Add minimal code to support NXP i.MX7 SABRESD board. Tested to have
working SD card and first Ethernet port as well as being able to boot
upstream Linux kernel (4.12+).
Signed-off-by: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
---
arch/arm/boards/Makefile | 1 +
arch/arm/boards/freescale-mx7-sabresd/Makefile | 2 +
arch/arm/boards/freescale-mx7-sabresd/board.c | 58 +++++++++++++++
.../flash-header-mx7-sabresd.imxcfg | 82 ++++++++++++++++++++++
arch/arm/boards/freescale-mx7-sabresd/lowlevel.c | 46 ++++++++++++
arch/arm/dts/Makefile | 2 +-
arch/arm/dts/imx7d-sdb.dts | 70 ++++++++++++++++++
arch/arm/mach-imx/Kconfig | 12 ++++
images/Makefile.imx | 5 ++
9 files changed, 277 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boards/freescale-mx7-sabresd/Makefile
create mode 100644 arch/arm/boards/freescale-mx7-sabresd/board.c
create mode 100644 arch/arm/boards/freescale-mx7-sabresd/flash-header-mx7-sabresd.imxcfg
create mode 100644 arch/arm/boards/freescale-mx7-sabresd/lowlevel.c
create mode 100644 arch/arm/dts/imx7d-sdb.dts
diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
index 9bbdd684f..295a362bd 100644
--- a/arch/arm/boards/Makefile
+++ b/arch/arm/boards/Makefile
@@ -148,3 +148,4 @@ obj-$(CONFIG_MACH_WARP7) += element14-warp7/
obj-$(CONFIG_MACH_VF610_TWR) += freescale-vf610-twr/
obj-$(CONFIG_MACH_ZII_RDU2) += zii-imx6q-rdu2/
obj-$(CONFIG_MACH_ZII_VF610_DEV) += zii-vf610-dev/
+obj-$(CONFIG_MACH_FREESCALE_MX7_SABRESD) += freescale-mx7-sabresd/
diff --git a/arch/arm/boards/freescale-mx7-sabresd/Makefile b/arch/arm/boards/freescale-mx7-sabresd/Makefile
new file mode 100644
index 000000000..01c7a259e
--- /dev/null
+++ b/arch/arm/boards/freescale-mx7-sabresd/Makefile
@@ -0,0 +1,2 @@
+obj-y += board.o
+lwl-y += lowlevel.o
diff --git a/arch/arm/boards/freescale-mx7-sabresd/board.c b/arch/arm/boards/freescale-mx7-sabresd/board.c
new file mode 100644
index 000000000..37941efdb
--- /dev/null
+++ b/arch/arm/boards/freescale-mx7-sabresd/board.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@xxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <io.h>
+#include <mach/imx7-regs.h>
+#include <linux/phy.h>
+#include <mfd/imx7-iomuxc-gpr.h>
+
+#include <phy-id-list.h>
+
+static int bcm54220_phy_fixup(struct phy_device *dev)
+{
+ phy_write(dev, 0x1e, 0x21);
+ phy_write(dev, 0x1f, 0x7ea8);
+ phy_write(dev, 0x1e, 0x2f);
+ phy_write(dev, 0x1f, 0x71b7);
+
+ return 0;
+}
+
+static void mx7_sabresd_init_fec1(void)
+{
+ void __iomem *gpr = IOMEM(MX7_IOMUXC_GPR_BASE_ADDR);
+ uint32_t gpr1;
+
+ gpr1 = readl(gpr + IOMUXC_GPR1);
+ gpr1 &= ~(IMX7D_GPR1_ENET1_TX_CLK_SEL_MASK |
+ IMX7D_GPR1_ENET1_CLK_DIR_MASK);
+ writel(gpr1, gpr + IOMUXC_GPR1);
+}
+
+static int mx7_sabresd_coredevices_init(void)
