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u-boot/board/solidrun/mx6cuboxi/mx6cuboxi.c
Baruch Siach cf8ffbe36f mx6cuboxi: migrate to DM_SERIAL 
Add the needed DT overrides to enable UART in SPL.

Cc: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Tested-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
2022-11-08 17:35:00 +01:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2022 Josua Mayer <josua@solid-run.com>
*
* Copyright (C) 2015 Freescale Semiconductor, Inc.
*
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>
*
* Based on SPL code from Solidrun tree, which is:
* Author: Tungyi Lin <tungyilin1127@gmail.com>
*
* Derived from EDM_CF_IMX6 code by TechNexion,Inc
* Ported to SolidRun microSOM by Rabeeh Khoury <rabeeh@solid-run.com>
*/
#include <common.h>
#include <image.h>
#include <init.h>
#include <log.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux.h>
#include <asm/arch/mx6-pins.h>
#include <asm/arch/mxc_hdmi.h>
#include <env.h>
#include <asm/global_data.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <asm/gpio.h>
#include <asm/mach-imx/iomux-v3.h>
#include <asm/mach-imx/sata.h>
#include <asm/mach-imx/video.h>
#include <mmc.h>
#include <fsl_esdhc_imx.h>
#include <malloc.h>
#include <asm/arch/crm_regs.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <spl.h>
#include <usb.h>
#include <usb/ehci-ci.h>
#include <netdev.h>
#include <phy.h>
DECLARE_GLOBAL_DATA_PTR;
#define UART_PAD_CTRL (PAD_CTL_PUS_100K_UP | \
PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
PAD_CTL_SRE_FAST | PAD_CTL_HYS)
#define USB_H1_VBUS IMX_GPIO_NR(1, 0)
enum board_type {
CUBOXI = 0x00,
HUMMINGBOARD = 0x01,
HUMMINGBOARD2 = 0x02,
UNKNOWN = 0x03,
};
static struct gpio_desc board_detect_desc[5];
#define MEM_STRIDE 0x4000000
static u32 get_ram_size_stride_test(u32 *base, u32 maxsize)
{
volatile u32 *addr;
u32 save[64];
u32 cnt;
u32 size;
int i = 0;
/* First save the data */
for (cnt = 0; cnt < maxsize; cnt += MEM_STRIDE) {
addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
sync ();
save[i++] = *addr;
sync ();
}
/* First write a signature */
* (volatile u32 *)base = 0x12345678;
for (size = MEM_STRIDE; size < maxsize; size += MEM_STRIDE) {
* (volatile u32 *)((u32)base + size) = size;
sync ();
if (* (volatile u32 *)((u32)base) == size) { /* We reached the overlapping address */
break;
}
}
/* Restore the data */
for (cnt = (maxsize - MEM_STRIDE); i > 0; cnt -= MEM_STRIDE) {
addr = (volatile u32 *)((u32)base + cnt); /* pointer arith! */
sync ();
*addr = save[i--];
sync ();
}
return (size);
}
int dram_init(void)
{
u32 max_size = imx_ddr_size();
gd->ram_size = get_ram_size_stride_test((u32 *) CONFIG_SYS_SDRAM_BASE,
(u32)max_size);
return 0;
}
static iomux_v3_cfg_t const uart1_pads[] = {
IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static iomux_v3_cfg_t const usdhc2_pads[] = {
IOMUX_PADS(PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};
static iomux_v3_cfg_t const usdhc3_pads[] = {
IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT4__SD3_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT5__SD3_DATA5 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT6__SD3_DATA6 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_DAT7__SD3_DATA7 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
IOMUX_PADS(PAD_SD3_RST__SD3_RESET | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
};
static iomux_v3_cfg_t const board_detect[] = {
/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09 | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_EIM_DA4__GPIO3_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_SD4_DAT0__GPIO2_IO08 | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static iomux_v3_cfg_t const som_rev_detect[] = {
/* These pins are for sensing if it is a CuBox-i or a HummingBoard */
IOMUX_PADS(PAD_CSI0_DAT14__GPIO6_IO00 | MUX_PAD_CTRL(UART_PAD_CTRL)),
IOMUX_PADS(PAD_CSI0_DAT18__GPIO6_IO04 | MUX_PAD_CTRL(UART_PAD_CTRL)),
};
static void setup_iomux_uart(void)
{
SETUP_IOMUX_PADS(uart1_pads);
}
int board_mmc_get_env_dev(int devno)
{
return devno;
}
#ifdef CONFIG_VIDEO_IPUV3
static void do_enable_hdmi(struct display_info_t const *dev)
{
imx_enable_hdmi_phy();
}
struct display_info_t const displays[] = {
{
.bus = -1,
.addr = 0,
.pixfmt = IPU_PIX_FMT_RGB24,
.detect = detect_hdmi,
.enable = do_enable_hdmi,
.mode = {
.name = "HDMI",
/* 1024x768@60Hz (VESA)*/
.refresh = 60,
.xres = 1024,
.yres = 768,
.pixclock = 15384,
.left_margin = 160,
.right_margin = 24,
.upper_margin = 29,
.lower_margin = 3,
.hsync_len = 136,
.vsync_len = 6,
.sync = FB_SYNC_EXT,
.vmode = FB_VMODE_NONINTERLACED
}
}
};
size_t display_count = ARRAY_SIZE(displays);
static int setup_display(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
int reg;
int timeout = 100000;
enable_ipu_clock();
imx_setup_hdmi();
/* set video pll to 455MHz (24MHz * (37+11/12) / 2) */
setbits_le32(&ccm->analog_pll_video, BM_ANADIG_PLL_VIDEO_POWERDOWN);
reg = readl(&ccm->analog_pll_video);
reg &= ~BM_ANADIG_PLL_VIDEO_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_DIV_SELECT(37);
reg &= ~BM_ANADIG_PLL_VIDEO_POST_DIV_SELECT;
reg |= BF_ANADIG_PLL_VIDEO_POST_DIV_SELECT(1);
writel(reg, &ccm->analog_pll_video);
writel(BF_ANADIG_PLL_VIDEO_NUM_A(11), &ccm->analog_pll_video_num);
writel(BF_ANADIG_PLL_VIDEO_DENOM_B(12), &ccm->analog_pll_video_denom);
reg &= ~BM_ANADIG_PLL_VIDEO_POWERDOWN;
writel(reg, &ccm->analog_pll_video);
while (timeout--)
if (readl(&ccm->analog_pll_video) & BM_ANADIG_PLL_VIDEO_LOCK)
break;
if (timeout < 0) {
printf("Warning: video pll lock timeout!\n");
return -ETIMEDOUT;
}
reg = readl(&ccm->analog_pll_video);
reg |= BM_ANADIG_PLL_VIDEO_ENABLE;
reg &= ~BM_ANADIG_PLL_VIDEO_BYPASS;
writel(reg, &ccm->analog_pll_video);
/* gate ipu1_di0_clk */
clrbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
/* select video_pll clock / 7 for ipu1_di0_clk -> 65MHz pixclock */
reg = readl(&ccm->chsccdr);
reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK |
MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK |
MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
reg |= (2 << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET) |
(6 << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET) |
(0 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
writel(reg, &ccm->chsccdr);
/* enable ipu1_di0_clk */
setbits_le32(&ccm->CCGR3, MXC_CCM_CCGR3_LDB_DI0_MASK);
return 0;
}
#endif /* CONFIG_VIDEO_IPUV3 */
static int setup_fec(void)
{
struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
int ret;
ret = enable_fec_anatop_clock(0, ENET_25MHZ);
if (ret)
return ret;
/* set gpr1[ENET_CLK_SEL] */
setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
return 0;
}
int board_early_init_f(void)
{
setup_iomux_uart();
#ifdef CONFIG_CMD_SATA
setup_sata();
#endif
setup_fec();
return 0;
}
int board_init(void)
{
int ret = 0;
/* address of boot parameters */
gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
#ifdef CONFIG_VIDEO_IPUV3
ret = setup_display();
#endif
return ret;
}
static int request_detect_gpios(void)
{
int node;
int ret;
node = fdt_node_offset_by_compatible(gd->fdt_blob, 0,
"solidrun,hummingboard-detect");
if (node < 0)
return -ENODEV;
ret = gpio_request_list_by_name_nodev(offset_to_ofnode(node),
"detect-gpios", board_detect_desc,
ARRAY_SIZE(board_detect_desc), GPIOD_IS_IN);
return ret;
}
static int free_detect_gpios(void)
{
return gpio_free_list_nodev(board_detect_desc,
ARRAY_SIZE(board_detect_desc));
}
static enum board_type board_type(void)
{
int val1, val2, val3;
SETUP_IOMUX_PADS(board_detect);
/*
* Machine selection -
* Machine val1, val2, val3
* ----------------------------
* HB2 x x 0
* HB rev 3.x x 0 x
* CBi 0 1 x
* HB 1 1 x
*/
gpio_direction_input(IMX_GPIO_NR(2, 8));
val3 = gpio_get_value(IMX_GPIO_NR(2, 8));
if (val3 == 0)
return HUMMINGBOARD2;
gpio_direction_input(IMX_GPIO_NR(3, 4));
val2 = gpio_get_value(IMX_GPIO_NR(3, 4));
if (val2 == 0)
return HUMMINGBOARD;
gpio_direction_input(IMX_GPIO_NR(4, 9));
val1 = gpio_get_value(IMX_GPIO_NR(4, 9));
if (val1 == 0) {
return CUBOXI;
} else {
return HUMMINGBOARD;
}
}
static bool is_rev_15_som(void)
{
int val1, val2;
SETUP_IOMUX_PADS(som_rev_detect);
val1 = gpio_get_value(IMX_GPIO_NR(6, 0));
val2 = gpio_get_value(IMX_GPIO_NR(6, 4));
if (val1 == 1 && val2 == 0)
return true;
return false;
}
static bool has_emmc(void)
{
struct mmc *mmc;
mmc = find_mmc_device(2);
if (!mmc)
return 0;
return (mmc_get_op_cond(mmc, true) < 0) ? 0 : 1;
}
int checkboard(void)
{
request_detect_gpios();
switch (board_type()) {
case CUBOXI:
puts("Board: MX6 Cubox-i");
break;
case HUMMINGBOARD:
puts("Board: MX6 HummingBoard");
break;
case HUMMINGBOARD2:
puts("Board: MX6 HummingBoard2");
break;
case UNKNOWN:
default:
puts("Board: Unknown\n");
goto out;
}
if (is_rev_15_som())
puts(" (som rev 1.5)\n");
else
puts("\n");
free_detect_gpios();
out:
return 0;
}
static int find_ethernet_phy(void)
{
struct mii_dev *bus = NULL;
struct phy_device *phydev = NULL;
int phy_addr = -ENOENT;
#ifdef CONFIG_FEC_MXC
bus = fec_get_miibus(ENET_BASE_ADDR, -1);
if (!bus)
