[PATCH v5 2/4] i3c: Add more parameters for controllers to the header

Wolfram Sang wsa+renesas at sang-engineering.com
Thu Jul 24 02:41:41 PDT 2025


Add standard timing value definition from specification.

Signed-off-by: Wolfram Sang <wsa+renesas at sang-engineering.com>
Tested-by: Tommaso Merciai <tommaso.merciai.xr at bp.renesas.com>
---

Changes since v4:
* fixed a spelling error in the commit message
* dropped the subsystem wide default timeout value as per:
  https://lore.kernel.org/r/aIH1zUb8tyIlyC3S@shikoro
* added tag, thanks Tommaso!

 include/linux/i3c/master.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index 7dfcbe530515..043f5c7ff398 100644
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -254,6 +254,10 @@ 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
 
 /**
-- 
2.47.2




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