From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Alex Elder <elder@linaro.org>
Cc: agross@kernel.org, robh+dt@kernel.org,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] arm64: dts: qcom: sc7180: limit IPA iommu streams
Date: Thu, 26 Nov 2020 11:47:12 -0600 [thread overview]
Message-ID: <X7/qIMCOewRMG7Hy@builder.lan> (raw)
In-Reply-To: <20201126015457.6557-2-elder@linaro.org>
On Wed 25 Nov 19:54 CST 2020, Alex Elder wrote:
> Recently we learned that Android and Windows firmware don't seem to
> like using 3 as an iommu mask value for IPA. A simple fix was to
> specify exactly the streams needed explicitly, rather than implying
> a range with the mask. Make the same change for the SC7180 platform.
>
> See also:
> https://lore.kernel.org/linux-arm-msm/20201123052305.157686-1-bjorn.andersson@linaro.org/
>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Fixes: d82fade846aa8 ("arm64: dts: qcom: sc7180: add IPA information")
> Signed-off-by: Alex Elder <elder@linaro.org>
> ---
> arch/arm64/boot/dts/qcom/sc7180.dtsi | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index c0efb101b0d61..eb66aadf360d7 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -1396,7 +1396,8 @@
> ipa: ipa@1e40000 {
> compatible = "qcom,sc7180-ipa";
>
> - iommus = <&apps_smmu 0x440 0x3>;
> + iommus = <&apps_smmu 0x440 0x0>,
> + <&apps_smmu 0x442 0x0>;
> reg = <0 0x1e40000 0 0x7000>,
> <0 0x1e47000 0 0x2000>,
> <0 0x1e04000 0 0x2c000>;
> --
> 2.20.1
>
next prev parent reply other threads:[~2020-11-26 17:47 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 1:54 [PATCH 0/3] arm64: dts: fixes Alex Elder
2020-11-26 1:54 ` [PATCH 1/3] arm64: dts: qcom: sc7180: limit IPA iommu streams Alex Elder
2020-11-26 17:47 ` Bjorn Andersson [this message]
2020-11-26 1:54 ` [PATCH 2/3] arm64: dts: qcom: sc7180: use GIC_SPI for IPA interrupts Alex Elder
2020-11-26 1:54 ` [PATCH 3/3] arm64: dts: qcom: sdm845: " Alex Elder
2020-11-26 19:50 ` [PATCH 0/3] arm64: dts: fixes patchwork-bot+linux-arm-msm
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