[PATCH v6 1/4] firmware: ti_sci: add BOARDCFG_MANAGED mode support

Thomas Richard (TI)
2026-04-27T12:22:26Z

In BOARDCFG_MANAGED mode, the low power mode configuration is done
statically for the DM via the boardcfg. Constraints are not supported, and
prepare_sleep() is not needed.

Reviewed-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Kendall Willis <k-willis@ti.com>
Signed-off-by: Thomas Richard (TI) <thomas.richard@bootlin.com>
---
drivers/firmware/ti_sci.c | 10 +++++++---
drivers/firmware/ti_sci.h | 2 ++
2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index dd9911b1cc11..eaeaaae94142 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -3772,8 +3772,11 @@ static int ti_sci_prepare_system_suspend(struct ti_sci_info *info)
return ti_sci_cmd_prepare_sleep(&info->handle,
TISCI_MSG_VALUE_SLEEP_MODE_DM_MANAGED,
0, 0, 0);
+ } else if (info->fw_caps & MSG_FLAG_CAPS_LPM_BOARDCFG_MANAGED) {
+ /* Nothing to do in the BOARDCFG_MANAGED mode */
+ return 0;
} else {
- /* DM Managed is not supported by the firmware. */
+ /* DM Managed and BoardCfg Managed are not supported by the firmware. */
dev_err(info->dev, "Suspend to memory is not supported by the firmware\n");
return -EOPNOTSUPP;
}
@@ -4011,12 +4014,13 @@ static int ti_sci_probe(struct platform_device *pdev)
}

ti_sci_msg_cmd_query_fw_caps(&info->handle, &info->fw_caps);
- dev_dbg(dev, "Detected firmware capabilities: %s%s%s%s%s\n",
+ dev_dbg(dev, "Detected firmware capabilities: %s%s%s%s%s%s\n",
info->fw_caps & MSG_FLAG_CAPS_GENERIC ? "Generic" : "",
info->fw_caps & MSG_FLAG_CAPS_LPM_PARTIAL_IO ? " Partial-IO" : "",
info->fw_caps & MSG_FLAG_CAPS_LPM_DM_MANAGED ? " DM-Managed" : "",
info->fw_caps & MSG_FLAG_CAPS_LPM_ABORT ? " LPM-Abort" : "",
- info->fw_caps & MSG_FLAG_CAPS_IO_ISOLATION ? " IO-Isolation" : ""
+ info->fw_caps & MSG_FLAG_CAPS_IO_ISOLATION ? " IO-Isolation" : "",
+ info->fw_caps & MSG_FLAG_CAPS_LPM_BOARDCFG_MANAGED ? " BoardConfig-Managed" : ""
);

ti_sci_setup_ops(info);
diff --git a/drivers/firmware/ti_sci.h b/drivers/firmware/ti_sci.h
index 4616127e33ff..d90de59e29eb 100644
--- a/drivers/firmware/ti_sci.h
+++ b/drivers/firmware/ti_sci.h
@@ -150,6 +150,7 @@ struct ti_sci_msg_req_reboot {
* MSG_FLAG_CAPS_LPM_DM_MANAGED: LPM can be managed by DM
* MSG_FLAG_CAPS_LPM_ABORT: Abort entry to LPM
* MSG_FLAG_CAPS_IO_ISOLATION: IO Isolation support
+ * MSG_FLAG_CAPS_LPM_BOARDCFG_MANAGED: LPM config done statically for the DM via boardcfg
*
* Response to a generic message with message type TI_SCI_MSG_QUERY_FW_CAPS
* providing currently available SOC/firmware capabilities. SoC that don't
@@ -162,6 +163,7 @@ struct ti_sci_msg_resp_query_fw_caps {
#define MSG_FLAG_CAPS_LPM_DM_MANAGED TI_SCI_MSG_FLAG(5)
#define MSG_FLAG_CAPS_LPM_ABORT TI_SCI_MSG_FLAG(9)
#define MSG_FLAG_CAPS_IO_ISOLATION TI_SCI_MSG_FLAG(7)
+#define MSG_FLAG_CAPS_LPM_BOARDCFG_MANAGED TI_SCI_MSG_FLAG(12)
#define MSG_MASK_CAPS_LPM GENMASK_ULL(4, 1)
u64 fw_caps;
} __packed;

--
2.53.0