Getting serial console output on new imx7d tqma7 board UART4

Ahmad Fatoum a.fatoum at pengutronix.de
Wed Jul 29 13:22:31 EDT 2020


Hello Lars,

On 7/29/20 6:52 PM, Lars Pedersen wrote:
> I have spent the last couple of days trying to port our bootloader
> from u-boot to barebox 2020.07 but have yet to get any console output.
> Our product is based on tqma7d i.MX7 dual core cpu and uses UART4 for
> serial console and boots from internal eMMC.
> 
> I created a new board inspired from "NXP i.MX7 SabreSD board" and
> tried to only add the basic in the first step to get a console output
> working. The image is built using ptxdist and the imx_v7_defconfig
> where the new board is selected. The image is flashed with "dd
> if=barebox-image of=/dev/mmcblk0 bs=1024 skip=1 seek=1 conv=fsync".
> The device works using u-boot 2020.07 with the same device trees but
> we thought it was time to try out barebox since u-boot felt a little
> bloated :)
> 
> So can anyone be of assistance and tell me what I'm missing?
> 
> /Lars Pedersen
> 
> From: Lars Pedersen <laa at kamstrup.com>
> Date: Tue, 28 Jul 2020 08:57:57 +0000
> Subject: [PATCH] Add kamstrup imx7d dev board
> 
> ---
>  arch/arm/boards/Makefile                           |   1 +
>  arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile     |   2 +
>  arch/arm/boards/kamstrup-imx7d-tqma7d/board.c      |  19 ++
>  .../flash-header-kamstrup-imx7d-tqma7d.imxcfg      |  79 ++++++
>  arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c   |  35 +++
>  arch/arm/dts/Makefile                              |   1 +
>  arch/arm/dts/imx7d-flex-concentrator-mfg.dts       |  11 +
>  arch/arm/mach-imx/Kconfig                          |   5 +
>  drivers/regulator/Kconfig                          |   2 +-
>  dts/src/arm/imx7d-flex-concentrator-mfg.dts        |  25 ++
>  dts/src/arm/imx7d-flex-concentrator.dts            | 313 +++++++++++++++++++++
>  images/Makefile.imx                                |   5 +
>  12 files changed, 497 insertions(+), 1 deletion(-)
>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
>  create mode 100644
> arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
>  create mode 100644 arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c
>  create mode 100644 arch/arm/dts/imx7d-flex-concentrator-mfg.dts
>  create mode 100644 dts/src/arm/imx7d-flex-concentrator-mfg.dts
>  create mode 100644 dts/src/arm/imx7d-flex-concentrator.dts
> 
> diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
> index e9e9163d589b..58bb4cf2adab 100644
> --- a/arch/arm/boards/Makefile
> +++ b/arch/arm/boards/Makefile
> @@ -64,6 +64,7 @@ obj-$(CONFIG_MACH_HIGHBANK)            += highbank/
>  obj-$(CONFIG_MACH_IMX21ADS)            += freescale-mx21-ads/
>  obj-$(CONFIG_MACH_IMX233_OLINUXINO)        += imx233-olinuxino/
