arm: imx: add i.MX8ULP EVK support

Add i.MX8ULP EVK basic support, support SD/I2C/ENET/LPUART

Log as below: I would keep some debug info for now, and after we move
to be stable and production launch, we could drop that.

U-Boot SPL 2021.07-rc4-00164-gb800e19a6b (Jun 29 2021 - 10:23:30 +0800)
Normal Boot
upower_init: soc_id=48
upower_init: version:11.11.6
upower_init: start uPower RAM service
user_upwr_rdy_callb: soc=b
user_upwr_rdy_callb: RAM version:12.6
Turn on switches ok
Turn on memories ok
Clear DDR retention ok
Poll for freq_chg_req on SIM register and change to F1 frequency.
Poll for freq_chg_req on SIM register and change to F0 frequency.
Poll for freq_chg_req on SIM register and change to F1 frequency.
Poll for freq_chg_req on SIM register and change to F2 frequency.
Poll for freq_chg_req on SIM register and change to F1 frequency.
Poll for freq_chg_req on SIM register and change to F2 frequency.
complete
De-Skew PLL is locked and ready
WDT:   Not found!
Trying to boot from BOOTROM
image offset 0x8000, pagesize 0x200, ivt offset 0x0
Load image from 0x3a800 by ROM_API
NOTICE:  BL31: v2.4(release):imx_5.10.35_2.0.0_imx8ulp_er-10-gf37e59b94
NOTICE:  BL31: Built : 01:56:58, Jun 29 2021
NOTICE:  upower_init: start uPower RAM service
NOTICE:  user_upwr_rdy_callb: soc=b
NOTICE:  user_upwr_rdy_callb: RAM version:12.6

U-Boot 2021.07-rc4-00164-gb800e19a6b (Jun 29 2021 - 10:23:30 +0800)

CPU:   Freescale i.MX8ULP rev1.0 at 744 MHz
Reset cause: POR
Boot mode: Single boot
Model: FSL i.MX8ULP EVK
DRAM:  2 GiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 2
Loading Environment from MMC... ***
Warning - bad CRC, using default environment

In:    serial@293a0000
Out:   serial@293a0000
Err:   serial@293a0000
Net:
Warning: ethernet@29950000 (eth0) using random MAC address -
96:35:88:62:e0:44
eth0: ethernet@29950000
Hit any key to stop autoboot:  0

Signed-off-by: Peng Fan <peng.fan@nxp.com>

4 files changed, 273 insertions, 0 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index e62f7fc1c5..c42715ead4 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -862,6 +862,9 @@ dtb-$(CONFIG_ARCH_IMX8) += \
 	imx8-deneb.dtb \
 	imx8-giedi.dtb
 
