From: Ruiqiang Hao <ruiqiang....@windriver.com>
Marvell-cn106xx has 24 cpu cores, each of which uses a separate policy,
so we need 24 message slot at least to ensure the normal data flow for
cpu_freq. Increase MBOX_TX_QUEUE_LEN and the max_msg of scmi_xfer to avoid
the following errors:
arm-scmi firmware:scmi: failed to get free message slot(-12)
Signed-off-by: Ruiqiang Hao <ruiqiang....@windriver.com>
---
drivers/firmware/arm_scmi/mailbox.c | 2 +-
include/linux/mailbox_controller.h | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/arm_scmi/mailbox.c
b/drivers/firmware/arm_scmi/mailbox.c
index bb15def8901f..22f1ad268a91 100644
--- a/drivers/firmware/arm_scmi/mailbox.c
+++ b/drivers/firmware/arm_scmi/mailbox.c
@@ -199,6 +199,6 @@ static const struct scmi_transport_ops scmi_mailbox_ops = {
const struct scmi_desc scmi_mailbox_desc = {
.ops = &scmi_mailbox_ops,
.max_rx_timeout_ms = 500, /* We may increase this if required */
- .max_msg = 20, /* Limited by MBOX_TX_QUEUE_LEN */
+ .max_msg = 40, /* Limited by MBOX_TX_QUEUE_LEN */
.max_msg_size = 256,
};
diff --git a/include/linux/mailbox_controller.h
b/include/linux/mailbox_controller.h
index 6fee33cb52f5..45539dd612ce 100644
--- a/include/linux/mailbox_controller.h
+++ b/include/linux/mailbox_controller.h
@@ -100,7 +100,7 @@ struct mbox_controller {
* REVISIT: If too many platforms see the "Try increasing MBOX_TX_QUEUE_LEN"
* print, it needs to be taken from config option or somesuch.
*/
-#define MBOX_TX_QUEUE_LEN 20
+#define MBOX_TX_QUEUE_LEN 40
/**
* struct mbox_chan - s/w representation of a communication chan
--
2.32.0
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