diff mbox series

[v2,5/9] board: qualcomm: Add support for dragonboard845c

Message ID 20220708131404.1489347-6-sumit.garg@linaro.org
State Superseded
Headers show
Series New boards support: db845c and qcs404-evb | expand

Commit Message

Sumit Garg July 8, 2022, 1:14 p.m. UTC 
Add support for 96Boards Dragonboard 845C aka Robotics RB3 development
platform. This board complies with 96Boards Open Platform Specifications.

Features:
- Qualcomm Snapdragon SDA845 SoC
- 4GiB RAM
- 64GiB UFS drive

U-boot is chain loaded by ABL in 64-bit mode as part of boot.img.
For detailed build and boot instructions, refer to
doc/board/qualcomm/sdm845.rst, board: dragonboard845c.

Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
---
 arch/arm/dts/dragonboard845c-uboot.dtsi       |  37 +++++++
 arch/arm/dts/dragonboard845c.dts              |  44 ++++++++
 arch/arm/mach-snapdragon/Kconfig              |  14 +++
 board/qualcomm/dragonboard845c/Kconfig        |  12 +++
 board/qualcomm/dragonboard845c/MAINTAINERS    |   6 ++
 board/qualcomm/dragonboard845c/Makefile       |   9 ++
 board/qualcomm/dragonboard845c/db845c.its     |  63 +++++++++++
 .../dragonboard845c/dragonboard845c.c         |   9 ++
 configs/dragonboard845c_defconfig             |  28 +++++
 doc/board/qualcomm/sdm845.rst                 | 100 +++++++++++++++---
 include/configs/dragonboard845c.h             |  28 +++++
 11 files changed, 337 insertions(+), 13 deletions(-)
 create mode 100644 arch/arm/dts/dragonboard845c-uboot.dtsi
 create mode 100644 arch/arm/dts/dragonboard845c.dts
 create mode 100644 board/qualcomm/dragonboard845c/Kconfig
 create mode 100644 board/qualcomm/dragonboard845c/MAINTAINERS
 create mode 100644 board/qualcomm/dragonboard845c/Makefile
 create mode 100644 board/qualcomm/dragonboard845c/db845c.its
 create mode 100644 board/qualcomm/dragonboard845c/dragonboard845c.c
 create mode 100644 configs/dragonboard845c_defconfig
 create mode 100644 include/configs/dragonboard845c.h