>  obj-$(CONFIG_MACH_IMX27ADS)            += freescale-mx27-ads/
> +obj-$(CONFIG_MACH_KAMSTRUP_IMX7D_TQMA7D)    += kamstrup-imx7d-tqma7d/
>  obj-$(CONFIG_MACH_KINDLE3)            += kindle3/
>  obj-$(CONFIG_MACH_KONTRON_SAMX6I)        += kontron-samx6i/
>  obj-$(CONFIG_MACH_LENOVO_IX4_300D)        += lenovo-ix4-300d/
> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> b/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> new file mode 100644
> index 000000000000..01c7a259e9a5
> --- /dev/null
> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/Makefile
> @@ -0,0 +1,2 @@
> +obj-y += board.o
> +lwl-y += lowlevel.o
> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> b/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> new file mode 100644
> index 000000000000..b3ffa851f3e6
> --- /dev/null
> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/board.c
> @@ -0,0 +1,19 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
> +// SPDX-FileCopyrightText: 2020 Kamstrup A/S
> +
> +/* Author: Lars Pedersen <lapeddk at gmail.com> */
> +
> +#include <common.h>
> +#include <init.h>
> +#include <io.h>
> +#include <mach/imx7-regs.h>
> +#include <mfd/imx7-iomuxc-gpr.h>
> +
> +static int kamstrup_mx7_tqma7d_coredevices_init(void)
> +{
> +    if (!of_machine_is_compatible("kam,imx7d-flex-concentrator"))
> +        return 0;
> +
> +    return 0;
> +}
> +coredevice_initcall(kamstrup_mx7_tqma7d_coredevices_init);
> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> b/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> new file mode 100644
> index 000000000000..7656619c1b2e
> --- /dev/null
> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> @@ -0,0 +1,79 @@
> +soc imx7
> +loadaddr 0x80000000
> +dcdofs 0x400
> +
> +#include <mach/imx7-ddr-regs.h>
> +wm 32 0x30340004 0x4F400005 /* IOMUXC_GPR_GPR1 */
> +/* TODO this is copied from imx7sabresd */
> +/* Clear then set bit30 to ensure exit from DDR retention */
> +wm 32 0x30360388 0x40000000
> +wm 32 0x30360384 0x40000000
> +
> +/* TQMa7x DRAM Timing REV0100 */
> +/* DCD Code i.MX7D/S 528 MHz 1 GByte Samsung K4B4G1646D */
> +wm 32 0x30360070 0x0070302C     /*CCM_ANALOG_PLL_DDRx*/
> +wm 32  0x30360090 0x00000000    /*CCM_ANALOG_PLL_NUM*/
> +wm 32  0x30360070 0x0060302C    /*CCM_ANALOG_PLL_DDRx*/
> +check 32 until_any_bit_set 0x30360070 0x80000000
> +wm 32 0x30391000 0x00000002     /*SRC_DDRC_RCR*/
> +
> +wm 32 MX7_DDRC_MSTR 0x01040001   /*DDRC_MSTR*/
> +wm 32 MX7_DDRC_DFIUPD0 0x80400003   /*DDRC_DFIUPD0*/
> +wm 32 MX7_DDRC_DFIUPD1 0x00100020   /*DDRC_DFIUPD1*/
> +wm 32 MX7_DDRC_DFIUPD2 0x80100004   /*DDRC_DFIUPD2*/
> +wm 32 MX7_DDRC_RFSHTMG 0x00200045   /*DDRC_RFSHTMG*/
> +wm 32 MX7_DDRC_MP_PCTRL_0 0x00000001   /*DDRC_MP_PCTRL_0*/
> +wm 32 MX7_DDRC_INIT0 0x00020081   /*DDRC_INIT0*/
