goto err_bus_cleanup;
}
+ if (master->ops->set_speed) {
+ ret = master->ops->set_speed(master, I3C_OPEN_DRAIN_SLOW_SPEED);
+ if (ret)
+ goto err_bus_cleanup;
+ }
+
/*
* Reset all dynamic address that may have been assigned before
* (assigned by the bootloader for example).
if (ret && ret != I3C_ERROR_M2)
goto err_bus_cleanup;
+ if (master->ops->set_speed) {
+ master->ops->set_speed(master, I3C_OPEN_DRAIN_NORMAL_SPEED);
+ if (ret)
+ goto err_bus_cleanup;
+ }
+
/* Disable all slave events before starting DAA. */
ret = i3c_master_disec_locked(master, I3C_BROADCAST_ADDR,
I3C_CCC_EVENT_SIR | I3C_CCC_EVENT_MR |
I3C_BUS_MODE_MIXED_SLOW,
};
+/**
+ * enum i3c_open_drain_speed - I3C open-drain speed
+ * @I3C_OPEN_DRAIN_SLOW_SPEED: Slow open-drain speed for sending the first
+ * broadcast address. The first broadcast address at this speed
+ * will be visible to all devices on the I3C bus. I3C devices
+ * working in I2C mode will turn off their spike filter when
+ * switching into I3C mode.
+ * @I3C_OPEN_DRAIN_NORMAL_SPEED: Normal open-drain speed in I3C bus mode.
+ */
+enum i3c_open_drain_speed {
+ I3C_OPEN_DRAIN_SLOW_SPEED,
+ I3C_OPEN_DRAIN_NORMAL_SPEED,
+};
+
/**
* enum i3c_addr_slot_status - I3C address slot status
* @I3C_ADDR_SLOT_FREE: address is free
* NULL.
* @enable_hotjoin: enable hot join event detect.
* @disable_hotjoin: disable hot join event detect.
+ * @set_speed: adjust I3C open drain mode timing.
*/
struct i3c_master_controller_ops {
int (*bus_init)(struct i3c_master_controller *master);
struct i3c_ibi_slot *slot);
int (*enable_hotjoin)(struct i3c_master_controller *master);
int (*disable_hotjoin)(struct i3c_master_controller *master);
+ int (*set_speed)(struct i3c_master_controller *master, enum i3c_open_drain_speed speed);
};
/**