This is a note to let you know that I've just added the patch titled
clk: qcom: mmcc-msm8998: Set bimc_smmu_gdsc always on
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
clk-qcom-mmcc-msm8998-set-bimc_smmu_gdsc-always-on.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 76be519bab5c6ca6a6ad9402401996fb6a0955b5
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx>
Date: Thu Jan 14 23:10:57 2021 +0100
clk: qcom: mmcc-msm8998: Set bimc_smmu_gdsc always on
[ Upstream commit 68e1d106eb4dceb61bc2818d829786b364fd502b ]
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@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210114221059.483390-10-angelogioacchino.delregno@xxxxxxxxxxxxxx
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx>
Stable-dep-of: 1fc62c834739 ("clk: qcom: mmcc-msm8998: Fix the SMMU GDSC")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/clk/qcom/mmcc-msm8998.c b/drivers/clk/qcom/mmcc-msm8998.c
index c0bdefcbb2946..8768cdcf0aa3c 100644
--- a/drivers/clk/qcom/mmcc-msm8998.c
+++ b/drivers/clk/qcom/mmcc-msm8998.c
@@ -2666,7 +2666,7 @@ 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[] = {
