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/*
* Copyright (C) 2007 Sascha Hauer, Pengutronix
* Copyright (C) 2011 Marc Kleine-Budde <mkl@pengutronix.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program 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.
*
*/
#include <environment.h>
#include <partition.h>
#include <common.h>
#include <linux/sizes.h>
#include <gpio.h>
#include <init.h>
#include <fs.h>
#include <io.h>
#include <of.h>
#include <mfd/mc13xxx.h>
#include <i2c/i2c.h>
#include <asm/armlinux.h>
#include <asm/mmu.h>
#include <generated/mach-types.h>
#include <mach/imx53-regs.h>
#include <mach/revision.h>
#include <mach/generic.h>
#include <mach/imx5.h>
#include <mach/bbu.h>
#include <mach/iim.h>
/*
* Revision to be passed to kernel. The kernel provided
* by freescale relies on this.
*
* C --> CPU type
* S --> Silicon revision
* B --> Board rev
*
* 31 20 16 12 8 4 0
* | Cmaj | Cmin | B | Smaj | Smin|
*
* e.g 0x00053120 --> i.MX35, Cpu silicon rev 2.0, Board rev 2
*/
static unsigned int loco_system_rev = 0x00053000;
static void set_silicon_rev( int rev)
{
loco_system_rev = loco_system_rev | (rev & 0xFF);
}
static void set_board_rev(int rev)
{
loco_system_rev = (loco_system_rev & ~(0xF << 8)) | (rev & 0xF) << 8;
}
#define LOCO_FEC_PHY_RST IMX_GPIO_NR(7, 6)
static void loco_fec_reset(void)
{
gpio_direction_output(LOCO_FEC_PHY_RST, 0);
mdelay(1);
gpio_set_value(LOCO_FEC_PHY_RST, 1);
}
#define MX53_LOCO_USB_PWREN IMX_GPIO_NR(7, 8)
static int loco_late_init(void)
{
struct mc13xxx *mc34708;
int rev;
if (!of_machine_is_compatible("fsl,imx53-qsb") &&
!of_machine_is_compatible("fsl,imx53-qsrb"))
return 0;
mc34708 = mc13xxx_get();
if (mc34708) {
unsigned int val;
int ret;
/* get the board revision from fuse */
rev = readl(MX53_IIM_BASE_ADDR + 0x878);
set_board_rev(rev);
printf("MCIMX53-START-R board 1.0 rev %c\n", (rev == 1) ? 'A' : 'B' );
barebox_set_hostname("loco-r");
armlinux_set_revision(loco_system_rev);
/* Set VDDGP to 1.25V for 1GHz on SW1 */
mc13xxx_reg_read(mc34708, MC13892_REG_SW_0, &val);
val = (val & ~SWx_VOLT_MASK_MC34708) | SWx_1_250V_MC34708;
ret = mc13xxx_reg_write(mc34708, MC13892_REG_SW_0, val);
if (ret) {
printf("Writing to REG_SW_0 failed: %d\n", ret);
return ret;
}
/* Set VCC as 1.30V on SW2 */
mc13xxx_reg_read(mc34708, MC13892_REG_SW_1, &val);
val = (val & ~SWx_VOLT_MASK_MC34708) | SWx_1_300V_MC34708;
ret = mc13xxx_reg_write(mc34708, MC13892_REG_SW_1, val);
if (ret) {
printf("Writing to REG_SW_1 failed: %d\n", ret);
return ret;
}
/* Set global reset timer to 4s */
mc13xxx_reg_read(mc34708, MC13892_REG_POWER_CTL2, &val);
val = (val & ~TIMER_MASK_MC34708) | TIMER_4S_MC34708;
ret = mc13xxx_reg_write(mc34708, MC13892_REG_POWER_CTL2, val);
if (ret) {
printf("Writing to REG_POWER_CTL2 failed: %d\n", ret);
return ret;
}
/* Set VUSBSEL and VUSBEN for USB PHY supply*/
mc13xxx_reg_read(mc34708, MC13892_REG_MODE_0, &val);
val |= (VUSBSEL_MC34708 | VUSBEN_MC34708);
ret = mc13xxx_reg_write(mc34708, MC13892_REG_MODE_0, val);
if (ret) {
printf("Writing to REG_MODE_0 failed: %d\n", ret);
return ret;
}
/* Set SWBST to 5V in auto mode */
val = SWBST_AUTO;
ret = mc13xxx_reg_write(mc34708, SWBST_CTRL, val);
if (ret) {
printf("Writing to SWBST_CTRL failed: %d\n", ret);
return ret;
}
} else {
/* so we have a DA9053 based board */
printf("MCIMX53-START board 1.0\n");
barebox_set_hostname("loco");
armlinux_set_revision(loco_system_rev);
}
/* USB PWR enable */
gpio_direction_output(MX53_LOCO_USB_PWREN, 0);
gpio_set_value(MX53_LOCO_USB_PWREN, 1);
loco_fec_reset();
set_silicon_rev(imx_silicon_revision());
armlinux_set_architecture(MACH_TYPE_MX53_LOCO);
imx53_bbu_internal_mmc_register_handler("mmc", "/dev/mmc0",
BBU_HANDLER_FLAG_DEFAULT);
return 0;
}
late_initcall(loco_late_init);
static int loco_postcore_init(void)
{
if (!of_machine_is_compatible("fsl,imx53-qsb") &&
!of_machine_is_compatible("fsl,imx53-qsrb"))
return 0;
imx53_init_lowlevel(1000);
return 0;
}
postcore_initcall(loco_postcore_init);
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