From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net
Cc: evgreen@chromium.org.net, subashab@codeaurora.org,
cpratapa@codeaurora.org, bjorn.andersson@linaro.org,
agross@kernel.org, robh+dt@kernel.org,
linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: Re: [PATCH net-next 1/4] arm64: dts: sdm845: add IPA iommus property
Date: Fri, 1 May 2020 16:59:42 -0500 [thread overview]
Message-ID: <2648d6a5-9ef7-b60d-c9a2-d5e1c083bc0a@linaro.org> (raw)
In-Reply-To: <20200501214625.31539-2-elder@linaro.org>
On 5/1/20 4:46 PM, Alex Elder wrote:
> Add an "iommus" property to the IPA node in "sdm845.dtsi". It is
> required because there are two regions of memory the IPA accesses
> through an SMMU. The next few patches define and map those regions.
>
> Signed-off-by: Alex Elder <elder@linaro.org>
I'm very sorry, I grouped these incorrectly.
I intended for this one patch to go to Bjorn and Andy to be
taken in through the Qualcomm tree, *not* through the net-next
tree.
I also neglected to mention that this addition is related to
this other series, which has the modem define some IOMMU
streams for the modem to use (one of the definitions is
related to the modem's use of IPA):
https://lore.kernel.org/patchwork/cover/1227747/
Would you like me to post v2 of the series correcting this?
-Alex
> ---
> arch/arm64/boot/dts/qcom/sdm845.dtsi | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> index 8f926b5234d4..de6bb86c4968 100644
> --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> @@ -1761,6 +1761,8 @@
>
> ipa: ipa@1e40000 {
> compatible = "qcom,sdm845-ipa";
> +
> + iommus = <&apps_smmu 0x720 0x3>;
> reg = <0 0x1e40000 0 0x7000>,
> <0 0x1e47000 0 0x2000>,
> <0 0x1e04000 0 0x2c000>;
>
next prev parent reply other threads:[~2020-05-01 21:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-01 21:46 [PATCH net-next 0/4] net: ipa: I/O map SMEM and IMEM Alex Elder
2020-05-01 21:46 ` [PATCH net-next 1/4] arm64: dts: sdm845: add IPA iommus property Alex Elder
2020-05-01 21:59 ` Alex Elder [this message]
2020-05-01 21:46 ` [PATCH net-next 2/4] net: ipa: redefine struct ipa_mem_data Alex Elder
2020-05-01 21:46 ` [PATCH net-next 3/4] net: ipa: define IMEM memory region for IPA Alex Elder
2020-05-01 21:46 ` [PATCH net-next 4/4] net: ipa: define SMEM " Alex Elder
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