Comments

Ramon Fried July 11, 2022, 2:34 p.m. UTC | #1 
On Fri, Jul 8, 2022 at 4:14 PM Sumit Garg <sumit.garg@linaro.org> wrote:
>
> Add support for 96Boards Dragonboard 845C aka Robotics RB3 development
> platform. This board complies with 96Boards Open Platform Specifications.
>
> Features:
> - Qualcomm Snapdragon SDA845 SoC
> - 4GiB RAM
> - 64GiB UFS drive
>
> U-boot is chain loaded by ABL in 64-bit mode as part of boot.img.
> For detailed build and boot instructions, refer to
> doc/board/qualcomm/sdm845.rst, board: dragonboard845c.
>
> Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
> ---
>  arch/arm/dts/dragonboard845c-uboot.dtsi       |  37 +++++++
>  arch/arm/dts/dragonboard845c.dts              |  44 ++++++++
>  arch/arm/mach-snapdragon/Kconfig              |  14 +++
>  board/qualcomm/dragonboard845c/Kconfig        |  12 +++
>  board/qualcomm/dragonboard845c/MAINTAINERS    |   6 ++
>  board/qualcomm/dragonboard845c/Makefile       |   9 ++
>  board/qualcomm/dragonboard845c/db845c.its     |  63 +++++++++++
>  .../dragonboard845c/dragonboard845c.c         |   9 ++
>  configs/dragonboard845c_defconfig             |  28 +++++
>  doc/board/qualcomm/sdm845.rst                 | 100 +++++++++++++++---
>  include/configs/dragonboard845c.h             |  28 +++++
>  11 files changed, 337 insertions(+), 13 deletions(-)
>  create mode 100644 arch/arm/dts/dragonboard845c-uboot.dtsi
>  create mode 100644 arch/arm/dts/dragonboard845c.dts
>  create mode 100644 board/qualcomm/dragonboard845c/Kconfig
>  create mode 100644 board/qualcomm/dragonboard845c/MAINTAINERS
>  create mode 100644 board/qualcomm/dragonboard845c/Makefile
>  create mode 100644 board/qualcomm/dragonboard845c/db845c.its
>  create mode 100644 board/qualcomm/dragonboard845c/dragonboard845c.c
>  create mode 100644 configs/dragonboard845c_defconfig
>  create mode 100644 include/configs/dragonboard845c.h
>
> diff --git a/arch/arm/dts/dragonboard845c-uboot.dtsi b/arch/arm/dts/dragonboard845c-uboot.dtsi
> new file mode 100644
> index 0000000000..8b5a7ee573
> --- /dev/null
> +++ b/arch/arm/dts/dragonboard845c-uboot.dtsi
> @@ -0,0 +1,37 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * U-Boot addition to handle Qualcomm Robotics RB3 Development Platform
> + * (dragonboard845c) pins
> + *
> + * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
> + */
> +
> +/
> +{
> +       soc {
> +               u-boot,dm-pre-reloc;
> +
> +               serial@a84000 {
> +                       u-boot,dm-pre-reloc;
> +               };
> +
> +               clock-controller@100000 {
> +                       u-boot,dm-pre-reloc;
> +               };
> +
> +               pinctrl_north@3900000 {
> +                       u-boot,dm-pre-reloc;
> +               };
> +       };
> +};
> +
> +&pm8998_pon {
> +       key_vol_down {
> +               gpios = <&pm8998_pon 1 0>;
> +               label = "key_vol_down";
> +       };
> +       key_power {
> +               gpios = <&pm8998_pon 0 0>;
> +               label = "key_power";
> +       };
> +};
> diff --git a/arch/arm/dts/dragonboard845c.dts b/arch/arm/dts/dragonboard845c.dts
> new file mode 100644
> index 0000000000..1722dce33f
> --- /dev/null
> +++ b/arch/arm/dts/dragonboard845c.dts
> @@ -0,0 +1,44 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Qualcomm Robotics RB3 Development (dragonboard845c) board device
> + * tree source
> + *
> + * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
> + */
> +
> +/dts-v1/;
> +
> +#include "sdm845.dtsi"
> +
> +/ {
> +       model = "Thundercomm Dragonboard 845c";
> +       compatible = "thundercomm,db845c", "qcom,sdm845";
> +       #address-cells = <2>;
> +       #size-cells = <2>;
> +
> +       chosen {
> +               stdout-path = "serial0:115200n8";
> +       };
> +
> +       aliases {
> +               serial0 = &debug_uart;
> +       };
> +
> +       memory {
> +               device_type = "memory";
> +               reg = <0 0x80000000 0 0xfdfa0000>;
> +       };
> +
> +       psci {
> +               compatible = "arm,psci-1.0";