+dtb-$(CONFIG_ARCH_IMX8ULP) += \
+	imx8ulp-evk.dtb
+
 dtb-$(CONFIG_ARCH_IMX8M) += \
 	imx8mm-evk.dtb \
 	imx8mm-icore-mx8mm-ctouch2.dtb \
diff --git a/arch/arm/dts/imx8ulp-evk-u-boot.dtsi b/arch/arm/dts/imx8ulp-evk-u-boot.dtsi
new file mode 100644
index 0000000000..7c1dab2acf
--- /dev/null
+++ b/arch/arm/dts/imx8ulp-evk-u-boot.dtsi
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2021 NXP
+ */
+
+&{/soc@0} {
+	u-boot,dm-spl;
+};
+
+&per_bridge3 {
+	u-boot,dm-spl;
+};
+
+&per_bridge4 {
+	u-boot,dm-spl;
+};
+
+&iomuxc1 {
+	u-boot,dm-spl;
+};
+
+&pinctrl_lpuart5 {
+	u-boot,dm-spl;
+};
+
+&s400_mu {
+	u-boot,dm-spl;
+};
+
+&lpuart5 {
+	u-boot,dm-spl;
+};
+
+&usdhc0 {
+	u-boot,dm-spl;
+};
+
+&pinctrl_usdhc0 {
+	u-boot,dm-spl;
+};
diff --git a/arch/arm/dts/imx8ulp-evk.dts b/arch/arm/dts/imx8ulp-evk.dts
new file mode 100644
index 0000000000..da09ff48ff
--- /dev/null
+++ b/arch/arm/dts/imx8ulp-evk.dts
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright 2021 NXP
+ */
+
+/dts-v1/;
+
+#include "imx8ulp.dtsi"
+
+/ {
+	model = "FSL i.MX8ULP EVK";
+	compatible = "fsl,imx8ulp-evk", "fsl,imx8ulp";
+
+	chosen {
+		stdout-path = &lpuart5;
+		bootargs = "console=ttyLP1,115200 earlycon";
+	};
+
+	usdhc2_pwrseq: usdhc2_pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&pcal6408 2 GPIO_ACTIVE_LOW>;
+	};
+};
+
+&lpuart5 {
+	/* console */
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_lpuart5>;
+	pinctrl-1 = <&pinctrl_lpuart5>;
+	status = "okay";
+};
+
+&iomuxc1 {
+	pinctrl_lpuart5: lpuart5grp {
+		fsl,pins = <
+			MX8ULP_PAD_PTF14__LPUART5_TX	0x03
+			MX8ULP_PAD_PTF15__LPUART5_RX	0x03
+		>;
+	};
+
+	pinctrl_lpi2c7: lpi2c7grp {
+		fsl,pins = <
+			MX8ULP_PAD_PTE12__LPI2C7_SCL	0x27
+			MX8ULP_PAD_PTE13__LPI2C7_SDA	0x27
+		>;
+	};
+
+	pinctrl_usdhc0: usdhc0grp {
+		fsl,pins = <
+			MX8ULP_PAD_PTD0__SDHC0_RESET_B  0x43
+			MX8ULP_PAD_PTD1__SDHC0_CMD	0x43
+			MX8ULP_PAD_PTD2__SDHC0_CLK	0x10042
+			MX8ULP_PAD_PTD10__SDHC0_D0	0x43
+			MX8ULP_PAD_PTD9__SDHC0_D1	0x43
+			MX8ULP_PAD_PTD8__SDHC0_D2	0x43
+			MX8ULP_PAD_PTD7__SDHC0_D3	0x43
+			MX8ULP_PAD_PTD6__SDHC0_D4	0x43
+			MX8ULP_PAD_PTD5__SDHC0_D5	0x43
+			MX8ULP_PAD_PTD4__SDHC0_D6	0x43
+			MX8ULP_PAD_PTD3__SDHC0_D7	0x43
+			MX8ULP_PAD_PTD11__SDHC0_DQS	0x10042
+		>;
+	};
+
+	pinctrl_usdhc2_pte: usdhc2ptegrp {
+		fsl,pins = <
+			MX8ULP_PAD_PTE1__SDHC2_D0	0x43
+			MX8ULP_PAD_PTE0__SDHC2_D1	0x43
+			MX8ULP_PAD_PTE5__SDHC2_D2	0x43
+			MX8ULP_PAD_PTE4__SDHC2_D3	0x43
+			MX8ULP_PAD_PTE2__SDHC2_CLK	0x10042
+			MX8ULP_PAD_PTE3__SDHC2_CMD	0x43
+			MX8ULP_PAD_PTE7__PTE7		0x10003
+		>;
+	};
+
+	pinctrl_fec: fecgrp {
+		fsl,pins = <
+			MX8ULP_PAD_PTE14__ENET0_MDIO		0x43
+			MX8ULP_PAD_PTE15__ENET0_MDC	0x43
+			MX8ULP_PAD_PTE18__ENET0_CRS_DV	0x43
+			MX8ULP_PAD_PTE17__ENET0_RXER	0x43
+			MX8ULP_PAD_PTF1__ENET0_RXD0	0x43
+			MX8ULP_PAD_PTE20__ENET0_RXD1	0x43
+			MX8ULP_PAD_PTE16__ENET0_TXEN	0x43
