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 9FB603208 for ; Fri, 17 Oct 2025 00:11:05 +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=1760659867; cv=none; b=sL+tDBmuQF+KpD9t9mH6rbXBVIfA+dX1JqoVysAMysnqJBgdXzKQPRyiljdwwletHdlyzp4w1q+zZVgygz5MHhdstn/RasoNB2opeOh1JkU2rGr4Vw9LLZA424GfF4M4Zq0/DpD4kJcR4yPqO1ZP2d7Mc1lAbq9p8dmT4pbTJaQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760659867; c=relaxed/simple; bh=zUiMqPo81Qrg1s61sUYVHbTXfdbpWEJSeOnsH3GF/kk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=P5A7BdxfoOqjd3AngsYSDbkpQ2qeuqf40XgZxLTvc79LgnztI8vd/rMXa+h20Uvv7Fb9PAi6+OgFTiyoQrlA819vmjwW1IErZ8GmCJERy3kOReBkNN4qZRAVJj4euO9S/jqWqMqB/WPidmquOaLojxF7DXvgUNtBuA7rEex3zwQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=a5MQpUeg; 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="a5MQpUeg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B8A5C4CEF1; Fri, 17 Oct 2025 00:11:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760659865; bh=zUiMqPo81Qrg1s61sUYVHbTXfdbpWEJSeOnsH3GF/kk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a5MQpUeg5bhEF6Uy2RbJDqsDN2gHoH0jBgmssjy8ZEMeoXGAE3hVzMw9r6CGHFwW+ 9c3kjkm3t5oTGztXOWMJ4b1IJj73uP/SBEKgrO+31Cn+QGJ621cs+2qWe8rLgUelxZ WLky3RqMdxxMP0s8foLHjTRi4TQGeRp+VzCqQLxHD6mbOaFvf+oY/qCV58398+fVCw 97MOwSjzU+ZZxIibnaCSD6UHdvEBMDWfz5Dl2Kt2tP5R44Z+sYPwOVaeD2Lp7Ff0Y/ d95jc3Y55ICbJy6NtOBCe4g0OSFXuK8KsAN//h53k77xZna4gyW9rGwHK103OMiFQj Dbz20xF/0hxDw== From: Sasha Levin To: stable@vger.kernel.org Cc: Stephan Gerhold , Dmitry Baryshkov , Bjorn Andersson , Sasha Levin Subject: [PATCH 5.10.y] arm64: dts: qcom: sdm845: Fix slimbam num-channels/ees Date: Thu, 16 Oct 2025 20:11:02 -0400 Message-ID: <20251017001102.3477703-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2025101653-armory-oxygen-af78@gregkh> References: <2025101653-armory-oxygen-af78@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Stephan Gerhold [ Upstream commit 316294bb6695a43a9181973ecd4e6fb3e576a9f7 ] Reading the hardware registers of the &slimbam on RB3 reveals that the BAM supports only 23 pipes (channels) and supports 4 EEs instead of 2. This hasn't caused problems so far since nothing is using the extra channels, but attempting to use them would lead to crashes. The bam_dma driver might warn in the future if the num-channels in the DT are wrong, so correct the properties in the DT to avoid future regressions. Cc: stable@vger.kernel.org Fixes: 27ca1de07dc3 ("arm64: dts: qcom: sdm845: add slimbus nodes") Signed-off-by: Stephan Gerhold Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250821-sdm845-slimbam-channels-v1-1-498f7d46b9ee@linaro.org Signed-off-by: Bjorn Andersson [ Adjust context ] Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/qcom/sdm845.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index da48ae60155af..4422392fb60e0 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -4492,11 +4492,11 @@ slimbam: dma@17184000 { compatible = "qcom,bam-v1.7.0"; qcom,controlled-remotely; reg = <0 0x17184000 0 0x2a000>; - num-channels = <31>; + num-channels = <23>; interrupts = ; #dma-cells = <1>; qcom,ee = <1>; - qcom,num-ees = <2>; + qcom,num-ees = <4>; iommus = <&apps_smmu 0x1806 0x0>; }; -- 2.51.0