coreboot
coreboot is an Open Source project aimed at replacing the proprietary BIOS found in most computers.
pch.h
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1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #ifndef _SOC_TIGERLAKE_PCH_H_
4 #define _SOC_TIGERLAKE_PCH_H_
5 
6 #define PCIE_CLK_NOTUSED 0xFF
7 #define PCIE_CLK_LAN 0x70
8 #define PCIE_CLK_FREE 0x80
9 
10 #endif