linux-kernel - [PATCH v1 3/6] firmware: arm_scmi: Use max-rx-timeout-ms from devicetree

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Message-ID: <20240730144707.1647025-4-cristian.marussi@arm.com>
Date: Tue, 30 Jul 2024 15:47:04 +0100
From: Cristian Marussi <cristian.marussi@....com>
To: linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	arm-scmi@...r.kernel.org,
	devicetree@...r.kernel.org
Cc: sudeep.holla@....com,
	james.quinlan@...adcom.com,
	f.fainelli@...il.com,
	vincent.guittot@...aro.org,
	etienne.carriere@...com,
	peng.fan@....nxp.com,
	michal.simek@....com,
	quic_sibis@...cinc.com,
	quic_nkela@...cinc.com,
	dan.carpenter@...aro.org,
	souvik.chakravarty@....com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	Cristian Marussi <cristian.marussi@....com>,
	Peng Fan <peng.fan@....com>
Subject: [PATCH v1 3/6] 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@....com>
Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
 drivers/firmware/arm_scmi/driver.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 332cd5207bbc..e7dab0eea540 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2964,6 +2964,7 @@ 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)
@@ -2980,6 +2981,14 @@ 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;
 }
 
-- 
2.45.2