> +wm 32 MX7_DDRC_INIT1 0x00680000   /*DDRC_INIT1*/
> +wm 32 MX7_DDRC_INIT3 0x09300004   /*DDRC_INIT3*/
> +wm 32 MX7_DDRC_INIT4 0x00480000   /*DDRC_INIT4*/
> +wm 32 MX7_DDRC_INIT5 0x00100004   /*DDRC_INIT5*/
> +wm 32 MX7_DDRC_RANKCTL 0x0000033F   /*DDRC_RANKCTL*/
> +wm 32 MX7_DDRC_DRAMTMG0 0x090E0809   /*DDRC_DRAMTMG0*/
> +wm 32 MX7_DDRC_DRAMTMG1 0x0007020E   /*DDRC_DRAMTMG1*/
> +wm 32 MX7_DDRC_DRAMTMG2 0x03040407   /*DDRC_DRAMTMG2*/
> +wm 32 MX7_DDRC_DRAMTMG3 0x00002006   /*DDRC_DRAMTMG3*/
> +wm 32 MX7_DDRC_DRAMTMG4 0x04020304   /*DDRC_DRAMTMG4*/
> +wm 32 MX7_DDRC_DRAMTMG5 0x03030202   /*DDRC_DRAMTMG5*/
> +wm 32 MX7_DDRC_DRAMTMG8 0x00000803   /*DDRC_DRAMTMG8*/
> +wm 32 MX7_DDRC_ZQCTL0 0x00800020   /*DDRC_ZQCTL0*/
> +wm 32 MX7_DDRC_DFITMG0 0x02098204   /*DDRC_DFITMG0*/
> +wm 32 MX7_DDRC_DFITMG1 0x00030303   /*DDRC_DFITMG1*/
> +wm 32 MX7_DDRC_ADDRMAP0 0x00000016   /*DDRC_ADDRMAP0*/
> +wm 32 MX7_DDRC_ADDRMAP1 0x00171717   /*DDRC_ADDRMAP1*/
> +wm 32 MX7_DDRC_ADDRMAP4 0x00000F0F   /*DDRC_ADDRMAP4*/
> +wm 32 MX7_DDRC_ADDRMAP5 0x04040404   /*DDRC_ADDRMAP5*/
> +wm 32 MX7_DDRC_ADDRMAP6 0x0F040404   /*DDRC_ADDRMAP6*/
> +wm 32 MX7_DDRC_ODTCFG 0x06000604   /*DDRC_ODTCFG*/
> +wm 32 MX7_DDRC_ODTMAP 0x00000001   /*DDRC_ODTMAP*/
> +wm 32 0x30391000 0x00000000   /*SRC_DDRC_RCR*/
> +wm 32 MX7_DDR_PHY_PHY_CON0 0x17420F40   /*DDR_PHY_PHY_CON0*/
> +wm 32 MX7_DDR_PHY_PHY_CON1 0x10210100   /*DDR_PHY_PHY_CON1*/
> +wm 32 MX7_DDR_PHY_PHY_CON4 0x00060807   /*DDR_PHY_PHY_CON4*/
> +wm 32 MX7_DDR_PHY_MDLL_CON0 0x1010007E   /*DDR_PHY_MDLL_CON0*/
> +wm 32 MX7_DDR_PHY_DRVDS_CON0 0x00000924   /*DDR_PHY_DRVDS_CON0*/
> +/*DDR_PHY_CMD_DESKEW_CON0*/
> +/*DDR_PHY_CMD_DESKEW_CON1*/
> +/*DDR_PHY_CMD_DESKEW_CON2*/
> +/*DDR_PHY_CMD_DESKEW_CON3*/
> +/*DDR_PHY_LVL_CON0*/
> +wm 32 MX7_DDR_PHY_OFFSET_RD_CON0 0x0B0B0B0B   /*DDR_PHY_OFFSET_RD_CON0 */
> +wm 32 MX7_DDR_PHY_OFFSET_WR_CON0 0x06060606   /*DDR_PHY_OFFSET_WR_CON0 */
> +wm 32 MX7_DDR_PHY_CMD_SDLL_CON0 0x01000010   /*DDR_PHY_CMD_SDLL_CON0*/
> +wm 32 MX7_DDR_PHY_CMD_SDLL_CON0 0x00000010   /*DDR_PHY_CMD_SDLL_CON0*/
> +
> +wm 32 MX7_DDR_PHY_ZQ_CON0 0x0C407304   /*DDR_PHY_ZQ_CON0*/
> +wm 32 MX7_DDR_PHY_ZQ_CON0 0x0C447304   /*DDR_PHY_ZQ_CON0*/
> +wm 32 MX7_DDR_PHY_ZQ_CON0 0x0C447306   /*DDR_PHY_ZQ_CON0*/
> +check 32 until_any_bit_set MX7_DDR_PHY_ZQ_CON0 0x1 /*ZQ Calibration
> is finished*/
> +wm 32 MX7_DDR_PHY_ZQ_CON0 0x0C447304   /*DDR_PHY_ZQ_CON0*/
> +wm 32 MX7_DDR_PHY_ZQ_CON0 0x0C407304   /*DDR_PHY_ZQ_CON0*/
> +
> +wm 32 0x30384130 0x00000000 /* CCM_CCGRn */
> +wm 32 0x30340020 0x00000178 /* IOMUXC_GPR_GPR8 */
> +wm 32 0x30384130 0x00000002 /* CCM_CCGRn */
> +wm 32 0x30790018 0x0000000f /* DDR_PHY_LP_CON0 */
> +
> +/* DDRC_STAT */
> +check 32 until_any_bit_set 4 0x307a0004 0x1

You use the same exact DCD table under U-Boot as well?

