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| author | Tinghan Shen <tinghan.shen@mediatek.com> | 2023-09-01 11:09:30 +0300 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2023-09-13 20:45:59 +0300 |
| commit | c6eda63f33cbd6cff7c302869bd9a135b4a8a813 (patch) | |
| tree | 284a4df3438d6d1395c2ea9263b084170e83a458 /drivers/remoteproc/mtk_common.h | |
| parent | 1fdbf0cdde98c113b17f8cd089a892c5f0437d3e (diff) | |
| download | linux-c6eda63f33cbd6cff7c302869bd9a135b4a8a813.tar.xz | |
remoteproc: mediatek: Remove dependency of MT8195 SCP L2TCM power control on dual-core SCP
Previously, SCP core 0 controlled the power of L2TCM and dictated that
SCP core 1 could only boot after SCP core 0. To address this constraint,
extracted the power control flow of L2TCM and made it shared
between both cores, enabling support for arbitrary boot order.
The flow for controlling L2TCM power has been incorporated into the
mt8195_scp_before_load() and mt8195_scp_stop() APIs, which are
respectively invoked during the rproc->ops->start() and
rproc->ops->stop() operations. These APIs effectively serve the same
purpose as the rproc prepare()/unprepare() APIs."
Signed-off-by: Tinghan Shen <tinghan.shen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230901080935.14571-10-tinghan.shen@mediatek.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers/remoteproc/mtk_common.h')
| -rw-r--r-- | drivers/remoteproc/mtk_common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h index 1438159ae736..fea05bbba9aa 100644 --- a/drivers/remoteproc/mtk_common.h +++ b/drivers/remoteproc/mtk_common.h @@ -106,6 +106,9 @@ struct mtk_scp_of_cluster { size_t l1tcm_size; phys_addr_t l1tcm_phys; struct list_head mtk_scp_list; + /* Prevent concurrent operations of this structure and L2TCM power control. */ + struct mutex cluster_lock; + u32 l2tcm_refcnt; }; struct mtk_scp { |