> +               method = "smc";
> +       };
> +
> +       soc: soc {
> +               serial@a84000 {
> +                       status = "okay";
> +               };
> +       };
> +};
> +
> +#include "dragonboard845c-uboot.dtsi"
> diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
> index 12cf02a56a..cb53dc8901 100644
> --- a/arch/arm/mach-snapdragon/Kconfig
> +++ b/arch/arm/mach-snapdragon/Kconfig
> @@ -44,6 +44,19 @@ config TARGET_DRAGONBOARD820C
>           - 3GiB RAM
>           - 32GiB UFS drive
>
> +config TARGET_DRAGONBOARD845C
> +       bool "96Boards Dragonboard 845C"
> +       help
> +         Support for 96Boards Dragonboard 845C aka Robotics RB3 Development
> +         Platform. This board complies with 96Boards Open Platform
> +         Specifications. Features:
> +         - Qualcomm Snapdragon SDA845 SoC
> +         - 4GiB RAM
> +         - 64GiB UFS drive
> +       select MISC_INIT_R
> +       select SDM845
> +       select DM_ETH if NET
> +
>  config TARGET_STARQLTECHN
>         bool "Samsung S9 SM-G9600(starqltechn)"
>         help
> @@ -60,6 +73,7 @@ endchoice
>
>  source "board/qualcomm/dragonboard410c/Kconfig"
>  source "board/qualcomm/dragonboard820c/Kconfig"
> +source "board/qualcomm/dragonboard845c/Kconfig"
>  source "board/samsung/starqltechn/Kconfig"
>
>  endif
> diff --git a/board/qualcomm/dragonboard845c/Kconfig b/board/qualcomm/dragonboard845c/Kconfig
> new file mode 100644
> index 0000000000..52fdff288d
> --- /dev/null
> +++ b/board/qualcomm/dragonboard845c/Kconfig
> @@ -0,0 +1,12 @@
> +if TARGET_DRAGONBOARD845C
> +
> +config SYS_BOARD
> +       default "dragonboard845c"
> +
> +config SYS_CONFIG_NAME
> +       default "dragonboard845c"
> +
> +config SYS_VENDOR
> +       default "qualcomm"
> +
> +endif
> diff --git a/board/qualcomm/dragonboard845c/MAINTAINERS b/board/qualcomm/dragonboard845c/MAINTAINERS
> new file mode 100644
> index 0000000000..e555953df6
> --- /dev/null
> +++ b/board/qualcomm/dragonboard845c/MAINTAINERS
> @@ -0,0 +1,6 @@
> +Qualcomm Robotics RB3 Development Platform (dragonboard845c)
> +M:     Sumit Garg <sumit.garg@linaro.org>
> +S:     Maintained
> +F:     board/qualcomm/dragonboard845c/
> +F:     include/configs/dragonboard845c.h
> +F:     configs/dragonboard845c_defconfig
> diff --git a/board/qualcomm/dragonboard845c/Makefile b/board/qualcomm/dragonboard845c/Makefile
> new file mode 100644
> index 0000000000..0abefdaf36
> --- /dev/null
> +++ b/board/qualcomm/dragonboard845c/Makefile
> @@ -0,0 +1,9 @@
> +# SPDX-License-Identifier: GPL-2.0+
> +#
> +# (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
> +#
> +# This empty file prevents make error.
> +# Board logic defined in board/qualcomm/common/sdm845.c, no custom logic for dragonboard845c so far.
> +#
> +
> +obj-y += dragonboard845c.o
> diff --git a/board/qualcomm/dragonboard845c/db845c.its b/board/qualcomm/dragonboard845c/db845c.its
> new file mode 100644
> index 0000000000..a2621340d1
> --- /dev/null
> +++ b/board/qualcomm/dragonboard845c/db845c.its
> @@ -0,0 +1,63 @@
> +/*
> + * U-Boot uImage source file with multiple kernels, ramdisks and FDT blobs
> + */
> +
> +/dts-v1/;
> +
> +/ {
> +       description = "Various kernels, ramdisks and FDT blobs";
> +       #address-cells = <1>;
> +
> +       images {
> +               kernel-1 {
> +                       description = "5.15.0-qcomlt-arm64";
> +                       data = /incbin/("./db845c_imgs/Image.gz--5.15-r0-dragonboard-845c-20211218193034-511.bin");
> +                       type = "kernel";
> +                       arch = "arm64";
> +                       os = "linux";
> +                       compression = "gzip";
> +                       load = <0x80000000>;
> +                       entry = <0x80000000>;
> +                       hash-1 {
> +                               algo = "sha1";
> +                       };
> +               };
> +
> +               ramdisk-1 {
> +                       description = "initramfs-test-full-image-dragonboard-845c";
