AM642 StarterKit (SK) board is a low cost, small form factor board
designed for TI’s AM642 SoC. It supports the following interfaces:
* 2 GB LPDDR4 RAM
* x2 Gigabit Ethernet interfaces capable of working in switch and MAC mode
* x1 USB 3.0 Type-A port
* x1 UHS-1 capable µSD card slot
* 2.4/5 GHz WLAN + Bluetooth 4.2 through WL1837
* 512 Mbit OSPI flash
* x2 UART through UART-USB bridge
* XDS110 for onboard JTAG debug using USB
* Temperature sensors, user push buttons and LEDs
* 40-pin Raspberry Pi compatible GPIO header
* 24-pin header for peripherals in MCU island (I2C, UART, SPI, IO)
* 54-pin header for Programmable Realtime Unit (PRU) IO pins
* Interface for remote automation. Includes:
* power measurement and reset control
* boot mode change
Add basic support for AM642 SK.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Now that single defconfig can be used for booting AM64 EVM and SK,
default device tree will not work for selecting dtb for kernel.
Update the env to select right dtb based on eeprom.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Current BSS allocation of SPL is as below:
size spl/u-boot-spl
text data bss dec hex filename
144572 5484 1752 151808 25100 spl/u-boot-spl
But 20KB is allocated currently for BSS. Reduce it to 4KB and
save some space for stack.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Enable support for selecting DTB within SPL based on EEPROM.
This will help to use single defconfig for both EVM and SK
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
I2C EEPROM data contains the board name and its revision.
Add support for:
- Reading EEPROM data and store a copy at end of SRAM
- Updating env variable with relevant board info
- Printing board info during boot.
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
In SPL, DDR should be made available by the end of board_init_f()
so that apis in board_init_r() can use ddr. Adding support for
triggering DDR initialization from board_init_f().
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Introduce ddr node for am642 needed for all ddr configurations.
Also, introduce the 1600MTs DDR4 configuration that is supported on the
am642-evm.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Attempt to get and enable a vtt regulator if one is provided from the
dts. If we do not find one, continue as not all platforms have this.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Introduce support for the AM64 DDRSS controller which uses the 16bit
variation of the controller. This controller shares much functionality
with the existing J721e support, so this patch introduces only the new
code needed for am64 specific support from "_16bit_" files with headers
under "16bit/" include path/.
Also add a CONFIG_K3_AM64_DDRSS option to the choice required for use
with CONFIG_K3_DDRSS to allow selecting AM64 support.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Introduce a new version of the ddr driver which has the ability to
support different variations of the controller. Also introduce support
for the 32bit variation of the controller which is what was already
supported by the previous version used for J721e and J7200.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Create a new CONFIG_K3_DDRSS option to select the common parts of the
k3-ddrss driver. Also introduce a choice that depends on the top level
option to select CONFIG_K3_J721E_DDRSS for j721e support, and update
corresponding Kconfig as required.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Rename the k3-j721e folder under drivers/ram to k3-ddrss in preparation
of introducing additional support for other platforms to the same
driver.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Fix the indentation for certain macros to be consistent with the other
macros in the file, as the existing indentation does not make sense in
many places.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 EValuation Module (EVM) is a board that provides access to
various peripherals available on the AM642 SoC, such as PCIe, USB 2.0,
CPSW Ethernet, ADC, and more.
Add basic support.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 SoC belongs to the K3 Multicore SoC architecture platform,
providing advanced system integration to enable applications such as
Motor Drives, PLC, Remote IO and IoT Gateways.
Some highlights of this SoC are:
* Dual Cortex-A53s in a single cluster, two clusters of dual Cortex-R5F
MCUs, and a single Cortex-M4F.
* Two Gigabit Industrial Communication Subsystems (ICSSG).
* Integrated Ethernet switch supporting up to a total of two external
ports.
* PCIe-GEN2x1L, USB3/USB2, 2xCAN-FD, eMMC and SD, UFS, OSPI memory
controller, QSPI, I2C, eCAP/eQEP, ePWM, ADC, among other
peripherals.
