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ARM: mx53-qsrb: fix USB 

- configure the MC34708 properly so that USB can work
(the sequence is taken from u-boot)
- add the required defines to the mc13xxx include file

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Eric Bénard 2014-02-08 15:16:08 +01:00 committed by Sascha Hauer
parent 1c15af075f
commit b43dee1a43
2 changed files with 56 additions and 0 deletions
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45
arch/arm/boards/freescale-mx53-qsb/board.c
View File

@ -93,11 +93,56 @@ static int loco_late_init(void)
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' );
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");

11
include/mfd/mc13xxx.h
View File

@ -152,6 +152,17 @@
#define MC13783_SW1B_SOFTSTART (1 << 17)
#define MC13783_SW_PLL_FACTOR(x) (((x) - 28) << 19)
/* MC34708 Definitions */
#define SWx_VOLT_MASK_MC34708 0x3F
#define SWx_1_250V_MC34708 0x30
#define SWx_1_300V_MC34708 0x34
#define TIMER_MASK_MC34708 0x300
#define TIMER_4S_MC34708 0x100
#define VUSBSEL_MC34708 (1 << 2)
#define VUSBEN_MC34708 (1 << 3)
#define SWBST_CTRL 31
#define SWBST_AUTO 0x8
struct mc13xxx;
#ifdef CONFIG_MFD_MC13XXX