> +                       data = /incbin/("./db845c_imgs/initramfs-test-full-image-dragonboard-845c-20211218193034-511.rootfs.cpio.gz");
> +                       type = "ramdisk";
> +                       arch = "arm64";
> +                       os = "linux";
> +                       compression = "gzip";
> +                       load = <00000000>;
> +                       entry = <00000000>;
> +                       hash-1 {
> +                               algo = "sha1";
> +                       };
> +               };
> +
> +               fdt-1 {
> +                       description = "sdm845-db845c-fdt";
> +                       data = /incbin/("./db845c_imgs/sdm845-db845c--5.15-r0-dragonboard-845c-20211218193034.dtb");
> +                       type = "flat_dt";
> +                       arch = "arm64";
> +                       compression = "none";
> +                       hash-1 {
> +                               algo = "sha1";
> +                       };
> +               };
> +
> +       };
> +
> +       configurations {
> +               default = "config-1";
> +
> +               config-1 {
> +                       description = "db845c kernel-5.15.0 configuration";
> +                       kernel = "kernel-1";
> +                       ramdisk = "ramdisk-1";
> +                       fdt = "fdt-1";
> +               };
> +       };
> +};
> diff --git a/board/qualcomm/dragonboard845c/dragonboard845c.c b/board/qualcomm/dragonboard845c/dragonboard845c.c
> new file mode 100644
> index 0000000000..c7685de306
> --- /dev/null
> +++ b/board/qualcomm/dragonboard845c/dragonboard845c.c
> @@ -0,0 +1,9 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * This empty file prevents make linking error.
> + * No custom logic for dragonboard845c so far.
> + *
> + * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
> + */
> +
> +void noop(void) {}
> diff --git a/configs/dragonboard845c_defconfig b/configs/dragonboard845c_defconfig
> new file mode 100644
> index 0000000000..a19e46a74b
> --- /dev/null
> +++ b/configs/dragonboard845c_defconfig
> @@ -0,0 +1,28 @@
> +CONFIG_ARM=y
> +CONFIG_SKIP_LOWLEVEL_INIT=y
> +CONFIG_COUNTER_FREQUENCY=19000000
> +CONFIG_POSITION_INDEPENDENT=y
> +CONFIG_ARCH_SNAPDRAGON=y
> +CONFIG_DEFAULT_DEVICE_TREE="dragonboard845c"
> +CONFIG_TARGET_DRAGONBOARD845C=y
> +CONFIG_IDENT_STRING="\nQualcomm-DragonBoard 845C"
> +CONFIG_SYS_LOAD_ADDR=0x80000000
> +CONFIG_FIT=y
> +CONFIG_FIT_VERBOSE=y
> +CONFIG_BOOTDELAY=5
> +CONFIG_SAVE_PREV_BL_FDT_ADDR=y
> +CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y
> +# CONFIG_DISPLAY_CPUINFO is not set
> +CONFIG_HUSH_PARSER=y
> +CONFIG_CMD_GPIO=y
> +CONFIG_CMD_BMP=y
> +# CONFIG_NET is not set
> +CONFIG_CLK=y
> +CONFIG_MSM_GPIO=y
> +CONFIG_PM8916_GPIO=y
> +CONFIG_PINCTRL=y
> +CONFIG_DM_PMIC=y
> +CONFIG_PMIC_PM8916=y
> +CONFIG_MSM_GENI_SERIAL=y
> +CONFIG_SPMI_MSM=y
> +CONFIG_LMB_MAX_REGIONS=64
> diff --git a/doc/board/qualcomm/sdm845.rst b/doc/board/qualcomm/sdm845.rst
> index b6642c9579..8ef4749287 100644
> --- a/doc/board/qualcomm/sdm845.rst
> +++ b/doc/board/qualcomm/sdm845.rst
> @@ -35,9 +35,25 @@ Pack android boot image
>  ^^^^^^^^^^^^^^^^^^^^^^^
>  We'll assemble android boot image with ``u-boot.bin`` instead of linux kernel,
>  and FIT image instead of ``initramfs``. Android bootloader expect gzipped kernel
> -with appended dtb, so let's mimic linux to satisfy stock bootloader:
> +with appended dtb, so let's mimic linux to satisfy stock bootloader.
>
> -- create dump dtb::
> +Boards
> +------------
> +starqlte
> +^^^^^^^^^^^^
> +
> +The starqltechn is a production board for Samsung S9 (SM-G9600) phone,
> +based on the Qualcomm SDM845 SoC.
> +
> +Steps:
> +
> +- Build u-boot::
> +
> +       $ export CROSS_COMPILE=<aarch64 toolchain prefix>
> +       $ make starqltechn_defconfig
> +       $ make
> +
> +- Create dump dtb::
>
>         workdir=/tmp/prepare_payload
>         mkdir -p "$workdir"
> @@ -56,10 +72,15 @@ with appended dtb, so let's mimic linux to satisfy stock bootloader:
>         };
>         EOF
>