> +
> diff --git a/arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c
> b/arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c
> new file mode 100644
> index 000000000000..d8c455701edc
> --- /dev/null
> +++ b/arch/arm/boards/kamstrup-imx7d-tqma7d/lowlevel.c
> @@ -0,0 +1,35 @@
> +#include <debug_ll.h>
> +#include <io.h>
> +#include <common.h>
> +#include <linux/sizes.h>
> +#include <mach/generic.h>
> +#include <asm/barebox-arm-head.h>
> +#include <asm/barebox-arm.h>
> +#include <mach/imx7-ccm-regs.h>
> +#include <mach/iomux-mx7.h>
> +#include <mach/debug_ll.h>
> +#include <asm/cache.h>
> +#include <mach/esdctl.h>
> +
> +extern char __dtb_imx7d_flex_concentrator_mfg_start[];

Unrelated to your issue, but you want __dtb_z_ here
(compressed device tree). Check CONFIG_ARM_COMPRESSED_DTB

> +
> +static inline void setup_uart(void)
> +{
> +    imx7_early_setup_uart_clock();
> +
> +    imx7_setup_pad(MX7D_PAD_SAI2_TX_BCLK__UART4_DCE_TX);
> +
> +    imx7_uart_setup_ll();
> +
> +    putc_ll('>');

You've CONFIG_DEBUG_LL=y and you choose the correct UART port
in the i.MX menuconfig option?

> +}
> +
> +ENTRY_FUNCTION(start_kamstrup_imx7d_tqma7d, r0, r1, r2)
> +{
> +    imx7_cpu_lowlevel_init();
> +
> +    if (IS_ENABLED(CONFIG_DEBUG_LL))
> +        setup_uart();
> +
> +    imx7d_barebox_entry(__dtb_imx7d_flex_concentrator_mfg_start +
> get_runtime_offset());
> +}
> diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
> index d61a052310ce..ec3d0f372786 100644
> --- a/arch/arm/dts/Makefile
> +++ b/arch/arm/dts/Makefile
> @@ -23,6 +23,7 @@ lwl-$(CONFIG_MACH_CCMX53) += imx53-ccxmx53.dtb.o
>  lwl-$(CONFIG_MACH_DIGI_CCIMX6ULSBCPRO) += imx6ul-ccimx6ulsbcpro.dtb.o
>  lwl-$(CONFIG_MACH_FREESCALE_MX53_VMX53) += imx53-voipac-bsb.dtb.o
>  lwl-$(CONFIG_MACH_FREESCALE_MX7_SABRESD) += imx7d-sdb.dtb.o
> +lwl-$(CONFIG_MACH_KAMSTRUP_IMX7D_TQMA7D) += imx7d-flex-concentrator-mfg.dtb.o
>  lwl-$(CONFIG_MACH_GK802) += imx6q-gk802.dtb.o
>  lwl-$(CONFIG_MACH_GLOBALSCALE_GURUPLUG) +=
> kirkwood-guruplug-server-plus-bb.dtb.o
>  lwl-$(CONFIG_MACH_GLOBALSCALE_MIRABOX) += armada-370-mirabox-bb.dtb.o
> diff --git a/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> b/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> new file mode 100644
> index 000000000000..746e36a70f4c
> --- /dev/null
> +++ b/arch/arm/dts/imx7d-flex-concentrator-mfg.dts
> @@ -0,0 +1,11 @@
> +/*
> + * The code contained herein is licensed under the GNU General Public
> + * License. You may obtain a copy of the GNU General Public License
> + * Version 2 or later at the following locations:
> + *
> + * http://www.opensource.org/licenses/gpl-license.html
> + * http://www.gnu.org/copyleft/gpl.html
> + */
> +
> +#include <arm/imx7d-flex-concentrator-mfg.dts>
> +
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index 6dd5cb2aca15..d0a9332c7a24 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -492,6 +492,11 @@ config MACH_ZII_IMX7D_DEV
>      select ARCH_IMX7
>      select ARM_USE_COMPRESSED_DTB
> 
> +config MACH_KAMSTRUP_IMX7D_TQMA7D
> +    bool "Kamstrup TQMa7D based devices"
> +    select ARCH_IMX7
> +    select ARM_USE_COMPRESSED_DTB
> +
>  config MACH_PHYTEC_PHYCORE_IMX7
