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Message-Id: <20210114221059.483390-10-angelogioacchino.delregno@somainline.org>
Date: Thu, 14 Jan 2021 23:10:57 +0100
From: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org>
To: linux-arm-msm@...r.kernel.org
Cc: konrad.dybcio@...ainline.org, marijn.suijten@...ainline.org,
martin.botka@...ainline.org, phone-devel@...r.kernel.org,
linux-kernel@...r.kernel.org, agross@...nel.org,
bjorn.andersson@...aro.org, mturquette@...libre.com,
sboyd@...nel.org, robh+dt@...nel.org, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...ainline.org>
Subject: [PATCH v2 09/11] clk: qcom: mmcc-msm8998: Set bimc_smmu_gdsc always on
This GDSC enables (or cuts!) power to the Multimedia Subsystem IOMMU
(mmss smmu), which has bootloader pre-set secure contexts.
In the event of a complete power loss, the secure contexts will be
reset and the hypervisor will crash the SoC.
To prevent this, and get a working multimedia subsystem, set this
GDSC as always on.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...ainline.org>
---
drivers/clk/qcom/mmcc-msm8998.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clk/qcom/mmcc-msm8998.c b/drivers/clk/qcom/mmcc-msm8998.c
index f9510a248a36..b49c4137b7d7 100644
--- a/drivers/clk/qcom/mmcc-msm8998.c
+++ b/drivers/clk/qcom/mmcc-msm8998.c
@@ -2663,7 +2663,7 @@ static struct gdsc bimc_smmu_gdsc = {
.name = "bimc_smmu",
},
.pwrsts = PWRSTS_OFF_ON,
- .flags = HW_CTRL,
+ .flags = HW_CTRL | ALWAYS_ON,
};
static struct clk_regmap *mmcc_msm8998_clocks[] = {
--
2.29.2
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