clk: qcom: gcc-msm8998: Add Q6 BIMC and LPASS core, ADSP SMMU clocks
Add the Q6 BIMC, LPASS core/adsp SMMU clocks to support audio related functionality on MSM8998 and APQ variants. As a final step to entirely enable the required clock tree for the lpass iommu and audio dsp, add the lpass core/adsp GDSCs. As a side note, it was found out that disabling the lpass core GDSC at any time would cause a system lockup (and reboot): disabling this GDSC will leave the lpass iommu completely unclocked, losing its state entirely - including the secure contexts that have been previously set-up from the bootloader/TrustZone. Losing this IOMMU configuration will trigger a hypervisor fault, which will reboot the system; the only workaround for this issue is to declare the lpass core gdsc as always-on. It should also not be forgotten that this is all about firmware and there may be a version of it that doesn't enable this GDSC at all before booting Linux, which is the reason why this specific declaration wasn't simply omitted. Signed-off-by:AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> Signed-off-by:
Marc Gonzalez <mgonzalez@freebox.fr> Link: https://lore.kernel.org/r/20240814-lpass-v1-2-a5bb8f9dfa8b@freebox.fr Signed-off-by:
Bjorn Andersson <andersson@kernel.org>
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