cxl: Increase timeout for detection of AFU mmio hang
PSL designers recommend a larger value for the mmio hang pulse, 256 us instead of 1 us. The CAIA architecture states that it needs to be smaller than 1/2 of the RTOS timeout set in the PHB for outbound non-posted transactions, which is still (easily) the case here. Signed-off-by: NFrederic Barrat <fbarrat@linux.vnet.ibm.com> Acked-by: NIan Munsie <imunsie@au1.ibm.com> Tested-by: NFrank Haverkamp <haver@linux.vnet.ibm.com> Tested-by: NManoj Kumar <manoj@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
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