[U-Boot] [PATCH v3 7/9] imx6: isiotmx6ul: Add NAND support

Jagan Teki
2017-01-19T23:02:43Z

Add NAND support for Engicam Is.IoT MX6UL board.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
---
arch/arm/dts/Makefile | 3 +-
arch/arm/dts/imx6ul-isiot-nand.dts | 50 +++++++++++++++++++++++++
board/engicam/isiotmx6ul/MAINTAINERS | 1 +
board/engicam/isiotmx6ul/isiotmx6ul.c | 69 +++++++++++++++++++++++++++++++++++
configs/imx6ul_isiot_nand_defconfig | 46 +++++++++++++++++++++++
include/configs/imx6ul_isiot.h | 25 ++++++++++++-
6 files changed, 192 insertions(+), 2 deletions(-)
create mode 100644 arch/arm/dts/imx6ul-isiot-nand.dts
create mode 100644 configs/imx6ul_isiot_nand_defconfig

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index bd9c0dd..fb2d78a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -303,7 +303,8 @@ dtb-$(CONFIG_MX6) += imx6ull-14x14-evk.dtb \
imx6q-icore.dtb \
imx6q-icore-rqs.dtb \
imx6ul-geam-kit.dtb \
- imx6ul-isiot-mmc.dtb
+ imx6ul-isiot-mmc.dtb \
+ imx6ul-isiot-nand.dtb

dtb-$(CONFIG_MX7) += imx7-colibri.dtb

diff --git a/arch/arm/dts/imx6ul-isiot-nand.dts b/arch/arm/dts/imx6ul-isiot-nand.dts
new file mode 100644
index 0000000..12a3528
--- /dev/null
+++ b/arch/arm/dts/imx6ul-isiot-nand.dts
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2016 Amarula Solutions B.V.
+ * Copyright (C) 2016 Engicam S.r.l.
+ *
+ * This file is dual-licensed: you can use it either under the terms
+ * of the GPL or the X11 license, at your option. Note that this dual
+ * licensing only applies to this file, and not this project as a
+ * whole.
+ *
+ * a) This file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This file 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.
+ *
+ * Or, alternatively
+ *
+ * b) Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use
+ * copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED , WITHOUT WARRANTY OF ANY KIND
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/dts-v1/;
+
+#include "imx6ul-isiot.dtsi"
+
+/ {
+ model = "Engicam Is.IoT MX6UL NAND Starterkit";
+ compatible = "engicam,imx6ul-isiot", "fsl,imx6ul";
+};
diff --git a/board/engicam/isiotmx6ul/MAINTAINERS b/board/engicam/isiotmx6ul/MAINTAINERS
index 0258531..e99e02e 100644
--- a/board/engicam/isiotmx6ul/MAINTAINERS
+++ b/board/engicam/isiotmx6ul/MAINTAINERS
@@ -4,3 +4,4 @@ S: Maintained
F: board/engicam/isiotmx6ul
F: include/configs/imx6ul_isiot.h
F: configs/imx6ul_isiot_mmc_defconfig
+F: configs/imx6ul_isiot_nand_defconfig
diff --git a/board/engicam/isiotmx6ul/isiotmx6ul.c b/board/engicam/isiotmx6ul/isiotmx6ul.c
index c0b18c3..ae3465f 100644
--- a/board/engicam/isiotmx6ul/isiotmx6ul.c
+++ b/board/engicam/isiotmx6ul/isiotmx6ul.c
@@ -37,11 +37,80 @@ int board_early_init_f(void)
return 0;
}

+#ifdef CONFIG_NAND_MXS
+
+#define GPMI_PAD_CTRL0 (PAD_CTL_PKE | PAD_CTL_PUE | PAD_CTL_PUS_100K_UP)
+#define GPMI_PAD_CTRL1 (PAD_CTL_DSE_40ohm | PAD_CTL_SPEED_MED | \
+ PAD_CTL_SRE_FAST)
+#define GPMI_PAD_CTRL2 (GPMI_PAD_CTRL0 | GPMI_PAD_CTRL1)
+
+static iomux_v3_cfg_t const nand_pads[] = {
+ MX6_PAD_NAND_DATA00__RAWNAND_DATA00 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA01__RAWNAND_DATA01 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA02__RAWNAND_DATA02 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA03__RAWNAND_DATA03 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA04__RAWNAND_DATA04 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA05__RAWNAND_DATA05 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA06__RAWNAND_DATA06 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_DATA07__RAWNAND_DATA07 | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_CLE__RAWNAND_CLE | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_ALE__RAWNAND_ALE | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_CE0_B__RAWNAND_CE0_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_RE_B__RAWNAND_RE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_WE_B__RAWNAND_WE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_WP_B__RAWNAND_WP_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+ MX6_PAD_NAND_READY_B__RAWNAND_READY_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2),
+};
+
+static void setup_gpmi_nand(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+ /* config gpmi nand iomux */
+ imx_iomux_v3_setup_multiple_pads(nand_pads, ARRAY_SIZE(nand_pads));
+
+ clrbits_le32(&mxc_ccm->CCGR4,
+ MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
+ MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
+
+ /*
+ * config gpmi and bch clock to 100 MHz
+ * bch/gpmi select PLL2 PFD2 400M
+ * 100M = 400M / 4
+ */
+ clrbits_le32(&mxc_ccm->cscmr1,
+ MXC_CCM_CSCMR1_BCH_CLK_SEL |
+ MXC_CCM_CSCMR1_GPMI_CLK_SEL);
+ clrsetbits_le32(&mxc_ccm->cscdr1,
+ MXC_CCM_CSCDR1_BCH_PODF_MASK |
+ MXC_CCM_CSCDR1_GPMI_PODF_MASK,
+ (3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) |
+ (3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
+
+ /* enable gpmi and bch clock gating */
+ setbits_le32(&mxc_ccm->CCGR4,
+ MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
+ MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
+ MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
+
+ /* enable apbh clock gating */
+ setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
+}
+#endif /* CONFIG_NAND_MXS */
+
int board_init(void)
{
/* Address of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;