return -ENOENT;
// scan address 0, 1, 4
phydev = phy_find_by_mask(bus, 0b00010011);
if (!phydev) {
free(bus);
return -ENOENT;
}
pr_debug("%s: detected ethernet phy at address %d\n", __func__, phydev->addr);
phy_addr = phydev->addr;
free(phydev);
#endif
return phy_addr;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
/*
* Configure the correct ethernet PHYs nodes in device-tree:
* - AR8035 at addresses 0 or 4: Cubox
* - AR8035 at address 0: HummingBoard, HummingBoard 2
* - ADIN1300 at address 1: since SoM rev 1.9
*/
int ft_board_setup(void *fdt, struct bd_info *bd)
{
int node_phy0, node_phy1, node_phy4;
int ret, phy;
bool enable_phy0 = false, enable_phy1 = false, enable_phy4 = false;
enum board_type board;
// detect device
request_detect_gpios();
board = board_type();
free_detect_gpios();
// detect phy
phy = find_ethernet_phy();
if (phy == 0 || phy == 4) {
enable_phy0 = true;
switch (board) {
case HUMMINGBOARD:
case HUMMINGBOARD2:
/* atheros phy may appear only at address 0 */
break;
case CUBOXI:
case UNKNOWN:
default:
/* atheros phy may appear at either address 0 or 4 */
enable_phy4 = true;
}
} else if (phy == 1) {
enable_phy1 = true;
} else {
pr_err("%s: couldn't detect ethernet phy, not patching dtb!\n", __func__);
return 0;
}
// update all phy nodes status
node_phy0 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@0");
ret = fdt_setprop_string(fdt, node_phy0, "status", enable_phy0 ? "okay" : "disabled");
if (ret < 0 && enable_phy0)
pr_err("%s: failed to enable ethernet phy at address 0 in dtb!\n", __func__);
node_phy1 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@1");
ret = fdt_setprop_string(fdt, node_phy1, "status", enable_phy1 ? "okay" : "disabled");
if (ret < 0 && enable_phy1)
pr_err("%s: failed to enable ethernet phy at address 1 in dtb!\n", __func__);
node_phy4 = fdt_path_offset(fdt, "/soc/bus@2100000/ethernet@2188000/mdio/ethernet-phy@4");
ret = fdt_setprop_string(fdt, node_phy4, "status", enable_phy4 ? "okay" : "disabled");
if (ret < 0 && enable_phy4)
pr_err("%s: failed to enable ethernet phy at address 4 in dtb!\n", __func__);
return 0;
}
#endif
/* Override the default implementation, DT model is not accurate */
int show_board_info(void)
{
return checkboard();
}
int board_late_init(void)
{
#ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
request_detect_gpios();
switch (board_type()) {
case CUBOXI:
env_set("board_name", "CUBOXI");
break;
case HUMMINGBOARD:
env_set("board_name", "HUMMINGBOARD");
break;
case HUMMINGBOARD2:
env_set("board_name", "HUMMINGBOARD2");
break;
case UNKNOWN:
default:
env_set("board_name", "CUBOXI");
}
if (is_mx6dq())
env_set("board_rev", "MX6Q");
else
env_set("board_rev", "MX6DL");
if (is_rev_15_som())
env_set("som_rev", "V15");
if (has_emmc())
env_set("has_emmc", "yes");
free_detect_gpios();
#endif
return 0;
}
/*
* This is not a perfect match. Avoid dependency on the DM GPIO driver needed
* for accurate board detection. Hummingboard2 DT is good enough for U-Boot on
* all Hummingboard/Cubox-i platforms.
