alder_lake_bios/Intel/AlderLake/AlderLakeBoardPkg/Acpi/AcpiTables/Dsdt/SerialIoTimingParameters.asl

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/** @file
ACPI DSDT table
@copyright
INTEL CONFIDENTIAL
Copyright 2013 - 2021 Intel Corporation.
The source code contained or described herein and all documents related to the
source code ("Material") are owned by Intel Corporation or its suppliers or
licensors. Title to the Material remains with Intel Corporation or its suppliers
and licensors. The Material may contain trade secrets and proprietary and
confidential information of Intel Corporation and its suppliers and licensors,
and is protected by worldwide copyright and trade secret laws and treaty
provisions. No part of the Material may be used, copied, reproduced, modified,
published, uploaded, posted, transmitted, distributed, or disclosed in any way
without Intel's prior express written permission.
No license under any patent, copyright, trade secret or other intellectual
property right is granted to or conferred upon you by disclosure or delivery
of the Materials, either expressly, by implication, inducement, estoppel or
otherwise. Any license under such intellectual property rights must be
express and approved by Intel in writing.
Unless otherwise agreed by Intel in writing, you may not remove or alter
this notice or any other notice embedded in Materials by Intel or
Intel's suppliers or licensors in any way.
This file contains a 'Sample Driver' and is licensed as such under the terms
of your license agreement with Intel or your vendor. This file may be modified
by the user, subject to the additional terms of the license agreement.
@par Specification Reference:
**/
Method(PKG1, 1, Serialized) {
Name (PKG, Package(1){0})
Store(Arg0, Index(PKG,0))
Return (PKG)
}
Method(PKG3, 3, Serialized) {
Name (PKG, Package(3){0,0,0})
Store(Arg0, Index(PKG,0))
Store(Arg1, Index(PKG,1))
Store(Arg2, Index(PKG,2))
Return (PKG)
}
//
// SerialIo controllers use configurable timing parameters. It is possible but only optional to provide them through ACPI.
// If BIOS doesn't provide relevant methods, controllers' OS drivers will use default values, or in case of Windows use system registry.
// This sample code provides timing parameters optionally (based on USTP variable) and only for 3 SerialIo controllers out of 11.
//
if(USTP) {
//
// Standard Speed [SS] 100 kbit/s
// SCL L - [SSLX] Serial Clock Line LOW Period [DEFAULT: 640]
// SCL H - [SSHX] Serial Clock Line HIGH Period [DEFAULT: 528]
// SDA Hold [SSDX] Serial Data Line Hold Period [DEFAULT: 30]
//
// Fast Mode [FM] 400 kbit/s
// SCL L - [FMLX] Serial Clock Line LOW Period [DEFAULT: 160]
// SCL H - [FMHX] Serial Clock Line HIGH Period [DEFAULT: 28]
// SDA Hold [FMDX] Serial Data Line Hold Period [DEFAULT: 30]
//
// Fast Mode Plus [FM+] 1 Mbit/s
// SCL L - [FPLX] Serial Clock Line LOW Period [DEFAULT: 64]
// SCL H - [FPHX] Serial Clock Line HIGH Period [DEFAULT: 48]
// SDA Hold [FPDX] Serial Data Line Hold Period [DEFAULT: 30]
//
//
// High Speed Mode [HSM] 3.4 Mbit/s
// SCL L - [HSLX] Serial Clock Line LOW Period [DEFAULT: 22]
