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@somainline.org>
Link: https://lore.kernel.org/r/20210114221059.483390-10-angelogioacchino.delregno@somainline.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/qcom/mmcc-msm8998.c b/drivers/clk/qcom/mmcc-msm8998.c
index 0f7c2a4..467dadc 100644 (file)
--- 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[] = {