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https://github.com/brain-hackers/u-boot-brain
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![Yangbo Lu](/assets/img/avatar_default.png)
Converted to use fsl_esdhc_imx for i.MX platforms. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Tested-by: Steffen Dirkwinkel <s.dirkwinkel@beckhoff.com> Reviewed-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Lukasz Majewski <lukma@denx.de> Reviewed-by: Martyn Welch <martyn.welch@collabora.com> Acked-by: Jason Liu <Jason.hui.liu@nxp.com>
338 lines
9.1 KiB
C
338 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* K+P iMX6Q KP_IMX6Q_TPC board configuration
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*
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* Copyright (C) 2018 Lukasz Majewski <lukma@denx.de>
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*/
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#include <common.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/crm_regs.h>
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#include <asm/arch/imx-regs.h>
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#include <asm/arch/iomux.h>
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#include <asm/arch/mx6-ddr.h>
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#include <asm/arch/mx6-pins.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/gpio.h>
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#include <asm/mach-imx/boot_mode.h>
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#include <asm/mach-imx/iomux-v3.h>
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#include <asm/mach-imx/mxc_i2c.h>
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#include <asm/io.h>
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#include <errno.h>
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#include <fuse.h>
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#include <fsl_esdhc_imx.h>
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#include <i2c.h>
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#include <mmc.h>
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#include <spl.h>
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#define UART_PAD_CTRL \
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(PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
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PAD_CTL_SRE_FAST | PAD_CTL_HYS)
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#define USDHC_PAD_CTRL \
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(PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
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PAD_CTL_SRE_FAST | PAD_CTL_HYS)
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DECLARE_GLOBAL_DATA_PTR;
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static void ccgr_init(void)
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{
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struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
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writel(0x00C03F3F, &ccm->CCGR0);
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writel(0x0030FC03, &ccm->CCGR1);
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writel(0x0FFFC000, &ccm->CCGR2);
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writel(0x3FF00000, &ccm->CCGR3);
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writel(0x00FFF300, &ccm->CCGR4);
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writel(0x0F0000C3, &ccm->CCGR5);
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writel(0x000003FF, &ccm->CCGR6);
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}
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/* onboard microSD */
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static iomux_v3_cfg_t const usdhc2_pads[] = {
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IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_NANDF_CS3__GPIO6_IO16 | MUX_PAD_CTRL(NO_PAD_CTRL)),
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};
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/* eMMC */
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static iomux_v3_cfg_t const usdhc4_pads[] = {
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IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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IOMUX_PADS(PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
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};
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/* SD */
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static void setup_iomux_sd(void)
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{
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SETUP_IOMUX_PADS(usdhc2_pads);
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SETUP_IOMUX_PADS(usdhc4_pads);
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}
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/* UART */
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static iomux_v3_cfg_t const uart1_pads[] = {
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IOMUX_PADS(PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
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IOMUX_PADS(PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
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};
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static void setup_iomux_uart(void)
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{
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SETUP_IOMUX_PADS(uart1_pads);
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}
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/* USB */
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static iomux_v3_cfg_t const usb_pads[] = {
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IOMUX_PADS(PAD_GPIO_1__USB_OTG_ID | MUX_PAD_CTRL(NO_PAD_CTRL)),
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IOMUX_PADS(PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(NO_PAD_CTRL)),
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};
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static void setup_iomux_usb(void)
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{
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SETUP_IOMUX_PADS(usb_pads);
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}
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/* DDR3 */
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static const struct mx6dq_iomux_ddr_regs mx6_ddr_ioregs = {
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.dram_sdclk_0 = 0x00000030,
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.dram_sdclk_1 = 0x00000030,
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.dram_cas = 0x00000030,
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.dram_ras = 0x00000030,
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.dram_reset = 0x00000030,
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.dram_sdcke0 = 0x00003000,
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.dram_sdcke1 = 0x00003000,
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.dram_sdba2 = 0x00000000,
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.dram_sdodt0 = 0x00000030,
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.dram_sdodt1 = 0x00000030,
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.dram_sdqs0 = 0x00000018,
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.dram_sdqs1 = 0x00000018,
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.dram_sdqs2 = 0x00000018,
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.dram_sdqs3 = 0x00000018,
