doc: board: phytec: Add phyCORE-AM64x

Add documentation for PHYTEC phyCORE-AM64x SoM.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Dhruva Gole <d-gole@ti.com>

doc/board/phytec/index.rst

@@ -9,5 +9,6 @@ PHYTEC
    imx8mm-phygate-tauri-l
    imx93-phyboard-segin
    phycore-am62x
+   phycore-am64x
    phycore-imx8mm
    phycore-imx8mp

doc/board/phytec/phycore-am64x.rst

@@ -0,0 +1,159 @@
+.. SPDX-License-Identifier: GPL-2.0+
+.. sectionauthor:: Wadim Egorov <w.egorov@phytec.de>
+
+phyCORE-AM64x
+=============
+
+The `phyCORE-AM64x <https://www.phytec.com/product/phycore-am64x>`_ is a
+SoM (System on Module) featuring TI's AM64x SoC. It can be used in combination
+with different carrier boards. This module can come with different sizes and
+models for DDR, eMMC, SPI NOR Flash and various SoCs from the AM64x family.
+
+A development Kit, called `phyBOARD-Lyra <https://www.phytec.com/product/phyboard-am64x>`_
+is used as a carrier board reference design around the AM64x SoM.
+
+Quickstart
+----------
+
+* Download sources and TI firmware blobs
+* Build Trusted Firmware-A
+* Build OP-TEE
+* Build U-Boot for the R5
+* Build U-Boot for the A53
+* Create bootable uSD Card
+* Boot
+
+Sources
+-------
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_boot_sources
+    :end-before: .. k3_rst_include_end_boot_sources
+
+Build procedure
+---------------
+
+Setup the environment variables:
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_desc
+    :end-before: .. k3_rst_include_end_common_env_vars_desc
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_board_env_vars_desc
+    :end-before: .. k3_rst_include_end_board_env_vars_desc
+
+Set the variables corresponding to this platform:
+
+.. include::  ../ti/k3.rst
+    :start-after: .. k3_rst_include_start_common_env_vars_defn
+    :end-before: .. k3_rst_include_end_common_env_vars_defn
+.. code-block:: bash
+
+ $ export UBOOT_CFG_CORTEXR=phycore_am64x_r5_defconfig
+ $ export UBOOT_CFG_CORTEXA=phycore_am64x_a53_defconfig
+ $ export TFA_BOARD=lite
+ $ # we don't use any extra TFA parameters
+ $ unset TFA_EXTRA_ARGS
+ $ export OPTEE_PLATFORM=k3-am64x
+ # we don't use any extra OPTEE parameters
+ unset OPTEE_EXTRA_ARGS
+
+.. include::  ../ti/am62x_sk.rst
+    :start-after: .. am62x_evm_rst_include_start_build_steps
+    :end-before: .. am62x_evm_rst_include_end_build_steps
+
+uSD Card creation
+-----------------
+
+Use fdisk to partition the uSD card. The layout should look similar to:
+
+.. code-block:: bash
+
+ $ sudo fdisk -l /dev/mmcblk0
+ Disk /dev/mmcblk0: 7.56 GiB, 8120172544 bytes, 15859712 sectors
+ Units: sectors of 1 * 512 = 512 bytes
+ Sector size (logical/physical): 512 bytes / 512 bytes
+ I/O size (minimum/optimal): 512 bytes / 512 bytes
+ Disklabel type: dos
+ Disk identifier: 0x6583d9a3
+
+ Device         Boot  Start     End Sectors   Size Id Type
+ /dev/mmcblk0p1 *      2048  264191  262144   128M  c W95 FAT32 (LBA)
+ /dev/mmcblk0p2      264192 1934953 1670762 815.8M 83 Linux
+
+
+Once partitioned, the boot partition has to be formatted with a FAT filesystem.
+Assuming the uSD card is `/dev/mmcblk0`:
+
+.. code-block:: bash
+
+ $ mkfs.vfat /dev/mmcblk0p1
+
+To boot from a micro SD card on a HSFS device simply copy the following
+artifacts to the FAT partition:
+
+* tiboot3.bin from R5 build
+* tispl.bin from Cortex-A build
+* u-boot.img from Cortex-A build
+
+Boot
+----
+
+Put the uSD card in the slot on the board and apply power. Check the serial
+console for output.
+
+Flash to SPI NOR
+----------------
+
+Below commands can be used to flash the SPI NOR flash; assuming
+tiboot3.bin, tispl.bin and u-boot.img are stored on the uSD card.
+
+.. code-block:: bash
+
+  sf probe
+  fatload mmc 1 ${loadaddr} tiboot3.bin
+  sf update $loadaddr 0x0 $filesize
+  fatload mmc 1 ${loadaddr} tispl.bin
+  sf update $loadaddr 0x80000 $filesize
+  fatload mmc 1 ${loadaddr} u-boot.img
+  sf update $loadaddr 0x280000 $filesize
+
+
+Boot Modes
+----------
+
+The phyCORE-AM64x development kit supports booting from many different
+interfaces. By default, the development kit is set to boot from the micro-SD
+card. To change the boot device, DIP switches S5 and S6 can be used.
+Boot switches should be changed with power off.
+
+.. list-table:: Boot Modes
+   :widths: 16 16 16
+   :header-rows: 1
+
+   * - Switch Label
+     - SW3: 12345678
+     - SW4: 12345678
+
+   * - uSD
+     - 11000010
+     - 01000000
+
+   * - eMMC
+     - 11010010
+     - 00000000
+
+   * - OSPI
+     - 11010000
+     - 10000000
+
+   * - UART
+     - 11011100
+     - 00000000
+
+Further Information
+-------------------
+
+Please see :doc:`../ti/am64x_evm` chapter for further AM64 SoC related documentation
+and https://docs.phytec.com/phycore-am64x for vendor documentation.