[PATCH v2] imx: Add SeeedStudio NPI-IMX6ULL Support
Navin Sankar Velliangiri
navin at linumiz.com
Tue May 18 05:33:20 CEST 2021
CPU: Freescale i.MX6ULL rev1.1 792 MHz (running at 396 MHz)
CPU: Industrial temperature grade (-40C to 105C) at 49C
Reset cause: POR
Model: Seeed NPi iMX6ULL Dev Board with NAND
Board: Seeed NPi i.MX6ULL Dev Board
DRAM: 512 MiB
NAND: 512 MiB
MMC: FSL_SDHC: 0
In: serial at 2020000
Out: serial at 2020000
Err: serial at 2020000
Net: FEC0
Working:
- Eth0
- MMC/SD
- NAND
- UART 1
- USB host
Signed-off-by: Navin Sankar Velliangiri <navin at linumiz.com>
Note:
Changes in v2:
* removed unnecessary space in imx6ull-seeed-npi-imx6ull-dev-board.dts file.
* Used SZ_2M for CONFIG_SYS_MALLOC_LEN size allocation.
---
arch/arm/Kconfig | 1 +
arch/arm/dts/Makefile | 1 +
.../imx6ull-seeed-npi-imx6ull-dev-board.dts | 19 ++
.../dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi | 24 ++
arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi | 271 ++++++++++++++++++
arch/arm/mach-imx/mx6/Kconfig | 11 +
board/seeed/npi_imx6ull/Kconfig | 12 +
board/seeed/npi_imx6ull/MAINTAINERS | 9 +
board/seeed/npi_imx6ull/Makefile | 4 +
board/seeed/npi_imx6ull/README | 61 ++++
board/seeed/npi_imx6ull/npi_imx6ull.c | 114 ++++++++
board/seeed/npi_imx6ull/spl.c | 205 +++++++++++++
configs/seeed_npi_imx6ull_defconfig | 80 ++++++
include/configs/npi_imx6ull.h | 96 +++++++
14 files changed, 908 insertions(+)
create mode 100644 arch/arm/dts/imx6ull-seeed-npi-imx6ull-dev-board.dts
create mode 100644 arch/arm/dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi
create mode 100644 arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi
create mode 100644 board/seeed/npi_imx6ull/Kconfig
create mode 100644 board/seeed/npi_imx6ull/MAINTAINERS
create mode 100644 board/seeed/npi_imx6ull/Makefile
create mode 100644 board/seeed/npi_imx6ull/README
create mode 100644 board/seeed/npi_imx6ull/npi_imx6ull.c
create mode 100644 board/seeed/npi_imx6ull/spl.c
create mode 100644 configs/seeed_npi_imx6ull_defconfig
create mode 100644 include/configs/npi_imx6ull.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 31d687ea01..3c46f3ff39 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2008,6 +2008,7 @@ source "board/hisilicon/poplar/Kconfig"
source "board/isee/igep003x/Kconfig"
source "board/kontron/sl28/Kconfig"
source "board/myir/mys_6ulx/Kconfig"
+source "board/seeed/npi_imx6ull/Kconfig"
source "board/spear/spear300/Kconfig"
source "board/spear/spear310/Kconfig"
source "board/spear/spear320/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index aec5020a0f..6cbaafcc73 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -798,6 +798,7 @@ dtb-$(CONFIG_MX6ULL) += \
imx6ull-14x14-evk.dtb \
imx6ull-colibri.dtb \
imx6ull-myir-mys-6ulx-eval.dtb \
+ imx6ull-seeed-npi-imx6ull-dev-board.dtb \
imx6ull-phytec-segin-ff-rdk-emmc.dtb \
imx6ull-dart-6ul.dtb \
imx6ull-somlabs-visionsom.dtb \
diff --git a/arch/arm/dts/imx6ull-seeed-npi-imx6ull-dev-board.dts b/arch/arm/dts/imx6ull-seeed-npi-imx6ull-dev-board.dts
new file mode 100644
index 0000000000..ce03ddfd21
--- /dev/null
+++ b/arch/arm/dts/imx6ull-seeed-npi-imx6ull-dev-board.dts
@@ -0,0 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+/dts-v1/;
+#include "imx6ull.dtsi"
+#include "imx6ull-seeed-npi-imx6ull.dtsi"
+#include "imx6ull-seeed-npi-imx6ull-u-boot.dtsi"
+
+/ {
+ model = "Seeed NPi iMX6ULL Dev Board with NAND";
+ compatible = "seeed,imx6ull-seeed-npi-imx6ull", "fsl,imx6ull";
+};
+
+&gpmi {
+ status = "okay";
+};