+{
+ if (!of_machine_is_compatible("fsl,imx7d-sdb"))
+ return 0;
+
+ mx7_sabresd_init_fec1();
+
+ phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff,
+ bcm54220_phy_fixup);
+
+ return 0;
+}
+coredevice_initcall(mx7_sabresd_coredevices_init);
diff --git a/arch/arm/boards/freescale-mx7-sabresd/flash-header-mx7-sabresd.imxcfg b/arch/arm/boards/freescale-mx7-sabresd/flash-header-mx7-sabresd.imxcfg
new file mode 100644
index 000000000..fd4861153
--- /dev/null
+++ b/arch/arm/boards/freescale-mx7-sabresd/flash-header-mx7-sabresd.imxcfg
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2016 NXP Semiconductors
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * Refer docs/README.imxmage for more details about how-to configure
+ * and create imximage boot image
+ *
+ * The syntax is taken as close as possible with the kwbimage
+ *
+ * Taken from upstream U-Boot git://git.denx.de/u-boot.git, commit
+ * 1a8150d4b16fbafa6f1d207ddb85eda7dc399e2d
+ */
+
+soc imx7
+loadaddr 0x80000000
+dcdofs 0x400
+
+#include <mach/imx7-ddr-regs.h>
+
+wm 32 0x30340004 0x4F400005
+
+wm 32 0x30391000 0x00000002
+
+wm 32 MX7_DDRC_MSTR 0x01040001
+wm 32 MX7_DDRC_DFIUPD0 0x80400003
+wm 32 MX7_DDRC_DFIUPD1 0x00100020
+wm 32 MX7_DDRC_DFIUPD2 0x80100004
+wm 32 MX7_DDRC_RFSHTMG 0x00400046
+wm 32 MX7_DDRC_MP_PCTRL_0 0x00000001
+wm 32 MX7_DDRC_INIT0 0x00020083
+wm 32 MX7_DDRC_INIT1 0x00690000
+wm 32 MX7_DDRC_INIT3 0x09300004
+wm 32 MX7_DDRC_INIT4 0x04080000
+wm 32 MX7_DDRC_INIT5 0x00100004
+wm 32 MX7_DDRC_RANKCTL 0x0000033f
+wm 32 MX7_DDRC_DRAMTMG0 0x09081109
+wm 32 MX7_DDRC_DRAMTMG1 0x0007020d
+wm 32 MX7_DDRC_DRAMTMG2 0x03040407
+wm 32 MX7_DDRC_DRAMTMG3 0x00002006
+wm 32 MX7_DDRC_DRAMTMG4 0x04020205
+wm 32 MX7_DDRC_DRAMTMG5 0x03030202
+wm 32 MX7_DDRC_DRAMTMG8 0x00000803
+wm 32 MX7_DDRC_ZQCTL0 0x00800020
+wm 32 MX7_DDRC_ZQCTL1 0x02000100
+wm 32 MX7_DDRC_DFITMG0 0x02098204
+wm 32 MX7_DDRC_DFITMG1 0x00030303
+wm 32 MX7_DDRC_ADDRMAP0 0x00000016
+wm 32 MX7_DDRC_ADDRMAP1 0x00171717
+wm 32 MX7_DDRC_ADDRMAP5 0x04040404
+wm 32 MX7_DDRC_ADDRMAP6 0x0f040404
+wm 32 MX7_DDRC_ODTCFG 0x06000604
+wm 32 MX7_DDRC_ODTMAP 0x00000001
+
+wm 32 0x30391000 0x00000000
+
+wm 32 MX7_DDR_PHY_PHY_CON0 0x17420f40
+wm 32 MX7_DDR_PHY_PHY_CON1 0x10210100
+wm 32 MX7_DDR_PHY_PHY_CON4 0x00060807
+wm 32 MX7_DDR_PHY_MDLL_CON0 0x1010007e
+wm 32 MX7_DDR_PHY_DRVDS_CON0 0x00000d6e
+wm 32 MX7_DDR_PHY_OFFSET_RD_CON0 0x08080808
+wm 32 MX7_DDR_PHY_OFFSET_WR_CON0 0x08080808
+wm 32 MX7_DDR_PHY_CMD_SDLL_CON0 0x01000010
+wm 32 MX7_DDR_PHY_CMD_SDLL_CON0 0x00000010
+
+wm 32 MX7_DDR_PHY_ZQ_CON0 0x0e407304
+wm 32 MX7_DDR_PHY_ZQ_CON0 0x0e447304
+wm 32 MX7_DDR_PHY_ZQ_CON0 0x0e447306
+
+check 32 while_any_bit_clear MX7_DDR_PHY_ZQ_CON1 0x1
+
+wm 32 MX7_DDR_PHY_ZQ_CON0 0x0e447304
