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u-boot/arch/arm/dts/imx6ull-dart-6ul.dtsi
Marc Ferland 37648b600c arm: dart6ul: read and print SoM info from eeprom on startup 
The dart6ul has an i2c eeprom at 0x50 which contains, among other
things, the manufacturing/revision/options info of the SoM. This patch
replaces the current checkboard() implementation with a more
exhaustive one based on the content of the eeprom.

Since this code uses the new driver model, some changes were also
required in the DTS to make the nodes related to i2c available before
relocation.

This code was inspired from the supported u-boot code from Variscite
which can be found here:

https://github.com/varigit/uboot-imx/tree/imx_v2018.03_4.14.78_1.0.0_ga_var02

New output example:

Board: PN: VSM-6UL-705B, Assy: AS1812142257, Date: 2019 Feb 17
       Storage: eMMC, Wifi: yes, DDR: 1024 MiB, Rev: 2.4G

Signed-off-by: Marc Ferland <ferlandm@amotus.ca>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-12-26 14:56:09 +01:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2019 Parthiban Nallathambi <parthitce@gmail.com>
*/
/ {
model = "Variscite DART-6UL i.MX6 Ultra Low Lite SOM";
compatible = "variscite,imx6ull-dart-6ul", "fsl,imx6ull";
memory {
reg = <0x80000000 0x20000000>;
};
chosen {
stdout-path = &uart1;
};
aliases {
eeprom0 = &eeprom_som;
};
};
&fec1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet1>;
phy-mode = "rmii";
phy-handle = <&ethphy0>;
status = "okay";
mdio1: mdio1 {
#address-cells = <1>;
#size-cells = <0>;
ethphy0: ethernet-phy@1 {
reg = <1>;
micrel,led-mode = <1>;
};
};
};
&fec2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_enet2>;
phy-mode = "rmii";
phy-handle = <&ethphy1>;
status = "okay";
mdio2: mdio2 {
#address-cells = <1>;
#size-cells = <0>;
ethphy1: ethernet-phy@2 {
reg = <2>;
micrel,led-mode = <1>;
};
};
};
&gpio1 {
u-boot,dm-pre-reloc;
};
&gpmi {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_gpmi_nand>;
nand-on-flash-bbt;
fsl,no-blockmark-swap;
status = "disabled";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "uboot";
reg = <0x0 0x400000>;
};
partition@400000 {
label = "uboot-env";
reg = <0x400000 0x100000>;
};
partition@500000 {
label = "root";
reg = <0x500000 0x0>;
};
};
&i2c1 {
clock-frequency = <100000>;
pinctrl-names = "default", "gpio";
pinctrl-0 = <&pinctrl_i2c1>;
pinctrl-1 = <&pinctrl_i2c1_gpio>;
scl-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
sda-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
status = "okay";
};
&i2c2 {
clock-frequency = <100000>;
pinctrl-names = "default", "gpio";
pinctrl-0 = <&pinctrl_i2c2>;
pinctrl-1 = <&pinctrl_i2c2_gpio>;
scl-gpios = <&gpio1 30 GPIO_ACTIVE_HIGH>;
sda-gpios = <&gpio1 31 GPIO_ACTIVE_HIGH>;
status = "okay";
u-boot,dm-pre-reloc;
eeprom_som: eeprom@50 {
u-boot,dm-pre-reloc;
compatible = "atmel,24c04";
reg = <0x50>;
status = "okay";
};
};
&pwm1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pwm1>;
#pwm-cells = <3>;
status = "okay";
};
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1>;
status = "okay";
};
&usdhc1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc1>;
cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
bus-width = <0x4>;
no-1-8-v;
status = "okay";
};
&usdhc2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2>;
bus-width = <8>;
no-1-8-v;
non-removable;
keep-power-in-suspend;
status = "disabled";
};
&iomuxc {
pinctrl-names = "default";
pinctrl_enet1: enet1grp {
fsl,pins = <
MX6UL_PAD_GPIO1_IO06__ENET1_MDIO 0x1b0b0
MX6UL_PAD_GPIO1_IO07__ENET1_MDC 0X1b0b0
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_IO06__ENET2_MDIO 0x1b0b0
MX6UL_PAD_GPIO1_IO07__ENET2_MDC 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_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_i2c1: i2cgrp {
fsl,pins = <
MX6UL_PAD_UART4_TX_DATA__I2C1_SCL 0x4001b8b0
MX6UL_PAD_UART4_RX_DATA__I2C1_SDA 0x4001b8b0
>;
};
pinctrl_i2c1_gpio: i2c1grp_gpio {
fsl,pins = <
MX6UL_PAD_UART4_TX_DATA__GPIO1_IO28 0x1b8b0
MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x1b8b0
>;
};
pinctrl_i2c2: i2cgrp {
u-boot,dm-pre-reloc;
fsl,pins = <
MX6UL_PAD_UART5_TX_DATA__I2C2_SCL 0x4001b8b0
MX6UL_PAD_UART5_RX_DATA__I2C2_SDA 0x4001b8b0
>;
};
pinctrl_i2c2_gpio: i2c2grp_gpio {
u-boot,dm-pre-reloc;
fsl,pins = <
MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30 0x1b8b0
MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31 0x1b8b0
>;
};
pinctrl_pwm1: pwm1grp {
fsl,pins = <
MX6UL_PAD_LCD_DATA00__GPIO3_IO05 0x1b0b1
>;
};
pinctrl_uart1: uart1grp {
fsl,pins = <
MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1
MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX 0x1b0b1
>;
};
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_usdhc2: usdhc2grp {
fsl,pins = <
MX6UL_PAD_NAND_WE_B__USDHC2_CMD 0x170f9
MX6UL_PAD_NAND_RE_B__USDHC2_CLK 0x100f9
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
>;
};
};
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