>      bool "Phytec phyCORE i.MX7"
>      select ARCH_IMX7
> diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
> index 1ce057180a01..b0bdc48399e3 100644
> --- a/drivers/regulator/Kconfig
> +++ b/drivers/regulator/Kconfig
> @@ -19,7 +19,7 @@ config REGULATOR_BCM283X
>  config REGULATOR_PFUZE
>      bool "Freescale PFUZE100/200/3000 regulator driver"
>      depends on I2C
> -    depends on ARCH_IMX6 || ARCH_IMX8MQ
> +    depends on ARCH_IMX6 || ARCH_IMX7 || ARCH_IMX8MQ
> 
>  config REGULATOR_STM32_PWR
>      bool "STMicroelectronics STM32 PWR"
> diff --git a/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> b/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> new file mode 100644
> index 000000000000..789f0837058f
> --- /dev/null
> +++ b/dts/src/arm/imx7d-flex-concentrator-mfg.dts
> @@ -0,0 +1,25 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for Kamstrup OMNIA Flex Concentrator in
> + * manufacturing/debugging mode.
> + *
> + * Copyright (C) 2020 Kamstrup A/S
> + * Author: Bruno Thomsen <bruno.thomsen at gmail.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "imx7d-flex-concentrator.dts"
> +
> +/ {
> +    model = "Kamstrup OMNIA Flex Concentrator - Manufacturing";
> +    compatible = "kam,imx7d-flex-concentrator-mfg",
> "kam,imx7d-flex-concentrator", "fsl,imx7d";
> +
> +    chosen {
> +        stdout-path = &uart4;
> +    };
> +};
> +
> +&uart4 {
> +    status = "okay";
> +};
> diff --git a/dts/src/arm/imx7d-flex-concentrator.dts
> b/dts/src/arm/imx7d-flex-concentrator.dts
> new file mode 100644
> index 000000000000..43b331222a47
> --- /dev/null
> +++ b/dts/src/arm/imx7d-flex-concentrator.dts
> @@ -0,0 +1,313 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for Kamstrup OMNIA Flex Concentrator.
> + *
> + * Copyright (C) 2020 Kamstrup A/S
> + * Author: Bruno Thomsen <bruno.thomsen at gmail.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "imx7d-tqma7.dtsi"
> +
> +/* Some I2C devices on TQMa7 SoM are not mounted */
> +/delete-node/ &m24c64;
> +/delete-node/ &ds1339;
> +
> +/ {
> +    model = "Kamstrup OMNIA Flex Concentrator";
> +    compatible = "kam,imx7d-flex-concentrator", "fsl,imx7d";
> +
> +    memory at 80000000 {
> +        device_type = "memory";
> +        /* 1024 MB - TQMa7D board configuration */
> +        reg = <0x80000000 0x40000000>;
> +    };
> +
> +    reg_usb_otg2_vbus: regulator-usb-otg2-vbus {
> +        compatible = "regulator-fixed";
> +        regulator-name = "VBUS_USBOTG2";
> +        regulator-min-microvolt = <5000000>;
> +        regulator-max-microvolt = <5000000>;
> +        gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>;
> +        enable-active-high;
> +    };
> +
> +    reg_vref_1v8: regulator-vref-1v8 {
> +        compatible = "regulator-fixed";
> +        regulator-name = "VCC1V8_REF";
> +        regulator-min-microvolt = <1800000>;
> +        regulator-max-microvolt = <1800000>;
> +        regulator-always-on;
> +        vin-supply = <&sw2_reg>;
> +    };
> +
> +    /*
> +     * Human Machine Interface consists of 4 dual red/green LEDs.
> +     * hmi-a-green is controlled directly by the switch-mode power supply.
> +     * hmi-a-red is not used.
