* [DistroKit] [PATCH 1/1] v8a: Add support for tq-ma93xxca
2025-04-22 8:54 [DistroKit] [PATCH 0/1] Add TQ-STKa93xx board Fabian Pflug
@ 2025-04-22 8:54 ` Fabian Pflug
2025-04-22 9:09 ` Ahmad Fatoum
0 siblings, 1 reply; 7+ messages in thread
From: Fabian Pflug @ 2025-04-22 8:54 UTC (permalink / raw)
To: distrokit; +Cc: Fabian Pflug
A new board, with an IMX93 processor.
- Barebox patch has been send upstream
- magic number ist choosen at reandom
- has been tested on real hardware
Signed-off-by: Fabian Pflug <f.pflug@pengutronix.de>
---
.../barebox-common-defaultenv/init/bootsource | 2 +-
configs/platform-v8a/barebox.config | 25 +++++++---
.../platform-v8a/config/images/imx93.config | 21 +++++++++
configs/platform-v8a/dts/bootstate.dtsi | 21 +++++++++
configs/platform-v8a/kernelconfig | 9 ++--
...ma93xx-add-dummy-supply-to-regulator.patch | 38 +++++++++++++++
.../patches/barebox-2025.03.0/series | 1 +
configs/platform-v8a/platformconfig | 5 +-
.../platforms/image-tq-mba93xxca.in | 10 ++++
configs/platform-v8a/rules/firmware-imx.make | 1 +
.../rules/image-tq-mba93xxca.make | 35 ++++++++++++++
doc/hardware.rst | 1 +
doc/hardware_v8a_tqma93xxca.rst | 47 +++++++++++++++++++
13 files changed, 203 insertions(+), 13 deletions(-)
create mode 100644 configs/platform-v8a/config/images/imx93.config
create mode 100644 configs/platform-v8a/patches/barebox-2025.03.0/0001-ARM-dts-tqma93xx-add-dummy-supply-to-regulator.patch
create mode 100644 configs/platform-v8a/patches/barebox-2025.03.0/series
create mode 100644 configs/platform-v8a/platforms/image-tq-mba93xxca.in
create mode 100644 configs/platform-v8a/rules/image-tq-mba93xxca.make
create mode 100644 doc/hardware_v8a_tqma93xxca.rst
diff --git a/configs/platform-v8a/barebox-common-defaultenv/init/bootsource b/configs/platform-v8a/barebox-common-defaultenv/init/bootsource
index aa1d06d..19a0429 100644
--- a/configs/platform-v8a/barebox-common-defaultenv/init/bootsource
+++ b/configs/platform-v8a/barebox-common-defaultenv/init/bootsource
@@ -10,7 +10,7 @@ if [ "$bootsource" = mmc ]; then
global.boot.default="mmc$bootsource_instance net"
fi
-if of_compatible -k radxa,rock3a tq,imx8mp-tqma8mpql-mba8mpxl; then
+if of_compatible -k radxa,rock3a tq,imx8mp-tqma8mpql-mba8mpxl tq,imx93-tqma9352; then
global.boot.default="bootchooser net"
global bootchooser.state_prefix="state.bootstate"
global bootchooser.targets="system0 system1"
diff --git a/configs/platform-v8a/barebox.config b/configs/platform-v8a/barebox.config
index 7d3794a..1576088 100644
--- a/configs/platform-v8a/barebox.config
+++ b/configs/platform-v8a/barebox.config
@@ -48,6 +48,8 @@ CONFIG_ARCH_IMX8MM=y
CONFIG_ARCH_IMX8MN=y
CONFIG_ARCH_IMX8MP=y
CONFIG_ARCH_IMX8MQ=y
+CONFIG_ARCH_IMX9=y
+CONFIG_ARCH_IMX93=y