diff --git a/arch/arm/dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi b/arch/arm/dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi
new file mode 100644
index 0000000000..054e1aa94b
--- /dev/null
+++ b/arch/arm/dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+&pinctrl_uart1 {
+ u-boot,dm-pre-reloc;
+};
+
+&gpmi {
+ u-boot,dm-spl;
+ u-boot,dm-pre-reloc;
+};
+
+&usdhc1 {
+ u-boot,dm-spl;
+ u-boot,dm-pre-reloc;
+};
+
+&usdhc2 {
+ u-boot,dm-spl;
+ u-boot,dm-pre-reloc;
+};
diff --git a/arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi b/arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi
new file mode 100644
index 0000000000..b019474dba
--- /dev/null
+++ b/arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pwm/pwm.h>
+
+/ {
+ model = "Seeed NPi-iMX6ULL Dev Board";
+ compatible = "fsl,imx6ull";
+
+ chosen {
+ stdout-path = &uart1;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ user-led {
+ label = "User";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpios>;
+ gpios = <&gpio5 3 GPIO_ACTIVE_HIGH>;
+ linux,default-trigger = "heartbeat";
+ };
+ };
+};
+
+&gpmi {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpmi_nand>;
+ nand-on-flash-bbt;
+ status = "disabled";
+};
+
+&uart1 {
+ pinctrl-name = "default";
+ pinctrl-0 = <&pinctrl_uart1>;
+ status = "okay";
+};
+
+&usdhc1 {
+ pinctrl-names = "default", "state_100mhz", "state_200mhz";
+ pinctrl-0 = <&pinctrl_usdhc1>;
+ pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+ cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+ no-1-8-v;
+ keep-power-in-suspend;
+ wakeup-source;
+ status = "okay";
+};
+
+&usdhc2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usdhc2>;
+ pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
+ pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
+ bus-width = <8>;
+ non-removable;
+ keep-power-in-suspend;
+};
+
+&fec1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_enet1>;
+ phy-mode = "rmii";
+ phy-handle = <ðphy0>;
+ status = "okay";
+};
+
+&fec2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_enet2>;
+ phy-mode = "rmii";
+ phy-handle = <ðphy1>;
+ status = "okay";
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ethphy0: ethernet-phy at 2 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <2>;
+ micrel,led-mode = <1>;
+ clocks = <&clks IMX6UL_CLK_ENET_REF>;
+ clock-names = "rmii-ref";
+ };
+
+ ethphy1: ethernet-phy at 1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+ micrel,led-mode = <1>;
+ clocks = <&clks IMX6UL_CLK_ENET2_REF>;
+ clock-names = "rmii-ref";
+ };
+ };
+};
+
+&usbotg1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_usb_otg1_id>;
+ dr_mode = "otg";
+ srp-disable;
+ hnp-disable;
+ adp-disable;
+ status = "okay";
+};
+
+&usbotg2 {
+ dr_mode = "host";
+ disable-over-current;
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpios>;
+
+ pinctrl_uart1: uart1grp {
+ fsl,pin = <
+ MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
+ MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
+ >;
+ };
+
+ pinctrl_usb_otg1_id: usbotg1idgrp {
+ fsl,pin = <
+ MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID 0x17059
+ >;
+ };
+
+ pinctrl_gpmi_nand: gpminandgrp {
+ fsl,pins = <
+ MX6UL_PAD_NAND_DQS__RAWNAND_DQS 0x0b0b1
+ MX6UL_PAD_NAND_CLE__RAWNAND_CLE 0x0b0b1
+ MX6UL_PAD_NAND_ALE__RAWNAND_ALE 0x0b0b1
+ MX6UL_PAD_NAND_WP_B__RAWNAND_WP_B 0x0b0b1
+ MX6UL_PAD_NAND_READY_B__RAWNAND_READY_B 0x0b000
+ MX6UL_PAD_NAND_CE0_B__RAWNAND_CE0_B 0x0b0b1
+ MX6UL_PAD_NAND_CE1_B__RAWNAND_CE1_B 0x0b0b1
+ MX6UL_PAD_NAND_RE_B__RAWNAND_RE_B 0x0b0b1
+ MX6UL_PAD_NAND_WE_B__RAWNAND_WE_B 0x0b0b1
