[PATCH v4 4/4] board: Add support for Conclusive KSTR-SAMA5D27
Artur Rojek
artur at conclusive.pl
Mon Oct 9 16:41:51 CEST 2023
Introduce support for Conclusive KSTR-SAMA5D27 Single Board Computer.
Co-developed-by: Jakub Klama <jakub at conclusive.pl>
Signed-off-by: Jakub Klama <jakub at conclusive.pl>
Co-developed-by: Marcin Jabrzyk <marcin at conclusive.pl>
Signed-off-by: Marcin Jabrzyk <marcin at conclusive.pl>
Signed-off-by: Artur Rojek <artur at conclusive.pl>
---
v4: - utilize EVT_SETTINGS_R in order to read MAC and serial number from
EEPROM
v3: - use CONFIG_ID_EEPROM to read serial number
- as side-effect of using CONFIG_ID_EEPROM, KSTR-SAMA5D27 now also
correctly uses EEPROM embedded MAC addresses (overlooked in v1-v2)
- use CONFIG_DISPLAY_BOARDINFO_LATE for printing the board model and
serial number, and provide the required checkboard() call
- drop CONFIG_BOARD_LATE_INIT, as not needed anymore
- defconfig cleanup
v2: - remove redundant license text from at91-kstr-sama5d27.dts
- when defining properties in .dts, reference nodes by labels
- drop nodes for usb0 and pmic, as these aren't used by drivers
- switch i2c to flexcom driver and make the necessary dts changes
- sort includes in at91-kstr-sama5d27.dts alphabetically
arch/arm/dts/Makefile | 3 +
arch/arm/dts/at91-kstr-sama5d27.dts | 131 ++++++++++
arch/arm/mach-at91/Kconfig | 12 +
board/conclusive/kstr-sama5d27/Kconfig | 15 ++
board/conclusive/kstr-sama5d27/MAINTAINERS | 8 +
board/conclusive/kstr-sama5d27/Makefile | 5 +
.../conclusive/kstr-sama5d27/kstr-sama5d27.c | 239 ++++++++++++++++++
configs/kstr_sama5d27_defconfig | 73 ++++++
include/configs/kstr-sama5d27.h | 15 ++
9 files changed, 501 insertions(+)
create mode 100644 arch/arm/dts/at91-kstr-sama5d27.dts
create mode 100644 board/conclusive/kstr-sama5d27/Kconfig
create mode 100644 board/conclusive/kstr-sama5d27/MAINTAINERS
create mode 100644 board/conclusive/kstr-sama5d27/Makefile
create mode 100644 board/conclusive/kstr-sama5d27/kstr-sama5d27.c
create mode 100644 configs/kstr_sama5d27_defconfig
create mode 100644 include/configs/kstr-sama5d27.h
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index bde2176ec7f6..c0f3525ed4d3 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1198,6 +1198,9 @@ dtb-$(CONFIG_TARGET_SAMA5D27_SOM1_EK) += \
dtb-$(CONFIG_TARGET_SAMA5D27_WLSOM1_EK) += \
at91-sama5d27_wlsom1_ek.dtb
+dtb-$(CONFIG_TARGET_KSTR_SAMA5D27) += \
+ at91-kstr-sama5d27.dtb
+
dtb-$(CONFIG_TARGET_SAMA5D2_ICP) += \
at91-sama5d2_icp.dtb
diff --git a/arch/arm/dts/at91-kstr-sama5d27.dts b/arch/arm/dts/at91-kstr-sama5d27.dts
new file mode 100644
index 000000000000..fe9ec7e5bbc3
--- /dev/null
+++ b/arch/arm/dts/at91-kstr-sama5d27.dts
@@ -0,0 +1,131 @@
+// SPDX-License-Identifier: GPL-2.0+ OR X11
+/*
+ * at91-kstr-sama5d27.dts - Device Tree file for Conclusive KSTR-SAMA5D27 board
+ *
+ * Copyright (C) 2019-2023 Conclusive Engineering Sp. z o. o.