#
# i.MX8M boards
@@ -72,7 +74,7 @@ CONFIG_MACH_TQ_MBA8MPXL=y
#
# i.MX93 boards
#
-# CONFIG_MACH_TQMA93XX is not set
+CONFIG_MACH_TQMA93XX=y
# end of i.MX boards
#
@@ -80,7 +82,10 @@ CONFIG_MACH_TQ_MBA8MPXL=y
#
# CONFIG_IMX_IIM is not set
CONFIG_IMX_SAVE_BOOTROM_LOG=y
+CONFIG_HAB=y
+CONFIG_AHAB=y
# CONFIG_HABV4 is not set
+# CONFIG_HAB_CERTS_ENV is not set
# end of i.MX specific settings
#
@@ -138,6 +143,7 @@ CONFIG_BOARD_GENERIC_DT=y
# CONFIG_BOARD_GENERIC_FIT is not set
# end of General architecture-dependent options
+CONFIG_BOARD_TQ=y
CONFIG_CC_IS_GCC=y
CONFIG_GCC_VERSION=140201
CONFIG_CLANG_VERSION=0
@@ -517,6 +523,7 @@ CONFIG_CMD_USB=y
CONFIG_CMD_USBGADGET=y
CONFIG_CMD_WD=y
CONFIG_CMD_WD_DEFAULT_TIMOUT=0
+# CONFIG_CMD_HAB is not set
# end of Hardware manipulation
#
@@ -591,7 +598,7 @@ CONFIG_SERIAL_DEV_BUS=y
CONFIG_DRIVER_SERIAL_IMX=y
CONFIG_DRIVER_SERIAL_NS16550=y
# CONFIG_DRIVER_SERIAL_CADENCE is not set
-# CONFIG_DRIVER_SERIAL_LPUART32 is not set
+CONFIG_DRIVER_SERIAL_LPUART32=y
# CONFIG_SERIAL_SIFIVE is not set
# end of serial drivers
@@ -664,7 +671,7 @@ CONFIG_SPI_MEM=y
CONFIG_DRIVER_SPI_IMX=y
CONFIG_DRIVER_SPI_IMX_2_3=y
# CONFIG_DRIVER_SPI_LITEX_SPIFLASH is not set
-# CONFIG_SPI_NXP_FLEXSPI is not set
+CONFIG_SPI_NXP_FLEXSPI=y
CONFIG_SPI_ROCKCHIP=y
# end of SPI drivers
@@ -675,7 +682,7 @@ CONFIG_I2C=y
#
# CONFIG_I2C_GPIO is not set
CONFIG_I2C_IMX=y
-# CONFIG_I2C_IMX_LPI2C is not set
+CONFIG_I2C_IMX_LPI2C=y
# CONFIG_I2C_DESIGNWARE is not set
# CONFIG_I2C_MV64XXX is not set
CONFIG_I2C_RK3X=y
@@ -748,7 +755,7 @@ CONFIG_USB_DWC3=y
# CONFIG_USB_DWC3_GADGET is not set
CONFIG_USB_DWC3_DUAL_ROLE=y
CONFIG_USB_DWC3_OF_SIMPLE=y
-# CONFIG_USB_EHCI is not set
+CONFIG_USB_EHCI=y
CONFIG_USB_XHCI=y
# CONFIG_USB_ULPI is not set
CONFIG_USB_OTGDEV=y
@@ -908,7 +915,8 @@ CONFIG_GPIO_GENERIC=y
# CONFIG_GPIO_74XX_MMIO is not set
# CONFIG_GPIO_GENERIC_PLATFORM is not set
CONFIG_GPIO_IMX=y
-# CONFIG_GPIO_PCA953X is not set
+CONFIG_GPIO_VF610=y
+CONFIG_GPIO_PCA953X=y
# CONFIG_GPIO_PCF857X is not set
# CONFIG_GPIO_PL061 is not set
CONFIG_GPIO_ROCKCHIP=y
@@ -934,6 +942,7 @@ CONFIG_NVMEM=y
# CONFIG_NVMEM_SNVS_LPGPR is not set
CONFIG_IMX_OCOTP=y
# CONFIG_IMX_OCOTP_WRITE is not set
+# CONFIG_IMX_OCOTP_ELE is not set
# CONFIG_EEPROM_93XX46 is not set
CONFIG_NVMEM_ROCKCHIP_OTP=y
@@ -1064,6 +1073,7 @@ CONFIG_IMX8M_BLK_CTRL=y
#
CONFIG_IMX_DRAM=y
CONFIG_IMX8M_DRAM=y
+CONFIG_IMX9_DRAM=y
# end of i.MX DDR controllers
CONFIG_REBOOT_MODE=y
@@ -1216,6 +1226,7 @@ CONFIG_PBL_STACKPROTECTOR_NONE=y
# Crypto support
#
CONFIG_CRC32=y
+CONFIG_CRC_ITU_T=y
CONFIG_DIGEST=y
CONFIG_HAVE_DIGEST_MD5=y
CONFIG_HAVE_DIGEST_SHA1=y
@@ -1249,6 +1260,7 @@ CONFIG_FIRMWARE_IMX8MM_ATF=y
CONFIG_FIRMWARE_IMX8MN_ATF=y
CONFIG_FIRMWARE_IMX8MP_ATF=y
CONFIG_FIRMWARE_IMX8MQ_ATF=y