> +     */
> +    gpio-leds {
> +        compatible = "gpio-leds";
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&pinctrl_leds>;
> +
> +        hmi-b-red {
> +            label = "hmi-b:red:provisioning";
> +            gpios = <&gpio3 6 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +
> +        hmi-b-green {
> +            label = "hmi-b:green:operation";
> +            gpios = <&gpio2 28 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +
> +        hmi-c-red {
> +            label = "hmi-c:red:mesh-error";
> +            gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +
> +        hmi-c-green {
> +            label = "hmi-c:green:mesh-activity";
> +            gpios = <&gpio2 30 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +
> +        hmi-d-red {
> +            label = "hmi-d:red:wan-down";
> +            gpios = <&gpio2 31 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +
> +        hmi-d-green {
> +            label = "hmi-d:green:ipsec-up";
> +            gpios = <&gpio4 3 GPIO_ACTIVE_HIGH>;
> +            default-state = "off";
> +        };
> +    };
> +
> +    /*
> +     * Errata e10574 board restart workaround.
> +     */
> +    gpio-restart {
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&pinctrl_restart>;
> +        compatible = "gpio-restart";
> +        gpios = <&gpio7 12 GPIO_ACTIVE_LOW>;
> +        priority = <200>;
> +    };
> +};
> +
> +/*
> + * Analog signals
> + * ADC1_IN0: SMPS - 5V output monitor (voltage divider: 1/0.2806)
> + */
> +&adc1 {
> +    vref-supply = <&reg_vref_1v8>;
> +    status = "okay";
> +};
> +
> +&ecspi2 {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_ecspi2>;
> +    num-chipselects = <1>;
> +    cs-gpios = <&gpio4 23 GPIO_ACTIVE_LOW>;
> +    status = "okay";
> +
> +    pcf2127: rtc at 0 {
> +        compatible = "nxp,pcf2127";
> +        reg = <0>;
> +        spi-max-frequency = <2000000>;
> +    };
> +};
> +
> +&ecspi4 {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_ecspi4>;
> +    num-chipselects = <1>;
> +    cs-gpios = <&gpio3 3 GPIO_ACTIVE_LOW>;
> +    status = "okay";
> +
> +    /*
> +     * ST chip maximum SPI clock frequency is 33 MHz.
> +     *
> +     * TCG specification - Section 6.4.1 Clocking:
> +     * TPM shall support a SPI clock frequency range of 10-24 MHz.
> +     */
> +    st33htph: tpm-tis at 0 {
> +        compatible = "st,st33htpm-spi", "tcg,tpm_tis-spi";
> +        reg = <0>;
> +        spi-max-frequency = <24000000>;
> +    };
> +};
> +
> +&fec1 {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_enet1>;
> +    phy-mode = "rmii";
> +    phy-handle = <&ethphy>;
> +    status = "okay";
> +
> +    mdio {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        /* Micrel KSZ8081RNB */
> +        ethphy: ethernet-phy at 1 {
> +            compatible = "ethernet-phy-id0022.1560",
> "ethernet-phy-ieee802.3-c22";
> +            reg = <1>;
> +            max-speed = <100>;
> +            interrupt-parent = <&gpio1>;
> +            interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
> +            reset-assert-us = <100000>;
> +            reset-deassert-us = <1000000>;
> +            reset-gpios = <&gpio7 15 GPIO_ACTIVE_LOW>;
> +        };
> +    };
> +};
> +
> +/*
> + * Detection signals for internal USB modules.
> + * Used for robust USB plug and play handling such as USB downstream port
> + * power-cycle and USB hub reset in case of misbehaving or crashed modules.
> + *
> + * SMPS - AC input monitor based on zero crossing.
> + * Used for last gasp notification.
> + */
> +&gpio3 {
> +    gpio-line-names = "", "", "", "", "", "", "", "",
> +    "", "", "", "", "smps-ac-monitor", "", "usb-hub-reset", "",
> +    "", "", "", "", "", "", "", "",
> +    "", "module-b-detection", "", "module-a-detection", "", "", "", "";
> +};
> +
> +/*
> + * Tamper IRQ trigger timestamp reading.
> + * Used for sealed cover opened/closed notification.
