remoteproc: stm32: Properly set co-processor state when attaching

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Introduce the required mechanic to set the state of the M4 in order
to properly deal with scenarios where the co-processor has been
started by another entity.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Acked-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20200714200445.1427257-7-mathieu.poirier@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

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Mathieu Poirier 2020-07-14 14:04:40 -06:00 • committed by Bjorn Andersson

parent 9276536f45

commit 376ffdc044

1 changed files with 31 additions and 0 deletions

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drivers/remoteproc/stm32_rproc.c

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