// SCL H - [HSHX] Serial Clock Line HIGH Period [DEFAULT: 11]
// SDA Hold [HSDX] Serial Data Line Hold Period [DEFAULT: 8]
//
Scope(\_SB.PC00.I2C0) {
Method(SSCN){Return(PKG3(SSH0,SSL0,SSD0))}
Method(FMCN){Return(PKG3(FMH0,FML0,FMD0))}
Method(FPCN){Return(PKG3(FPH0,FPL0,FPD0))}
Method(HSCN){Return(PKG3(HSH0,HSL0,HSD0))}
Method(M0D3){Return(PKG1(M0C0))}
Method(M1D3){Return(PKG1(M1C0))}
}
Scope(\_SB.PC00.I2C1) {
Method(SSCN){Return(PKG3(SSH1,SSL1,SSD1))}
Method(FMCN){Return(PKG3(FMH1,FML1,FMD1))}
Method(FPCN){Return(PKG3(FPH1,FPL1,FPD1))}
Method(HSCN){Return(PKG3(HSH1,HSL1,HSD1))}
Method(M0D3){Return(PKG1(M0C1))}
Method(M1D3){Return(PKG1(M1C1))}
}
Scope(\_SB.PC00.I2C2) {
Method(SSCN){Return(PKG3(SSH2,SSL2,SSD2))}
Method(FMCN){Return(PKG3(FMH2,FML2,FMD2))}
Method(FPCN){Return(PKG3(FPH2,FPL2,FPD2))}
Method(HSCN){Return(PKG3(HSH2,HSL2,HSD2))}
Method(M0D3){Return(PKG1(M0C2))}
Method(M1D3){Return(PKG1(M1C2))}
}
Scope(\_SB.PC00.I2C3) {
Method(SSCN){Return(PKG3(SSH3,SSL3,SSD3))}
Method(FMCN){Return(PKG3(FMH3,FML3,FMD3))}
Method(FPCN){Return(PKG3(FPH3,FPL3,FPD3))}
Method(HSCN){Return(PKG3(HSH3,HSL3,HSD3))}
Method(M0D3){Return(PKG1(M0C3))}
Method(M1D3){Return(PKG1(M1C3))}
}
Scope(\_SB.PC00.I2C4) {
Method(SSCN){Return(PKG3(SSH4,SSL4,SSD4))}
Method(FMCN){Return(PKG3(FMH4,FML4,FMD4))}
Method(FPCN){Return(PKG3(FPH4,FPL4,FPD4))}
Method(HSCN){Return(PKG3(HSH4,HSL4,HSD4))}
Method(M0D3){Return(PKG1(M0C4))}
Method(M1D3){Return(PKG1(M1C4))}
}
Scope(\_SB.PC00.I2C5) {
Method(SSCN){Return(PKG3(SSH5,SSL5,SSD5))}
Method(FMCN){Return(PKG3(FMH5,FML5,FMD5))}
Method(FPCN){Return(PKG3(FPH5,FPL5,FPD5))}
Method(HSCN){Return(PKG3(HSH5,HSL5,HSD5))}
Method(M0D3){Return(PKG1(M0C5))}
Method(M1D3){Return(PKG1(M1C5))}
}
Scope(\_SB.PC00.I2C6) {
Method(SSCN){Return(PKG3(SSH6,SSL6,SSD6))}
Method(FMCN){Return(PKG3(FMH6,FML6,FMD6))}
Method(FPCN){Return(PKG3(FPH6,FPL6,FPD6))}
Method(HSCN){Return(PKG3(HSH6,HSL6,HSD6))}
Method(M0D3){Return(PKG1(M0CC))}
Method(M1D3){Return(PKG1(M1CC))}
}
Scope(\_SB.PC00.I2C7) {
Method(SSCN){Return(PKG3(SSH7,SSL7,SSD7))}
Method(FMCN){Return(PKG3(FMH7,FML7,FMD7))}
Method(FPCN){Return(PKG3(FPH7,FPL7,FPD7))}
Method(HSCN){Return(PKG3(HSH7,HSL7,HSD7))}
Method(M0D3){Return(PKG1(M0CD))}
Method(M1D3){Return(PKG1(M1CD))}
}
Scope(\_SB.PC00.SPI0) {
Method(M0D3){Return(PKG1(M0C6))} // the default value is 200
Method(M1D3){Return(PKG1(M1C6))} // the default value is 2000
}
Scope(\_SB.PC00.SPI1) {
Method(M0D3){Return(PKG1(M0C7))} // the default value is 200
Method(M1D3){Return(PKG1(M1C7))} // the default value is 2000
}
Scope(\_SB.PC00.SPI2) {
Method(M0D3){Return(PKG1(M0C8))} // the default value is 200
Method(M1D3){Return(PKG1(M1C8))} // the default value is 2000
}
Scope(\_SB.PC00.UA00) {
Method(M0D3){Return(PKG1(M0C9))} // the default value is 200
Method(M1D3){Return(PKG1(M1C9))} // the default value is 200
}
Scope(\_SB.PC00.UA01) {
Method(M0D3){Return(PKG1(M0CA))} // the default value is 200
Method(M1D3){Return(PKG1(M1CA))} // the default value is 200
}
Scope(\_SB.PC00.UA02) {
Method(M0D3){Return(PKG1(M0CB))} // the default value is 200
Method(M1D3){Return(PKG1(M1CB))} // the default value is 200
}
}