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Helios64: update uBoot to v2026-01-rc5
 - Switched to the binman-atf-mainline scenario with the same rkbin DDR blob rk3399_ddr_933MHz_v1.25.bin (TPL blob, as in the old working loader). DRAM init is correct, full 4 GB visible, Linux boots. - U-Boot and DTS updated to v2026.01-rc5. Added MDIO/PHY node and phy-handle in rk3399-kobol- helios64.dts, fixing “mdio node is missing”. Disabled i2s2 in the U-Boot DT to avoid rockchip- i2s ... Could not register PCM. - boot_targets in U-Boot config shortened (mmc1, scsi0, usb0, pxe, dhcp) to avoid env_buf ... too small; however, the last built binary still shows the warning (needs rebuild with the shortened list or enlarging the buffer). - Boot flow: bootstd scans SD (mmc0) and eMMC (mmc1); SD boot works even without mmc0 in boot_targets. - Other changes: defconfig has CONFIG_ROCKCHIP_EXTERNAL_TPL=y to use the external DDR blob. Boots.
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‎config/boards/helios64.conf‎

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@@ -4,7 +4,10 @@ BOARD_VENDOR="kobol"
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BOARDFAMILY="rockchip64" # Used to be rk3399
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BOARD_MAINTAINER="prahal"
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BOOTCONFIG="helios64-rk3399_defconfig"
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BOOT_SCENARIO="tpl-blob-atf-mainline"
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BOOTBRANCH="tag:v2026.01-rc5"
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BOOTPATCHDIR="v2026.01/board_helios64"
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BOOT_SCENARIO="binman-atf-mainline"
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DDR_BLOB="rk33/rk3399_ddr_933MHz_v1.25.bin"
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KERNEL_TARGET="current,edge"
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KERNEL_TEST_TARGET="current"
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MODULES="lm75 ledtrig-netdev"

‎patch/u-boot/v2026.01/0000.patching_config.yaml‎

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@@ -1,6 +1,6 @@
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config:
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overlay-directories:
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- { source: "defconfig", target: "configs" } # copies all files in defconfig dir to the configs/ dir in the u-boot source tree
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- { source: "dt_upstream_rockchip", target: "dts/upstream/src/arm64/rockchip" } # copies all files in dt_upstream_rockchip dir to the dts/upstream/src/arm64/rockchip dir in the u-boot source tree
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- { source: "dt_uboot", target: "arch/arm/dts" } # copies all files in dt_uboot dir to the arch/arm/dts dir in the u-boot source tree
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- { source: "board", target: "board" } # copies board-specific sources (legacy empty dir)

‎patch/u-boot/v2026.01/board_helios64/0000.patching_config.yaml‎

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config:
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# Board-specific overlays live inside this directory to keep Helios64
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# patches self contained.
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overlay-directories:
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- { source: "defconfig", target: "configs" }
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- { source: "dt_upstream_rockchip", target: "dts/upstream/src/arm64/rockchip" }
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- { source: "dt_uboot", target: "arch/arm/dts" }
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- { source: "board", target: "board/kobol/helios64" }

‎patch/u-boot/v2026.01/board_helios64/1001-helios64-enable-target.patch‎

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Codex Bot <bot@example.com>
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Date: Thu, 6 Mar 2025 00:00:00 +0000
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Subject: [PATCH] rk3399: add Helios64 target
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Wire Helios64 into the rk3399 board menu and source tree so its defconfig
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builds again on v2026.01-rc5.
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---
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arch/arm/mach-rockchip/rk3399/Kconfig | 14 ++++++++++++++
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1 file changed, 14 insertions(+)
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diff --git a/arch/arm/mach-rockchip/rk3399/Kconfig b/arch/arm/mach-rockchip/rk3399/Kconfig
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index 39e5b0548d..2b5e169acd 100644
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--- a/arch/arm/mach-rockchip/rk3399/Kconfig
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+++ b/arch/arm/mach-rockchip/rk3399/Kconfig
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@@ -130,6 +130,13 @@
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* wide voltage input(5V-15V), dual cell battery
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* Wifi/BT accessible via expansion board M.2
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+config TARGET_HELIOS64
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+ bool "Kobol Helios64"
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+ help
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+ Helios64 is a RK3399-based NAS board with a JMB585 SATA HBA,
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+ USB-C (DP Alt), USB3 hub, dual Ethernet (1G + 2.5G), eMMC and
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+ LPDDR4 memory.
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+
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endchoice
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config ROCKCHIP_BOOT_MODE_REG
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@@ -166,6 +173,7 @@
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source "board/pine64/pinephone-pro-rk3399/Kconfig"
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source "board/pine64/rockpro64_rk3399/Kconfig"
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source "board/radxa/rockpi4-rk3399/Kconfig"
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+source "board/kobol/helios64/Kconfig"
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source "board/rockchip/evb_rk3399/Kconfig"
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source "board/theobroma-systems/puma_rk3399/Kconfig"
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source "board/vamrs/rock960_rk3399/Kconfig"

‎patch/u-boot/v2026.01/board_helios64/board/Kconfig‎

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if TARGET_HELIOS64
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config SYS_BOARD
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default "helios64"
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config SYS_VENDOR
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default "kobol"
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config SYS_CONFIG_NAME
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default "helios64"
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config BOARD_SPECIFIC_OPTIONS # dummy
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def_bool y
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config ENV_SECT_SIZE
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default 0x1000 if ENV_IS_IN_SPI_FLASH
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config ENV_SIZE
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default 0x8000
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config ENV_OFFSET
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default 0x460000 if ENV_IS_IN_SPI_FLASH
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endif

‎patch/u-boot/v2026.01/board_helios64/board/MAINTAINERS‎

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HELIOS64 BOARD
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M: Aditya Prayoga <aditya@kobol.io>
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S: Maintained
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F: board/kobol/helios64/
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F: include/configs/helios64.h
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F: configs/helios64_defconfig

‎patch/u-boot/v2026.01/board_helios64/board/Makefile‎

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# SPDX-License-Identifier: GPL-2.0+
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#
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# Copyright (C) 2020 Aditya Prayoga <aditya@kobol.io>
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obj-y := helios64.o sys_otp.o

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