linux-kernel - Re: [PATCH 6/7] firmware: arm_scmi: imx: Support getting board info of MISC protocol

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Message-ID: <20250630025035.GC13878@nxa18884-linux>
Date: Mon, 30 Jun 2025 10:50:35 +0800
From: Peng Fan <peng.fan@....nxp.com>
To: Cristian Marussi <cristian.marussi@....com>
Cc: Peng Fan <peng.fan@....com>, Sudeep Holla <sudeep.holla@....com>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, arm-scmi@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] firmware: arm_scmi: imx: Support getting board info
 of MISC protocol

On Fri, Jun 27, 2025 at 02:45:47PM +0100, Cristian Marussi wrote:
>On Fri, Jun 27, 2025 at 02:03:49PM +0800, Peng Fan wrote:
>> MISC protocol supports getting board information. Add the API for user
>> to retrieve the information from SM
>> 
>> Signed-off-by: Peng Fan <peng.fan@....com>
>> ---
>>  .../firmware/arm_scmi/vendors/imx/imx-sm-misc.c    | 30 ++++++++++++++++++++++
>>  include/linux/scmi_imx_protocol.h                  |  5 ++++
>>  2 files changed, 35 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 1a6d75357b76ce6bb7d06461999b368c27f1fa43..35c63e7cb189475807ed1e6723dbcb61ab66800a 100644
>> --- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> +++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
>> @@ -29,6 +29,7 @@ enum scmi_imx_misc_protocol_cmd {
>>  	SCMI_IMX_MISC_SI_INFO = 0xB,
>>  	SCMI_IMX_MISC_CFG_INFO = 0xC,
>>  	SCMI_IMX_MISC_SYSLOG = 0xD,
>> +	SCMI_IMX_MISC_BOARD_INFO = 0xE,
>>  	SCMI_IMX_MISC_CTRL_NOTIFY = 0x8,
>>  };
>>  
>> @@ -76,6 +77,11 @@ struct scmi_imx_misc_buildinfo_out {
>>  	u8 buildtime[MISC_MAX_BUILDTIME];
>>  };
>>  
>> +struct scmi_imx_misc_board_info_out {
>> +	__le32 attributes;
>> +	u8 brdname[MISC_MAX_BRDNAME];
>> +};
>> +
>>  struct scmi_imx_misc_cfg_info_out {
>>  	__le32 msel;
>>  	u8 cfgname[MISC_MAX_CFGNAME];
>> @@ -334,6 +340,29 @@ static int scmi_imx_discover_build_info(const struct scmi_protocol_handle *ph,
>>  	return ret;
>>  }
>>  
>> +static int scmi_imx_misc_board_info(const struct scmi_protocol_handle *ph,
>> +				    struct scmi_imx_misc_system_info *info)
>> +{
>> +	struct scmi_imx_misc_board_info_out *out;
>> +	struct scmi_xfer *t;
>> +	int ret;
>> +
>> +	ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_BOARD_INFO, 0, sizeof(*out), &t);
>> +	if (ret)
>> +		return ret;
>> +
>> +	ret = ph->xops->do_xfer(ph, t);
>> +	if (!ret) {
>> +		out = t->rx.buf;
>> +		info->brd_attributes = le32_to_cpu(out->attributes);
>> +		strscpy(info->brdname, out->brdname, MISC_MAX_BRDNAME);
>> +	}
>> +
>> +	ph->xops->xfer_put(ph, t);
>> +
>> +	return ret;
>> +}
>> +
>>  static int scmi_imx_misc_cfg_info(const struct scmi_protocol_handle *ph,
>>  				  struct scmi_imx_misc_system_info *info)
>>  {
>> @@ -446,6 +475,7 @@ static int scmi_imx_misc_syslog(const struct scmi_protocol_handle *ph, u16 size,
>>  }
>>  
>>  static const struct scmi_imx_misc_proto_ops scmi_imx_misc_proto_ops = {
>> +	.misc_board_info = scmi_imx_misc_board_info,
>>  	.misc_cfg_info = scmi_imx_misc_cfg_info,
>>  	.misc_ctrl_set = scmi_imx_misc_ctrl_set,
>>  	.misc_ctrl_get = scmi_imx_misc_ctrl_get,
>> diff --git a/include/linux/scmi_imx_protocol.h b/include/linux/scmi_imx_protocol.h
>> index ff34d974046aa982fa9f5d46fc673412e01a532d..4950cd6f50aa7b3038bd519a7287e805f70e1cf5 100644
>> --- a/include/linux/scmi_imx_protocol.h
>> +++ b/include/linux/scmi_imx_protocol.h
>> @@ -56,6 +56,7 @@ struct scmi_imx_misc_ctrl_notify_report {
>>  #define MISC_MAX_BUILDTIME	16
>>  #define MISC_MAX_CFGNAME	16
>>  #define MISC_MAX_SINAME		16
>> +#define MISC_MAX_BRDNAME	16
>>  
>>  struct scmi_imx_misc_system_info {
>>  	u32 buildnum;
>> @@ -69,6 +70,8 @@ struct scmi_imx_misc_system_info {
>>  	u32 sirev;
>>  	u32 partnum;
>>  	u8 siname[MISC_MAX_SINAME];
>> +	u32 brd_attributes;
>> +	u8 brdname[MISC_MAX_BRDNAME];
>>  };
>
>Same comment here as before...

Just reply here for all comments regarding system_info.

I could add something below in next version:

struct scmi_imx_misc_firmware_info {
};
struct scmi_imx_misc_silicon_info {
};
struct scmi_imx_misc_board_info {
};

struct scm_imx_misc_system_info {
	struct scmi_imx_misc_firmware_info firmware_info;
	struct scmi_imx_misc_silicon_info si_info;
	struct scmi_imx_misc_board_info board_info;
};

>
>>  
>>  struct scmi_imx_misc_sys_sleep_rec {
>> @@ -89,6 +92,8 @@ struct scmi_imx_misc_syslog {
>>  };
>>  
>>  struct scmi_imx_misc_proto_ops {
>> +	int (*misc_board_info)(const struct scmi_protocol_handle *ph,
>> +			       struct scmi_imx_misc_system_info *info);
>>  	int (*misc_cfg_info)(const struct scmi_protocol_handle *ph,
>>  			     struct scmi_imx_misc_system_info *info);
>>  	int (*misc_ctrl_set)(const struct scmi_protocol_handle *ph, u32 id,
>>
>
>Anyway, LGTM.
>Reviewed-by: Cristian Marussi <cristian.marussi@....com>

Thanks,
Peng
> 
>Thanks,
>Cristian