*/
int board_fit_config_name_match(const char *name)
{
char tmp_name[36];
snprintf(tmp_name, sizeof(tmp_name), "%s-hummingboard2-emmc-som-v15",
is_mx6dq() ? "imx6q" : "imx6dl");
return strcmp(name, tmp_name);
}
void board_boot_order(u32 *spl_boot_list)
{
struct src *psrc = (struct src *)SRC_BASE_ADDR;
unsigned int reg = readl(&psrc->sbmr1) >> 11;
u32 boot_mode = imx6_src_get_boot_mode() & IMX6_BMODE_MASK;
unsigned int bmode = readl(&src_base->sbmr2);
/* If bmode is serial or USB phy is active, return serial */
if (((bmode >> 24) & 0x03) == 0x01 || is_usbotg_phy_active()) {
spl_boot_list[0] = BOOT_DEVICE_BOARD;
return;
}
switch (boot_mode >> IMX6_BMODE_SHIFT) {
case IMX6_BMODE_SD:
case IMX6_BMODE_ESD:
case IMX6_BMODE_MMC:
case IMX6_BMODE_EMMC:
/*
* Upon reading BOOT_CFG register the following map is done:
* Bit 11 and 12 of BOOT_CFG register can determine the current
* mmc port
* 0x1 SD2
* 0x2 SD3
*/
reg &= 0x3; /* Only care about bottom 2 bits */
switch (reg) {
case 1:
SETUP_IOMUX_PADS(usdhc2_pads);
spl_boot_list[0] = BOOT_DEVICE_MMC1;
break;
case 2:
SETUP_IOMUX_PADS(usdhc3_pads);
spl_boot_list[0] = BOOT_DEVICE_MMC2;
break;
}
break;
default:
/* By default use USB downloader */
spl_boot_list[0] = BOOT_DEVICE_BOARD;
break;
}
/* As a last resort, use serial downloader */
spl_boot_list[1] = BOOT_DEVICE_BOARD;
}
#ifdef CONFIG_SPL_BUILD
#include <asm/arch/mx6-ddr.h>
static const struct mx6dq_iomux_ddr_regs mx6q_ddr_ioregs = {
.dram_sdclk_0 = 0x00020030,
.dram_sdclk_1 = 0x00020030,
.dram_cas = 0x00020030,
.dram_ras = 0x00020030,
.dram_reset = 0x000c0030,
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
.dram_sdba2 = 0x00000000,
.dram_sdodt0 = 0x00003030,
.dram_sdodt1 = 0x00003030,
.dram_sdqs0 = 0x00000030,
.dram_sdqs1 = 0x00000030,
.dram_sdqs2 = 0x00000030,
.dram_sdqs3 = 0x00000030,
.dram_sdqs4 = 0x00000030,
.dram_sdqs5 = 0x00000030,
.dram_sdqs6 = 0x00000030,
.dram_sdqs7 = 0x00000030,
.dram_dqm0 = 0x00020030,
.dram_dqm1 = 0x00020030,
.dram_dqm2 = 0x00020030,
.dram_dqm3 = 0x00020030,
.dram_dqm4 = 0x00020030,
.dram_dqm5 = 0x00020030,
.dram_dqm6 = 0x00020030,
.dram_dqm7 = 0x00020030,
};
static const struct mx6sdl_iomux_ddr_regs mx6dl_ddr_ioregs = {
.dram_sdclk_0 = 0x00000028,
.dram_sdclk_1 = 0x00000028,
.dram_cas = 0x00000028,
.dram_ras = 0x00000028,
.dram_reset = 0x000c0028,
.dram_sdcke0 = 0x00003000,
.dram_sdcke1 = 0x00003000,
.dram_sdba2 = 0x00000000,
.dram_sdodt0 = 0x00003030,
.dram_sdodt1 = 0x00003030,
.dram_sdqs0 = 0x00000028,
.dram_sdqs1 = 0x00000028,
.dram_sdqs2 = 0x00000028,
.dram_sdqs3 = 0x00000028,
.dram_sdqs4 = 0x00000028,
.dram_sdqs5 = 0x00000028,
.dram_sdqs6 = 0x00000028,
.dram_sdqs7 = 0x00000028,
.dram_dqm0 = 0x00000028,
.dram_dqm1 = 0x00000028,
