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| author | Stephan Gerhold <stephan.gerhold@linaro.org> | 2025-08-21 10:15:09 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-19 16:33:44 +0200 |
| commit | 28901349a6abfe38d788c3d8b120f3a4499b3955 (patch) | |
| tree | b345410d6e62ffe9fa98876ab0a85634e4669fba /arch | |
| parent | 1e137c4b12b753fffe4b147c3773d8b9f58c1c89 (diff) | |
| download | linux-28901349a6abfe38d788c3d8b120f3a4499b3955.tar.gz linux-28901349a6abfe38d788c3d8b120f3a4499b3955.tar.bz2 linux-28901349a6abfe38d788c3d8b120f3a4499b3955.zip | |
arm64: dts: qcom: sdm845: Fix slimbam num-channels/ees
commit 316294bb6695a43a9181973ecd4e6fb3e576a9f7 upstream.
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 <stephan.gerhold@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250821-sdm845-slimbam-channels-v1-1-498f7d46b9ee@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/qcom/sdm845.dtsi | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index 9bf7a405a964..54956ae1f674 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -5365,11 +5365,11 @@ compatible = "qcom,bam-v1.7.4", "qcom,bam-v1.7.0"; qcom,controlled-remotely; reg = <0 0x17184000 0 0x2a000>; - num-channels = <31>; + num-channels = <23>; interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>; #dma-cells = <1>; qcom,ee = <1>; - qcom,num-ees = <2>; + qcom,num-ees = <4>; iommus = <&apps_smmu 0x1806 0x0>; }; |