firmware: arm_scmi: Use max-rx-timeout-ms from devicetree

Override default maximum RX timeout with the value picked from the
devicetree, when provided.

Suggested-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Message-Id: <20240730144707.1647025-4-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 918d7287ecf43f0401cf20795106f6d83fc7d95a..66806578df5a568131aa2370726a71bdb67d8f55 100644 (file)
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -3029,6 +3029,7 @@ static int scmi_debugfs_raw_mode_setup(struct scmi_info *info)
 static const struct scmi_desc *scmi_transport_setup(struct device *dev)
 {
        struct scmi_transport *trans;
+       int ret;
 
        trans = dev_get_platdata(dev);
        if (!trans || !trans->desc || !trans->supplier || !trans->core_ops)
@@ -3045,6 +3046,14 @@ static const struct scmi_desc *scmi_transport_setup(struct device *dev)
 
        dev_info(dev, "Using %s\n", dev_driver_string(trans->supplier));
 
+       ret = of_property_read_u32(dev->of_node, "max-rx-timeout-ms",
+                                  &trans->desc->max_rx_timeout_ms);
+       if (ret && ret != -EINVAL)
+               dev_err(dev, "Malformed max-rx-timeout-ms DT property.\n");
+
+       dev_info(dev, "SCMI max-rx-timeout: %dms\n",
+                trans->desc->max_rx_timeout_ms);
+
        return trans->desc;
 }