+ MX6UL_PAD_NAND_DATA00__RAWNAND_DATA00 0x0b0b1
+ MX6UL_PAD_NAND_DATA01__RAWNAND_DATA01 0x0b0b1
+ MX6UL_PAD_NAND_DATA02__RAWNAND_DATA02 0x0b0b1
+ MX6UL_PAD_NAND_DATA03__RAWNAND_DATA03 0x0b0b1
+ MX6UL_PAD_NAND_DATA04__RAWNAND_DATA04 0x0b0b1
+ MX6UL_PAD_NAND_DATA05__RAWNAND_DATA05 0x0b0b1
+ MX6UL_PAD_NAND_DATA06__RAWNAND_DATA06 0x0b0b1
+ MX6UL_PAD_NAND_DATA07__RAWNAND_DATA07 0x0b0b1
+ >;
+ };
+
+ pinctrl_usdhc1: usdhc1grp {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x17059
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x10059
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x17059
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x17059
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x17059
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x17059
+ MX6UL_PAD_UART1_RTS_B__GPIO1_IO19 0x17059
+ >;
+ };
+
+ pinctrl_usdhc1_100mhz: usdhc1grp100mhz {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x170b9
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x100b9
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170b9
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170b9
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170b9
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170b9
+ >;
+ };
+
+ pinctrl_usdhc1_200mhz: usdhc1grp200mhz {
+ fsl,pins = <
+ MX6UL_PAD_SD1_CMD__USDHC1_CMD 0x170f9
+ MX6UL_PAD_SD1_CLK__USDHC1_CLK 0x100f9
+ MX6UL_PAD_SD1_DATA0__USDHC1_DATA0 0x170f9
+ MX6UL_PAD_SD1_DATA1__USDHC1_DATA1 0x170f9
+ MX6UL_PAD_SD1_DATA2__USDHC1_DATA2 0x170f9
+ MX6UL_PAD_SD1_DATA3__USDHC1_DATA3 0x170f9
+ >;
+ };
+
+ pinctrl_usdhc2: usdhc2grp {
+ fsl,pins = <
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x10069
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x17059
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x17059
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x17059
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x17059
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x17059
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x17059
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x17059
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x17059
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x17059
+ >;
+ };
+
+ pinctrl_usdhc2_100mhz: usdhc2grp100mhz {
+ fsl,pins = <
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x100b9
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x170b9
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170b9
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170b9
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170b9
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170b9
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170b9
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170b9
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170b9
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170b9
+ >;
+ };
+
+ pinctrl_usdhc2_200mhz: usdhc2grp200mhz {
+ fsl,pins = <
+ MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x100f9
+ MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x170f9
+ MX6UL_PAD_NAND_DATA00__USDHC2_DATA0 0x170f9
+ MX6UL_PAD_NAND_DATA01__USDHC2_DATA1 0x170f9
+ MX6UL_PAD_NAND_DATA02__USDHC2_DATA2 0x170f9
+ MX6UL_PAD_NAND_DATA03__USDHC2_DATA3 0x170f9
+ MX6UL_PAD_NAND_DATA04__USDHC2_DATA4 0x170f9
+ MX6UL_PAD_NAND_DATA05__USDHC2_DATA5 0x170f9
+ MX6UL_PAD_NAND_DATA06__USDHC2_DATA6 0x170f9
+ MX6UL_PAD_NAND_DATA07__USDHC2_DATA7 0x170f9
+ >;
+ };
+
+ pinctrl_enet1: enet1grp {
+ fsl,pins = <
+ MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN 0x1b0b0
+ MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER 0x1b0b0
+ MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00 0x1b0b0
+ MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01 0x1b0b0
+ MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN 0x1b0b0
+ MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b0b0
+ MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b0b0
+ MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1 0x4001b031
+ >;
+ };
+
+ pinctrl_enet2: enet2grp {
+ fsl,pins = <
+ MX6UL_PAD_GPIO1_IO07__ENET2_MDC 0x1b0b0
+ MX6UL_PAD_GPIO1_IO06__ENET2_MDIO 0x1b0b0
+ MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN 0x1b0b0
+ MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER 0x1b0b0
+ MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00 0x1b0b0
+ MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01 0x1b0b0
+ MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN 0x1b0b0
+ MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00 0x1b0b0
+ MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01 0x1b0b0
+ MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2 0x4001b031
+ >;
+ };
+
+ pinctrl_gpios: gpiosgrp {
+ fsl,pins = <
+ MX6UL_PAD_SNVS_TAMPER3__GPIO5_IO03 0x0b0b0
+ >;
+ };
+};
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index 9450e6a683..c313698423 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -453,6 +453,17 @@ config TARGET_NITROGEN6X
imply USB_ETHER_SMSC95XX
imply USB_HOST_ETHER
+config TARGET_NPI_IMX6ULL
+ bool "Seeed NPI-IMX6ULL"
+ depends on MX6ULL
+ select DM
+ select DM_ETH
+ select DM_MMC
+ select DM_GPIO
+ select DM_SERIAL
+ select DM_THERMAL
+ select SUPPORT_SPL
+
config TARGET_OPOS6ULDEV
bool "Armadeus OPOS6ULDev board"
depends on MX6UL
diff --git a/board/seeed/npi_imx6ull/Kconfig b/board/seeed/npi_imx6ull/Kconfig
new file mode 100644
index 0000000000..5e298299a3
--- /dev/null
+++ b/board/seeed/npi_imx6ull/Kconfig
@@ -0,0 +1,12 @@
+if TARGET_NPI_IMX6ULL
+
+config SYS_BOARD
+ default "npi_imx6ull"
+
+config SYS_VENDOR
+ default "seeed"
+
+config SYS_CONFIG_NAME
+ default "npi_imx6ull"
+
+endif
diff --git a/board/seeed/npi_imx6ull/MAINTAINERS b/board/seeed/npi_imx6ull/MAINTAINERS
new file mode 100644
index 0000000000..c6a915c79b
--- /dev/null
+++ b/board/seeed/npi_imx6ull/MAINTAINERS
@@ -0,0 +1,9 @@
+NPI_IMX6ULL BOARD
+M: Navin Sankar Velliangiri <navin at linumiz.com>
+S: Maintained
+F: arch/arm/dts/imx6ull-seeed-npi-imx6ull-dev-board.dts
+F: arch/arm/dts/imx6ull-seeed-npi-imx6ull-u-boot.dtsi
+F: arch/arm/dts/imx6ull-seeed-npi-imx6ull.dtsi
+F: board/seeed/npi-imx6ull/
+F: configs/seeed_npi_imx6ull_defconfig
+F: include/configs/npi_imx6ull.h
diff --git a/board/seeed/npi_imx6ull/Makefile b/board/seeed/npi_imx6ull/Makefile
new file mode 100644
index 0000000000..93ea413517
--- /dev/null
+++ b/board/seeed/npi_imx6ull/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y := npi_imx6ull.o
+obj-$(CONFIG_SPL_BUILD) += spl.o
diff --git a/board/seeed/npi_imx6ull/README b/board/seeed/npi_imx6ull/README
new file mode 100644
index 0000000000..01d218a9bc
--- /dev/null
+++ b/board/seeed/npi_imx6ull/README
@@ -0,0 +1,61 @@
+How to use U-BOOT on SeeedStudio NPI-IMX6ULL Single Board Computer
+------------------------------------------------------------------
+
+- Configure and build U-Boot for NPI-IMX6ULL:
+
+ $ export ARCH=arm
+ $ export CROSS_COMPILE=arm-none-linux-gnueabihf-
+ $ make seeed_npi_imx6ull_defconfig
+ $ make
+
+This will generate SPL and u-boot-dtb.img images.
