[XS] Change in coreboot[main]: mb/siemens/{mc_ehl2,mc_ehl3,mc_ehl5}: Enable real-time tuning

[Mario Scheithauer (Code Review)]

Mario Scheithauer has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/84391?usp=email )

Change subject: mb/siemens/{mc_ehl2,mc_ehl3,mc_ehl5}: Enable real-time tuning
......................................................................

mb/siemens/{mc_ehl2,mc_ehl3,mc_ehl5}: Enable real-time tuning

The real-time feature should also be activated for all mc_ehl
mainboards, as it has already been done for mainboard mc_ehl1. It
improves performance in the real-time environment for these mainboards.

Change-Id: I04859b2f32bc11344b0620925f2414e7a6df625e
Signed-off-by: Mario Scheithauer 
---
M src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
M src/mainboard/siemens/mc_ehl/variants/mc_ehl3/devicetree.cb
M src/mainboard/siemens/mc_ehl/variants/mc_ehl5/devicetree.cb
3 files changed, 9 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/84391/1

diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
index abad9c7..67ece6d 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
@@ -133,6 +133,9 @@
    # Disable L1 prefetcher for real-time demands
    register "L1_prefetcher_disable" = "true"

+	# Enable real-time tuning
+	register "realtime_tuning_enable" = "true"
+
    device domain 0 on
    	device pci 00.0 on	end # Host Bridge
    	device pci 02.0 on	end # Integrated Graphics Device
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/devicetree.cb b/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/devicetree.cb
index db12aa3..54bd62b 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/devicetree.cb
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl3/devicetree.cb
@@ -135,6 +135,9 @@
    # Disable L1 prefetcher for real-time demands
    register "L1_prefetcher_disable" = "true"

+	# Enable real-time tuning
+	register "realtime_tuning_enable" = "true"
+
    device domain 0 on
    	device pci 00.0 on	end # Host Bridge
    	device pci 02.0 on	end # Integrated Graphics Device
diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl5/devicetree.cb b/src/mainboard/siemens/mc_ehl/variants/mc_ehl5/devicetree.cb
index 8fe9b93..5998e0e 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl5/devicetree.cb
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl5/devicetree.cb
@@ -133,6 +133,9 @@
    # Disable L1 prefetcher for real-time demands
    register "L1_prefetcher_disable" = "true"

+	# Enable real-time tuning
+	register "realtime_tuning_enable" = "true"
+
    device domain 0 on
    	device pci 00.0 on	end # Host Bridge
    	device pci 02.0 on	end # Integrated Graphics Device