ARM: dts: imx6ull-dhcom: Add DHCOM based PicoITX board

Add DT for DH PicoITX unit, which is a bare-bones carrier board for
the DHCOM. The board has ethernet port, USB, CAN, LED and a custom
board-to-board expansion connector. For this board a DHCOM i.MX6ULL
SoM configuration without WiFi/BT is used. The interface is used
for the SD card instead. Make this adjustment by using a separate DT
include file.

Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 707680e..e0395da 100644 (file)
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -742,6 +742,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
        imx6ull-colibri-wifi-iris.dtb \
        imx6ull-colibri-wifi-iris-v2.dtb \
        imx6ull-dhcom-pdk2.dtb \
+       imx6ull-dhcom-picoitx.dtb \
        imx6ull-jozacp.dtb \
        imx6ull-kontron-bl.dtb \
        imx6ull-myir-mys-6ulx-eval.dtb \

diff --git a/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts b/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts
new file mode 100644 (file)
index 0000000..e4cc222
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2023 DH electronics GmbH
+ *
+ * DHCOM iMX6ULL variant:
+ * DHCM-iMX6ULL-C080-R051-F0409-SPI-E2-CAN2-SD-RTC-ADC-I-01D2
+ * DHCOR PCB number: 578-200 or newer
+ * DHCOM PCB number: 579-200 or newer
+ * PicoITX PCB number: 487-600 or newer
+ */
+/dts-v1/;
+
+#include "imx6ull-dhcom-som.dtsi"
+#include "imx6ull-dhcom-som-cfg-sdcard.dtsi"
+
+/ {
+       model = "DH electronics i.MX6ULL DHCOM on PicoITX";
+       compatible = "dh,imx6ull-dhcom-picoitx", "dh,imx6ull-dhcom-som",
+                    "dh,imx6ull-dhcor-som", "fsl,imx6ull";
+
+       led {
+               compatible = "gpio-leds";
+
+               led-0 {
+                       color = <LED_COLOR_ID_YELLOW>;
+                       default-state = "off";
+                       function = LED_FUNCTION_INDICATOR;
+                       gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* GPIO I */
+               };
+       };
+};
+
+&fec1 {
+       phy-handle = <&mdio1_phy0>;
+
+       mdio {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               mdio1_phy0: ethernet-phy@0 {
+                       compatible = "ethernet-phy-id0007.c0f0", /* SMSC LAN8710Ai */
+                                    "ethernet-phy-ieee802.3-c22";
+                       reg = <0>;
+                       clock-names = "rmii-ref";
+                       clocks = <&clks IMX6UL_CLK_ENET_REF>;
+                       interrupt-parent = <&gpio5>;
+                       interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+                       pinctrl-0 = <&pinctrl_fec1_phy &pinctrl_snvs_fec1_phy>;
+                       pinctrl-names = "default";
+                       reset-assert-us = <500>;
+                       reset-deassert-us = <500>;
+                       reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
+                       smsc,disable-energy-detect; /* Make plugin detection reliable */
+               };
+       };
+};
+
+&fec2 {
+       status = "disabled";
+};
+
+&gpio4 {
+       gpio-line-names =
+               "", "", "", "",
+               "", "", "", "",
+               "", "", "", "",
+               "", "", "", "",
+               "", "PicoITX-HW2", "PicoITX-HW1", "DHCOM-M",
+               "PicoITX-HW0", "DHCOM-U", "DHCOM-T", "DHCOM-S",
+               "DHCOM-R", "DHCOM-Q", "DHCOM-P", "DHCOM-O",
+               "DHCOM-N", "", "", "";
+};
+
+&gpio5 {
+       gpio-line-names =
+               "DHCOM-A", "DHCOM-B", "PicoITX-In2", "PicoITX-Out2",
+               "PicoITX-In1", "", "", "PicoITX-Out1",
+               "DHCOM-G", "DHCOM-H", "", "",
+               "", "", "", "",
+               "", "", "", "",
+               "", "", "", "",
+               "", "", "", "",
+               "", "", "", "";
+};
+
+&iomuxc {
+       pinctrl_fec1: fec1-grp {
+               fsl,pins = <
+                       MX6UL_PAD_GPIO1_IO07__ENET1_MDC         0x1b0b0
+                       MX6UL_PAD_GPIO1_IO06__ENET1_MDIO        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      0x1b010
+                       MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00 0x1b010
+                       MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01 0x1b010
+                       MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  0x4001b010
+               >;
+       };
+};

diff --git a/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi b/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi
new file mode 100644 (file)
index 0000000..040421f
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2023 DH electronics GmbH
+ */
+
+/*
+ * Special SoM configuration: SD card
+ *
+ * Enabled:  Micro SD card on module or
+ *           external SD card via DHCOM depends on hardware variant
+ *           GPIO H and GPIO I will be available
+ *           DHCOM UART2 will be available
+ * Disabled: WiFi and BT
+ */
+
+/*
+ * To use usdhc1 as SD card, the WiFi node must be deleted.
+ * BT is also not available, so remove BT from the UART node.
+ */
+/delete-node/ &brcmf;
+/delete-node/ &bluetooth;
+
+/ {
+       aliases {
+               mmc1 = &usdhc1;
+               serial0 = &uart1;
+               serial1 = &uart2;
+               serial2 = &uart3;
+               serial3 = &uart4;
+               serial4 = &uart5;
+               serial5 = &uart6;
+       };
+
+       reg_sd1_vmmc: regulator-sd1-vmmc {
+               compatible = "regulator-fixed";
+               regulator-max-microvolt = <3300000>;
+               regulator-min-microvolt = <3300000>;
+               regulator-name = "VSD_3V3";
+       };
+};
+
+/* Micro SD card on module or external SD card via DHCOM */
+&usdhc1 {
+       /delete-property/ #address-cells;
+       /delete-property/ #size-cells;
+       /delete-property/ keep-power-in-suspend;
+       /delete-property/ mmc-pwrseq;
+       /delete-property/ non-removable;
+       /delete-property/ wakeup-source;
+       cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+       no-1-8-v;
+       pinctrl-0 = <&pinctrl_usdhc1>;
+       pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+       pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+       pinctrl-names = "default", "state_100mhz", "state_200mhz";
+       vmmc-supply = <&reg_sd1_vmmc>;
+       status = "okay";
+};
+
+&iomuxc {
+       pinctrl_usdhc1: usdhc1-grp {
+               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       0x120b0 /* SD1 CD */
+               >;
+       };
+
+       pinctrl_usdhc1_100mhz: usdhc1-100mhz-grp {
+               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
+                       MX6UL_PAD_UART1_RTS_B__GPIO1_IO19       0x120b0 /* SD1 CD */
+
+               >;
+       };
+
+       pinctrl_usdhc1_200mhz: usdhc1-200mhz-grp {
+               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
+                       MX6UL_PAD_UART1_RTS_B__GPIO1_IO19       0x120b0 /* SD1 CD */
+               >;
+       };
+};