+
+Boot from MMC/SD:
+- The SPL and u-boot-dtb.img images need to be flashed into the micro SD card:
+
+ $ sudo dd if=SPL of=/dev/mmcblk0 bs=1k seek=1; sync
+ $ sudo dd if=u-boot-dtb.img of=/dev/mmcblk0 bs=1k seek=69; sync
+
+- Boot mode settings:
+
+ Boot switch position: SW1 -> 0
+ SW2 -> 1
+ SW3 -> 0
+ SW4 -> 0
+ SW5 -> 1
+ SW6 -> 0
+ SW7 -> 0
+ SW8 -> 1
+
+Boot from NAND:
+- Boot the board using SD/MMC or Serial download and load the SPL into memory
+either from SD/MMC or TFTP.
+
+Default MTD layout is 512k(spl),1m(uboot),1m(uboot-dup),-(ubi)
+
+Flash SPL to NAND from SD/MMC,
+
+ $ ext4load mmc 0:2 $loadaddr SPL
+ $ nand erase.part spl
+ $ nandbcb init $loadaddr 0x0 $filesize
+
+Flash u-boot image to NAND from SD/MMC,
+
+ $ ext4load mmc 0:2 $loadaddr u-boot-dtb.img
+ $ nand erase.part uboot
+ $ nand write $loadaddr uboot $filesize
+
+- Boot mode settings:
+
+ Boot switch position: SW1 -> 0
+ SW2 -> 1
+ SW3 -> 1
+ SW4 -> 0
+ SW5 -> 0
+ SW6 -> 1
+ SW7 -> 0
+ SW8 -> 0
+
+- Connect the Serial cable to UART0 and the PC for the console.
+
+- Reset the board using reset button and U-Boot should boot from NAND.
diff --git a/board/seeed/npi_imx6ull/npi_imx6ull.c b/board/seeed/npi_imx6ull/npi_imx6ull.c
new file mode 100644
index 0000000000..eb9ee555c8
--- /dev/null
+++ b/board/seeed/npi_imx6ull/npi_imx6ull.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+#include <init.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <fsl_esdhc_imx.h>
+#include <linux/bitops.h>
+#include <miiphy.h>
+#include <net.h>
+#include <netdev.h>
+#include <usb.h>
+#include <usb/ehci-ci.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ gd->ram_size = imx_ddr_size();
+
+ return 0;
+}
+
+#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+ PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | \
+ PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const uart1_pads[] = {
+ MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+ MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+ imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+
+int board_early_init_f(void)
+{
+ setup_iomux_uart();
+
+ return 0;
+}
+
+#ifdef CONFIG_FEC_MXC
+
+static int setup_fec(int fec_id)
+{
+ struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+ int ret;
+
+ if (fec_id == 0) {
+ /*
+ * Use 50MHz anatop loopback REF_CLK1 for ENET1,
+ * clear gpr1[13], set gpr1[17].
+ */
+ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
+ IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
+ } else {
+ /*
+ * Use 50MHz anatop loopbak REF_CLK2 for ENET2,
+ * clear gpr1[14], set gpr1[18].
+ */
+ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
+ IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
+ }
+
+ ret = enable_fec_anatop_clock(fec_id, ENET_50MHZ);
+ if (ret)
+ return ret;
+
+ enable_enet_clk(1);
+
+ return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
+
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+
+ return 0;
+}
+#endif
+
+int board_init(void)
+{
+ /* Address of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+#ifdef CONFIG_FEC_MXC
+ setup_fec(CONFIG_FEC_ENET_DEV);
+#endif
+
+ return 0;
+}
+
+int checkboard(void)
+{
+ printf("Board: Seeed NPi i.MX6ULL Dev Board\n");
+
+ return 0;
+}
diff --git a/board/seeed/npi_imx6ull/spl.c b/board/seeed/npi_imx6ull/spl.c
new file mode 100644
index 0000000000..4b56f52d98
--- /dev/null
+++ b/board/seeed/npi_imx6ull/spl.c