+ *
+ */
+/dts-v1/;
+
+#include "sama5d2.dtsi"
+#include "sama5d2-pinfunc.h"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/mfd/atmel-flexcom.h>
+
+/ {
+ model = "Conclusive KSTR-SAMA5D27";
+ compatible = "conclusive,kstr-sama5d27", "atmel,sama5d2", "atmel,sama5";
+
+ chosen {
+ bootph-all;
+ stdout-path = &uart1;
+ };
+};
+
+&main_xtal {
+ clock-frequency = <12000000>;
+};
+
+&sdmmc0 {
+ bus-width = <4>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_sdmmc0_cmd_dat_default &pinctrl_sdmmc0_ck_cd_default>;
+ status = "okay";
+ bootph-all;
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_uart1_default>;
+ status = "okay";
+ bootph-all;
+};
+
+&macb0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_macb0_rmii &pinctrl_macb0_phy_irq>;
+ phy-mode = "rmii";
+ status = "okay";
+
+ ethernet-phy at 0 {
+ reg = <0x0>;
+ reset-gpios = <&pioA 44 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&flx4 {
+ atmel,flexcom-mode = <ATMEL_FLEXCOM_MODE_TWI>;
+ status = "okay";
+};
+
+&i2c6 {
+ clock-frequency = <100000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_flx4_i2c>;
+ status = "okay";
+
+ eeprom: eeprom at 50 {
+ compatible = "microchip,24c32", "atmel,24c32";
+ reg = <0x50>;
+ read-only;
+ pagesize = <32>;
+ status = "okay";
+ };
+};
+
+&pioA {
+ pinctrl {
+ pinctrl_uart1_default: uart1_default {
+ pinmux = <PIN_PD2__URXD1>,
+ <PIN_PD3__UTXD1>;
+ bias-disable;
+ bootph-all;
+ };
+
+ pinctrl_macb0_phy_irq: macb0_phy_irq {
+ pinmux = <PIN_PB13__GPIO>;
+ bias-disable;
+ bootph-all;
+ };
+
+ pinctrl_macb0_rmii: macb0_rmii {
+ pinmux = <PIN_PB14__GTXCK>,
+ <PIN_PB15__GTXEN>,
+ <PIN_PB16__GRXDV>,
+ <PIN_PB17__GRXER>,
+ <PIN_PB18__GRX0>,
+ <PIN_PB19__GRX1>,
+ <PIN_PB20__GTX0>,
+ <PIN_PB21__GTX1>,
+ <PIN_PB22__GMDC>,
+ <PIN_PB23__GMDIO>;
+ bias-disable;
+ bootph-all;
+ };
+
+ pinctrl_sdmmc0_cmd_dat_default: sdmmc0_cmd_dat_default {
+ pinmux = <PIN_PA1__SDMMC0_CMD>,
+ <PIN_PA2__SDMMC0_DAT0>,
+ <PIN_PA3__SDMMC0_DAT1>,
+ <PIN_PA4__SDMMC0_DAT2>,
+ <PIN_PA5__SDMMC0_DAT3>;
+ bias-pull-up;
+ bootph-all;
+ };
+
+ pinctrl_sdmmc0_ck_cd_default: sdmmc0_ck_cd_default {
+ pinmux = <PIN_PA0__SDMMC0_CK>,
+ <PIN_PA11__SDMMC0_VDDSEL>,
+ <PIN_PA13__SDMMC0_CD>;
+ bias-disable;
+ bootph-all;
+ };
+
+ pinctrl_flx4_i2c: flx4_i2c {
+ pinmux = <PIN_PC28__FLEXCOM4_IO0>,
+ <PIN_PC29__FLEXCOM4_IO1>;
+ bias-disable;
+ };
+ };
+};
diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index 4c65fc0dbd25..37ef2d691d65 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -204,6 +204,17 @@ config TARGET_SAMA5D27_WLSOM1_EK
processor-based SAMA5D2 MPU with 2 Gbit LPDDR2-SDRAM
in a single package.
