imx: Add support for Ronetix's iMX7-CM board

Console boot log:

U-Boot SPL 2021.04-00836-ga6232e065d-dirty (Apr 16 2021 - 15:16:35 +0200)
Trying to boot from MMC1

U-Boot 2021.04-00836-ga6232e065d-dirty (Apr 16 2021 - 15:16:35 +0200)

CPU:   Freescale i.MX7D rev1.3 1000 MHz (running at 792 MHz)
CPU:   Commercial temperature grade (0C to 95C) at 44C
Reset cause: POR
Model: Ronetix iMX7-CM Board
Board: iMX7-CM
DRAM:  512 MiB
PMIC:  PFUZE3000 DEV_ID=0x30 REV_ID=0x11
MMC:   FSL_SDHC: 0, FSL_SDHC: 2
Loading Environment from MMC... OK
In:    serial
Out:   serial
Err:   serial
Net:
Warning: ethernet@30be0000 (eth0) using random MAC address - fe:be:37:01:5a:3f
eth0: ethernet@30be0000
Hit any key to stop autoboot:  0

Signed-off-by: Ilko Iliev <iliev@ronetix.at>

6 files changed, 294 insertions, 0 deletions

diff --git a/board/ronetix/imx7-cm/Kconfig b/board/ronetix/imx7-cm/Kconfig
new file mode 100644
index 0000000000..a4bc48f694
--- /dev/null
+++ b/board/ronetix/imx7-cm/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_IMX7_CM
+
+config SYS_BOARD
+	default "imx7-cm"
+
+config SYS_VENDOR
+	default "ronetix"
+
+config SYS_SOC
+	default "mx7"
+
+config SYS_CONFIG_NAME
+	default "imx7-cm"
+
+endif
diff --git a/board/ronetix/imx7-cm/MAINTAINERS b/board/ronetix/imx7-cm/MAINTAINERS
new file mode 100644
index 0000000000..184c887463
--- /dev/null
+++ b/board/ronetix/imx7-cm/MAINTAINERS
@@ -0,0 +1,6 @@
+i.MX7-CM BOARD
+M:	Ilko Iliev <iliev@ronetix.com>
+S:	Maintained
+F:	board/ronetix/imx7_cm/
+F:	include/configs/imx7_cm.h
+F:	configs/imx7_cm_defconfig
\ No newline at end of file
diff --git a/board/ronetix/imx7-cm/Makefile b/board/ronetix/imx7-cm/Makefile
new file mode 100644
index 0000000000..7e08f238a0
--- /dev/null
+++ b/board/ronetix/imx7-cm/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0+
+# (C) Copyright 2017 NXP Semiconductors
+
+ifdef CONFIG_SPL_BUILD
+obj-y  += spl.o
+else
+obj-y  += imx7-cm.o
+endif
diff --git a/board/ronetix/imx7-cm/README b/board/ronetix/imx7-cm/README
new file mode 100644
index 0000000000..43e8c4fb7a
--- /dev/null
+++ b/board/ronetix/imx7-cm/README
@@ -0,0 +1,11 @@
+U-Boot for the Ronetix i.MX7-CM board
+
+Build U-Boot
+============
+$ make imx7_cm_defconfig
+$ make
+
+Burn the images to a SD card
+============================
+$ sudo dd if=SPL of=/dev/sdX bs=1k seek=1; sync
+$ sudo dd if=u-boot-dtb.img  of=/dev/sdX bs=1k seek=69; sync
diff --git a/board/ronetix/imx7-cm/imx7-cm.c b/board/ronetix/imx7-cm/imx7-cm.c
new file mode 100644
index 0000000000..c23097f047
--- /dev/null
+++ b/board/ronetix/imx7-cm/imx7-cm.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Ronetix GmbH
+ */
+
+#include <init.h>
+#include <net.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx7-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
+#include <asm/gpio.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <asm/io.h>
+#include <common.h>
+#include <i2c.h>
+#include <miiphy.h>
+#include <power/pmic.h>
+#include <power/pfuze3000_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+	return 0;
+}
+
+int power_init_board(void)
+{
+	struct udevice *dev;
+	int ret;
+	unsigned int reg, rev;
+
+	ret = pmic_get("pmic@8", &dev);
+	if (ret == -ENODEV) {
+		puts("No pmic\n");
+		return 0;
+	}
+	if (ret != 0)
+		return ret;
+
+	reg = pmic_reg_read(dev, PFUZE3000_DEVICEID);
+	rev = pmic_reg_read(dev, PFUZE3000_REVID);
+	printf("PMIC:  PFUZE3000 DEV_ID=0x%x REV_ID=0x%x\n", reg, rev);
+
+	/* disable Low Power Mode during standby mode */
+	reg = pmic_reg_read(dev, PFUZE3000_LDOGCTL);
+	reg |= 0x1;
+	pmic_reg_write(dev, PFUZE3000_LDOGCTL, reg);
+
+	/* SW1A/1B mode set to APS/APS */
+	reg = 0x8;
+	pmic_reg_write(dev, PFUZE3000_SW1AMODE, reg);
+	pmic_reg_write(dev, PFUZE3000_SW1BMODE, reg);
+
+	/* SW1A/1B standby voltage set to 1.025V */
+	reg = 0xd;
+	pmic_reg_write(dev, PFUZE3000_SW1ASTBY, reg);
+	pmic_reg_write(dev, PFUZE3000_SW1BSTBY, reg);
+
+	/* decrease SW1B normal voltage to 0.975V */
