[people/ms/u-boot.git] / board / engicam / imx6ul / imx6ul.c

/*
 * 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
Commit	Line	Data
a5b9f8c8 JT	1	/*
	2	* Copyright (C) 2016 Amarula Solutions B.V.
	3	* Copyright (C) 2016 Engicam S.r.l.
	4	* Author: Jagan Teki <jagan@amarulasolutions.com>
	5	*
	6	* SPDX-License-Identifier: GPL-2.0+
	7	*/
	8
	9	#include <common.h>
52aaddd6	10	#include <mmc.h>
a5b9f8c8 JT	11
	12	#include <asm/io.h>
	13	#include <asm/gpio.h>
	14	#include <linux/sizes.h>
	15
	16	#include <asm/arch/clock.h>
084cbb60	17	#include <asm/arch/crm_regs.h>
a5b9f8c8 JT	18	#include <asm/arch/iomux.h>
	19	#include <asm/arch/mx6-pins.h>
	20	#include <asm/arch/sys_proto.h>
552a848e	21	#include <asm/mach-imx/iomux-v3.h>
a5b9f8c8	22
ac880e77 JT	23	#include "../common/board.h"
ac880e77 JT	24
a5b9f8c8 JT	25	DECLARE_GLOBAL_DATA_PTR;
a5b9f8c8 JT	26
084cbb60 JT	27	#ifdef CONFIG_NAND_MXS
	28
	29	#define GPMI_PAD_CTRL0 (PAD_CTL_PKE \| PAD_CTL_PUE \| PAD_CTL_PUS_100K_UP)
	30	#define GPMI_PAD_CTRL1 (PAD_CTL_DSE_40ohm \| PAD_CTL_SPEED_MED \| \
	31	PAD_CTL_SRE_FAST)
	32	#define GPMI_PAD_CTRL2 (GPMI_PAD_CTRL0 \| GPMI_PAD_CTRL1)
	33
	34	static iomux_v3_cfg_t const nand_pads[] = {
671f458a JT	35	IOMUX_PADS(PAD_NAND_DATA00__RAWNAND_DATA00 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	36	IOMUX_PADS(PAD_NAND_DATA01__RAWNAND_DATA01 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	37	IOMUX_PADS(PAD_NAND_DATA02__RAWNAND_DATA02 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	38	IOMUX_PADS(PAD_NAND_DATA03__RAWNAND_DATA03 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	39	IOMUX_PADS(PAD_NAND_DATA04__RAWNAND_DATA04 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	40	IOMUX_PADS(PAD_NAND_DATA05__RAWNAND_DATA05 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	41	IOMUX_PADS(PAD_NAND_DATA06__RAWNAND_DATA06 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	42	IOMUX_PADS(PAD_NAND_DATA07__RAWNAND_DATA07 \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	43	IOMUX_PADS(PAD_NAND_CLE__RAWNAND_CLE \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	44	IOMUX_PADS(PAD_NAND_ALE__RAWNAND_ALE \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	45	IOMUX_PADS(PAD_NAND_CE0_B__RAWNAND_CE0_B \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	46	IOMUX_PADS(PAD_NAND_RE_B__RAWNAND_RE_B \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	47	IOMUX_PADS(PAD_NAND_WE_B__RAWNAND_WE_B \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	48	IOMUX_PADS(PAD_NAND_WP_B__RAWNAND_WP_B \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
	49	IOMUX_PADS(PAD_NAND_READY_B__RAWNAND_READY_B \| MUX_PAD_CTRL(GPMI_PAD_CTRL2)),
084cbb60 JT	50	};
084cbb60 JT	51
ac880e77	52	void setup_gpmi_nand(void)
084cbb60 JT	53	{
	54	struct mxc_ccm_reg mxc_ccm = (struct mxc_ccm_reg )CCM_BASE_ADDR;
	55
	56	/* config gpmi nand iomux */
671f458a	57	SETUP_IOMUX_PADS(nand_pads);
084cbb60 JT	58
	59	clrbits_le32(&mxc_ccm->CCGR4,
	60	MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK \|
	61	MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK \|
	62	MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK \|
	63	MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK \|
	64	MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
	65
	66	/*
	67	* config gpmi and bch clock to 100 MHz
	68	* bch/gpmi select PLL2 PFD2 400M
	69	* 100M = 400M / 4
	70	*/
	71	clrbits_le32(&mxc_ccm->cscmr1,
	72	MXC_CCM_CSCMR1_BCH_CLK_SEL \|
	73	MXC_CCM_CSCMR1_GPMI_CLK_SEL);
	74	clrsetbits_le32(&mxc_ccm->cscdr1,
	75	MXC_CCM_CSCDR1_BCH_PODF_MASK \|
	76	MXC_CCM_CSCDR1_GPMI_PODF_MASK,
	77	(3 << MXC_CCM_CSCDR1_BCH_PODF_OFFSET) \|
	78	(3 << MXC_CCM_CSCDR1_GPMI_PODF_OFFSET));
	79
	80	/* enable gpmi and bch clock gating */
	81	setbits_le32(&mxc_ccm->CCGR4,
	82	MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK \|
	83	MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK \|
	84	MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK \|
	85	MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK \|
	86	MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
	87
	88	/* enable apbh clock gating */
	89	setbits_le32(&mxc_ccm->CCGR0, MXC_CCM_CCGR0_APBHDMA_MASK);
	90	}
	91	#endif /* CONFIG_NAND_MXS */
52aaddd6 JT	92
	93	#ifdef CONFIG_ENV_IS_IN_MMC
	94	int board_mmc_get_env_dev(int devno)
	95	{
	96	/* dev 0 for SD/eSD, dev 1 for MMC/eMMC */
	97	return (devno == 0) ? 0 : 1;
	98	}
	99	#endif