+CONFIG_FIRMWARE_IMX93_ATF=y
# end of Firmware files
#
@@ -1256,6 +1268,7 @@ CONFIG_FIRMWARE_IMX8MQ_ATF=y
#
# CONFIG_COMPILE_HOST_TOOLS is not set
CONFIG_ARCH_IMX_USBLOADER=y
+CONFIG_IMX9_IMAGE=y
CONFIG_RK_IMAGE=y
CONFIG_RK_USB_LOADER=y
# end of Host Tools
diff --git a/configs/platform-v8a/config/images/imx93.config b/configs/platform-v8a/config/images/imx93.config
new file mode 100644
index 0000000..bbdb232
--- /dev/null
+++ b/configs/platform-v8a/config/images/imx93.config
@@ -0,0 +1,21 @@
+image @IMAGE@ {
+ hdimage {
+ align = 1M
+ partition-table-type = gpt
+ }
+ partition barebox {
+ image = "@BAREBOX_IMAGE@"
+ offset = 32k
+ in-partition-table = false
+ }
+ partition barebox-state {
+ offset = 3M
+ size = 1M
+ partition-type-uuid = barebox-state
+ }
+ partition root-A {
+ offset = 4M
+ image = "root.ext2"
+ partition-type-uuid = root-arm64
+ }
+}
diff --git a/configs/platform-v8a/dts/bootstate.dtsi b/configs/platform-v8a/dts/bootstate.dtsi
index 1a8fe3f..4d16623 100644
--- a/configs/platform-v8a/dts/bootstate.dtsi
+++ b/configs/platform-v8a/dts/bootstate.dtsi
@@ -40,6 +40,27 @@
#endif
+/** TQ-Systems i.MX93 TQMa93xxLA/TQMa93xxCA on MBa93xxCA starter kit **********/
+#ifdef imx93_tqma9352_mba93xxca_dts
+/ {
+ aliases {
+ state = &state_sd;
+ };
+
+ state_sd: state {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "barebox,state";
+ magic = <0xd46d4d28>;
+ backend = <&usdhc2>; // via GPT Type UUID
+ backend-type = "raw";
+ backend-storage-type = "direct";
+ backend-stridesize = <0x40>;
+ };
+};
+
+#endif
+
/** Generic bootstate node for all platforms **********************************/
/ {
state: state {
diff --git a/configs/platform-v8a/kernelconfig b/configs/platform-v8a/kernelconfig
index 3e226b9..0513e64 100644
--- a/configs/platform-v8a/kernelconfig
+++ b/configs/platform-v8a/kernelconfig
@@ -2313,7 +2313,8 @@ CONFIG_SERIAL_CORE_CONSOLE=y
# CONFIG_SERIAL_XILINX_PS_UART is not set
# CONFIG_SERIAL_ARC is not set
# CONFIG_SERIAL_RP2 is not set
-# CONFIG_SERIAL_FSL_LPUART is not set
+CONFIG_SERIAL_FSL_LPUART=y
+CONFIG_SERIAL_FSL_LPUART_CONSOLE=y
# CONFIG_SERIAL_FSL_LINFLEXUART is not set
# CONFIG_SERIAL_CONEXANT_DIGICOLOR is not set
# CONFIG_SERIAL_SPRD is not set
@@ -2564,7 +2565,7 @@ CONFIG_PINCTRL_IMX8MP=y
CONFIG_PINCTRL_IMX8MQ=y
# CONFIG_PINCTRL_IMX8ULP is not set
# CONFIG_PINCTRL_IMX91 is not set
-# CONFIG_PINCTRL_IMX93 is not set
+CONFIG_PINCTRL_IMX93=y
CONFIG_PINCTRL_MVEBU=y
CONFIG_PINCTRL_ARMADA_AP806=y
CONFIG_PINCTRL_ARMADA_CP110=y
@@ -3986,8 +3987,8 @@ CONFIG_CLK_IMX8MN=y
CONFIG_CLK_IMX8MP=y
CONFIG_CLK_IMX8MQ=y
# CONFIG_CLK_IMX8ULP is not set
-# CONFIG_CLK_IMX93 is not set
-# CONFIG_CLK_IMX95_BLK_CTL is not set
+CONFIG_CLK_IMX93=y
+CONFIG_CLK_IMX95_BLK_CTL=y
CONFIG_ARMADA_AP_CP_HELPER=y
