[v3] firmware: arm_scmi: imx: Dump syslog and system_info

[PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Peng Fan 5 months, 2 weeks ago

MISC protocol supports discovering the System Manager(SM) build
information including build commit, build time and etc. Retrieve the
information from SM.

Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
 .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
--- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
+++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
@@ -25,6 +25,7 @@
 enum scmi_imx_misc_protocol_cmd {
 	SCMI_IMX_MISC_CTRL_SET	= 0x3,
 	SCMI_IMX_MISC_CTRL_GET	= 0x4,
+	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
 	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
 };
 
@@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
 	__le32 val[];
 };
 
+struct scmi_imx_misc_buildinfo_out {
+	__le32 buildnum;
+	__le32 buildcommit;
+#define MISC_MAX_BUILDDATE	16
+	u8 builddate[MISC_MAX_BUILDDATE];
+#define MISC_MAX_BUILDTIME	16
+	u8 buildtime[MISC_MAX_BUILDTIME];
+};
+
 static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
 					struct scmi_imx_misc_info *mi)
 {
@@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
 	return ret;
 }
 
+static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
+{
+	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
+	struct scmi_imx_misc_buildinfo_out *out;
+	struct scmi_xfer *t;
+	int ret;
+
+	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
+				      sizeof(*out), &t);
+	if (ret)
+		return ret;
+
+	ret = ph->xops->do_xfer(ph, t);
+	if (!ret) {
+		out = t->rx.buf;
+		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
+		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
+		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
+			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
+			date, time);
+	}
+
+	ph->xops->xfer_put(ph, t);
+
+	return ret;
+}
+
 static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
 	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
 	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
@@ -299,6 +336,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
 	if (ret)
 		return ret;
 
+	ret = scmi_imx_misc_discover_build_info(ph);
+	if (ret)
+		return ret;
+
 	return ph->set_priv(ph, minfo, version);
 }
 

-- 
2.37.1

Re: [PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Sudeep Holla 5 months, 1 week ago

On Wed, Aug 27, 2025 at 12:59:14PM +0800, Peng Fan wrote:
> MISC protocol supports discovering the System Manager(SM) build
> information including build commit, build time and etc. Retrieve the
> information from SM.
> 
> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> @@ -25,6 +25,7 @@
>  enum scmi_imx_misc_protocol_cmd {
>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
> +	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>  };
>  
> @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
>  	__le32 val[];
>  };
>  
> +struct scmi_imx_misc_buildinfo_out {
> +	__le32 buildnum;
> +	__le32 buildcommit;
> +#define MISC_MAX_BUILDDATE	16
> +	u8 builddate[MISC_MAX_BUILDDATE];
> +#define MISC_MAX_BUILDTIME	16
> +	u8 buildtime[MISC_MAX_BUILDTIME];
> +};
> +
>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>  					struct scmi_imx_misc_info *mi)
>  {
> @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
>  	return ret;
>  }
>  
> +static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
> +{
> +	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
> +	struct scmi_imx_misc_buildinfo_out *out;
> +	struct scmi_xfer *t;
> +	int ret;
> +
> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
> +				      sizeof(*out), &t);
> +	if (ret)
> +		return ret;
> +
> +	ret = ph->xops->do_xfer(ph, t);
> +	if (!ret) {
> +		out = t->rx.buf;
> +		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
> +		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
> +		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
> +			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
> +			date, time);

And fix the alignment above, just noticed after hitting enter.

-- 
Regards,
Sudeep

Re: [PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Peng Fan 5 months, 1 week ago

On Fri, Aug 29, 2025 at 11:50:20AM +0100, Sudeep Holla wrote:
>On Wed, Aug 27, 2025 at 12:59:14PM +0800, Peng Fan wrote:
>> MISC protocol supports discovering the System Manager(SM) build
>> information including build commit, build time and etc. Retrieve the
>> information from SM.
>> 
>> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
>> Signed-off-by: Peng Fan <peng.fan@nxp.com>
>> ---
>>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
>>  1 file changed, 41 insertions(+)
>> 
>> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
>> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> @@ -25,6 +25,7 @@
>>  enum scmi_imx_misc_protocol_cmd {
>>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
>> +	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>>  };
>>  
>> @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
>>  	__le32 val[];
>>  };
>>  
>> +struct scmi_imx_misc_buildinfo_out {
>> +	__le32 buildnum;
>> +	__le32 buildcommit;
>> +#define MISC_MAX_BUILDDATE	16
>> +	u8 builddate[MISC_MAX_BUILDDATE];
>> +#define MISC_MAX_BUILDTIME	16
>> +	u8 buildtime[MISC_MAX_BUILDTIME];
>> +};
>> +
>>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>>  					struct scmi_imx_misc_info *mi)
>>  {
>> @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
>>  	return ret;
>>  }
>>  
>> +static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
>> +{
>> +	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
>> +	struct scmi_imx_misc_buildinfo_out *out;
>> +	struct scmi_xfer *t;
>> +	int ret;
>> +
>> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
>> +				      sizeof(*out), &t);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ph->xops->do_xfer(ph, t);
>> +	if (!ret) {
>> +		out = t->rx.buf;
>> +		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
>> +		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
>> +		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
>> +			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
>> +			date, time);
>
>And fix the alignment above, just noticed after hitting enter.

