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

Peng Fan
2025-06-27T06:06:09Z

MISC protocol supports getting board information. Add the API for user
to retrieve the information from SM

Signed-off-by: Peng Fan <peng.fan@nxp.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];
};

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,

--
2.37.1