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.dram_sdqs4 = 0x00000018,
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.dram_sdqs5 = 0x00000018,
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.dram_sdqs6 = 0x00000018,
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.dram_sdqs7 = 0x00000018,
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.dram_dqm0 = 0x00000018,
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.dram_dqm1 = 0x00000018,
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.dram_dqm2 = 0x00000018,
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.dram_dqm3 = 0x00000018,
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.dram_dqm4 = 0x00000018,
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.dram_dqm5 = 0x00000018,
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.dram_dqm6 = 0x00000018,
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.dram_dqm7 = 0x00000018,
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};
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static const struct mx6dq_iomux_grp_regs mx6_grp_ioregs = {
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.grp_ddr_type = 0x000c0000,
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.grp_ddrmode_ctl = 0x00020000,
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.grp_ddrpke = 0x00000000,
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.grp_addds = 0x00000030,
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.grp_ctlds = 0x00000030,
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.grp_ddrmode = 0x00020000,
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.grp_b0ds = 0x00000018,
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.grp_b1ds = 0x00000018,
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.grp_b2ds = 0x00000018,
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.grp_b3ds = 0x00000018,
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.grp_b4ds = 0x00000018,
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.grp_b5ds = 0x00000018,
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.grp_b6ds = 0x00000018,
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.grp_b7ds = 0x00000018,
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};
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static const struct mx6_mmdc_calibration mx6_4x256mx16_mmdc_calib = {
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.p0_mpwldectrl0 = 0x001F001F,
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.p0_mpwldectrl1 = 0x001F001F,
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.p1_mpwldectrl0 = 0x001F001F,
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.p1_mpwldectrl1 = 0x001F001F,
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.p0_mpdgctrl0 = 0x43270338,
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.p0_mpdgctrl1 = 0x03200314,
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.p1_mpdgctrl0 = 0x431A032F,
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.p1_mpdgctrl1 = 0x03200263,
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.p0_mprddlctl = 0x4B434748,
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.p1_mprddlctl = 0x4445404C,
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.p0_mpwrdlctl = 0x38444542,
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.p1_mpwrdlctl = 0x4935493A,
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};
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/* MT41K256M16 (4Gb density) */
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static const struct mx6_ddr3_cfg mt41k256m16 = {
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.mem_speed = 1600,
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.density = 4,
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.width = 16,
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.banks = 8,
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.rowaddr = 15,
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.coladdr = 10,
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.pagesz = 2,
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.trcd = 1375,
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.trcmin = 4875,
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.trasmin = 3500,
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};
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#ifdef CONFIG_MX6_DDRCAL
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static void spl_dram_print_cal(struct mx6_ddr_sysinfo const *sysinfo)
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{
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struct mx6_mmdc_calibration calibration = {0};
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mmdc_read_calibration(sysinfo, &calibration);
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debug(".p0_mpdgctrl0\t= 0x%08X\n", calibration.p0_mpdgctrl0);
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debug(".p0_mpdgctrl1\t= 0x%08X\n", calibration.p0_mpdgctrl1);
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debug(".p0_mprddlctl\t= 0x%08X\n", calibration.p0_mprddlctl);
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debug(".p0_mpwrdlctl\t= 0x%08X\n", calibration.p0_mpwrdlctl);
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debug(".p0_mpwldectrl0\t= 0x%08X\n", calibration.p0_mpwldectrl0);
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debug(".p0_mpwldectrl1\t= 0x%08X\n", calibration.p0_mpwldectrl1);
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debug(".p1_mpdgctrl0\t= 0x%08X\n", calibration.p1_mpdgctrl0);
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debug(".p1_mpdgctrl1\t= 0x%08X\n", calibration.p1_mpdgctrl1);
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debug(".p1_mprddlctl\t= 0x%08X\n", calibration.p1_mprddlctl);
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debug(".p1_mpwrdlctl\t= 0x%08X\n", calibration.p1_mpwrdlctl);
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debug(".p1_mpwldectrl0\t= 0x%08X\n", calibration.p1_mpwldectrl0);
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debug(".p1_mpwldectrl1\t= 0x%08X\n", calibration.p1_mpwldectrl1);
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}
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static void spl_dram_perform_cal(struct mx6_ddr_sysinfo const *sysinfo)
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{
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int ret;
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/* Perform DDR DRAM calibration */
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udelay(100);
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ret = mmdc_do_write_level_calibration(sysinfo);
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if (ret) {
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printf("DDR: Write level calibration error [%d]\n", ret);
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return;
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}
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ret = mmdc_do_dqs_calibration(sysinfo);
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if (ret) {
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printf("DDR: DQS calibration error [%d]\n", ret);
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return;
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}
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spl_dram_print_cal(sysinfo);
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}
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#endif /* CONFIG_MX6_DDRCAL */
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static void spl_dram_init(void)