CONFIG_ARMADA_37XX_CLK=y
CONFIG_ARMADA_AP806_SYSCON=y
diff --git a/configs/platform-v8a/patches/barebox-2025.03.0/0001-ARM-dts-tqma93xx-add-dummy-supply-to-regulator.patch b/configs/platform-v8a/patches/barebox-2025.03.0/0001-ARM-dts-tqma93xx-add-dummy-supply-to-regulator.patch
new file mode 100644
index 0000000..11786ad
--- /dev/null
+++ b/configs/platform-v8a/patches/barebox-2025.03.0/0001-ARM-dts-tqma93xx-add-dummy-supply-to-regulator.patch
@@ -0,0 +1,38 @@
+From b46d4de70f4b9b96ee5277037dd79ba2d7f75751 Mon Sep 17 00:00:00 2001
+From: Fabian Pflug <f.pflug@pengutronix.de>
+Date: Thu, 17 Apr 2025 10:35:16 +0200
+Subject: [PATCH] ARM: dts: tqma93xx add dummy supply to regulator
+
+The regulator for the usdhc2 references the BUCK4 as its input.
+The BUCK4 is part of the pca9451, which in turn is not a regulator
+in barebox, so there is a problem during initialisation:
+
+WARNING: imx-esdhc 42860000.mmc@42860000.of: Failed to get 'vmmc' regulator (ignored)
+
+Since the dependency could not be resolved, the reg_usdhc2_vmmc
+regulator is not correctly initialized, leaving the gpio in a floating
+state, which results in the GPIO being low, which in turn disables
+the SD-Card.
+
+Signed-off-by: Fabian Pflug <f.pflug@pengutronix.de>
+---
+ arch/arm/dts/imx93-tqma93xx.dtsi | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/arch/arm/dts/imx93-tqma93xx.dtsi b/arch/arm/dts/imx93-tqma93xx.dtsi
+index 40425e39a7..aafeadc275 100644
+--- a/arch/arm/dts/imx93-tqma93xx.dtsi
++++ b/arch/arm/dts/imx93-tqma93xx.dtsi
+@@ -15,6 +15,9 @@ pca9451a: pmic@25 {
+ reg = <0x25>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pca9451>;
++ regulators {
++ barebox,allow-dummy-supply;
++ };
+ };
+ };
+
+--
+2.39.5
+
diff --git a/configs/platform-v8a/patches/barebox-2025.03.0/series b/configs/platform-v8a/patches/barebox-2025.03.0/series
new file mode 100644
index 0000000..2d4b3ce
--- /dev/null
+++ b/configs/platform-v8a/patches/barebox-2025.03.0/series
@@ -0,0 +1 @@
+0001-ARM-dts-tqma93xx-add-dummy-supply-to-regulator.patch
diff --git a/configs/platform-v8a/platformconfig b/configs/platform-v8a/platformconfig
index fb1019c..fde26da 100644
--- a/configs/platform-v8a/platformconfig
+++ b/configs/platform-v8a/platformconfig
@@ -137,7 +137,7 @@ PTXCONF_KERNEL_IMAGE_RAW=y
PTXCONF_KERNEL_IMAGE="Image"
PTXCONF_KERNEL_DTB=y
PTXCONF_KERNEL_DTS_PATH="${PTXDIST_PLATFORMCONFIG_SUBDIR}/dts:${KERNEL_DIR}/arch/${GENERIC_KERNEL_ARCH}/boot/dts"
-PTXCONF_KERNEL_DTS="armada-3720-community.dts freescale/imx8mm-evk.dts freescale/imx8mn-ddr4-evk.dts freescale/imx8mn-ddr4-evk.dts freescale/imx8mp-evk.dts freescale/imx8mq-evk.dts rockchip/rk3568-rock-3a.dts freescale/imx8mp-tqma8mpql-mba8mpxl.dts"
