| Message ID | 20210114221059.483390-10-angelogioacchino.delregno@somainline.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
| Series | Clock fixes for MSM8998 GCC, MMCC, GPUCC | expand |
Quoting AngeloGioacchino Del Regno (2021-01-14 14:10:57) > 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> > --- Applied to clk-next
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[] = {
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> --- drivers/clk/qcom/mmcc-msm8998.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)