[PATCH V2 14/17] i3c: mipi-i3c-hci: Remove invalid HDR-BT and Fm/Fm+ definitions
From: Adrian Hunter
Date: Thu Sep 17 2026 - 15:48:25 EST
Several HCI definitions describe capabilities or modes that are not
defined by any released version of the I3C HCI specification.
HC_CAP_HDR_BT_EN uses a reserved HC_CAPABILITIES bit. Similarly,
MODE_I3C_HDR_BT uses a MODE value reserved for I3C transfers, while
MODE_I3C_Fm_FmP cannot be encoded in the 3-bit Command Descriptor MODE
field.
These definitions are currently unused, so there is no functional
change. Remove them to avoid implying support for non-existent HCI
features and to prevent future misuse.
Assisted-by: GitHub-Copilot:claude-opus-5
Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
---
Changes in V2:
Added Frank Li's Reviewed-by tag.
drivers/i3c/master/mipi-i3c-hci/cmd_v1.c | 2 --
drivers/i3c/master/mipi-i3c-hci/core.c | 1 -
2 files changed, 3 deletions(-)
diff --git a/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c b/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
index 3b9345718d27..9910df53c013 100644
--- a/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
+++ b/drivers/i3c/master/mipi-i3c-hci/cmd_v1.c
@@ -108,8 +108,6 @@ enum hci_cmd_mode {
MODE_I3C_SDR4 = 0x4,
MODE_I3C_HDR_TSx = 0x5,
MODE_I3C_HDR_DDR = 0x6,
- MODE_I3C_HDR_BT = 0x7,
- MODE_I3C_Fm_FmP = 0x8,
MODE_I2C_Fm = 0x0,
MODE_I2C_FmP = 0x1,
MODE_I2C_UD1 = 0x2,
diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index 4629a16debc9..7a39be64c4e1 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -55,7 +55,6 @@
#define HC_CAP_DIRECT_COMMANDS_EN BIT(18)
#define HC_CAP_MULTI_LANE_EN BIT(15)
#define HC_CAP_CMD_CCC_DEFBYTE BIT(10)
-#define HC_CAP_HDR_BT_EN BIT(8)
#define HC_CAP_HDR_TS_EN BIT(7)
#define HC_CAP_HDR_DDR_EN BIT(6)
#define HC_CAP_NON_CURRENT_MASTER_CAP BIT(5) /* master handoff capable */
--
2.53.0