mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-09-25 00:42:21 +00:00
6887f8e00b
NB0 is bridge to SRAM and NB1 is bridge to DDR. To ensure that SRAM transfers are not stalled due to delays during DDR refreshes, SRAM traffic should be higher priority (threadmap=2) than DDR traffic (threadmap=0). This fixup is critical to provide deterministic access latency to MSMC from ICSSG, it applies to all AM65 silicon revisions and is due to incorrect reset values (has no erratum id) and statically setting things up should be done independent of usecases and board. This specific style of Northbridge configuration is specific only to AM65x devices, follow-on K3 devices have different data prioritization schemes (ASEL and the like) and hence the fixup applies purely to AM65x. Without this fix, ICSSG TX lock-ups due to delays in MSMC transfers in case of SR1 devices, on SR2 devices, lockups were not observed so far but high retry rates of ICSSG Ethernet (icssg-eth) and, thus, lower throughput. Signed-off-by: Roger Quadros <rogerq@ti.com> Acked-by: Andrew F. Davis <afd@ti.com> Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by: Benoit Parrot <bparrot@ti.com> [Jan: rebased, dropped used define, extended commit log] Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> [Nishanth: Provide relevant context in the commit message] Signed-off-by: Nishanth Menon<nm@ti.com>
61 lines
2 KiB
C
61 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* K3: AM6 SoC definitions, structures etc.
|
|
*
|
|
* (C) Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
|
|
*/
|
|
#ifndef __ASM_ARCH_AM6_HARDWARE_H
|
|
#define __ASM_ARCH_AM6_HARDWARE_H
|
|
|
|
#include <config.h>
|
|
#ifndef __ASSEMBLY__
|
|
#include <linux/bitops.h>
|
|
#endif
|
|
|
|
#define CTRL_MMR0_BASE 0x00100000
|
|
#define CTRLMMR_MAIN_DEVSTAT (CTRL_MMR0_BASE + 0x30)
|
|
|
|
#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_MASK GENMASK(3, 0)
|
|
#define CTRLMMR_MAIN_DEVSTAT_BOOTMODE_SHIFT 0
|
|
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_MASK GENMASK(6, 4)
|
|
#define CTRLMMR_MAIN_DEVSTAT_BKUP_BOOTMODE_SHIFT 4
|
|
#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_MASK GENMASK(12, 12)
|
|
#define CTRLMMR_MAIN_DEVSTAT_MMC_PORT_SHIFT 12
|
|
#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_MASK GENMASK(14, 14)
|
|
#define CTRLMMR_MAIN_DEVSTAT_EMMC_PORT_SHIFT 14
|
|
#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_MASK GENMASK(17, 17)
|
|
#define CTRLMMR_MAIN_DEVSTAT_BKUP_MMC_PORT_SHIFT 12
|
|
#define CTRLMMR_MAIN_DEVSTAT_USB_MODE_SHIFT 9
|
|
#define CTRLMMR_MAIN_DEVSTAT_USB_MODE_MASK GENMASK(10, 9)
|
|
|
|
#define WKUP_CTRL_MMR0_BASE 0x43000000
|
|
#define MCU_CTRL_MMR0_BASE 0x40f00000
|
|
|
|
/*
|
|
* The CTRL_MMR0 memory space is divided into several equally-spaced
|
|
* partitions, so defining the partition size allows us to determine
|
|
* register addresses common to those partitions.
|
|
*/
|
|
#define CTRL_MMR0_PARTITION_SIZE 0x4000
|
|
|
|
/*
|
|
* CTRL_MMR0, WKUP_CTRL_MMR0, and MCU_CTR_MMR0 lock/kick-mechanism
|
|
* shared register definitions.
|
|
*/
|
|
#define CTRLMMR_LOCK_KICK0 0x01008
|
|
#define CTRLMMR_LOCK_KICK0_UNLOCK_VAL 0x68ef3490
|
|
#define CTRLMMR_LOCK_KICK0_UNLOCKED_MASK BIT(0)
|
|
#define CTRLMMR_LOCK_KICK0_UNLOCKED_SHIFT 0
|
|
#define CTRLMMR_LOCK_KICK1 0x0100c
|
|
#define CTRLMMR_LOCK_KICK1_UNLOCK_VAL 0xd172bc5a
|
|
|
|
/* MCU SCRATCHPAD usage */
|
|
#define TI_SRAM_SCRATCH_BOARD_EEPROM_START CONFIG_SYS_K3_MCU_SCRATCHPAD_BASE
|
|
|
|
/* NAVSS Northbridge config */
|
|
#define NAVSS0_NBSS_NB0_CFG_BASE 0x03802000
|
|
#define NAVSS0_NBSS_NB1_CFG_BASE 0x03803000
|
|
|
|
#define NAVSS_NBSS_THREADMAP 0x10
|
|
|
|
#endif /* __ASM_ARCH_AM6_HARDWARE_H */
|