+config TARGET_KSTR_SAMA5D27
+ bool "Conclusive KSTR-SAMA5D27 board"
+ select BOARD_EARLY_INIT_F
+ select SAMA5D2
+ help
+ The KSTR-SAMA5D27 embeds SAMA5D27 SoC, together with
+ 256 MiB SDRAM, 10/100 Mbit/s Ethernet, 96 Mbit/s Wi-Fi b/g/n,
+ Bluetooth 4.1 LE, USB OTG controller w/ type-C USB connector
+ and stackable GPIO headers in an all-in-one SBC form factor:
+ https://conclusive.pl/products/kstr-sama5d27-sbc/
+
config TARGET_SAMA5D2_ICP
bool "SAMA5D2 Industrial Connectivity Platform (ICP)"
select SAMA5D2
@@ -364,6 +375,7 @@ source "board/atmel/sama5d4_xplained/Kconfig"
source "board/atmel/sama5d4ek/Kconfig"
source "board/bluewater/gurnard/Kconfig"
source "board/calao/usb_a9263/Kconfig"
+source "board/conclusive/kstr-sama5d27/Kconfig"
source "board/egnite/ethernut5/Kconfig"
source "board/esd/meesc/Kconfig"
source "board/gardena/smart-gateway-at91sam/Kconfig"
diff --git a/board/conclusive/kstr-sama5d27/Kconfig b/board/conclusive/kstr-sama5d27/Kconfig
new file mode 100644
index 000000000000..572551cfda98
--- /dev/null
+++ b/board/conclusive/kstr-sama5d27/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_KSTR_SAMA5D27
+
+config SYS_BOARD
+ default "kstr-sama5d27"
+
+config SYS_VENDOR
+ default "conclusive"
+
+config SYS_SOC
+ default "at91"
+
+config SYS_CONFIG_NAME
+ default "kstr-sama5d27"
+
+endif
diff --git a/board/conclusive/kstr-sama5d27/MAINTAINERS b/board/conclusive/kstr-sama5d27/MAINTAINERS
new file mode 100644
index 000000000000..cb1635cdd280
--- /dev/null
+++ b/board/conclusive/kstr-sama5d27/MAINTAINERS
@@ -0,0 +1,8 @@
+CONCLUSIVE KSTR-SAMA5D27 BOARD
+M: Jakub Klama <jakub at conclusive.pl>
+M: Artur Rojek <artur at conclusive.pl>
+S: Maintained
+F: board/conclusive/kstr-sama5d27
+F: include/configs/kstr-sama5d27.h
+F: configs/kstr_sama5d27_defconfig
+F: arch/arm/dts/at91-kstr-sama5d27.dts
diff --git a/board/conclusive/kstr-sama5d27/Makefile b/board/conclusive/kstr-sama5d27/Makefile
new file mode 100644
index 000000000000..edf7d1c93441
--- /dev/null
+++ b/board/conclusive/kstr-sama5d27/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2019-2023 Conclusive Engineering Sp. z o. o.
+
+obj-y += kstr-sama5d27.o
diff --git a/board/conclusive/kstr-sama5d27/kstr-sama5d27.c b/board/conclusive/kstr-sama5d27/kstr-sama5d27.c
new file mode 100644
index 000000000000..1b765b113743
--- /dev/null
+++ b/board/conclusive/kstr-sama5d27/kstr-sama5d27.c
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * kstr-sama5d27.c - Board init file for Conclusive KSTR-SAMA5D27 board
+ * Copyright (C) 2021-2023 Conclusive Engineering Sp. z o. o.
+ */
+
+#include <common.h>
+#include <debug_uart.h>
+#include <init.h>
+#include <env.h>
+#include <fdt_support.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/at91_common.h>
+#include <asm/arch/atmel_pio4.h>
+#include <asm/arch/atmel_mpddrc.h>
+#include <asm/arch/atmel_sdhci.h>
+#include <asm/arch/clk.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/sama5d2.h>
+#include <linux/delay.h>
+
+#ifdef CONFIG_USB_GADGET_ATMEL_USBA
+#include <asm/arch/atmel_usba_udc.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_DEBUG_UART_BOARD_INIT
+static void board_uart1_hw_init(void)
+{
+ /* URXD1 */
+ atmel_pio4_set_a_periph(AT91_PIO_PORTD, 2, ATMEL_PIO_PUEN_MASK);
+ /* UTXD1 */
+ atmel_pio4_set_a_periph(AT91_PIO_PORTD, 3, 0);
+ at91_periph_clk_enable(ATMEL_ID_UART1);
+}
+
+void board_debug_uart_init(void)
+{
+ board_uart1_hw_init();
+}
+#endif
+
+void board_lan8720a_init(void)
+{
+ /* LAN8720A_nRST */
+ atmel_pio4_set_pio_output(AT91_PIO_PORTB, 12, 0);
+ /*
+ * Force 0 on RXER/PHYAD0. LAN8720A chipset will latch with address 0 on
+ * MDIO bus.