* Centralized System Controller for Security, Power, and Resource
Management (DMSC).
See AM64X Technical Reference Manual (SPRUIM2, Nov 2020)
for further details: https://www.ti.com/lit/pdf/spruim2
Introduce basic support for the AM642 SoC to enable SD/MMC boot.
Introduce a limited set of MAIN domain peripherals under cbass_main and
a set of MCU domain peripherals under cbass_mcu.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Add pinctrl macros for AM64 SoC. These macro definitions are similar to
that of previous platforms, but adding new definitions to avoid any
naming confusions in the soc dts files.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
AM64x uses a different thread mapping that existing K3 SoCs, so update
the valid thread ID list to include those used for AM64x.
Also remove the comment identifying the purpose of each thread ID. The
purpose of the thread ID is specified when describing the threads in the
device tree and the same ID can mean different things on different SoCs,
so the comment is not useful.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Add support for the controller present on the AM642 SoC.
There are instances:
sdhci0: 8bit bus width, max 400 MBps
sdhci1: 4bit bus width, max 100 MBps
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Change the memory attributes for the DDR regions used by the remote
processors on AM65x so that the cores can see and execute the proper code.
A separate table based on the previous K3 SoCs is introduced since the
number of remote processors and their DDR usage is different between the
SoC families.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 SoCs use the Main R5FSS0 as a boot processor, and runs
the R5 SPL that performs the initialization of the System Controller
processor and starting the Arm Trusted Firmware (ATF) on the Arm
Cortex A53 cluster. The Core0 serves as this boot processor and is
parked in WFE after all the initialization. Core1 does not directly
participate in the boot flow, and is simply parked in a WFI.
Power down these R5 cores (and the associated RTI timer resources
that were indirectly powered up) after starting up ATF on A53 by
using the appropriate SYSFW API in release_resources_for_core_shutdown().
This allows these Main R5F cores to be further controlled from the
A53 to run regular applications.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Use the System Firmware (SYSFW) loader framework to load and start
the SYSFW as part of the AM642 early initialization sequence. Also
make use of existing logic to detect if ROM has already loaded sysfw
and avoided attempting to reload and instead just prepare to use already
running firmware.
While at it also initialize the MAIN_UART1 pinmux as it is used by SYSFW
to print diagnostic messages.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
For AM642, ROM supports loading system firmware directly
from boot image. ROM passes information about the number of
images that are loaded to bootloader at a specific address
that is temporary. Add support for storing this information
somewhere permanent before it gets corrupted.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
To access various control MMR functionality the registers need to
be unlocked. Do that for all control MMR regions in the MAIN domain.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
AM642 allows for booting from primary or backup boot media.
Both media can be chosen individually based on switch settings.
ROM looks for a valid image in primary boot media, if not found
then looks in backup boot media. In order to pass this boot media
information to boot loader, ROM stores a value at a particular
address. Add support for reading this information and determining
the boot media correctly.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
The AM642 SoC belongs to the K3 Multicore SoC architecture platform,
providing advanced system integration to enable applications such as
Motor Drives, PLC, Remote IO and IoT Gateways.
Some highlights of this SoC are:
* Dual Cortex-A53s in a single cluster, two clusters of dual Cortex-R5F
MCUs, and a single Cortex-M4F.
* Two Gigabit Industrial Communication Subsystems (ICSSG).
* Integrated Ethernet switch supporting up to a total of two external
ports.
* PCIe-GEN2x1L, USB3/USB2, 2xCAN-FD, eMMC and SD, UFS, OSPI memory
controller, QSPI, I2C, eCAP/eQEP, ePWM, ADC, among other
peripherals.
* Centralized System Controller for Security, Power, and Resource
Management (DMSC).
See AM64X Technical Reference Manual (SPRUIM2, Nov 2020)
for further details: https://www.ti.com/lit/pdf/spruim2
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
