firmware/qcom_scm: Add scm call to handle smmu errata

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Qcom's smmu-500 needs to toggle wait-for-safe sequence to
handle TLB invalidation sync's.
Few firmwares allow doing that through SCM interface.
Add API to toggle wait for safe from firmware through a
SCM call.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Acked-by: Andy Gross <agross@kernel.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
Signed-off-by: Will Deacon <will@kernel.org>

...

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Vivek Gautam 2019-09-20 13:34:28 +05:30 • committed by Will Deacon

parent 1a5ea3b7a6

commit 5eb0e0e4f9

5 changed files with 31 additions and 0 deletions

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5

drivers/firmware/qcom_scm-32.c

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13

drivers/firmware/qcom_scm-64.c

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6

drivers/firmware/qcom_scm.c

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5

drivers/firmware/qcom_scm.h

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2

include/linux/qcom_scm.h

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