[PATCH v4 2/4] i3c: Add more parameters for controllers to the header

Wolfram Sang wsa+renesas at sang-engineering.com
Tue Jul 22 12:07:44 PDT 2025


Add standard timing value defination from specification.

Signed-off-by: Wolfram Sang <wsa+renesas at sang-engineering.com>
---
Changes since v3:
* Reworded commit message

 include/linux/i3c/master.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index 7dfcbe530515..8375bee69817 100644
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -254,8 +254,15 @@ struct i3c_device {
 #define I3C_BUS_I2C_FM_SCL_MAX_RATE		400000
 #define I3C_BUS_I3C_SCL_MAX_RATE	12900000
 #define I3C_BUS_I3C_SCL_TYP_RATE	12500000
+#define I3C_BUS_TAVAL_MIN_NS		1000
+#define I3C_BUS_TBUF_MIXED_FM_MIN_NS	1300
+#define I3C_BUS_THIGH_MIXED_MAX_NS	41
+#define I3C_BUS_TIDLE_MIN_NS		200000
 #define I3C_BUS_TLOW_OD_MIN_NS		200
 
+/* TODO: Document a reason for this value */
+#define I3C_BUS_XFER_TIMEOUT_TYP_JIF	(msecs_to_jiffies(1000))
+
 /**
  * enum i3c_bus_mode - I3C bus mode
  * @I3C_BUS_MODE_PURE: only I3C devices are connected to the bus. No limitation
-- 
2.47.2




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