From a24c81cd304c10911a8aae75f9d95bc1fa9574ca Mon Sep 17 00:00:00 2001 From: Shunqian Zheng Date: Tue, 10 Jan 2017 11:10:46 +0800 Subject: google/gru: add MAX_SDRAM_FREQ config to choose max ddr freq Gru/Kevin use 933 MHz (actually 928 MHz for better jitter) as max sdram frequency, while bob uses 800 MHz. It's normal some variants can't meet 928 MHz SI requirement and hence have to use a lower freq as spec. BUG=chrome-os-partner:61001 BRANCH=gru TEST=check dpll is 800 MHz on bob Change-Id: I6d19a351f25d1f48547715ce57c3a87d9505f6f1 Signed-off-by: Patrick Georgi Original-Commit-Id: 8176bfea52422c713f144ffec419752aeca66db2 Original-Change-Id: I46afba8d091f1489feeb20cafc44decaa81601fc Original-Signed-off-by: Caesar Wang Original-Signed-off-by: Shunqian Zheng Original-Reviewed-on: https://chromium-review.googlesource.com/420208 Original-Reviewed-by: Julius Werner Original-Commit-Queue: Shasha Zhao Original-Tested-by: Shasha Zhao Original-(cherry picked from commit eba5dff79eeedae5ff608d2d8d297ccf9c13cb55) Original-Reviewed-on: https://chromium-review.googlesource.com/448277 Original-Reviewed-by: Derek Basehore Reviewed-on: https://review.coreboot.org/18581 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth --- src/mainboard/google/gru/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/mainboard/google/gru/Kconfig') diff --git a/src/mainboard/google/gru/Kconfig b/src/mainboard/google/gru/Kconfig index 6361baca05..3048b01891 100644 --- a/src/mainboard/google/gru/Kconfig +++ b/src/mainboard/google/gru/Kconfig @@ -91,6 +91,13 @@ config MAINBOARD_PART_NUMBER default "Gru" if BOARD_GOOGLE_GRU default "Kevin" if BOARD_GOOGLE_KEVIN +# The default max sdram freq is 933M(actually 928M dpll), and +# 800M is another choice. +config MAX_SDRAM_FREQ + int + default 800 if BOARD_GOOGLE_BOB + default 933 + config GBB_HWID string depends on CHROMEOS -- cgit v1.2.3