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/** @file
*
* [DSDT] Serial devices (UART).
*
* Copyright (c) 2018, Andrey Warkentin <andrey.warkentin@gmail.com>
* Copyright (c) Microsoft Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
// PL011 based UART.
Device (URT0)
{
Name (_HID, "BCM2837")
Name (_CID, "HID3123")
Name (_UID, 0x4)
Name (_CCA, 0x0)
Method (_STA)
{
Return (0xf)
}
Method (_CRS, 0x0, Serialized)
{
Name (RBUF, ResourceTemplate ()
{
MEMORY32FIXED (ReadWrite, 0x3F201000, 0x1000,)
Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive) { 0x59 }
})
Return (RBUF)
}
Name (CLCK, 3000000)
Name (_DSD, Package ()
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"), Package ()
{
Package (2) { "clock-frequency", CLCK },
}
})
}
//
// UART Mini.
//
// This device is referenced in the DBG2 table, which will cause the system to
// not start the driver when the debugger is enabled and to mark the device
// with problem code 53 (CM_PROB_USED_BY_DEBUGGER).
//
Device (URTM)
{
Name (_HID, "BCM2836")
Name (_CID, "MINIUART")
Name (_UID, 0x0)
Name (_CCA, 0x0)
Method (_STA)
{
Return (0xf)
}
Method (_CRS, 0x0, Serialized)
{
Name (RBUF, ResourceTemplate ()
{
MEMORY32FIXED (ReadWrite, 0x3F215000, 0x70,)
Interrupt(ResourceConsumer, Level, ActiveHigh, Shared) {0x3D}
// NTRAID#MSFT-7141401-2016/04/7-jordanrh - disable UART muxing
// until a proper solution can be created for the dmap conflict.
// When muxing is enabled, must consider DBG2 table conflict.
// The alternate function resource needs to be reserved when
// the kernel debugger is enabled to prevent another client
// from muxing the pins away.
//
// MsftFunctionConfig is encoded as the VendorLong.
//
// MsftFunctionConfig(Exclusive, PullDown, BCM_ALT5, "\\_SB.GPI0", 0, ResourceConsumer, ) {14, 15}
// VendorLong () // Length = 0x31
// {
// /* 0000 */ 0x00, 0x60, 0x44, 0xD5, 0xF3, 0x1F, 0x11, 0x60, // .`D....`
// /* 0008 */ 0x4A, 0xB8, 0xB0, 0x9C, 0x2D, 0x23, 0x30, 0xDD, // J...-#0.
// /* 0010 */ 0x2F, 0x8D, 0x1D, 0x00, 0x01, 0x10, 0x00, 0x02, // /.......
// /* 0018 */ 0x02, 0x00, 0x12, 0x00, 0x00, 0x16, 0x00, 0x20, // .......
// /* 0020 */ 0x00, 0x00, 0x00, 0x0E, 0x00, 0x0F, 0x00, 0x5C, // .......\
// /* 0028 */ 0x5F, 0x53, 0x42, 0x2E, 0x47, 0x50, 0x49, 0x30, // _SB.GPI0
// /* 0030 */ 0x00 // .
//}
})
Return (RBUF)
}
}
//
// Multifunction serial bus device to support Bluetooth function.
//
Device(BTH0)
{
Name (_HID, "BCM2EA6")
Name (_CID, "BCM2EA6")
Method (_STA)
{
Return (0xf)
}
Method (_CRS, 0x0, Serialized)
{
Name (RBUF, ResourceTemplate ()
{
// BT UART: UART0 (PL011)
UARTSerialBus(
115200, // InitialBaudRate: in BPS
, // BitsPerByte: default to 8 bits
, // StopBits: Defaults to one bit
0x00, // LinesInUse: 8 1-bit flags to
// declare enabled control lines.
// Raspberry Pi does not exposed
// HW control signals -> not supported.
// Optional bits:
// - Bit 7 (0x80) Request To Send (RTS)
// - Bit 6 (0x40) Clear To Send (CTS)
// - Bit 5 (0x20) Data Terminal Ready (DTR)
// - Bit 4 (0x10) Data Set Ready (DSR)
// - Bit 3 (0x08) Ring Indicator (RI)
// - Bit 2 (0x04) Data Carrier Detect (DTD)
// - Bit 1 (0x02) Reserved. Must be 0.
// - Bit 0 (0x01) Reserved. Must be 0.
, // IsBigEndian:
// default to LittleEndian.
, // Parity: Defaults to no parity
, // FlowControl: Defaults to
// no flow control.
16, // ReceiveBufferSize
16, // TransmitBufferSize
"\\_SB.URT0", // ResourceSource:
// UART bus controller name
, // ResourceSourceIndex: assumed to be 0
, // ResourceUsage: assumed to be
// ResourceConsumer
UAR0, // DescriptorName: creates name
// for offset of resource descriptor
) // Vendor data
//
// RPIQ connection for BT_ON/OFF
//
GpioIO (Shared, PullUp, 0, 0, IoRestrictionNone, "\\_SB.RPIQ", 0, ResourceConsumer, , ) { 128 }
})
Return (RBUF)
}
}
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