+	reg = pmic_reg_read(dev, PFUZE3000_SW1BVOLT);
+	reg &= ~0x1f;
+	reg |= PFUZE3000_SW1AB_SETP(975);
+	pmic_reg_write(dev, PFUZE3000_SW1BVOLT, reg);
+
+	return 0;
+}
+
+static int setup_fec(void)
+{
+	return set_clk_enet(ENET_125MHZ);
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	setup_fec();
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: iMX7-CM\n");
+	return 0;
+}
diff --git a/board/ronetix/imx7-cm/spl.c b/board/ronetix/imx7-cm/spl.c
new file mode 100644
index 0000000000..d36f734e49
--- /dev/null
+++ b/board/ronetix/imx7-cm/spl.c
@@ -0,0 +1,156 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Ronetix GmbH
+ *
+ * Author: Ilko Iliev <iliev@ronetix.at>
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <init.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/mx7-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch-mx7/mx7-ddr.h>
+#include <asm/mach-imx/iomux-v3.h>
+#include <asm/gpio.h>
+#include <fsl_esdhc_imx.h>
+#include <spl.h>
+
+static struct ddrc ddrc_regs_val = {
+	.mstr		= 0x01040001,
+	.rfshtmg	= 0x00400046,
+	.init1		= 0x00690000,
+	.init0		= 0x00020083,
+	.init3		= 0x09300004,
+	.init4		= 0x04080000,
+	.init5		= 0x00100004,
+	.rankctl	= 0x0000033F,
+	.dramtmg0	= 0x09081109,
+	.dramtmg1	= 0x0007020d,
+	.dramtmg2	= 0x03040407,
+	.dramtmg3	= 0x00002006,
+	.dramtmg4	= 0x04020205,
+	.dramtmg5	= 0x03030202,
+	.dramtmg8	= 0x00000803,
+	.zqctl0		= 0x00800020,
+	.dfitmg0	= 0x02098204,
+	.dfitmg1	= 0x00030303,
+	.dfiupd0	= 0x80400003,
+	.dfiupd1	= 0x00100020,
+	.dfiupd2	= 0x80100004,
+	.addrmap4	= 0x00000F0F,
+	.odtcfg		= 0x06000604,
+	.odtmap		= 0x00000001,
+	.rfshtmg	= 0x00400046,
+	.dramtmg0	= 0x09081109,
+	.addrmap0	= 0x0000001f,
+	.addrmap1	= 0x00080808,
+	.addrmap4	= 0x00000f0f,
+	.addrmap5	= 0x07070707,
+	.addrmap6	= 0x0f0f0707,
+};
+
+static struct ddrc_mp ddrc_mp_val = {
+	.pctrl_0	= 0x00000001,
+};
+
+static struct ddr_phy ddr_phy_regs_val = {
+	.phy_con0	= 0x17420f40,
+	.phy_con1	= 0x10210100,
+	.phy_con4	= 0x00060807,
+	.mdll_con0	= 0x1010007e,
+	.drvds_con0	= 0x00000d6e,
+	.cmd_sdll_con0	= 0x00000010,
+	.offset_lp_con0	= 0x0000000f,
+	.offset_rd_con0	= 0x0a0a0a0a,
+	.offset_wr_con0	= 0x06060606,
+};
+
+static struct mx7_calibration calib_param = {
+	.num_val	= 5,
+	.values		= {
+		0x0E407304,
+		0x0E447304,
+		0x0E447306,
+		0x0E447304,
+		0x0E447304,
+	},
+};
+
+static void ddr_init(void)
+{
+	mx7_dram_cfg(&ddrc_regs_val, &ddrc_mp_val, &ddr_phy_regs_val, &calib_param);
+}
+
+#define UART_PAD_CTRL		(PAD_CTL_DSE_3P3V_49OHM | \
+				PAD_CTL_PUS_PU100KOHM | PAD_CTL_HYS)
+
+static iomux_v3_cfg_t const uart1_pads[] = {
+	MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX7D_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+void uart1_pads_set(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+
+void board_init_f(ulong dummy)
+{
+	arch_cpu_init();
+
+	uart1_pads_set();
+
+	timer_init();
+
+	preloader_console_init();
+
+	ddr_init();
+
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	board_init_r(NULL, 0);
+}
+
+void reset_cpu(void)
+{
+}
+
+#define USDHC_PAD_CTRL		(PAD_CTL_DSE_3P3V_32OHM | PAD_CTL_SRE_SLOW | \
+				PAD_CTL_HYS | PAD_CTL_PUE | \
+				PAD_CTL_PUS_PU47KOHM)
+
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+	MX7D_PAD_SD1_CLK__SD1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_CMD__SD1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX7D_PAD_SD1_DATA3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+
+	MX7D_PAD_SD1_CD_B__GPIO5_IO0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+void usdhc1_pads_set(void)
+{
+	imx_iomux_v3_setup_multiple_pads(usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+}
+
+static struct fsl_esdhc_cfg usdhc_cfg = {
+	USDHC1_BASE_ADDR, 0, 4
+};
+
+int board_mmc_init(struct bd_info *bis)
+{
+	usdhc1_pads_set();
+	usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+	return fsl_esdhc_initialize(bis, &usdhc_cfg);
+}
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	return 1;
+}