> + */
> +&gpio5 {
> +    gpio-line-names = "", "", "", "", "", "", "", "",
> +    "", "", "", "", "rtc-tamper-irq", "", "", "",
> +    "", "", "", "", "", "", "", "",
> +    "", "", "", "", "", "", "", "";
> +};
> +
> +&iomuxc {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_misc>;
> +
> +    pinctrl_ecspi2: ecspi2grp {
> +        fsl,pins = <
> +            MX7D_PAD_ECSPI2_MISO__ECSPI2_MISO        0x7c /* X2-15 */
> +            MX7D_PAD_ECSPI2_MOSI__ECSPI2_MOSI        0x74 /* X2-18 */
> +            MX7D_PAD_ECSPI2_SCLK__ECSPI2_SCLK        0x74 /* X2-13 */
> +            MX7D_PAD_ECSPI2_SS0__GPIO4_IO23            0x74 /* X2-20 */
> +            /* RTC - Tamper IRQ */
> +            MX7D_PAD_SD2_CLK__GPIO5_IO12            0x3c /* X1-92 */
> +        >;
> +    };
> +
> +    pinctrl_ecspi4: ecspi4grp {
> +        fsl,pins = <
> +            MX7D_PAD_LCD_CLK__ECSPI4_MISO            0x7c /* X2-72 */
> +            MX7D_PAD_LCD_ENABLE__ECSPI4_MOSI        0x74 /* X2-68 */
> +            MX7D_PAD_LCD_HSYNC__ECSPI4_SCLK            0x74 /* X2-76 */
> +            MX7D_PAD_LCD_VSYNC__GPIO3_IO3            0x74 /* X2-78 */
> +        >;
> +    };
> +
> +    pinctrl_enet1: enet1grp {
> +        fsl,pins = <
> +            MX7D_PAD_GPIO1_IO10__ENET1_MDIO            0x02 /* X2-48 */
> +            MX7D_PAD_GPIO1_IO11__ENET1_MDC            0x00 /* X2-46 */
> +            MX7D_PAD_ENET1_RGMII_TD0__ENET1_RGMII_TD0    0x71 /* X2-53 */
> +            MX7D_PAD_ENET1_RGMII_TD1__ENET1_RGMII_TD1    0x71 /* X2-55 */
> +            MX7D_PAD_ENET1_RGMII_TX_CTL__ENET1_RGMII_TX_CTL    0x71 /* X2-61 */
> +            MX7D_PAD_ENET1_RGMII_RD0__ENET1_RGMII_RD0    0x79 /* X2-56 */
> +            MX7D_PAD_ENET1_RGMII_RD1__ENET1_RGMII_RD1    0x79 /* X2-58 */
> +            MX7D_PAD_ENET1_RGMII_RX_CTL__ENET1_RGMII_RX_CTL    0x79 /* X2-64 */
> +            MX7D_PAD_ENET1_RGMII_RXC__ENET1_RX_ER        0x73 /* X2-52 */
> +            /* PHY reset: SION, 100kPU, SRE_FAST, DSE_X1 */
> +            MX7D_PAD_ENET1_COL__GPIO7_IO15        0x40000070 /* X1-96 */
> +            /* Clock from PHY to MAC */
> +            MX7D_PAD_GPIO1_IO12__CCM_ENET_REF_CLK1    0x40000073 /* X3-4 */
> +            /* PHY interrupt: SION, 100kPU, HYS, SRE_FAST, DSE_X1 */
> +            MX7D_PAD_GPIO1_IO09__GPIO1_IO9        0x40000078 /* X1-80 */
> +        >;
> +    };
> +
> +    pinctrl_leds: ledsgrp {
> +        fsl,pins = <
> +            MX7D_PAD_LCD_DATA01__GPIO3_IO6            0x14 /* X2-82 */
> +            MX7D_PAD_EPDC_BDR0__GPIO2_IO28            0x14 /* X1-82 */
> +            MX7D_PAD_EPDC_BDR1__GPIO2_IO29            0x14 /* X1-84 */
> +            MX7D_PAD_EPDC_PWR_COM__GPIO2_IO30        0x14 /* X1-86 */
> +            MX7D_PAD_EPDC_PWR_STAT__GPIO2_IO31        0x14 /* X1-88 */
> +            MX7D_PAD_UART2_TX_DATA__GPIO4_IO3        0x14 /* X1-90 */
> +        >;
> +    };
> +
> +    pinctrl_misc: miscgrp {
> +        fsl,pins = <
> +            /* Module A detection (low = present) */