.dram_dqm2 = 0x00000028,
.dram_dqm3 = 0x00000028,
.dram_dqm4 = 0x00000028,
.dram_dqm5 = 0x00000028,
.dram_dqm6 = 0x00000028,
.dram_dqm7 = 0x00000028,
};
static const struct mx6dq_iomux_grp_regs mx6q_grp_ioregs = {
.grp_ddr_type = 0x000C0000,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_addds = 0x00000030,
.grp_ctlds = 0x00000030,
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000030,
.grp_b1ds = 0x00000030,
.grp_b2ds = 0x00000030,
.grp_b3ds = 0x00000030,
.grp_b4ds = 0x00000030,
.grp_b5ds = 0x00000030,
.grp_b6ds = 0x00000030,
.grp_b7ds = 0x00000030,
};
static const struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
.grp_ddr_type = 0x000c0000,
.grp_ddrmode_ctl = 0x00020000,
.grp_ddrpke = 0x00000000,
.grp_addds = 0x00000028,
.grp_ctlds = 0x00000028,
.grp_ddrmode = 0x00020000,
.grp_b0ds = 0x00000028,
.grp_b1ds = 0x00000028,
.grp_b2ds = 0x00000028,
.grp_b3ds = 0x00000028,
.grp_b4ds = 0x00000028,
.grp_b5ds = 0x00000028,
.grp_b6ds = 0x00000028,
.grp_b7ds = 0x00000028,
};
/* microSOM with Dual processor and 1GB memory */
static const struct mx6_mmdc_calibration mx6q_1g_mmcd_calib = {
.p0_mpwldectrl0 = 0x00000000,
.p0_mpwldectrl1 = 0x00000000,
.p1_mpwldectrl0 = 0x00000000,
.p1_mpwldectrl1 = 0x00000000,
.p0_mpdgctrl0 = 0x0314031c,
.p0_mpdgctrl1 = 0x023e0304,
.p1_mpdgctrl0 = 0x03240330,
.p1_mpdgctrl1 = 0x03180260,
.p0_mprddlctl = 0x3630323c,
.p1_mprddlctl = 0x3436283a,
.p0_mpwrdlctl = 0x36344038,
.p1_mpwrdlctl = 0x422a423c,
};
/* microSOM with Quad processor and 2GB memory */
static const struct mx6_mmdc_calibration mx6q_2g_mmcd_calib = {
.p0_mpwldectrl0 = 0x00000000,
.p0_mpwldectrl1 = 0x00000000,
.p1_mpwldectrl0 = 0x00000000,
.p1_mpwldectrl1 = 0x00000000,
.p0_mpdgctrl0 = 0x0314031c,
.p0_mpdgctrl1 = 0x023e0304,
.p1_mpdgctrl0 = 0x03240330,
.p1_mpdgctrl1 = 0x03180260,
.p0_mprddlctl = 0x3630323c,
.p1_mprddlctl = 0x3436283a,
.p0_mpwrdlctl = 0x36344038,
.p1_mpwrdlctl = 0x422a423c,
};
/* microSOM with Solo processor and 512MB memory */
static const struct mx6_mmdc_calibration mx6dl_512m_mmcd_calib = {
.p0_mpwldectrl0 = 0x0045004D,
.p0_mpwldectrl1 = 0x003A0047,
.p0_mpdgctrl0 = 0x023C0224,
.p0_mpdgctrl1 = 0x02000220,
.p0_mprddlctl = 0x44444846,
.p0_mpwrdlctl = 0x32343032,
};
/* microSOM with Dual lite processor and 1GB memory */
static const struct mx6_mmdc_calibration mx6dl_1g_mmcd_calib = {
.p0_mpwldectrl0 = 0x0045004D,
.p0_mpwldectrl1 = 0x003A0047,
.p1_mpwldectrl0 = 0x001F001F,
.p1_mpwldectrl1 = 0x00210035,
.p0_mpdgctrl0 = 0x023C0224,
.p0_mpdgctrl1 = 0x02000220,
.p1_mpdgctrl0 = 0x02200220,
.p1_mpdgctrl1 = 0x02040208,
.p0_mprddlctl = 0x44444846,
.p1_mprddlctl = 0x4042463C,
.p0_mpwrdlctl = 0x32343032,
.p1_mpwrdlctl = 0x36363430,
};