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{
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struct mx6_ddr_sysinfo sysinfo = {
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/* width of data bus:0=16,1=32,2=64 */
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.dsize = 2,
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/* config for full 4GB range so that get_mem_size() works */
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.cs_density = 32, /* 32Gb per CS */
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/* single chip select */
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.ncs = 1,
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.cs1_mirror = 0,
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.rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
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.rtt_nom = 2 /*DDR3_RTT_120_OHM*/, /* RTT_Nom = RZQ/2 */
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.walat = 1, /* Write additional latency */
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.ralat = 5, /* Read additional latency */
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.mif3_mode = 3, /* Command prediction working mode */
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.bi_on = 1, /* Bank interleaving enabled */
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.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
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.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
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.pd_fast_exit = 1, /* enable precharge power-down fast exit */
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.ddr_type = DDR_TYPE_DDR3,
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.refsel = 1, /* Refresh cycles at 32KHz */
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.refr = 7, /* 8 refresh commands per refresh cycle */
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};
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mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs);
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mx6_dram_cfg(&sysinfo, &mx6_4x256mx16_mmdc_calib, &mt41k256m16);
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#ifdef CONFIG_MX6_DDRCAL
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spl_dram_perform_cal(&sysinfo);
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#endif
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}
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struct fsl_esdhc_cfg usdhc_cfg[] = {
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{USDHC2_BASE_ADDR},
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{USDHC4_BASE_ADDR},
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};
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#define USDHC2_CD_GPIO IMX_GPIO_NR(1, 4)
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int board_mmc_getcd(struct mmc *mmc)
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{
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struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
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int ret = 0;
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switch (cfg->esdhc_base) {
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case USDHC2_BASE_ADDR:
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ret = !gpio_get_value(USDHC2_CD_GPIO);
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break;
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case USDHC4_BASE_ADDR:
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ret = 1; /* eMMC/uSDHC4 is always present */
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break;
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}
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return ret;
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}
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int board_mmc_init(bd_t *bd)
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{
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struct src *psrc = (struct src *)SRC_BASE_ADDR;
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unsigned int reg = readl(&psrc->sbmr1) >> 11;
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/*
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* Upon reading BOOT_CFG register the following map is done:
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* Bit 11 and 12 of BOOT_CFG register can determine the current
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* mmc port
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* 0x1 SD1
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* 0x3 SD4
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*/
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switch (reg & 0x3) {
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case 0x1:
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SETUP_IOMUX_PADS(usdhc2_pads);
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usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
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usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
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gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
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break;
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case 0x3:
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SETUP_IOMUX_PADS(usdhc4_pads);
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usdhc_cfg[0].esdhc_base = USDHC4_BASE_ADDR;
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usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
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gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
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break;
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}
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return fsl_esdhc_initialize(bd, &usdhc_cfg[0]);
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}
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void board_init_f(ulong dummy)
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{
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/* setup AIPS and disable watchdog */
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arch_cpu_init();
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ccgr_init();
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gpr_init();
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/* setup GP timer */
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timer_init();
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setup_iomux_sd();
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setup_iomux_uart();
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setup_iomux_usb();
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/* UART clocks enabled and gd valid - init serial console */
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preloader_console_init();
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/* DDR initialization */
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spl_dram_init();
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/* Clear the BSS. */
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memset(__bss_start, 0, __bss_end - __bss_start);
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/* load/boot image from boot device */
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board_init_r(NULL, 0);
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}
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