+ */
+ atmel_pio4_set_pio_output(AT91_PIO_PORTB, 17, 0);
+ /* Minimal delay of reset signal is 25 ms */
+ mdelay(30);
+ /* LAN8720A_nRST */
+ atmel_pio4_set_pio_output(AT91_PIO_PORTB, 12, 1);
+}
+
+void board_usba_init(void)
+{
+#ifdef CONFIG_USB_GADGET_ATMEL_USBA
+ /* USB device peripheral initialization: sama5d2_devices.c */
+ at91_udp_hw_init();
+ /* USB device controller drivers/usb/gadget/atmel_usba_udc.c */
+ usba_udc_probe(&pdata);
+#endif
+}
+
+#ifdef CONFIG_BOARD_EARLY_INIT_F
+int board_early_init_f(void)
+{
+#ifdef CONFIG_DEBUG_UART
+ debug_uart_init();
+#endif
+
+ return 0;
+}
+#endif
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+ char *wlanaddr = env_get("eth1addr");
+
+ if (wlanaddr)
+ do_fixup_by_compat(blob, "brcm,bcm4329-fmac", "local-mac-address",
+ wlanaddr, strlen(wlanaddr), 1);
+ else
+ printf("Not setting WIFI mac address. Check if EEPROM TLV is correctly set up.\n");
+
+ return 0;
+}
+
+int board_init(void)
+{
+ /* address of boot parameters */
+ gd->bd->bi_boot_params = CFG_SYS_SDRAM_BASE + 0x100;
+
+ board_usba_init();
+ board_lan8720a_init();
+
+ return 0;
+}
+
+static int settings_r(void)
+{
+ mac_read_from_eeprom();
+ serial_read_from_eeprom(0);
+
+ return 0;
+}
+EVENT_SPY_SIMPLE(EVT_SETTINGS_R, settings_r);
+
+#if defined(CONFIG_DISPLAY_BOARDINFO_LATE)
+int checkboard(void)
+{
+ const char *serial_number;
+
+ serial_number = env_get("serial#");
+ if (!serial_number)
+ printf("Warning: unknown serial number.\n");
+ else
+ printf("S/N: %s\n", serial_number);
+
+ return 0;
+}
+#endif
+
+#ifdef CONFIG_MISC_INIT_R
+int misc_init_r(void)
+{
+ return 0;
+}
+#endif
+
+int dram_init(void)
+{
+ gd->ram_size = get_ram_size((void *)CFG_SYS_SDRAM_BASE,
+ CFG_SYS_SDRAM_SIZE);
+ return 0;
+}
+
+/* SPL */
+#ifdef CONFIG_SPL_BUILD
+void spl_board_init(void)
+{
+}
+
+static void ddrc_conf(struct atmel_mpddrc_config *ddrc)
+{
+ ddrc->md = (ATMEL_MPDDRC_MD_DBW_16_BITS | ATMEL_MPDDRC_MD_DDR2_SDRAM);
+
+ ddrc->cr = (ATMEL_MPDDRC_CR_NC_COL_10 |
+ ATMEL_MPDDRC_CR_NR_ROW_13 |