> -- gzip u-boot ``gzip u-boot.bin``
> -- append dtb to gzipped u-boot: ``cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb``
> +- gzip u-boot::
> +
> +       gzip u-boot.bin
>
> -Now we've got everything to build android boot image:::
> +- Append dtb to gzipped u-boot::
> +
> +       cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb
> +
> +- Now we've got everything to build android boot image::
>
>         mkbootimg --base 0x0 --kernel_offset 0x00008000 \
>         --ramdisk_offset 0x02000000 --tags_offset 0x01e00000 \
> @@ -68,16 +89,69 @@ Now we've got everything to build android boot image:::
>         --kernel u-boot.bin.gz-dtb \
>         -o boot.img
>
> -Flash image with your phone's flashing method.
> +- Flash image with your phone's flashing method.
>
> -Boards
> -------------
> -starqlte
> -^^^^^^^^^^^^
> +More information can be found on the `Samsung S9 page`_.
>
> -The starqltechn is a production board for Samsung S9 (SM-G9600) phone,
> -based on the Qualcomm SDM845 SoC.
> +dragonboard845c
> +^^^^^^^^^^^^^^^
>
> -More information can be found on the `Samsung S9 page`_.
> +The dragonboard845c is a Qualcomm Robotics RB3 Development Platform, based on
> +the Qualcomm SDM845 SoC.
> +
> +Steps:
> +
> +- Build u-boot::
> +
> +       $ export CROSS_COMPILE=<aarch64 toolchain prefix>
> +       $ make dragonboard845c_defconfig
> +       $ make
> +
> +- Create dummy dtb::
> +
> +       workdir=/tmp/prepare_payload
> +       mkdir -p "$workdir"
> +       mock_dtb="$workdir"/payload_mock.dtb
> +
> +       dtc -I dts -O dtb -o "$mock_dtb" << EOF
> +       /dts-v1/;
> +       / {
> +               #address-cells = <2>;
> +               #size-cells = <2>;
> +
> +               memory@80000000 {
> +                       device_type = "memory";
> +                       /* We expect the bootloader to fill in the size */
> +                       reg = <0 0x80000000 0 0>;
> +               };
> +
> +               chosen { };
> +       };
> +       EOF
> +
> +- gzip u-boot::
> +
> +       gzip u-boot.bin
> +
> +- Append dtb to gzipped u-boot::
> +
> +        cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb
> +
> +- A ``db845c.its`` file can be found in ``board/qualcomm/dragonboard845c/``
> +  directory. It expects a folder as ``db845c_imgs/`` in the main directory
> +  containing pre-built kernel, dts and ramdisk images. See ``db845c.its``
> +  for full path to images::
> +
> +       mkimage -f db845c.its db845c.itb
> +
> +- Now we've got everything to build android boot image::
> +
> +       mkbootimg --kernel u-boot.bin.gz-dtb --ramdisk db845c.itb \
> +       --output boot.img --pagesize 4096 --base 0x80000000
> +
> +- Flash boot.img using db845c fastboot method.
> +
> +More information can be found on the `DragonBoard 845c page`_.
>
>  .. _Samsung S9 page: https://en.wikipedia.org/wiki/Samsung_Galaxy_S9
> +.. _DragonBoard 845c page: https://www.96boards.org/product/rb3-platform/
> diff --git a/include/configs/dragonboard845c.h b/include/configs/dragonboard845c.h
> new file mode 100644
> index 0000000000..108dde199b
> --- /dev/null
> +++ b/include/configs/dragonboard845c.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0+ */
> +/*
> + * Configuration file for Dragonboard 845c, based on Qualcomm SDA845 chip
> + *
> + * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
> + */
> +
> +#ifndef __CONFIGS_SDM845_H
> +#define __CONFIGS_SDM845_H
> +
> +#include <linux/sizes.h>
> +#include <asm/arch/sysmap-sdm845.h>
> +
> +#define CONFIG_SYS_BAUDRATE_TABLE      { 115200, 230400, 460800, 921600 }
> +
> +#define CONFIG_EXTRA_ENV_SETTINGS \
> +       "bootm_size=0x5000000\0"        \
> +       "bootm_low=0x80000000\0"        \
> +       "bootcmd=bootm $prevbl_initrd_start_addr\0"
> +
> +/* Size of malloc() pool */
> +#define CONFIG_SYS_BOOTM_LEN   SZ_64M
> +
> +/* Monitor Command Prompt */
> +#define CONFIG_SYS_CBSIZE      512
> +#define CONFIG_SYS_MAXARGS     64
> +
> +#endif
> --
> 2.25.1
>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff mbox series

