diff options
Diffstat (limited to 'board/engicam/imx6ul/imx6ul.c')
| -rw-r--r-- | board/engicam/imx6ul/imx6ul.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/board/engicam/imx6ul/imx6ul.c b/board/engicam/imx6ul/imx6ul.c new file mode 100644 index 0000000000..a903a3603b --- /dev/null +++ b/board/engicam/imx6ul/imx6ul.c @@ -0,0 +1,99 @@ +/* + * Copyright (C) 2016 Amarula Solutions B.V. + * Copyright (C) 2016 Engicam S.r.l. + * Author: Jagan Teki <jagan@amarulasolutions.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <mmc.h> + +#include <asm/io.h> +#include <asm/gpio.h> +#include <linux/sizes.h> + +#include <asm/arch/clock.h> +#include <asm/arch/crm_regs.h> +#include <asm/arch/iomux.h> +#include <asm/arch/mx6-pins.h> +#include <asm/arch/sys_proto.h> +#include <asm/mach-imx/iomux-v3.h> + +#include "../common/board.h" + +DECLARE_GLOBAL_DATA_PTR; + +#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[] = { + IOMUX_PADS(PAD_NAND_DATA00__RAWNAND_DATA00 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA01__RAWNAND_DATA01 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA02__RAWNAND_DATA02 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA03__RAWNAND_DATA03 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA04__RAWNAND_DATA04 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA05__RAWNAND_DATA05 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA06__RAWNAND_DATA06 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_DATA07__RAWNAND_DATA07 | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_CLE__RAWNAND_CLE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_ALE__RAWNAND_ALE | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_CE0_B__RAWNAND_CE0_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_RE_B__RAWNAND_RE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_WE_B__RAWNAND_WE_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_WP_B__RAWNAND_WP_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), + IOMUX_PADS(PAD_NAND_READY_B__RAWNAND_READY_B | MUX_PAD_CTRL(GPMI_PAD_CTRL2)), +}; + +void setup_gpmi_nand(void) +{ + struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR; + + /* config gpmi nand iomux */ + SETUP_IOMUX_PADS(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 */ + +#ifdef CONFIG_ENV_IS_IN_MMC +int board_mmc_get_env_dev(int devno) +{ + /* dev 0 for SD/eSD, dev 1 for MMC/eMMC */ + return (devno == 0) ? 0 : 1; +} +#endif |