ibm-fsp: Use finalise_dt() for DT fixups

>From Gautham's patch to fix pstates_init() that this was based on:

> On FSP based systems (particularly POWER8), we perform
> occ_pstates_init() late in the boot to allow OCC to be loaded. Hence
> this was being performed in platform.exit(). occ_pstates_init() would
> add pstate information into the device-tree.
>
> A recent commit 9fc0c1287ada ("Move FSP specific op-panel calls to
> platform.exit()") moved the invocation of platform.exit() after the
> creation of device-tree blob. As a result, on FSP based systems, we
> don't have the pstate information in the device-tree, and thus the
> Kernel is unable to perform frequency scaling.
>
> Fix this by moving occ_pstates_init() out of ibm_fsp_exit() and call
> it before the creation of the device-tree blob.

The same patch also broke fast-reboot on ZZ. Without this patch applied
we get the following assert() fail when fast rebooting:

[ 1153.398889405,5] CUPD: Waiting read marker LID and in flight parsm completion...
[ 1153.398892228,3] Duplicate property "mi-version" in node /ibm,opal/firmware
[ 1153.398894036,0] Aborting!
CPU 0054 Backtrace:
 S: 0000000031ea39b0 R: 0000000030013828   .backtrace+0x34
 S: 0000000031ea3a70 R: 000000003001b268   ._abort+0x4c
 S: 0000000031ea3af0 R: 0000000030027788   .new_property+0x80
 S: 0000000031ea3b80 R: 00000000300278d0   .dt_add_property+0xa8
 S: 0000000031ea3c10 R: 0000000030081a98   .fsp_code_update_wait_vpd+0x19c
 S: 0000000031ea3d10 R: 000000003008ff98   .ibm_fsp_exit+0x1c
 S: 0000000031ea3d80 R: 0000000030014864   .load_and_boot_kernel+0xb14
 S: 0000000031ea3e60 R: 000000003002685c   .fast_reboot_entry+0x38c
 S: 0000000031ea3f00 R: 0000000030002988   reset_fast_reboot_wakeup+0x40

This happens because fsp_code_update_wait_vpd(true) adds some properties
to the DT so moving it to finalise_dt fixes that crash too.

Cc: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Cc: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Cc: Vaidyanathan Srinivasan <svaidy@linux.ibm.com>
Fixes: 9fc0c1287ada ("Move FSP specific op-panel calls to platform.exit()")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Tested-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions