diff options
| author | Vivek Gautam <vivek.gautam@codeaurora.org> | 2019-09-20 13:34:28 +0530 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2019-11-04 17:48:37 +0000 |
| commit | 5eb0e0e4f90addc6b79ebf1cb4b06b56b09f09de (patch) | |
| tree | 6c66008c21ef8a2810e1a3d47cae12a4724ab244 /drivers/firmware/qcom_scm-32.c | |
| parent | 1a5ea3b7a6ac6c133660b9aeda95b2087c8eec47 (diff) | |
| download | linux-5eb0e0e4f90addc6b79ebf1cb4b06b56b09f09de.tar.bz2 | |
firmware/qcom_scm: Add scm call to handle smmu errata
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>
Diffstat (limited to 'drivers/firmware/qcom_scm-32.c')
| -rw-r--r-- | drivers/firmware/qcom_scm-32.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/firmware/qcom_scm-32.c b/drivers/firmware/qcom_scm-32.c index 215061c581e1..bee8729525ec 100644 --- a/drivers/firmware/qcom_scm-32.c +++ b/drivers/firmware/qcom_scm-32.c @@ -614,3 +614,8 @@ int __qcom_scm_io_writel(struct device *dev, phys_addr_t addr, unsigned int val) return qcom_scm_call_atomic2(QCOM_SCM_SVC_IO, QCOM_SCM_IO_WRITE, addr, val); } + +int __qcom_scm_qsmmu500_wait_safe_toggle(struct device *dev, bool enable) +{ + return -ENODEV; +} |