@@ -0,0 +1,205 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <spl.h>
+#include <asm/arch/clock.h>
+#include <asm/io.h>
+#include <asm/arch/mx6-ddr.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/sys_proto.h>
+#include <fsl_esdhc_imx.h>
+
+/* Configuration for Micron MT41K256M16TW-107 32M x 16 x 8 -> 512MiB */
+
+static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
+ .grp_addds = 0x00000030,
+ .grp_ddrmode_ctl = 0x00020000,
+ .grp_b0ds = 0x00000030,
+ .grp_ctlds = 0x00000030,
+ .grp_b1ds = 0x00000030,
+ .grp_ddrpke = 0x00000000,
+ .grp_ddrmode = 0x00020000,
+ .grp_ddr_type = 0x000c0000,
+};
+
+static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
+ .dram_dqm0 = 0x00000030,
+ .dram_dqm1 = 0x00000030,
+ .dram_ras = 0x00000030,
+ .dram_cas = 0x00000030,
+ .dram_odt0 = 0x00000030,
+ .dram_odt1 = 0x00000030,
+ .dram_sdba2 = 0x00000000,
+ .dram_sdclk_0 = 0x00000030,
+ .dram_sdqs0 = 0x00000030,
+ .dram_sdqs1 = 0x00000030,
+ .dram_reset = 0x00000030,
+};
+
+static struct mx6_mmdc_calibration mx6_mmcd_calib = {
+ .p0_mpwldectrl0 = 0x00000000,
+ .p0_mpdgctrl0 = 0x41480148,
+ .p0_mprddlctl = 0x40403E42,
+ .p0_mpwrdlctl = 0x40405852,
+};
+
+struct mx6_ddr_sysinfo ddr_sysinfo = {
+ .dsize = 0, /* Bus size = 16bit */
+ .cs_density = 32,
+ .ncs = 1,
+ .cs1_mirror = 0,
+ .rtt_wr = 1,
+ .rtt_nom = 1,
+ .walat = 1, /* Write additional latency */
+ .ralat = 5, /* Read additional latency */
+ .mif3_mode = 3, /* Command prediction working mode */
+ .bi_on = 1, /* Bank interleaving enabled */
+ .pd_fast_exit = 1,
+ .sde_to_rst = 0x10,
+ .rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
+ .ddr_type = DDR_TYPE_DDR3,
+ .refsel = 1, /* Refresh cycles at 32KHz */
+ .refr = 7, /* 8 refresh commands per refresh cycle */
+};
+
+static struct mx6_ddr3_cfg mem_ddr = {
+ .mem_speed = 1600,
+ .density = 4,
+ .width = 16,
+ .banks = 8,
+ .rowaddr = 15,
+ .coladdr = 10,
+ .pagesz = 2,
+ .trcd = 1375,
+ .trcmin = 4875,
+ .trasmin = 3500,
+};
+
+static void ccgr_init(void)
+{
+ struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+ writel(0xFFFFFFFF, &ccm->CCGR0);
+ writel(0xFFFFFFFF, &ccm->CCGR1);
+ writel(0xFFFFFFFF, &ccm->CCGR2);
+ writel(0xFFFFFFFF, &ccm->CCGR3);
+ writel(0xFFFFFFFF, &ccm->CCGR4);
+ writel(0xFFFFFFFF, &ccm->CCGR5);
+ writel(0xFFFFFFFF, &ccm->CCGR6);
+}
+
+static void spl_dram_init(void)
+{
+ mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+ mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
+}
+
+#ifdef CONFIG_FSL_ESDHC_IMX
+
+#define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
+ PAD_CTL_PUS_22K_UP | PAD_CTL_SPEED_LOW | \
+ PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST | \
+ PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+ MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA0__USDHC1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA1__USDHC1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA2__USDHC1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DATA3__USDHC1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_UART1_RTS_B__USDHC1_CD_B | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+#ifndef CONFIG_NAND_MXS
+static iomux_v3_cfg_t const usdhc2_pads[] = {
