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/* SPDX-License-Identifier: GPL-2.0-only */
#include <soc/pcr_ids.h>
#define R_SCS_CFG_PCS 0x84
#define R_SCS_CFG_PG_CONFIG 0xA2
#define PID_UFSX2 0x50
#define R_SCS_PCR_1C20 0x1C20
#define R_SCS_PCR_4820 0x4820
#define R_SCS_PCR_4020 0x4020
#define R_SCS_PCR_5820 0x5820
#define R_SCS_PCR_5C20 0x5C20
#define R_SCS_PCR_1078 0x1078
#define R_PMC_PWRM_LTR_IGN 0x1B0C
External(PCRA, MethodObj)
Scope (\_SB.PCI0)
{
Device (UFS)
{
Name (_ADR, 0x0000000000120007) // _ADR: Address
Name (_DDN, "UFS Controller") // _DDN: DOS Device Name
Name (_DSD, Package (0x02) // _DSD: Device-Specific Data
{
ToUUID ("daffd814-6eba-4d8c-8a91-bc9bbf4aa301") /* Device Properties for _DSD */,
Package (0x01)
{
Package (0x02)
{
"ref-clk-freq",
CONFIG_SOC_INTEL_UFS_CLK_FREQ_HZ
}
}
})
Method (OCPD, 0, Serialized)
{
/*
* OCP Timer need to be disabled in SCS UFS IOSF Bridge to work around
* the Silicon Issue due to which LTR mechanism doest work Registers
* from the UFS OCP Fabric Register space that need to be programmed
* for the timeout are
* Upstream Initiator Port -- offset 0x4020
* Downstream Target Port -- offset 0x4820
* Downstream Target port at Controller -- offset 0x5c20
* Upstream Initiator port at Controller -- offset 0x5820
* Control over interconnect-wide functions -- offset 0x1078
*/
PCRA (PID_UFSX2, R_SCS_PCR_4020, 0x0)
PCRA (PID_UFSX2, R_SCS_PCR_4820, 0x0)
PCRA (PID_UFSX2, R_SCS_PCR_5C20, 0x0)
PCRA (PID_UFSX2, R_SCS_PCR_5820, 0x0)
PCRA (PID_UFSX2, R_SCS_PCR_1078, 0x0)
}
/* Memory Region to access to the UFS PCI Configuration Space */
OperationRegion(SCSR, PCI_Config, 0x00, 0x100)
Field (SCSR, ByteAcc, NoLock, Preserve)
{
Offset(R_SCS_CFG_PCS), /* 0x84, PMCSR - Power Management Control and Status*/
PSTA,32,
Offset(R_SCS_CFG_PG_CONFIG),/* 0xA2, Device PG config */
, 2,
PGEN, 1 /* [BIT2] PGE - PG Enable */
}
Method (_PS0, 0, Serialized)
{
Store(0, PGEN) /* Disable PG */
And(PSTA, 0xFFFFFFFC, PSTA) /* Set BIT[1:0] = 00b - Power State D0 */
/* Disable OCP Timer in SCS UFS IOSF Bridge */
OCPD ()
}
Method (_PS3, 0, Serialized)
{
Store(1, PGEN) /* Enable PG */
}
Method (_INI)
{
OCPD ()
}
}
}
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