Change in coreboot[master]: mb/google/poopy/variants/nami: Add Pmax setting

[Gaggery Tsai (Code Review)]

Gaggery Tsai has uploaded this change for review. ( https://review.coreboot.org/23640

Change subject: mb/google/poopy/variants/nami: Add Pmax setting
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mb/google/poopy/variants/nami: Add Pmax setting

This patch adds the Pmax setting in device tree. The Pmax is from
MAX(PL4_sku1, PL4_sku2, ..) + ROPmax. Given ROPmax is 30W and
the maximum PL4 is from U42, hence the Pmax = 71W + 30W = 101W.

BUG=b:72138778
BRANCH=None
TEST=USE=fw_debug emerge-nami chromeos-mrc coreboot chromeos-bootimage
         & ensure the Pmax value is passed to FSP-S.

Change-Id: Ief6a134dc5b6bd2b8e07b4a44450e99ff26402d9
Signed-off-by: Gaggery Tsai 
---
M src/mainboard/google/poppy/variants/nami/devicetree.cb
1 file changed, 1 insertion(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/40/23640/1

diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 55ecb26..7c38a3a 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -229,6 +229,7 @@
    register "speed_shift_enable" = "1"

register "tcc_offset" = "10"     # TCC of 90C
+	register "psys_pmax" = "101"

# Lock Down
    register "chipset_lockdown" = "CHIPSET_LOCKDOWN_COREBOOT"