+ MX6_PAD_NAND_RE_B__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_WE_B__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA00__USDHC2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA01__USDHC2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA02__USDHC2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA03__USDHC2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA04__USDHC2_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA05__USDHC2_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA06__USDHC2_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_NAND_DATA07__USDHC2_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+#endif
+
+static struct fsl_esdhc_cfg usdhc_cfg[] = {
+ {
+ .esdhc_base = USDHC1_BASE_ADDR,
+ .max_bus_width = 4,
+ },
+#ifndef CONFIG_NAND_MXS
+ {
+ .esdhc_base = USDHC2_BASE_ADDR,
+ .max_bus_width = 8,
+ },
+#endif
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ return 1;
+}
+
+int board_mmc_init(struct bd_info *bis)
+{
+ int i, ret;
+
+ for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
+ switch (i) {
+ case 0:
+ SETUP_IOMUX_PADS(usdhc1_pads);
+ usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+ break;
+#ifndef CONFIG_NAND_MXS
+ case 1:
+ SETUP_IOMUX_PADS(usdhc2_pads);
+ usdhc_cfg[i].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+ break;
+#endif
+ default:
+ printf("Warning - USDHC%d controller not supporting\n",
+ i + 1);
+ return 0;
+ }
+
+ ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
+ if (ret) {
+ printf("Warning: failed to initialize mmc dev %d\n", i);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+#endif /* CONFIG_FSL_ESDHC_IMX */
+
+void board_init_f(ulong dummy)
+{
+ ccgr_init();
+
+ /* Setup AIPS and disable watchdog */
+ arch_cpu_init();
+
+ /* Setup iomux and fec */
+ board_early_init_f();
+
+ /* Setup GP timer */
+ timer_init();
+
+ /* UART clocks enabled and gd valid - init serial console */
+ preloader_console_init();
+
+ /* DDR initialization */
+ spl_dram_init();
+}
diff --git a/configs/seeed_npi_imx6ull_defconfig b/configs/seeed_npi_imx6ull_defconfig
new file mode 100644
index 0000000000..6503cabbd0
--- /dev/null
+++ b/configs/seeed_npi_imx6ull_defconfig
@@ -0,0 +1,80 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_SYS_TEXT_BASE=0x87800000
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_NR_DRAM_BANKS=8
+CONFIG_ENV_SIZE=0x4000
+CONFIG_MX6ULL=y
+CONFIG_TARGET_NPI_IMX6ULL=y
+CONFIG_SPL_TEXT_BASE=0x908000
+CONFIG_SPL_MMC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL=y
+CONFIG_DEFAULT_DEVICE_TREE="imx6ull-seeed-npi-imx6ull-dev-board"
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_FIT=y
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg"
+CONFIG_BOOTDELAY=3
+# CONFIG_USE_BOOTCOMMAND is not set
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_SPL_DMA=y
+CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_SPL_USB_HOST_SUPPORT=y
+CONFIG_SPL_USB_GADGET=y
+CONFIG_SPL_WATCHDOG_SUPPORT=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_SYS_MEMTEST_START=0x80000000
+CONFIG_SYS_MEMTEST_END=0x90000000
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_GPT=y
+# CONFIG_RANDOM_UUID is not set
+# CONFIG_CMD_I2C is not set
+CONFIG_CMD_MMC=y
+CONFIG_CMD_MTD=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_MTDPARTS=y
+CONFIG_MTDIDS_DEFAULT="nand0=gpmi-nand"
+CONFIG_MTDPARTS_DEFAULT="gpmi-nand:512k(spl),1m(uboot),1m(uboot-dup),-(ubi)"
+CONFIG_SYS_NAND_USE_FLASH_BBT=y
+CONFIG_CMD_UBI=y
+# CONFIG_ISO_PARTITION is not set
+CONFIG_OF_CONTROL=y
+CONFIG_SYS_RELOC_GD_ENV_ADDR=y
+# CONFIG_DM_I2C_GPIO is not set
+# CONFIG_SYS_I2C_MXC is not set
+CONFIG_FSL_USDHC=y
+CONFIG_MTD=y
+CONFIG_DM_MTD=y
