[PATCH] soc: qcom: cmd-db: Add optional support for device programmer flows

[Balaji Selvanathan]

Add QCOM_COMMAND_DB_OPTIONAL Kconfig option to allow the Command DB
driver to bind successfully even when CMD DB data is missing or has
an invalid magic number.

This is required for device programmer flows where U-Boot runs
without AOP (Always On Processor) being invoked. Since AOP is
responsible for populating CMD DB data, device programmer scenarios
lack valid CMD DB and would otherwise fail to boot.

Normal boot flows should keep this disabled
as they require valid CMD DB data populated by AOP.

Signed-off-by: Balaji Selvanathan <balaji.selvanathan at oss.qualcomm.com>
---
 drivers/soc/qcom/Kconfig  | 16 ++++++++++++++++
 drivers/soc/qcom/cmd-db.c | 10 ++++++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index 8243805e46a..239d87e044f 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -18,6 +18,22 @@ config QCOM_COMMAND_DB
 	  resource on a RPM-hardened platform must use this database to get
 	  SoC specific identifier and information for the shared resources.
 
+config QCOM_COMMAND_DB_OPTIONAL
+	bool "Allow operation without Command DB data"
+	depends on QCOM_COMMAND_DB
+	help
+	  Allow the Command DB driver to bind successfully even when CMD DB
+	  data is not populated or has an invalid magic number.
+
+	  This is useful for platforms where CMD DB is not populated by
+
+	  When enabled, missing CMD DB will generate warnings but allow boot
+	  to continue. Consumer drivers must handle cmd_db API failures
+	  gracefully by checking return values.
+
+	  If unsure, say N. Most production Qualcomm platforms require
+	  valid CMD DB data.
+
 config QCOM_RPMH
 	bool "Qualcomm RPMh support"
 	depends on QCOM_COMMAND_DB
diff --git a/drivers/soc/qcom/cmd-db.c b/drivers/soc/qcom/cmd-db.c
index d0a6047b8a6..b4682d811f7 100644
--- a/drivers/soc/qcom/cmd-db.c
+++ b/drivers/soc/qcom/cmd-db.c
@@ -252,8 +252,18 @@ static int cmd_db_bind(struct udevice *dev)
 
 	cmd_db_header = base;
 	if (!cmd_db_magic_matches(cmd_db_header)) {
+#ifdef CONFIG_QCOM_COMMAND_DB_OPTIONAL
+		log_warning("%s: CMD DB magic not found (0x%02x%02x%02x%02x)\n",
+			    __func__, cmd_db_header->magic[0], cmd_db_header->magic[1],
+			    cmd_db_header->magic[2], cmd_db_header->magic[3]);
+		log_warning("%s: CMD DB data unavailable, resource queries will fail\n",
+			    __func__);
+		cmd_db_header = NULL;
+		return 0;
+#else
 		log_err("%s: Invalid Command DB Magic\n", __func__);
 		return -EINVAL;
+#endif
 	}
 
 	return 0;

---
base-commit: f0000b4a57e9edf8ff8454b9056d767466dff57f
change-id: 20260409-cmddb-394afa003818

Best regards,
-- 
Balaji Selvanathan <balaji.selvanathan at oss.qualcomm.com>