On 1/20/26 06:18, Kane Chen via wrote:
From: Kane-Chen-AS <[email protected]>
The AST2700 SoC can be integrated with multiple AST1700 IO expanders.
Without unique identifiers, the I2C bus object names for the primary
BMC SoC and multiple expander chips may collide in the QOM
(QEMU Object Model) tree.
To resolve this, introduce a bus-label property to the AST1700 SoC.
This allows the parent SoC (AST2700) to assign a unique prefix
(e.g., "ioexp0", "ioexp1") to each AST1700 instance. These labels
ensure that the bus naming hierarchy remains distinct and traceable
across different expanders.
Signed-off-by: Kane-Chen-AS <[email protected]>
---
include/hw/arm/aspeed_ast1700.h | 1 +
hw/arm/aspeed_ast1700.c | 1 +
hw/arm/aspeed_ast27x0.c | 3 +++
3 files changed, 5 insertions(+)
I don't think this change is needed.
Setting the AspeedI2CState "bus-label" property in aspeed_ast1700_realize()
should be sufficient.
Thanks,
C.