My bad, just not sure why "b4 prep --check" not report warning for this.

Thanks,
Peng

>
>-- 
>Regards,
>Sudeep

Re: [PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Sudeep Holla 5 months, 1 week ago

On Wed, Aug 27, 2025 at 12:59:14PM +0800, Peng Fan wrote:
> MISC protocol supports discovering the System Manager(SM) build
> information including build commit, build time and etc. Retrieve the
> information from SM.
> 
> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
> ---
>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
> @@ -25,6 +25,7 @@
>  enum scmi_imx_misc_protocol_cmd {
>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
> +	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>  };
>  
> @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
>  	__le32 val[];
>  };
>  
> +struct scmi_imx_misc_buildinfo_out {
> +	__le32 buildnum;
> +	__le32 buildcommit;
> +#define MISC_MAX_BUILDDATE	16
> +	u8 builddate[MISC_MAX_BUILDDATE];
> +#define MISC_MAX_BUILDTIME	16
> +	u8 buildtime[MISC_MAX_BUILDTIME];
> +};
> +
>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>  					struct scmi_imx_misc_info *mi)
>  {
> @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
>  	return ret;
>  }
>  
> +static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
> +{
> +	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
> +	struct scmi_imx_misc_buildinfo_out *out;
> +	struct scmi_xfer *t;
> +	int ret;
> +
> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
> +				      sizeof(*out), &t);
> +	if (ret)
> +		return ret;
> +
> +	ret = ph->xops->do_xfer(ph, t);
> +	if (!ret) {
> +		out = t->rx.buf;
> +		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
> +		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
> +		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
> +			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
> +			date, time);
> +	}
> +
> +	ph->xops->xfer_put(ph, t);
> +
> +	return ret;
> +}
> +
>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
> @@ -299,6 +336,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
>  	if (ret)
>  		return ret;
>  
> +	ret = scmi_imx_misc_discover_build_info(ph);

To align with other naming,

s/scmi_imx_misc_discover_build_info/scmi_imx_misc_build_info_discover/

> +		return ret;

The document in 1/6 didn't state this as mandatory. IMO, it is not
fair to return error if the return is NOT_SUPPORTED.

-- 
Regards,
Sudeep

Re: [PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Peng Fan 5 months, 1 week ago

On Fri, Aug 29, 2025 at 11:48:56AM +0100, Sudeep Holla wrote:
>On Wed, Aug 27, 2025 at 12:59:14PM +0800, Peng Fan wrote:
>> MISC protocol supports discovering the System Manager(SM) build
>> information including build commit, build time and etc. Retrieve the
>> information from SM.
>> 
>> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
>> Signed-off-by: Peng Fan <peng.fan@nxp.com>
>> ---
>>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
>>  1 file changed, 41 insertions(+)
>> 
>> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
>> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> @@ -25,6 +25,7 @@
>>  enum scmi_imx_misc_protocol_cmd {
>>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
>> +	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>>  };
>>  
>> @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
>>  	__le32 val[];
>>  };
>>  
>> +struct scmi_imx_misc_buildinfo_out {
>> +	__le32 buildnum;
>> +	__le32 buildcommit;
>> +#define MISC_MAX_BUILDDATE	16
>> +	u8 builddate[MISC_MAX_BUILDDATE];
>> +#define MISC_MAX_BUILDTIME	16
>> +	u8 buildtime[MISC_MAX_BUILDTIME];
>> +};
>> +
>>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>>  					struct scmi_imx_misc_info *mi)
>>  {
>> @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
>>  	return ret;
>>  }
>>  
>> +static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
>> +{
>> +	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
>> +	struct scmi_imx_misc_buildinfo_out *out;
>> +	struct scmi_xfer *t;
>> +	int ret;
>> +
>> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
>> +				      sizeof(*out), &t);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ph->xops->do_xfer(ph, t);
>> +	if (!ret) {
>> +		out = t->rx.buf;
>> +		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
>> +		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
>> +		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
>> +			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
>> +			date, time);
>> +	}
>> +
>> +	ph->xops->xfer_put(ph, t);
>> +
>> +	return ret;
>> +}
>> +
>>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
>> @@ -299,6 +336,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
>>  	if (ret)
>>  		return ret;
>>  
>> +	ret = scmi_imx_misc_discover_build_info(ph);
>
>To align with other naming,
>
>s/scmi_imx_misc_discover_build_info/scmi_imx_misc_build_info_discover/
>
>> +		return ret;
>
>The document in 1/6 didn't state this as mandatory. IMO, it is not
>fair to return error if the return is NOT_SUPPORTED.

