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author | Eric Bénard <eric@eukrea.com> | 2014-02-08 15:16:08 +0100 |
---|---|---|
committer | Sascha Hauer <s.hauer@pengutronix.de> | 2014-02-10 09:13:31 +0100 |
commit | b43dee1a4323aa0d9460a68f5bbdf6e5681f4d30 (patch) | |
tree | 06b0b3990dc95e6548b25df61e6a1794cf54b10e | |
parent | 1c15af075f627c52d1e1e167115baa62dea97837 (diff) | |
download | barebox-b43dee1a4323aa0d9460a68f5bbdf6e5681f4d30.tar.gz barebox-b43dee1a4323aa0d9460a68f5bbdf6e5681f4d30.tar.xz |
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>
-rw-r--r-- | arch/arm/boards/freescale-mx53-qsb/board.c | 45 | ||||
-rw-r--r-- | include/mfd/mc13xxx.h | 11 |
2 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/boards/freescale-mx53-qsb/board.c b/arch/arm/boards/freescale-mx53-qsb/board.c index 69036dafcf..74826e4a5e 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 cba85890c1..1946b1a1c3 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 |