+ ATMEL_MPDDRC_CR_CAS_DDR_CAS3 |
+ ATMEL_MPDDRC_CR_DIC_DS |
+ ATMEL_MPDDRC_CR_ZQ_LONG |
+ ATMEL_MPDDRC_CR_NB_8BANKS |
+ ATMEL_MPDDRC_CR_DECOD_INTERLEAVED |
+ ATMEL_MPDDRC_CR_UNAL_SUPPORTED);
+
+ ddrc->rtr = 0x511;
+
+ ddrc->tpr0 = ((7 << ATMEL_MPDDRC_TPR0_TRAS_OFFSET) |
+ (3 << ATMEL_MPDDRC_TPR0_TRCD_OFFSET) |
+ (3 << ATMEL_MPDDRC_TPR0_TWR_OFFSET) |
+ (9 << ATMEL_MPDDRC_TPR0_TRC_OFFSET) |
+ (3 << ATMEL_MPDDRC_TPR0_TRP_OFFSET) |
+ (4 << ATMEL_MPDDRC_TPR0_TRRD_OFFSET) |
+ (4 << ATMEL_MPDDRC_TPR0_TWTR_OFFSET) |
+ (2 << ATMEL_MPDDRC_TPR0_TMRD_OFFSET));
+
+ ddrc->tpr1 = ((22 << ATMEL_MPDDRC_TPR1_TRFC_OFFSET) |
+ (23 << ATMEL_MPDDRC_TPR1_TXSNR_OFFSET) |
+ (200 << ATMEL_MPDDRC_TPR1_TXSRD_OFFSET) |
+ (3 << ATMEL_MPDDRC_TPR1_TXP_OFFSET));
+
+ ddrc->tpr2 = ((2 << ATMEL_MPDDRC_TPR2_TXARD_OFFSET) |
+ (8 << ATMEL_MPDDRC_TPR2_TXARDS_OFFSET) |
+ (4 << ATMEL_MPDDRC_TPR2_TRPA_OFFSET) |
+ (4 << ATMEL_MPDDRC_TPR2_TRTP_OFFSET) |
+ (8 << ATMEL_MPDDRC_TPR2_TFAW_OFFSET));
+}
+
+void mem_init(void)
+{
+ struct at91_pmc *pmc = (struct at91_pmc *)ATMEL_BASE_PMC;
+ struct atmel_mpddr *mpddrc = (struct atmel_mpddr *)ATMEL_BASE_MPDDRC;
+ struct atmel_mpddrc_config ddrc_config;
+ u32 reg;
+
+ ddrc_conf(&ddrc_config);
+
+ at91_periph_clk_enable(ATMEL_ID_MPDDRC);
+ writel(AT91_PMC_DDR, &pmc->scer);
+
+ reg = readl(&mpddrc->io_calibr);
+ reg &= ~ATMEL_MPDDRC_IO_CALIBR_RDIV;
+ reg |= ATMEL_MPDDRC_IO_CALIBR_DDR3_RZQ_55;
+ reg &= ~ATMEL_MPDDRC_IO_CALIBR_TZQIO;
+ reg |= ATMEL_MPDDRC_IO_CALIBR_TZQIO_(101);
+ writel(reg, &mpddrc->io_calibr);
+
+ writel(ATMEL_MPDDRC_RD_DATA_PATH_SHIFT_ONE_CYCLE,
+ &mpddrc->rd_data_path);
+
+ ddr3_init(ATMEL_BASE_MPDDRC, ATMEL_BASE_DDRCS, &ddrc_config);
+
+ writel(0x3, &mpddrc->cal_mr4);
+ writel(64, &mpddrc->tim_cal);
+}
+
+void at91_pmc_init(void)
+{
+ u32 tmp;
+
+ /*
+ * While coming from the ROM code, we run on PLLA @ 492 MHz / 164 MHz,
+ * so we need to slow down and configure MCKR accordingly.
+ * This is why we have a special flavor of the switching function.
