Re: [PATCH] drm/ast: Fix soft lockup

Hi Thomas and Jocelyn, What we do in ast_dp_set_on_off() is a handshake between host driver and bmc-fw to confirm the operation, on/off, is completed. We use some scratch registers in bmc to handshake with host. This handshake only work if BMC's scu-lock is opened. If scu-lock is opened too

Re: [PATCH] drm/ast: Fix soft lockup

Hi Thomas and Jocelyn, What we do in ast_dp_set_on_off() is a handshake between host driver and bmc-fw to confirm the operation, on/off, is completed. We use some scratch registers in bmc to handshake with host. This handshake only work if BMC's scu-lock is opened. If scu-lock is opened too