+#ifdef CONFIG_NAND_MXS
+ setup_gpmi_nand();
+#endif
return 0;
}

diff --git a/configs/imx6ul_isiot_nand_defconfig b/configs/imx6ul_isiot_nand_defconfig
new file mode 100644
index 0000000..745d10d
--- /dev/null
+++ b/configs/imx6ul_isiot_nand_defconfig
@@ -0,0 +1,46 @@
+CONFIG_ARM=y
+CONFIG_ARCH_MX6=y
+CONFIG_TARGET_MX6UL_ISIOT=y
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,ENV_IS_IN_NAND"
+CONFIG_DEFAULT_FDT_FILE="imx6ul-isiot-nand.dtb"
+CONFIG_DEFAULT_DEVICE_TREE="imx6ul-isiot-nand"
+CONFIG_SYS_PROMPT="isiotmx6ul> "
+CONFIG_SPL=y
+CONFIG_BOOTDELAY=3
+CONFIG_BOARD_EARLY_INIT_F=y
+CONFIG_DISPLAY_CPUINFO=y
+CONFIG_HUSH_PARSER=y
+CONFIG_AUTO_COMPLETE=y
+CONFIG_SYS_MAXARGS=32
+CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
+CONFIG_FIT_SIGNATURE=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_BLK is not set
+# CONFIG_DM_MMC_OPS is not set
+CONFIG_CMD_GPIO=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_CMD_MMC=y
+CONFIG_CMD_NAND=y
+CONFIG_CMD_CACHE=y
+CONFIG_CMD_EXT2=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_EXT4_WRITE=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_FS_GENERIC=y
+CONFIG_OF_LIBFDT=y
+CONFIG_FEC_MXC=y
+CONFIG_MXC_UART=y
+CONFIG_NAND_MXS=y
+CONFIG_IMX_THERMAL=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_SYS_CONSOLE_IS_IN_ENV=y
+CONFIG_SPL_LIBCOMMON_SUPPORT=y
+CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SPL_SERIAL_SUPPORT=y
+CONFIG_SPL_GPIO_SUPPORT=y
+CONFIG_SPL_WATCHDOG_SUPPORT=y
+CONFIG_SPL_DMA_SUPPORT=y
diff --git a/include/configs/imx6ul_isiot.h b/include/configs/imx6ul_isiot.h
index 5a3e05a..b137848 100644
--- a/include/configs/imx6ul_isiot.h
+++ b/include/configs/imx6ul_isiot.h
@@ -27,6 +27,10 @@
/* Environment in MMC */
# if defined(CONFIG_ENV_IS_IN_MMC)
# define CONFIG_ENV_OFFSET 0x100000
+/* Environment in NAND */
+# elif defined(CONFIG_ENV_IS_IN_NAND)
+# define CONFIG_ENV_OFFSET 0x400000
+# define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE
# endif
#endif

@@ -128,6 +132,21 @@
# define CONFIG_SYS_FSL_ESDHC_ADDR 0
#endif

+/* NAND */
+#ifdef CONFIG_NAND_MXS
+# define CONFIG_SYS_MAX_NAND_DEVICE 1
+# define CONFIG_SYS_NAND_BASE 0x40000000
+# define CONFIG_SYS_NAND_5_ADDR_CYCLE
+# define CONFIG_SYS_NAND_ONFI_DETECTION
+# define CONFIG_SYS_NAND_U_BOOT_START CONFIG_SYS_TEXT_BASE
+# define CONFIG_SYS_NAND_U_BOOT_OFFS 0x200000
+
+/* APBH DMA */
+# define CONFIG_APBH_DMA
+# define CONFIG_APBH_DMA_BURST
+# define CONFIG_APBH_DMA_BURST8
+#endif
+
/* Ethernet */
#ifdef CONFIG_FEC_MXC
# define CONFIG_FEC_MXC_PHYADDR 0
@@ -140,7 +159,11 @@

/* SPL */
#ifdef CONFIG_SPL
-# define CONFIG_SPL_MMC_SUPPORT
+# ifdef CONFIG_NAND_MXS
+# define CONFIG_SPL_NAND_SUPPORT
+# else
+# define CONFIG_SPL_MMC_SUPPORT
+# endif

# include "imx6_spl.h"
# ifdef CONFIG_SPL_BUILD
--
1.9.1