+PTXCONF_KERNEL_DTS="armada-3720-community.dts freescale/imx8mm-evk.dts freescale/imx8mn-ddr4-evk.dts freescale/imx8mn-ddr4-evk.dts freescale/imx8mp-evk.dts freescale/imx8mq-evk.dts rockchip/rk3568-rock-3a.dts freescale/imx8mp-tqma8mpql-mba8mpxl.dts freescale/imx93-tqma9352-mba93xxca.dts"
# PTXCONF_KERNEL_DTBO is not set
# PTXCONF_KERNEL_CODE_SIGNING is not set
# PTXCONF_KERNEL_ZSTD is not set
@@ -213,7 +213,7 @@ PTXCONF_TF_A_MD5="dea016f3707117c7935a8a26433a1e46 5b90a1c21210702e64234a2beb79f
PTXCONF_TF_A_ARCH_STRING="aarch64"
PTXCONF_TF_A_ARM_ARCH_MAJOR_8=y
PTXCONF_TF_A_ARM_ARCH_MAJOR=8
-PTXCONF_TF_A_PLATFORMS="imx8mq imx8mm imx8mn imx8mp"
+PTXCONF_TF_A_PLATFORMS="imx8mq imx8mm imx8mn imx8mp imx93"
PTXCONF_TF_A_ARM_ARCH_MINOR=0
PTXCONF_TF_A_EXTRA_ARGS="IMX_BOOT_UART_BASE=auto"
PTXCONF_TF_A_ARTIFACTS="bl31.bin"
@@ -291,6 +291,7 @@ PTXCONF_IMAGE_ROOT_TGZ_LABEL=""
# PTXCONF_IMAGE_ROOT_UBI is not set
# PTXCONF_IMAGE_ROOT_UBIFS is not set
PTXCONF_IMAGE_TQ_MBA8MPXL=y
+PTXCONF_IMAGE_TQ_MBA93XXCA=y
#
# ipkg options
diff --git a/configs/platform-v8a/platforms/image-tq-mba93xxca.in b/configs/platform-v8a/platforms/image-tq-mba93xxca.in
new file mode 100644
index 0000000..b36e285
--- /dev/null
+++ b/configs/platform-v8a/platforms/image-tq-mba93xxca.in
@@ -0,0 +1,10 @@
+## SECTION=image
+
+config IMAGE_TQ_MBA93XXCA
+ tristate
+ select HOST_GENIMAGE
+ select IMAGE_ROOT_EXT
+ select BAREBOX
+ prompt "Generate images/tq-mba93xxca.img"
+ help
+ Generate a bootable SD card image to deploy on a TQ MBa93xxCA board.
diff --git a/configs/platform-v8a/rules/firmware-imx.make b/configs/platform-v8a/rules/firmware-imx.make
index 1cdc3ee..6b01af3 100644
--- a/configs/platform-v8a/rules/firmware-imx.make
+++ b/configs/platform-v8a/rules/firmware-imx.make
@@ -34,6 +34,7 @@ BAREBOX_INJECT_FILES += imx8mm-bl31.bin:firmware/imx8mm-bl31.bin
BAREBOX_INJECT_FILES += imx8mn-bl31.bin:firmware/imx8mn-bl31.bin
BAREBOX_INJECT_FILES += imx8mp-bl31.bin:firmware/imx8mp-bl31.bin
BAREBOX_INJECT_FILES += imx8mq-bl31.bin:firmware/imx8mq-bl31.bin
+BAREBOX_INJECT_FILES += imx93-bl31.bin:firmware/imx93-bl31.bin
ifdef PTXCONF_FIRMWARE_IMX_BOOTIMAGE_IMX8
BAREBOX_INJECT_FILES += ddr/synopsys/lpddr4_pmu_train_1d_dmem.bin:firmware/lpddr4_pmu_train_1d_dmem.bin
BAREBOX_INJECT_FILES += ddr/synopsys/lpddr4_pmu_train_1d_imem.bin:firmware/lpddr4_pmu_train_1d_imem.bin
diff --git a/configs/platform-v8a/rules/image-tq-mba93xxca.make b/configs/platform-v8a/rules/image-tq-mba93xxca.make
new file mode 100644
index 0000000..5e6bcd7
--- /dev/null
+++ b/configs/platform-v8a/rules/image-tq-mba93xxca.make
@@ -0,0 +1,35 @@
+# -*-makefile-*-
+#
+# Copyright (C) 2025 by Fabian Pflug <f.pflug@pengutronix.de>
+#
+# For further information about the PTXdist project and license conditions
+# see the README file.