> +            MX7D_PAD_LCD_DATA22__GPIO3_IO27            0x7c /* X2-105 */
> +            /* Module B detection (low = present) */
> +            MX7D_PAD_LCD_DATA20__GPIO3_IO25            0x7c /* X2-103 */
> +            /* SMPS - AC input monitor (high = failure) */
> +            MX7D_PAD_LCD_DATA07__GPIO3_IO12            0x7c /* X2-88 */
> +            /* USB - Hub reset */
> +            MX7D_PAD_LCD_DATA09__GPIO3_IO14            0x74 /* X2-92 */
> +        >;
> +    };
> +
> +    pinctrl_restart: restartgrp {
> +        fsl,pins = <
> +            MX7D_PAD_ENET1_TX_CLK__GPIO7_IO12    0x74 /* X1-94 */
> +        >;
> +    };
> +
> +    pinctrl_uart4: uart4grp {
> +        fsl,pins = <
> +            MX7D_PAD_SAI2_TX_SYNC__UART4_DCE_RX    0x7e /* X3-14 */
> +            MX7D_PAD_SAI2_TX_BCLK__UART4_DCE_TX    0x76 /* X3-16 */
> +        >;
> +    };
> +};
> +
> +&iomuxc_lpsr {
> +    pinctrl_usbotg2: usbotg2grp {
> +        fsl,pins = <
> +            MX7D_PAD_LPSR_GPIO1_IO06__USB_OTG2_OC    0x5c /* X3-11 */
> +            MX7D_PAD_LPSR_GPIO1_IO07__GPIO1_IO7    0x59 /* X3-9 */
> +        >;
> +    };
> +
> +};
> +
> +&uart4 {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_uart4>;
> +    assigned-clocks = <&clks IMX7D_UART4_ROOT_SRC>;
> +    assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>;
> +};
> +
> +&usbotg2 {
> +    pinctrl-names = "default";
> +    pinctrl-0 = <&pinctrl_usbotg2>;
> +    vbus-supply = <&reg_usb_otg2_vbus>;
> +    srp-disable;
> +    hnp-disable;
> +    adp-disable;
> +    dr_mode = "host";
> +    status = "okay";
> +};
> +
> +/*
> + * External watchdog feature provided by pcf2127.
> + */
> +&wdog1 {
> +    status = "disabled";
> +};
> diff --git a/images/Makefile.imx b/images/Makefile.imx
> index 765702f26deb..cbbefd5c085b 100644
> --- a/images/Makefile.imx
> +++ b/images/Makefile.imx
> @@ -364,6 +364,11 @@ CFG_start_zii_imx7d_dev.pblb.imximg =
> $(board)/zii-imx7d-dev/flash-header-zii-im
>  FILE_barebox-zii-imx7d-dev.img = start_zii_imx7d_dev.pblb.imximg
>  image-$(CONFIG_MACH_ZII_IMX7D_DEV) += barebox-zii-imx7d-dev.img
> 
> +pblb-$(CONFIG_MACH_KAMSTRUP_IMX7D_TQMA7D) += start_kamstrup_imx7d_tqma7d
> +CFG_start_kamstrup_imx7d_tqma7d.pblb.imximg =
> $(board)/kamstrup-imx7d-tqma7d/flash-header-kamstrup-imx7d-tqma7d.imxcfg
> +FILE_barebox-kamstrup-imx7d-tqma7d.img =
> start_kamstrup_imx7d_tqma7d.pblb.imximg
> +image-$(CONFIG_MACH_KAMSTRUP_IMX7D_TQMA7D) += barebox-kamstrup-imx7d-tqma7d.img
> +
>  # ----------------------- i.MX8mm based boards --------------------------
>  pblb-$(CONFIG_MACH_NXP_IMX8MM_EVK) += start_nxp_imx8mm_evk
>  CFG_start_nxp_imx8mm_evk.pblb.imximg =
> $(board)/nxp-imx8mm-evk/flash-header-imx8mm-evk.imxcfg
> 
> _______________________________________________
> barebox mailing list
> barebox at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

-- 
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31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
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