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 6A9FF49659 for ; Thu, 16 Oct 2025 23:01:09 +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=1760655669; cv=none; b=anS8MpH8Gb1Vvw9Lfga+jq9/wpe9IpTVgzycnDEvhDCk7xNarQvgYz4iJpHt+klUv4nf8sB9dn5l+ZKh1bi8ePj6qwHIJ8lYhbwIMvhJwrKxYU1nsWM/85inCrqF9edI4Ix+9QpEQGqT2HBfM8kJQbSPQ6fw1v32y23EtpMcB0E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760655669; c=relaxed/simple; bh=2a3OVGv5ZYPsdcyxmpgXLrP4P5nj5597wSX/wBW/ORI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=up32Ut2PDv2Z+VEpodVkMzeWUD1/J9J/saR0O40LiwotrzQqS0c06Z7sWm/GvhgiS9jd7StZ5ZCZl2SV9uSRb3KQUBfWgxE5vwCFEnXyqKp00CTn8Ml6TBmvMVhWQDTleEaABflbfoiFf1TnxjZW78lliF10V2dXS/qV2vbEXTk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rsrH5u3e; 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="rsrH5u3e" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A2235C4CEF1; Thu, 16 Oct 2025 23:01:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760655669; bh=2a3OVGv5ZYPsdcyxmpgXLrP4P5nj5597wSX/wBW/ORI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rsrH5u3e//Cf7Axtf4i9kLxRGio/OiRic+X3QW/5HfcStTNEHmDvdmBUiaaKI+6MH Dn30jtEx7KdtIeqdpWPEo+g+bzzbS3cWaocmlJUgG5nzYit2T37VlA35ZEJ49AH2Ea RNoQrZ+oHmdE14AToS63e32x3dHn/DRQZte4GiNYL04OawdeuCQczK+8KbI/sXWaUi pQwSX6bvC1XqM2ClD1R1Ts7NVFNQxHhjiZgMfgHIjgX2q8ETDsFsn0TAMBnk5w+aUU noTBLyQLzbpYbHz67XLb8EJdNyr76ghg1I/SC+qXWzHNJHbYbOUGNXx7Og2ioTyblx z2oNCiiSxddGg== From: Sasha Levin To: stable@vger.kernel.org Cc: Stephan Gerhold , Dmitry Baryshkov , Bjorn Andersson , Sasha Levin Subject: [PATCH 5.15.y] arm64: dts: qcom: sdm845: Fix slimbam num-channels/ees Date: Thu, 16 Oct 2025 19:01:06 -0400 Message-ID: <20251016230106.3454355-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <2025101653-gray-unbroken-db61@gregkh> References: <2025101653-gray-unbroken-db61@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 69212445d22c9..c00b5712959d3 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -4839,11 +4839,11 @@ slimbam: dma-controller@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