+wm 32 MX7_DDR_PHY_ZQ_CON0 0x0e407304
+
+wm 32 0x30384130 0x00000000
+wm 32 0x30340020 0x00000178
+wm 32 0x30384130 0x00000002
+
+wm 32 MX7_DDR_PHY_LP_CON0 0x0000000f
+
+check 32 while_any_bit_clear MX7_DDRC_STAT 0x1
diff --git a/arch/arm/boards/freescale-mx7-sabresd/lowlevel.c b/arch/arm/boards/freescale-mx7-sabresd/lowlevel.c
new file mode 100644
index 000000000..96ccbbfeb
--- /dev/null
+++ b/arch/arm/boards/freescale-mx7-sabresd/lowlevel.c
@@ -0,0 +1,46 @@
+#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>
+
+extern char __dtb_imx7d_sdb_start[];
+
+static inline void setup_uart(void)
+{
+ void __iomem *iomux = IOMEM(MX7_IOMUXC_BASE_ADDR);
+ void __iomem *ccm = IOMEM(MX7_CCM_BASE_ADDR);
+
+ writel(CCM_CCGR_SETTINGn_NEEDED(0),
+ ccm + CCM_CCGRn_CLR(CCM_CCGR_UART1));
+ writel(CCM_TARGET_ROOTn_ENABLE | UART1_CLK_ROOT__OSC_24M,
+ ccm + CCM_TARGET_ROOTn(UART1_CLK_ROOT));
+ writel(CCM_CCGR_SETTINGn_NEEDED(0),
+ ccm + CCM_CCGRn_SET(CCM_CCGR_UART1));
+
+ mx7_setup_pad(iomux, MX7D_PAD_UART1_TX_DATA__UART1_DCE_TX);
+
+ imx7_uart_setup_ll();
+
+ putc_ll('>');
+}
+
+ENTRY_FUNCTION(start_imx7d_sabresd, r0, r1, r2)
+{
+ void *fdt;
+
+ imx7_cpu_lowlevel_init();
+
+ if (IS_ENABLED(CONFIG_DEBUG_LL))
+ setup_uart();
+
+ fdt = __dtb_imx7d_sdb_start - get_runtime_offset();
+
+ barebox_arm_entry(0x80000000, SZ_1G, fdt);
+}
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d8abe452b..1c1271fd2 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -65,6 +65,7 @@ pbl-dtb-$(CONFIG_MACH_RPI2) += bcm2836-rpi-2.dtb.o
pbl-dtb-$(CONFIG_MACH_SABRELITE) += imx6q-sabrelite.dtb.o imx6dl-sabrelite.dtb.o
pbl-dtb-$(CONFIG_MACH_SABRESD) += imx6q-sabresd.dtb.o
pbl-dtb-$(CONFIG_MACH_FREESCALE_IMX6SX_SABRESDB) += imx6sx-sdb.dtb.o
+pbl-dtb-$(CONFIG_MACH_FREESCALE_MX7_SABRESD) += imx7d-sdb.dtb.o
pbl-dtb-$(CONFIG_MACH_SOCFPGA_ALTERA_SOCDK) += socfpga_cyclone5_socdk.dtb.o
pbl-dtb-$(CONFIG_MACH_SOCFPGA_EBV_SOCRATES) += socfpga_cyclone5_socrates.dtb.o
pbl-dtb-$(CONFIG_MACH_SOCFPGA_REFLEX_ACHILLES) += socfpga_arria10_achilles.dtb.o
@@ -100,5 +101,4 @@ pbl-dtb-$(CONFIG_MACH_ZII_VF610_DEV) += \
pbl-dtb-$(CONFIG_MACH_AT91SAM9X5EK) += at91sam9x5ek.dtb.o
-
clean-files := *.dtb *.dtb.S .*.dtc .*.pre .*.dts *.dtb.lzo
diff --git a/arch/arm/dts/imx7d-sdb.dts b/arch/arm/dts/imx7d-sdb.dts
new file mode 100644
index 000000000..2e48196f9
--- /dev/null
+++ b/arch/arm/dts/imx7d-sdb.dts
@@ -0,0 +1,70 @@
+/*
+ * 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-sdb.dts>
+#include "imx7s.dtsi"
+
+/ {
+ chosen {
+ stdout-path = &uart1;
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x80000000 0x40000000>;
+ };
+
+ /*
+ * This definition is present in the latest kernel DTS file,
+ * and could be removed once Barebox catches up.