Patch

diff --git a/arch/arm/dts/dragonboard845c-uboot.dtsi b/arch/arm/dts/dragonboard845c-uboot.dtsi
new file mode 100644
index 0000000000..8b5a7ee573
--- /dev/null
+++ b/arch/arm/dts/dragonboard845c-uboot.dtsi
@@ -0,0 +1,37 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * U-Boot addition to handle Qualcomm Robotics RB3 Development Platform
+ * (dragonboard845c) pins
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
+ */
+
+/
+{
+	soc {
+		u-boot,dm-pre-reloc;
+
+		serial@a84000 {
+			u-boot,dm-pre-reloc;
+		};
+
+		clock-controller@100000 {
+			u-boot,dm-pre-reloc;
+		};
+
+		pinctrl_north@3900000 {
+			u-boot,dm-pre-reloc;
+		};
+	};
+};
+
+&pm8998_pon {
+	key_vol_down {
+		gpios = <&pm8998_pon 1 0>;
+		label = "key_vol_down";
+	};
+	key_power {
+		gpios = <&pm8998_pon 0 0>;
+		label = "key_power";
+	};
+};
diff --git a/arch/arm/dts/dragonboard845c.dts b/arch/arm/dts/dragonboard845c.dts
new file mode 100644
index 0000000000..1722dce33f
--- /dev/null
+++ b/arch/arm/dts/dragonboard845c.dts
@@ -0,0 +1,44 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Qualcomm Robotics RB3 Development (dragonboard845c) board device
+ * tree source
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
+ */
+
+/dts-v1/;
+
+#include "sdm845.dtsi"
+
+/ {
+	model = "Thundercomm Dragonboard 845c";
+	compatible = "thundercomm,db845c", "qcom,sdm845";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	aliases {
+		serial0 = &debug_uart;
+	};
+
+	memory {
+		device_type = "memory";
+		reg = <0 0x80000000 0 0xfdfa0000>;
+	};
+
+	psci {
+		compatible = "arm,psci-1.0";
+		method = "smc";
+	};
+
+	soc: soc {
+		serial@a84000 {
+			status = "okay";
+		};
+	};
+};
+
+#include "dragonboard845c-uboot.dtsi"
diff --git a/arch/arm/mach-snapdragon/Kconfig b/arch/arm/mach-snapdragon/Kconfig
index 12cf02a56a..cb53dc8901 100644
--- a/arch/arm/mach-snapdragon/Kconfig
+++ b/arch/arm/mach-snapdragon/Kconfig
@@ -44,6 +44,19 @@  config TARGET_DRAGONBOARD820C
 	  - 3GiB RAM
 	  - 32GiB UFS drive
 