static struct mx6_ddr3_cfg mem_ddr_2g = {
.mem_speed = 1600,
.density = 2,
.width = 16,
.banks = 8,
.rowaddr = 14,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
static struct mx6_ddr3_cfg mem_ddr_4g = {
.mem_speed = 1600,
.density = 4,
.width = 16,
.banks = 8,
.rowaddr = 16,
.coladdr = 10,
.pagesz = 2,
.trcd = 1375,
.trcmin = 4875,
.trasmin = 3500,
};
static void ccgr_init(void)
{
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
writel(0x00C03F3F, &ccm->CCGR0);
writel(0x0030FC03, &ccm->CCGR1);
writel(0x0FFFC000, &ccm->CCGR2);
writel(0x3FF00000, &ccm->CCGR3);
writel(0x00FFF300, &ccm->CCGR4);
writel(0x0F0000C3, &ccm->CCGR5);
writel(0x000003FF, &ccm->CCGR6);
}
static void spl_dram_init(int width)
{
struct mx6_ddr_sysinfo sysinfo = {
/* width of data bus: 0=16, 1=32, 2=64 */
.dsize = width / 32,
/* config for full 4GB range so that get_mem_size() works */
.cs_density = 32, /* 32Gb per CS */
.ncs = 1, /* single chip select */
.cs1_mirror = 0,
.rtt_wr = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Wr = RZQ/4 */
.rtt_nom = 1 /*DDR3_RTT_60_OHM*/, /* RTT_Nom = RZQ/4 */
.walat = 1, /* Write additional latency */
.ralat = 5, /* Read additional latency */
.mif3_mode = 3, /* Command prediction working mode */
.bi_on = 1, /* Bank interleaving enabled */
.sde_to_rst = 0x10, /* 14 cycles, 200us (JEDEC default) */
.rst_to_cke = 0x23, /* 33 cycles, 500us (JEDEC default) */
.ddr_type = DDR_TYPE_DDR3,
.refsel = 1, /* Refresh cycles at 32KHz */
.refr = 7, /* 8 refresh commands per refresh cycle */
};
if (is_mx6dq())
mx6dq_dram_iocfg(width, &mx6q_ddr_ioregs, &mx6q_grp_ioregs);
else
mx6sdl_dram_iocfg(width, &mx6dl_ddr_ioregs, &mx6sdl_grp_ioregs);
if (is_cpu_type(MXC_CPU_MX6D))
mx6_dram_cfg(&sysinfo, &mx6q_1g_mmcd_calib, &mem_ddr_2g);
else if (is_cpu_type(MXC_CPU_MX6Q))
mx6_dram_cfg(&sysinfo, &mx6q_2g_mmcd_calib, &mem_ddr_4g);
else if (is_cpu_type(MXC_CPU_MX6DL))
mx6_dram_cfg(&sysinfo, &mx6dl_1g_mmcd_calib, &mem_ddr_2g);
else if (is_cpu_type(MXC_CPU_MX6SOLO))
mx6_dram_cfg(&sysinfo, &mx6dl_512m_mmcd_calib, &mem_ddr_2g);
}
void board_init_f(ulong dummy)
{
/* setup AIPS and disable watchdog */
arch_cpu_init();
ccgr_init();
gpr_init();
/* iomux and setup of i2c */
board_early_init_f();
/* setup GP timer */
timer_init();
/* Enable device tree and early DM support*/
spl_early_init();
/* UART clocks enabled and gd valid - init serial console */
preloader_console_init();
/* DDR initialization */
if (is_cpu_type(MXC_CPU_MX6SOLO))
spl_dram_init(32);
else
spl_dram_init(64);
/* Clear the BSS. */
memset(__bss_start, 0, __bss_end - __bss_start);
/* load/boot image from boot device */
board_init_r(NULL, 0);
}
#endif
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