To ensure consistent behavior, the watchdog timeout handling of the
multi-core SCP should reset the whole SCP sub-system when watchdog
timeout. Triggering the rproc recovery flow on all instances will
ensure proper recovery of the SCP sub-system.
Signed-off-by: Tinghan Shen <tinghan.shen@xxxxxxxxxxxx>
---
drivers/remoteproc/mtk_scp.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 28ad5ceff3b5..bf935bb0f529 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -68,8 +68,14 @@ EXPORT_SYMBOL_GPL(scp_put);
static void scp_wdt_handler(struct mtk_scp *scp, u32 scp_to_host)
{
+ struct mtk_scp_of_cluster *scp_cluster = scp->cluster;
+ struct mtk_scp *scp_node;
+
dev_err(scp->dev, "SCP watchdog timeout! 0x%x", scp_to_host);
- rproc_report_crash(scp->rproc, RPROC_WATCHDOG);
+
+ /* report watchdog timeout to all cores */
+ list_for_each_entry(scp_node, &scp_cluster->mtk_scp_list, elem)
+ rproc_report_crash(scp_node->rproc, RPROC_WATCHDOG);
}
static void scp_init_ipi_handler(void *data, unsigned int len, void *priv)
--
2.18.0
