI, does it? Best regards, Krzysztof