5.10-stable review patch. If anyone has any objections, please let me know.
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From: AngeloGioacchino Del Regno angelogioacchino.delregno@somainline.org
[ 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@somainline.org Link: https://lore.kernel.org/r/20210114221059.483390-10-angelogioacchino.delregno... Signed-off-by: Stephen Boyd sboyd@kernel.org Stable-dep-of: 1fc62c834739 ("clk: qcom: mmcc-msm8998: Fix the SMMU GDSC") Signed-off-by: Sasha Levin sashal@kernel.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 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[] = {