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From: Sibi Sankar <sibis@codeaurora.org>
To: will@kernel.org, robin.murphy@arm.com, joro@8bytes.org
Cc: bjorn.andersson@linaro.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, iommu@lists.linux-foundation.org,
	linux-arm-kernel@lists.infradead.org, dianders@chromium.org,
	evgreen@chromium.org, mka@chromium.org, swboyd@chromium.org,
	Sibi Sankar <sibis@codeaurora.org>,
	Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Subject: [PATCH v5] iommu/arm-smmu-qcom: Request direct mapping for modem device
Date: Fri,  8 May 2020 00:51:57 +0530	[thread overview]
Message-ID: <20200507192157.6831-1-sibis@codeaurora.org> (raw)

The modem remote processor has two modes of access to the DDR, a direct
mode and through a SMMU which requires direct mapping. The configuration
of the modem SIDs is handled in TrustZone. On platforms where TrustZone
is absent this needs to be explicitly done from kernel. Add compatibles
for modem to opt in for direct mapping on such platforms.

Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---

V5
 * Reword commit message and drop unnecessary details

 drivers/iommu/arm-smmu-qcom.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers/iommu/arm-smmu-qcom.c
index 5bedf21587a56..cf01d0215a397 100644
--- a/drivers/iommu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm-smmu-qcom.c
@@ -17,7 +17,9 @@ static const struct of_device_id qcom_smmu_client_of_match[] = {
 	{ .compatible = "qcom,mdp4" },
 	{ .compatible = "qcom,mdss" },
 	{ .compatible = "qcom,sc7180-mdss" },
+	{ .compatible = "qcom,sc7180-mss-pil" },
 	{ .compatible = "qcom,sdm845-mdss" },
+	{ .compatible = "qcom,sdm845-mss-pil" },
 	{ }
 };
 
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

             reply	other threads:[~2020-05-07 19:22 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 19:21 Sibi Sankar [this message]
2020-05-07 21:14 ` [PATCH v5] iommu/arm-smmu-qcom: Request direct mapping for modem device Stephen Boyd
2020-05-08 17:23   ` Sibi Sankar

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