- 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@xxxxxxxxxx>
---
arch/arm/boards/freescale-mx53-qsb/board.c | 45 ++++++++++++++++++++++++++++++
include/mfd/mc13xxx.h | 11 ++++++++
2 files changed, 56 insertions(+)
diff --git a/arch/arm/boards/freescale-mx53-qsb/board.c b/arch/arm/boards/freescale-mx53-qsb/board.c
index 69036da..74826e4 100644
--- a/arch/arm/boards/freescale-mx53-qsb/board.c
+++ b/arch/arm/boards/freescale-mx53-qsb/board.c
@@ -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");
diff --git a/include/mfd/mc13xxx.h b/include/mfd/mc13xxx.h
index cba8589..1946b1a 100644
--- a/include/mfd/mc13xxx.h
+++ b/include/mfd/mc13xxx.h
@@ -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
--
1.8.3.1
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