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| author | Dean Sanner <dsanner@us.ibm.com> | 2018-03-07 08:23:19 -0600 |
|---|---|---|
| committer | Daniel M. Crowell <dcrowell@us.ibm.com> | 2018-03-08 21:25:27 -0500 |
| commit | d6f9a2206311d4b7e67462215e736253d9c6a5b1 (patch) | |
| tree | a42536a33ed83a58ceb896b40b160e94ac31eb85 /src/usr | |
| parent | b98f4c6b59fa881b95d1022333ffafb2f927427b (diff) | |
| download | talos-hostboot-d6f9a2206311d4b7e67462215e736253d9c6a5b1.tar.gz talos-hostboot-d6f9a2206311d4b7e67462215e736253d9c6a5b1.zip | |
Force 25G Nvlink speed on P9N DD2.1
Normally the OBUS PLL frequency is controlled via the MRW,
however P9NDD2.1 has a bug that forces the OBus freq to 25G.
Desire is to allow the MRW to set to a higher freq, but MRW
doesn't have entries for per chip EC, so this commit just
handles down leveling P9N DD2.1 (as a chip restriction)
Change-Id: I542f7810a69facb919cc3889ae3ed5ca0a233445
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/55195
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: William G. Hoffa <wghoffa@us.ibm.com>
CI-Ready: Dean Sanner <dsanner@us.ibm.com>
CI-Ready: Corey V. Swenson <cswenson@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Reviewed-by: ERICH J. HAUPTLI <ejhauptl@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>
Diffstat (limited to 'src/usr')
| -rw-r--r-- | src/usr/isteps/istep06/call_host_voltage_config.C | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/usr/isteps/istep06/call_host_voltage_config.C b/src/usr/isteps/istep06/call_host_voltage_config.C index 060e7ebe0..6cb647e9b 100644 --- a/src/usr/isteps/istep06/call_host_voltage_config.C +++ b/src/usr/isteps/istep06/call_host_voltage_config.C @@ -5,7 +5,7 @@ /* */ /* OpenPOWER HostBoot Project */ /* */ -/* Contributors Listed Below - COPYRIGHT 2016,2017 */ +/* Contributors Listed Below - COPYRIGHT 2016,2018 */ /* [+] International Business Machines Corp. */ /* */ /* */ @@ -352,6 +352,25 @@ void* call_host_voltage_config( void *io_pArgs ) "ATTR_FREQ_X_MHZ = %d", l_sys->getAttr<ATTR_FREQ_X_MHZ>()); + //Nimbus DD21 only supports OBUS PLL of 1563(versus product of 1611) + //Force it because of a chip bug instead of letting MRW control + PVR_t l_pvr( mmio_pvr_read() & 0xFFFFFFFF ); + if( l_pvr.isNimbusDD21() ) + { + TRACFCOMP(ISTEPS_TRACE::g_trac_isteps_trace, + "call_host_voltage_config.C::" + "Nimbus DD2.1 -- Forcing ATTR_FREQ_X_MHZ = %d", + l_sys->getAttr<ATTR_FREQ_X_MHZ>()); + + TARGETING::ATTR_FREQ_O_MHZ_type l_freq_array = + {OBUS_PLL_FREQ_LIST_P9N_21[0],OBUS_PLL_FREQ_LIST_P9N_21[0], + OBUS_PLL_FREQ_LIST_P9N_21[0], OBUS_PLL_FREQ_LIST_P9N_21[0]}; + assert(l_proc-> + trySetAttr<TARGETING::ATTR_FREQ_O_MHZ>(l_freq_array), + "call_host_voltage_config.C failed to set ATTR_FREQ_O_MHZ"); + } + + // get the child EQ targets targetService().getAssociated( l_eqList, |