+config TARGET_DRAGONBOARD845C
+	bool "96Boards Dragonboard 845C"
+	help
+	  Support for 96Boards Dragonboard 845C aka Robotics RB3 Development
+	  Platform. This board complies with 96Boards Open Platform
+	  Specifications. Features:
+	  - Qualcomm Snapdragon SDA845 SoC
+	  - 4GiB RAM
+	  - 64GiB UFS drive
+	select MISC_INIT_R
+	select SDM845
+	select DM_ETH if NET
+
 config TARGET_STARQLTECHN
 	bool "Samsung S9 SM-G9600(starqltechn)"
 	help
@@ -60,6 +73,7 @@  endchoice
 
 source "board/qualcomm/dragonboard410c/Kconfig"
 source "board/qualcomm/dragonboard820c/Kconfig"
+source "board/qualcomm/dragonboard845c/Kconfig"
 source "board/samsung/starqltechn/Kconfig"
 
 endif
diff --git a/board/qualcomm/dragonboard845c/Kconfig b/board/qualcomm/dragonboard845c/Kconfig
new file mode 100644
index 0000000000..52fdff288d
--- /dev/null
+++ b/board/qualcomm/dragonboard845c/Kconfig
@@ -0,0 +1,12 @@ 
+if TARGET_DRAGONBOARD845C
+
+config SYS_BOARD
+	default "dragonboard845c"
+
+config SYS_CONFIG_NAME
+	default "dragonboard845c"
+
+config SYS_VENDOR
+	default "qualcomm"
+
+endif
diff --git a/board/qualcomm/dragonboard845c/MAINTAINERS b/board/qualcomm/dragonboard845c/MAINTAINERS
new file mode 100644
index 0000000000..e555953df6
--- /dev/null
+++ b/board/qualcomm/dragonboard845c/MAINTAINERS
@@ -0,0 +1,6 @@ 
+Qualcomm Robotics RB3 Development Platform (dragonboard845c)
+M:	Sumit Garg <sumit.garg@linaro.org>
+S:	Maintained
+F:	board/qualcomm/dragonboard845c/
+F:	include/configs/dragonboard845c.h
+F:	configs/dragonboard845c_defconfig
diff --git a/board/qualcomm/dragonboard845c/Makefile b/board/qualcomm/dragonboard845c/Makefile
new file mode 100644
index 0000000000..0abefdaf36
--- /dev/null
+++ b/board/qualcomm/dragonboard845c/Makefile
@@ -0,0 +1,9 @@ 
+# SPDX-License-Identifier: GPL-2.0+
+#
+# (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
+#
+# This empty file prevents make error.
+# Board logic defined in board/qualcomm/common/sdm845.c, no custom logic for dragonboard845c so far.
+#
+
+obj-y += dragonboard845c.o
diff --git a/board/qualcomm/dragonboard845c/db845c.its b/board/qualcomm/dragonboard845c/db845c.its
new file mode 100644
index 0000000000..a2621340d1
--- /dev/null
+++ b/board/qualcomm/dragonboard845c/db845c.its
@@ -0,0 +1,63 @@ 
+/*
+ * U-Boot uImage source file with multiple kernels, ramdisks and FDT blobs
+ */
+
+/dts-v1/;
+
+/ {
+	description = "Various kernels, ramdisks and FDT blobs";
+	#address-cells = <1>;
+
+	images {
+		kernel-1 {
+			description = "5.15.0-qcomlt-arm64";
+			data = /incbin/("./db845c_imgs/Image.gz--5.15-r0-dragonboard-845c-20211218193034-511.bin");
+			type = "kernel";
+			arch = "arm64";
+			os = "linux";
+			compression = "gzip";
+			load = <0x80000000>;
+			entry = <0x80000000>;
+			hash-1 {
+				algo = "sha1";
+			};
+		};
+
+		ramdisk-1 {
+			description = "initramfs-test-full-image-dragonboard-845c";
+			data = /incbin/("./db845c_imgs/initramfs-test-full-image-dragonboard-845c-20211218193034-511.rootfs.cpio.gz");
+			type = "ramdisk";
+			arch = "arm64";
+			os = "linux";
+			compression = "gzip";
+			load = <00000000>;
+			entry = <00000000>;
+			hash-1 {
+				algo = "sha1";
+			};
+		};
+
+		fdt-1 {
+			description = "sdm845-db845c-fdt";
+			data = /incbin/("./db845c_imgs/sdm845-db845c--5.15-r0-dragonboard-845c-20211218193034.dtb");
+			type = "flat_dt";
+			arch = "arm64";
+			compression = "none";
+			hash-1 {
+				algo = "sha1";
+			};
+		};
+
+	};
+
+	configurations {
+		default = "config-1";
+
+		config-1 {
+			description = "db845c kernel-5.15.0 configuration";
+			kernel = "kernel-1";
+			ramdisk = "ramdisk-1";
+			fdt = "fdt-1";
+		};
+	};
+};
diff --git a/board/qualcomm/dragonboard845c/dragonboard845c.c b/board/qualcomm/dragonboard845c/dragonboard845c.c
new file mode 100644
index 0000000000..c7685de306
--- /dev/null
+++ b/board/qualcomm/dragonboard845c/dragonboard845c.c
@@ -0,0 +1,9 @@ 
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * This empty file prevents make linking error.
+ * No custom logic for dragonboard845c so far.
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
+ */
+
+void noop(void) {}
diff --git a/configs/dragonboard845c_defconfig b/configs/dragonboard845c_defconfig
new file mode 100644
index 0000000000..a19e46a74b
--- /dev/null
+++ b/configs/dragonboard845c_defconfig
@@ -0,0 +1,28 @@ 
+CONFIG_ARM=y
+CONFIG_SKIP_LOWLEVEL_INIT=y
+CONFIG_COUNTER_FREQUENCY=19000000
+CONFIG_POSITION_INDEPENDENT=y
+CONFIG_ARCH_SNAPDRAGON=y
+CONFIG_DEFAULT_DEVICE_TREE="dragonboard845c"
+CONFIG_TARGET_DRAGONBOARD845C=y
+CONFIG_IDENT_STRING="\nQualcomm-DragonBoard 845C"
+CONFIG_SYS_LOAD_ADDR=0x80000000
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_BOOTDELAY=5
+CONFIG_SAVE_PREV_BL_FDT_ADDR=y
+CONFIG_SAVE_PREV_BL_INITRAMFS_START_ADDR=y
+# CONFIG_DISPLAY_CPUINFO is not set
+CONFIG_HUSH_PARSER=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_BMP=y
+# CONFIG_NET is not set
+CONFIG_CLK=y
+CONFIG_MSM_GPIO=y
+CONFIG_PM8916_GPIO=y
+CONFIG_PINCTRL=y
+CONFIG_DM_PMIC=y
+CONFIG_PMIC_PM8916=y
+CONFIG_MSM_GENI_SERIAL=y
+CONFIG_SPMI_MSM=y
+CONFIG_LMB_MAX_REGIONS=64
diff --git a/doc/board/qualcomm/sdm845.rst b/doc/board/qualcomm/sdm845.rst
index b6642c9579..8ef4749287 100644
--- a/doc/board/qualcomm/sdm845.rst
+++ b/doc/board/qualcomm/sdm845.rst
@@ -35,9 +35,25 @@  Pack android boot image
 ^^^^^^^^^^^^^^^^^^^^^^^
 We'll assemble android boot image with ``u-boot.bin`` instead of linux kernel,
 and FIT image instead of ``initramfs``. Android bootloader expect gzipped kernel
-with appended dtb, so let's mimic linux to satisfy stock bootloader:
+with appended dtb, so let's mimic linux to satisfy stock bootloader.
 