+ *
+ * Ditto for pinctrl_spi4
+ */
+ spi4 {
+ compatible = "spi-gpio";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_spi4>;
+ gpio-sck = <&gpio1 13 GPIO_ACTIVE_HIGH>;
+ gpio-mosi = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+ cs-gpios = <&gpio1 12 GPIO_ACTIVE_HIGH>;
+ num-chipselects = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ extended_io: gpio-expander@0 {
+ compatible = "fairchild,74hc595";
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0>;
+ registers-number = <1>;
+ spi-max-frequency = <100000>;
+ };
+ };
+};
+
+&extended_io {
+ q5 {
+ gpio-hog;
+ gpios = <5 GPIO_ACTIVE_HIGH>;
+ output-high;
+ line-name = "enet-rst-b";
+ };
+};
+
+&iomuxc {
+ imx7d-sdb {
+ pinctrl_spi4: spi4grp {
+ fsl,pins = <
+ MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x59
+ MX7D_PAD_GPIO1_IO12__GPIO1_IO12 0x59
+ MX7D_PAD_GPIO1_IO13__GPIO1_IO13 0x59
+ >;
+ };
+ };
+};
diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
index 9ab27b42d..e8089b20b 100644
--- a/arch/arm/mach-imx/Kconfig
+++ b/arch/arm/mach-imx/Kconfig
@@ -396,6 +396,18 @@ config MACH_ZII_VF610_DEV
select ARCH_VF610
select CLKDEV_LOOKUP
+config MACH_FREESCALE_MX7_SABRESD
+ bool "NXP i.MX7 SabreSD Board"
+ select ARCH_IMX7
+ # Nedded to de-assert reset on Ethernet PHY
+ select DRIVER_SPI_GPIO if DRIVER_NET_FEC_IMX
+ select GPIO_74164 if DRIVER_NET_FEC_IMX
+ help
+ Support for NXP i.MX7 SabreSD board - one of the official
+ i.MX7 evaluation boards from NXP.
+
+ https://goo.gl/6EKGdk
+
endif
# ----------------------------------------------------------
diff --git a/images/Makefile.imx b/images/Makefile.imx
index 88d3e5e33..679e9368c 100644
--- a/images/Makefile.imx
+++ b/images/Makefile.imx
@@ -484,3 +484,8 @@ pblx-$(CONFIG_MACH_ZII_VF610_DEV) += start_zii_vf610_dev
CFG_start_zii_vf610_dev.pblx.imximg = $(board)/zii-vf610-dev/flash-header-zii-vf610-dev.imxcfg
FILE_barebox-zii-vf610-dev.img = start_zii_vf610_dev.pblx.imximg
image-$(CONFIG_MACH_ZII_VF610_DEV) += barebox-zii-vf610-dev.img
+
+pblx-$(CONFIG_MACH_FREESCALE_MX7_SABRESD) += start_imx7d_sabresd
+CFG_start_imx7d_sabresd.pblx.imximg = $(board)/freescale-mx7-sabresd/flash-header-mx7-sabresd.imxcfg
+FILE_barebox-freescale-mx7-sabresd.img = start_imx7d_sabresd.pblx.imximg
+image-$(CONFIG_MACH_FREESCALE_MX7_SABRESD) += barebox-freescale-mx7-sabresd.img
--
2.13.3
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