+#
+
+#
+# We provide this package
+#
+IMAGE_PACKAGES-$(PTXCONF_IMAGE_TQ_MBA93XXCA) += image-tq-mba93xxca
+
+#
+# Paths and names
+#
+IMAGE_TQ_MBA93XXCA := image-tq-mba93xxca
+IMAGE_TQ_MBA93XXCA_DIR := $(BUILDDIR)/$(IMAGE_TQ_MBA93XXCA)
+IMAGE_TQ_MBA93XXCA_IMAGE := $(IMAGEDIR)/tq-mba93xxca.img
+IMAGE_TQ_MBA93XXCA_FILES := $(IMAGEDIR)/root.tgz
+IMAGE_TQ_MBA93XXCA_CONFIG := imx93.config
+
+# ----------------------------------------------------------------------------
+# Image
+# ----------------------------------------------------------------------------
+
+IMAGE_TQ_MBA93XXCA_ENV := \
+ BAREBOX_IMAGE=barebox-tqma93xx.img
+
+$(IMAGE_TQ_MBA93XXCA_IMAGE):
+ @$(call targetinfo)
+ @$(call image/genimage, IMAGE_TQ_MBA93XXCA)
+ @$(call finish)
+
+# vim: syntax=make
diff --git a/doc/hardware.rst b/doc/hardware.rst
index 5c9a0df..ccec2b4 100644
--- a/doc/hardware.rst
+++ b/doc/hardware.rst
@@ -131,6 +131,7 @@ Currently, DistroKit supports the following hardware:
hardware_v8a_espressobin
hardware_v8a_rock3a
+ hardware_v8a_tqma93xxca
rpi1 Platform
diff --git a/doc/hardware_v8a_tqma93xxca.rst b/doc/hardware_v8a_tqma93xxca.rst
new file mode 100644
index 0000000..93353a6
--- /dev/null
+++ b/doc/hardware_v8a_tqma93xxca.rst
@@ -0,0 +1,47 @@
+TQ-Systems i.MX93 TQMa93xxLA/TQMa93xxCA on MBa93xxCA starter kit
+================================================================
+
+
+Boot Media
+----------
+
+Booting is available via multiple sources (Compare Table 6: Boot configuration i.MX 93 from .
+
+.. csv-table:: Example :rst:dir:`csv-table`
+ :header: "Boot Source", "BOOT_MODE2", "BOOT_MODE1", "BOOT_MODE0"
+
+ "Boot from eFuse", "0", "0", "0"
+ "Serial Downloader (USB1)", "0", "0", "1"
+ "Boot from eMMC 5.1", "0", "1", "0"
+ "Boot from SD 3.0 card", "0", "1", "1"
+ "Boot from FlexSPI Serial NOR", "1", "0", "0"
+
+
+Booting from USB and NFS
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+Write the bootloader ``platform-v8a/images/barebox-tqma93xx.img`` to USB:
+
+.. code-block:: shell
+
+ platform-v8a/sysroot-host/bin/imx-usb-loader platform-v8a/images/barebox-tqma93xx.img
+
+In Barebox, set the default boot location to nfs:
+
+ nv boot.default: nfs://dude06//ptx/work/user/fpg/DistroKit/platform-v8a/root
+
+replace the path to one, where you have compiled your Distrokit
+
+
+Booting via SD-Card
+~~~~~~~~~~~~~~~~~~~
+
+Write the image ``platform-v8a/images/tq-mba93xxca.img`` to a microSD card. Put the
+microSD card into the TQMa93xxCA and boot it.
+
+
+Serial Console
+--------------
+
+The serial boot console is available via the microUSB Connector on the board.
+It brings 4 UARTS, whereas the first is the Serial console used by kernel and bootloader.
--
2.39.5
^ permalink raw reply [flat|nested] 7+ messages in thread