I should use:
if (ret && ret != -EOPNOTSUPP) 
	return ret;

Thanks,
Peng
>
>-- 
>Regards,
>Sudeep

Re: [PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol

Posted by Peng Fan 5 months, 1 week ago

On Fri, Aug 29, 2025 at 11:48:56AM +0100, Sudeep Holla wrote:
>On Wed, Aug 27, 2025 at 12:59:14PM +0800, Peng Fan wrote:
>> MISC protocol supports discovering the System Manager(SM) build
>> information including build commit, build time and etc. Retrieve the
>> information from SM.
>> 
>> Reviewed-by: Cristian Marussi <cristian.marussi@arm.com>
>> Signed-off-by: Peng Fan <peng.fan@nxp.com>
>> ---
>>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 41 ++++++++++++++++++++++
>>  1 file changed, 41 insertions(+)
>> 
>> diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> index a8915d3b4df518719d56bfff38922625ad9b70f6..464afeae8267d8c1eca4c4d5e008eca6d741c6ff 100644
>> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> @@ -25,6 +25,7 @@
>>  enum scmi_imx_misc_protocol_cmd {
>>  	SCMI_IMX_MISC_CTRL_SET	= 0x3,
>>  	SCMI_IMX_MISC_CTRL_GET	= 0x4,
>> +	SCMI_IMX_MISC_DISCOVER_BUILDINFO = 0x6,
>>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>>  };
>>  
>> @@ -65,6 +66,15 @@ struct scmi_imx_misc_ctrl_get_out {
>>  	__le32 val[];
>>  };
>>  
>> +struct scmi_imx_misc_buildinfo_out {
>> +	__le32 buildnum;
>> +	__le32 buildcommit;
>> +#define MISC_MAX_BUILDDATE	16
>> +	u8 builddate[MISC_MAX_BUILDDATE];
>> +#define MISC_MAX_BUILDTIME	16
>> +	u8 buildtime[MISC_MAX_BUILDTIME];
>> +};
>> +
>>  static int scmi_imx_misc_attributes_get(const struct scmi_protocol_handle *ph,
>>  					struct scmi_imx_misc_info *mi)
>>  {
>> @@ -272,6 +282,33 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
>>  	return ret;
>>  }
>>  
>> +static int scmi_imx_misc_discover_build_info(const struct scmi_protocol_handle *ph)
>> +{
>> +	char date[MISC_MAX_BUILDDATE], time[MISC_MAX_BUILDTIME];
>> +	struct scmi_imx_misc_buildinfo_out *out;
>> +	struct scmi_xfer *t;
>> +	int ret;
>> +
>> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_DISCOVER_BUILDINFO, 0,
>> +				      sizeof(*out), &t);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ph->xops->do_xfer(ph, t);
>> +	if (!ret) {
>> +		out = t->rx.buf;
>> +		strscpy(date, out->builddate, MISC_MAX_BUILDDATE);
>> +		strscpy(time, out->buildtime, MISC_MAX_BUILDTIME);
>> +		dev_info(ph->dev, "SM Version\t= Build %u, Commit %08x %s %s\n",
>> +			le32_to_cpu(out->buildnum), le32_to_cpu(out->buildcommit),
>> +			date, time);
>> +	}
>> +
>> +	ph->xops->xfer_put(ph, t);
>> +
>> +	return ret;
>> +}
>> +
>>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
>> @@ -299,6 +336,10 @@ static int scmi_imx_misc_protocol_init(const struct scmi_protocol_handle *ph)
>>  	if (ret)
>>  		return ret;
>>  
>> +	ret = scmi_imx_misc_discover_build_info(ph);
>
>To align with other naming,
>
>s/scmi_imx_misc_discover_build_info/scmi_imx_misc_build_info_discover/

Fix in V4.

>
>> +		return ret;
>
>The document in 1/6 didn't state this as mandatory. IMO, it is not
>fair to return error if the return is NOT_SUPPORTED.

Indeed. I will use below:
        ret = scmi_imx_misc_build_info_discover(ph);
        if (ret)
                dev_err("Failed to get build info: %d\n", ret);

Thanks,
Peng

>
>-- 
>Regards,
>Sudeep

[PATCH v3 1/6] firmware: arm_scmi: imx: Add documentation for MISC_BOARD_INFO
[PATCH v3 2/6] firmware: arm_scmi: imx: Support discovering buildinfo of MISC protocol
[PATCH v3 3/6] firmware: arm_scmi: imx: Support getting cfg info of MISC protocol
[PATCH v3 4/6] firmware: arm_scmi: imx: Support getting board info of MISC protocol
[PATCH v3 5/6] firmware: arm_scmi: imx: Support getting syslog of MISC protocol
[PATCH v3 6/6] firmware: imx: sm-misc: Dump syslog info