-- create dump dtb::
+Boards
+------------
+starqlte
+^^^^^^^^^^^^
+
+The starqltechn is a production board for Samsung S9 (SM-G9600) phone,
+based on the Qualcomm SDM845 SoC.
+
+Steps:
+
+- Build u-boot::
+
+	$ export CROSS_COMPILE=<aarch64 toolchain prefix>
+	$ make starqltechn_defconfig
+	$ make
+
+- Create dump dtb::
 
 	workdir=/tmp/prepare_payload
 	mkdir -p "$workdir"
@@ -56,10 +72,15 @@  with appended dtb, so let's mimic linux to satisfy stock bootloader:
 	};
 	EOF
 
-- gzip u-boot ``gzip u-boot.bin``
-- append dtb to gzipped u-boot: ``cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb``
+- gzip u-boot::
+
+	gzip u-boot.bin
 
-Now we've got everything to build android boot image:::
+- Append dtb to gzipped u-boot::
+
+	cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb
+
+- Now we've got everything to build android boot image::
 
 	mkbootimg --base 0x0 --kernel_offset 0x00008000 \
 	--ramdisk_offset 0x02000000 --tags_offset 0x01e00000 \
@@ -68,16 +89,69 @@  Now we've got everything to build android boot image:::
 	--kernel u-boot.bin.gz-dtb \
 	-o boot.img
 
-Flash image with your phone's flashing method.
+- Flash image with your phone's flashing method.
 
-Boards
-------------
-starqlte
-^^^^^^^^^^^^
+More information can be found on the `Samsung S9 page`_.
 
-The starqltechn is a production board for Samsung S9 (SM-G9600) phone,
-based on the Qualcomm SDM845 SoC.
+dragonboard845c
+^^^^^^^^^^^^^^^
 
-More information can be found on the `Samsung S9 page`_.
+The dragonboard845c is a Qualcomm Robotics RB3 Development Platform, based on
+the Qualcomm SDM845 SoC.
+
+Steps:
+
+- Build u-boot::
+
+	$ export CROSS_COMPILE=<aarch64 toolchain prefix>
+	$ make dragonboard845c_defconfig
+	$ make
+
+- Create dummy dtb::
+
+	workdir=/tmp/prepare_payload
+	mkdir -p "$workdir"
+	mock_dtb="$workdir"/payload_mock.dtb
+
+	dtc -I dts -O dtb -o "$mock_dtb" << EOF
+	/dts-v1/;
+	/ {
+		#address-cells = <2>;
+		#size-cells = <2>;
+
+		memory@80000000 {
+			device_type = "memory";
+			/* We expect the bootloader to fill in the size */
+			reg = <0 0x80000000 0 0>;
+		};
+
+		chosen { };
+	};
+	EOF
+
+- gzip u-boot::
+
+	gzip u-boot.bin
+
+- Append dtb to gzipped u-boot::
+
+	 cat u-boot.bin.gz "$mock_dtb" > u-boot.bin.gz-dtb
+
+- A ``db845c.its`` file can be found in ``board/qualcomm/dragonboard845c/``
+  directory. It expects a folder as ``db845c_imgs/`` in the main directory
+  containing pre-built kernel, dts and ramdisk images. See ``db845c.its``
+  for full path to images::
+
+	mkimage -f db845c.its db845c.itb
+
+- Now we've got everything to build android boot image::
+
+	mkbootimg --kernel u-boot.bin.gz-dtb --ramdisk db845c.itb \
+	--output boot.img --pagesize 4096 --base 0x80000000
+
+- Flash boot.img using db845c fastboot method.
+
+More information can be found on the `DragonBoard 845c page`_.
 
 .. _Samsung S9 page: https://en.wikipedia.org/wiki/Samsung_Galaxy_S9
+.. _DragonBoard 845c page: https://www.96boards.org/product/rb3-platform/
diff --git a/include/configs/dragonboard845c.h b/include/configs/dragonboard845c.h
new file mode 100644
index 0000000000..108dde199b
--- /dev/null
+++ b/include/configs/dragonboard845c.h
@@ -0,0 +1,28 @@ 
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Configuration file for Dragonboard 845c, based on Qualcomm SDA845 chip
+ *
+ * (C) Copyright 2022 Sumit Garg <sumit.garg@linaro.org>
+ */
+
+#ifndef __CONFIGS_SDM845_H
+#define __CONFIGS_SDM845_H
+
+#include <linux/sizes.h>
+#include <asm/arch/sysmap-sdm845.h>
+
+#define CONFIG_SYS_BAUDRATE_TABLE	{ 115200, 230400, 460800, 921600 }
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"bootm_size=0x5000000\0"	\
+	"bootm_low=0x80000000\0"	\
+	"bootcmd=bootm $prevbl_initrd_start_addr\0"
+
+/* Size of malloc() pool */
+#define CONFIG_SYS_BOOTM_LEN	SZ_64M
+
+/* Monitor Command Prompt */
+#define CONFIG_SYS_CBSIZE	512
+#define CONFIG_SYS_MAXARGS	64
+
+#endif