Change in coreboot[master]: mb/siemens/mc_ehl: Disable all P-States

[Werner Zeh (Code Review)]

Werner Zeh has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/58894 )

Change subject: mb/siemens/mc_ehl: Disable all P-States
......................................................................

mb/siemens/mc_ehl: Disable all P-States

In order to get a reliable real-time performance disable all P-States
for all mc_ehl based mainboard.

Change-Id: I22857cc0f1476483ca82c1c872e4519e4b350ea9
Signed-off-by: Werner Zeh 
---
M src/mainboard/siemens/mc_ehl/mainboard.c
1 file changed, 3 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/94/58894/1

diff --git a/src/mainboard/siemens/mc_ehl/mainboard.c b/src/mainboard/siemens/mc_ehl/mainboard.c
index eff2d21..fc03115 100644
--- a/src/mainboard/siemens/mc_ehl/mainboard.c
+++ b/src/mainboard/siemens/mc_ehl/mainboard.c
@@ -122,6 +122,9 @@

/* Set maximum package C-state to PkgC0C1 */
    params->PkgCStateLimit = 0;
+
+	/* Disable P-States */
+	params->MaxRatio = 0;
 }

static void mainboard_init(void *chip_info)