+CONFIG_MTD_RAW_NAND=y
+CONFIG_NAND_MXS=y
+CONFIG_NAND_MXS_DT=y
+CONFIG_SYS_NAND_U_BOOT_LOCATIONS=y
+CONFIG_SYS_NAND_U_BOOT_OFFS=0x80000
+CONFIG_SYS_NAND_U_BOOT_OFFS_REDUND=0x180000
+CONFIG_PHYLIB=y
+CONFIG_PHY_MICREL=y
+CONFIG_PHY_MICREL_KSZ8XXX=y
+CONFIG_DM_ETH=y
+CONFIG_FEC_MXC=y
+CONFIG_MII=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+CONFIG_DM_REGULATOR_GPIO=y
+CONFIG_DM_PMIC=y
+CONFIG_NET_RANDOM_ETHADDR=y
+# CONFIG_SPL_PMIC_CHILDREN is not set
+CONFIG_MMC=y
+CONFIG_ENV_IS_IN_MMC=y
+CONFIG_ENV_OFFSET=0x3c00000
+CONFIG_MXC_UART=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_GADGET=y
+CONFIG_SMBIOS_MANUFACTURER="Seeed"
diff --git a/include/configs/npi_imx6ull.h b/include/configs/npi_imx6ull.h
new file mode 100644
index 0000000000..3be9b8ff55
--- /dev/null
+++ b/include/configs/npi_imx6ull.h
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: GPL-2.0+
+ *
+ * Copyright (c) 2021 Linumiz
+ * Author: Navin Sankar Velliangiri <navin at linumiz.com>
+ */
+
+#ifndef _NPI_IMX6ULL_H
+#define _NPI_IMX6ULL_H
+
+#include <linux/sizes.h>
+#include "mx6_common.h"
+
+/* SPL options */
+#include "imx6_spl.h"
+
+#define CONFIG_SYS_FSL_USDHC_NUM 1
+
+/* Size of malloc() poll */
+#define CONFIG_SYS_MALLOC_LEN SZ_2M
+
+/* Console configs */
+#define CONFIG_MXC_UART_BASE UART1_BASE
+
+/* MMC Configs */
+#define CONFIG_SYS_FSL_ESDHC_ADDR USDHC2_BASE_ADDR
+
+#define CONFIG_NETMASK 255.255.255.0
+
+#define CONFIG_SYS_LOAD_ADDR CONFIG_LOADADDR
+#define CONFIG_SYS_HZ 1000
+
+/* Physical Memory Map */
+#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR
+
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM
+#define CONFIG_SYS_INIT_RAM_ADDR IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_SIZE IRAM_SIZE
+
+#define CONFIG_SYS_INIT_SP_OFFSET \
+ (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR \
+ (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+/* environment settings */
+#if defined(CONFIG_ENV_IS_IN_MMC)
+#define CONFIG_SYS_MMC_ENV_DEV 0
+#elif defined(CONFIG_ENV_IS_IN_NAND)
+#undef CONFIG_ENV_SIZE
+#define CONFIG_ENV_SECT_SIZE (128 << 10)
+#define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
+#endif
+
+/* NAND */
+#define CONFIG_SYS_MAX_NAND_DEVICE 1
+#define CONFIG_SYS_NAND_BASE 0x40000000
+
+/* USB Configs */
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#define CONFIG_MXC_USB_PORTSC (PORT_PTS_UTMI | PORT_PTS_PTW)
+#define CONFIG_MXC_USB_FLAGS 0
+#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
+
+#ifdef CONFIG_CMD_NET
+#define IMX_FEC_BASE ENET_BASE_ADDR
+#define CONFIG_FEC_MXC_PHYADDR 0x1
+#define CONFIG_FEC_XCV_TYPE RMII
+#define CONFIG_ETHPRIME "eth0"
+#endif
+
+#define CONFIG_IMX_THERMAL
+
+#define CONFIG_FEC_ENET_DEV 1
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+ "console=ttymxc0,115200n8\0" \
+ "image=zImage\0" \
+ "fdtfile=imx6ull-seeed-npi-dev-board.dtb\0" \
+ "mtdids=" CONFIG_MTDIDS_DEFAULT "\0" \
+ "mtdparts=" CONFIG_MTDPARTS_DEFAULT "\0" \
+ "fdt_addr_r=0x82000000\0" \
+ "kernel_addr_r=0x81000000\0" \
+ "pxefile_addr_r=0x87100000\0" \
+ "ramdisk_addr_r=0x82100000\0" \
+ "scriptaddr=0x87000000\0" \
+ "root=/dev/mmcblk0p2 rootwait\0" \
+ BOOTENV
+
+#define BOOT_TARGET_DEVICES(func) \
+ func(MMC, mmc, 0) \
+ func(UBIFS, ubifs, 0) \
+ func(PXE, pxe, na) \
+ func(DHCP, dhcp, na)
+
+#include <config_distro_bootcmd.h>
+
+#endif /* _NPI_IMX6ULL_H */
--
2.31.1
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