+ */
+ tmp = AT91_PMC_MCKR_PLLADIV_2 |
+ AT91_PMC_MCKR_MDIV_3 |
+ AT91_PMC_MCKR_CSS_MAIN;
+ at91_mck_init_down(tmp);
+
+ tmp = AT91_PMC_PLLAR_29 |
+ AT91_PMC_PLLXR_PLLCOUNT(0x3f) |
+ AT91_PMC_PLLXR_MUL(40) |
+ AT91_PMC_PLLXR_DIV(1);
+ at91_plla_init(tmp);
+
+ tmp = AT91_PMC_MCKR_H32MXDIV |
+ AT91_PMC_MCKR_PLLADIV_2 |
+ AT91_PMC_MCKR_MDIV_3 |
+ AT91_PMC_MCKR_CSS_PLLA;
+ at91_mck_init(tmp);
+}
+#endif
diff --git a/configs/kstr_sama5d27_defconfig b/configs/kstr_sama5d27_defconfig
new file mode 100644
index 000000000000..cc1419b05ba1
--- /dev/null
+++ b/configs/kstr_sama5d27_defconfig
@@ -0,0 +1,73 @@
+CONFIG_ARM=y
+CONFIG_ARCH_AT91=y
+CONFIG_TEXT_BASE=0x26f00000
+CONFIG_TARGET_KSTR_SAMA5D27=y
+CONFIG_NR_DRAM_BANKS=1
+CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y
+CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x20003ee0
+CONFIG_DM_GPIO=y
+CONFIG_DEFAULT_DEVICE_TREE="at91-kstr-sama5d27"
+CONFIG_OF_LIBFDT_OVERLAY=y
+CONFIG_DM_RESET=y
+CONFIG_SYS_MONITOR_LEN=524288
+CONFIG_SYS_LOAD_ADDR=0x24000000
+CONFIG_FIT=y
+CONFIG_OF_BOARD_SETUP=y
+CONFIG_DISTRO_DEFAULTS=y
+CONFIG_SD_BOOT=y
+CONFIG_BOOTDELAY=3
+CONFIG_USE_BOOTARGS=y
+CONFIG_BOOTARGS="console=ttyS0,115200 earlyprintk root=/dev/mmcblk0p2 rw rootwait"
+# CONFIG_USE_BOOTCOMMAND is not set
+# CONFIG_DISPLAY_BOARDINFO is not set
+CONFIG_DISPLAY_BOARDINFO_LATE=y
+CONFIG_MISC_INIT_R=y
+CONFIG_CMD_TLV_EEPROM=y
+CONFIG_CMD_DM=y
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_I2C=y
+# CONFIG_CMD_LOADS is not set
+CONFIG_CMD_MMC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+# CONFIG_ISO_PARTITION is not set
+CONFIG_OF_CONTROL=y
+CONFIG_ENV_OVERWRITE=y
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_CLK=y
+CONFIG_CLK_AT91=y
+CONFIG_AT91_UTMI=y
+CONFIG_AT91_H32MX=y
+CONFIG_AT91_GENERIC_CLK=y
+CONFIG_ATMEL_PIO4=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_AT91=y
+CONFIG_I2C_EEPROM=y
+CONFIG_MICROCHIP_FLEXCOM=y
+CONFIG_MMC_IO_VOLTAGE=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_SDMA=y
+CONFIG_MMC_SDHCI_ATMEL=y
+CONFIG_PHY_MICREL=y
+CONFIG_MACB=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_AT91PIO4=y
+CONFIG_RESET_AT91=y
+CONFIG_DM_SERIAL=y
+CONFIG_ATMEL_USART=y
+CONFIG_SYSRESET=y
+CONFIG_SYSRESET_AT91=y
+CONFIG_TEE=y
+CONFIG_OPTEE=y
+CONFIG_TIMER=y
+CONFIG_ATMEL_PIT_TIMER=y
+CONFIG_USB=y
+CONFIG_USB_EHCI_HCD=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_VENDOR_NUM=0x16c0
+CONFIG_USB_GADGET_PRODUCT_NUM=0x03e9
+CONFIG_USB_GADGET_ATMEL_USBA=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+# CONFIG_EFI_LOADER is not set
diff --git a/include/configs/kstr-sama5d27.h b/include/configs/kstr-sama5d27.h
new file mode 100644
index 000000000000..772a073ba209
--- /dev/null
+++ b/include/configs/kstr-sama5d27.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2021-2023 Conclusive Engineering Sp. z o. o.
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include "at91-sama5_common.h"
+
+/* SDRAM */
+#define CFG_SYS_SDRAM_BASE 0x20000000
+#define CFG_SYS_SDRAM_SIZE 0x10000000
+
+#endif
--
2.42.0
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