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| author | LuluTHSu <Lulu_Su@wistron.com> | 2020-12-09 16:40:54 +0800 |
|---|---|---|
| committer | Vasant Hegde <hegdevasant@linux.vnet.ibm.com> | 2021-01-06 16:58:02 +0530 |
| commit | 240073ffa049b38ee0810ae996436a2b34a051c1 (patch) | |
| tree | f122e8dbb4216c22a960df0c9cb2faa0078fa2a6 | |
| parent | bd136e7df7ba93a9283af6b8c82b949367693521 (diff) | |
| download | skiboot-240073ffa049b38ee0810ae996436a2b34a051c1.zip skiboot-240073ffa049b38ee0810ae996436a2b34a051c1.tar.gz skiboot-240073ffa049b38ee0810ae996436a2b34a051c1.tar.bz2 | |
platform/mowgli: Limit PHB0/(pec0) to gen3 speed
[ Upstream commit 127a3ee2417a2a71b63cca5fd7055d9b64939bb1 ]
Use the method provided by Frederic:
Add the "ibm, maximum link speed" attribute to the PHB device tree at index 0.
The phb4.c code will looks for it and set up the link correctly.
Signed-off-by: LuluTHSu <Lulu_Su@wistron.com>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
| -rw-r--r-- | platforms/astbmc/mowgli.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/platforms/astbmc/mowgli.c b/platforms/astbmc/mowgli.c index 213d734..df83319 100644 --- a/platforms/astbmc/mowgli.c +++ b/platforms/astbmc/mowgli.c @@ -49,6 +49,21 @@ static void vpd_dt_fixup(void) } } +static void phb0_fixup(void) +{ + struct dt_node *stk; + u32 phb_index; + + /* Limit PHB0/(pec0) to gen3 speed */ + dt_for_each_compatible(dt_root, stk, "ibm,power9-phb-stack") { + phb_index = dt_prop_get_u32_def(stk, "ibm,phb-index", -1); + if (phb_index == 0) { + dt_check_del_prop(stk, "ibm,max-link-speed"); + dt_add_property_cells(stk, "ibm,max-link-speed", 3); + } + } +} + static bool mowgli_probe(void) { if (!dt_node_is_compatible(dt_root, "ibm,mowgli")) @@ -63,6 +78,7 @@ static bool mowgli_probe(void) vpd_dt_fixup(); slot_table_init(mowgli_phb_table); + phb0_fixup(); return true; } |