+			MX8ULP_PAD_PTE23__ENET0_TXD0	0x43
+			MX8ULP_PAD_PTE22__ENET0_TXD1	0x43
+			MX8ULP_PAD_PTE19__ENET0_REFCLK	0x10043
+			MX8ULP_PAD_PTF10__ENET0_1588_CLKIN 0x10043
+		>;
+	};
+
+	pinctrl_usbotg0_id: otg0idgrp {
+		fsl,pins = <
+			MX8ULP_PAD_PTF2__USB0_ID	0x10003
+		>;
+	};
+
+	pinctrl_usbotg1_id: otg1idgrp {
+		fsl,pins = <
+			MX8ULP_PAD_PTD23__USB1_ID	0x10003
+		>;
+	};
+};
+
+&usdhc0 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	pinctrl-0 = <&pinctrl_usdhc0>;
+	pinctrl-1 = <&pinctrl_usdhc0>;
+	pinctrl-2 = <&pinctrl_usdhc0>;
+	bus-width = <8>;
+	non-removable;
+	status = "okay";
+};
+
+&usdhc2 {
+	pinctrl-names = "default", "state_100mhz", "state_200mhz", "sleep";
+	pinctrl-0 = <&pinctrl_usdhc2_pte>;
+	pinctrl-1 = <&pinctrl_usdhc2_pte>;
+	pinctrl-2 = <&pinctrl_usdhc2_pte>;
+	pinctrl-3 = <&pinctrl_usdhc2_pte>;
+	mmc-pwrseq = <&usdhc2_pwrseq>;
+	max-frequency = <100000000>;
+	bus-width = <4>;
+	keep-power-in-suspend;
+	non-removable;
+	wakeup-source;
+	status = "okay";
+
+	wifi_wake_host {
+		compatible = "nxp,wifi-wake-host";
+		interrupt-parent = <&gpioe>;
+		interrupts = <7 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-names = "host-wake";
+	};
+};
+
+&lpi2c7 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_lpi2c7>;
+	status = "okay";
+
+	pcal6408: gpio@21 {
+		compatible = "ti,tca6408";
+		reg = <0x21>;
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+};
+
+&flexspi0 {
+	status = "okay";
+
+	flash0: atxp032@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <66000000>;
+	};
+};
+
+&flexspi2 {
+	status = "okay";
+
+	flash1: mt35xu512aba@0 {
+		reg = <0>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		spi-max-frequency = <29000000>;
+		spi-nor,ddr-quad-read-dummy = <8>;
+	};
+};
+
+&fec {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_fec>;
+	phy-mode = "rmii";
+	phy-handle = <&ethphy>;
+	status = "okay";
+
+	phy-reset-gpios = <&pcal6408 4 GPIO_ACTIVE_LOW>;
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy: ethernet-phy@1 {
+			reg = <1>;
+			micrel,led-mode = <1>;
+		};
+	};
+};
+
+&usbotg0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg0_id>;
+	srp-disable;
+	hnp-disable;
+	adp-disable;
+	status = "okay";
+};
+
+&usbphy0 {
+	fsl,tx-d-cal = <88>;
+};
+
+&usbotg1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usbotg1_id>;
+	srp-disable;
+	hnp-disable;
+	adp-disable;
+	status = "okay";
+};
+
+&usbphy1 {
+	fsl,tx-d-cal = <88>;
+};
diff --git a/arch/arm/mach-imx/imx8ulp/Kconfig b/arch/arm/mach-imx/imx8ulp/Kconfig
index 167dbb3fb1..963fc93d34 100644
--- a/arch/arm/mach-imx/imx8ulp/Kconfig
+++ b/arch/arm/mach-imx/imx8ulp/Kconfig
@@ -11,6 +11,13 @@ choice
 	prompt "i.MX8ULP board select"
 	optional
 
+config TARGET_IMX8ULP_EVK
+	bool "imx8ulp_evk"
+	select IMX8ULP
+	select SUPPORT_SPL
+
 endchoice
 
+source "board/freescale/imx8ulp_evk/Kconfig"
+
 endif