[PATCH 07/10] firmware: scmi: mailbox: Support arm,max_rx_timeout_ms

[Peng Fan (OSS)]

From: Peng Fan <peng.fan at nxp.com>

Per devicetree bindings:
arm,max-rx-timeout-ms indicates an optional time value, expressed in
milliseconds, representing the transport maximum timeout value for the
receive channel. The value should be a non-zero value if set.

Support this property if platform set it to a non-default value. This
property is a per SCMI property, so all channels share same value.

Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 drivers/firmware/scmi/mailbox_agent.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/scmi/mailbox_agent.c b/drivers/firmware/scmi/mailbox_agent.c
index 32b0fd9f589a30c2bb8bdbe8d655c3d47d0abd5a..16a82f55ab7f7550e7744066cd640b0c439f75eb 100644
--- a/drivers/firmware/scmi/mailbox_agent.c
+++ b/drivers/firmware/scmi/mailbox_agent.c
@@ -16,7 +16,7 @@
 
 #include "smt.h"
 
-#define TIMEOUT_US_30MS			30000
+#define TIMEOUT_30MS			30
 
 /**
  * struct scmi_mbox_channel - Description of an SCMI mailbox transport
@@ -73,6 +73,7 @@ out:
 
 static int setup_channel(struct udevice *dev, struct scmi_mbox_channel *chan)
 {
+	struct scmi_mbox_channel *base_chan = dev_get_plat(dev);
 	int ret;
 
 	ret = mbox_get_by_index(dev, 0, &chan->mbox);
@@ -87,7 +88,7 @@ static int setup_channel(struct udevice *dev, struct scmi_mbox_channel *chan)
 		return ret;
 	}
 
-	chan->timeout_us = TIMEOUT_US_30MS;
+	chan->timeout_us = base_chan->timeout_us;
 
 	return 0;
 }
@@ -127,6 +128,9 @@ int scmi_mbox_of_to_plat(struct udevice *dev)
 {
 	struct scmi_mbox_channel *chan = dev_get_plat(dev);
 
+	chan->timeout_us = dev_read_u32_default(dev, "arm,max-rx-timeout-ms",
+						TIMEOUT_30MS) * 1000;
+
 	return setup_channel(dev, chan);
 }
 

-- 
2.35.3