From 403458e7ec0fae1345cd82128b71d5ab0b66fd77 Mon Sep 17 00:00:00 2001 From: Mario Scheithauer Date: Wed, 22 Aug 2018 13:03:55 +0200 Subject: siemens/mc_apl1: Extend circuit life by clock gating and power gating The firmware of devices connected to LPC should deassert the LPC CLKRUN# signal when there is no bus activity on LPC. Necessary changes: - Enable LPC CLKRUN# - Enable LPC PCE (Power Control Enable) - Enable LPC CCE (Clock Control Enable) - Remove I/O decoding range on LPC for COM 3 - Disable I/O UART driver Change-Id: I2fd80e3fdcf23658f97b8182a77df7e09ddf25d6 Signed-off-by: Mario Scheithauer Reviewed-on: https://review.coreboot.org/28268 Tested-by: build bot (Jenkins) Reviewed-by: Werner Zeh Reviewed-by: Paul Menzel --- src/soc/intel/apollolake/include/soc/pcr_ids.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'src/soc/intel/apollolake/include') diff --git a/src/soc/intel/apollolake/include/soc/pcr_ids.h b/src/soc/intel/apollolake/include/soc/pcr_ids.h index f8166932db..f6c990e495 100644 --- a/src/soc/intel/apollolake/include/soc/pcr_ids.h +++ b/src/soc/intel/apollolake/include/soc/pcr_ids.h @@ -2,6 +2,7 @@ * This file is part of the coreboot project. * * Copyright 2017 Intel Corporation. + * Copyright (C) 2018 Siemens AG * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -31,6 +32,7 @@ #define PID_GPIO_N 0xC5 #define PID_ITSS 0xD0 #define PID_RTC 0xD1 +#define PID_LPC 0xD2 #define PID_AUNIT 0x4d #define PID_BUNIT 0x4c -- cgit v1.2.3