[Skiboot-stable] [PATCH 2/2] hw/phb4.c: limit the max-link-speed of Mowgli's phb0 to gen3

[Lulu Su]

From: LuluTHSu <Lulu_Su at wistron.com>

Add a condition in phb4_get_max_link_speed(),
when it's mowgli's phb0, max-link-speed is set to gen3.
For mowgli platform spec.

Cc: skiboot-stable at lists.ozlabs.org
Signed-off-by: LuluTHSu <Lulu_Su at wistron.com>
---
 hw/phb4.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/phb4.c b/hw/phb4.c
index 17a233f..ef6b176 100644
--- a/hw/phb4.c
+++ b/hw/phb4.c
@@ -2966,6 +2966,10 @@ static unsigned int phb4_get_max_link_speed(struct phb4 *p, struct dt_node *np)
 
 	/* Priority order: NVRAM -> dt -> GEN3 dd2.00 -> GEN4 */
 	max_link_speed = 4;
+	if(dt_node_is_compatible(dt_root,"ibm,mowgli") && p->pec==0){
+		max_link_speed = 3;
+		prlog(PR_DEBUG, "Set the max link speed of Mowgli phb0 to gen3\n");
+	}
 	if (p->rev == PHB4_REV_NIMBUS_DD20 &&
 	    ((0xf & chip->ec_level) == 0) && chip->ec_rev == 0)
 		max_link_speed = 3;
-- 
2.7.4


---------------------------------------------------------------------------------------------------------------------------------------------------------------
This email contains confidential or legally privileged information and is for the sole use of its intended recipient. 
Any unauthorized review, use, copying or distribution of this email or the content of this email is strictly prohibited.
If you are not the intended recipient, you may reply to the sender and should delete this e-mail immediately.
---------------------------------------------------------------------------------------------------------------------------------------------------------------