diff options
| author | Dmitry Lifshitz <lifshitz@compulab.co.il> | 2014-01-12 15:22:55 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2014-02-28 14:09:14 -0800 |
| commit | b62d91e5e1abe59f50b5861d26fdecec0e38eecf (patch) | |
| tree | 277e76299301269fe097ad05086217966e318c0c /arch/arm/mach-omap2 | |
| parent | fb45105a838f8806f908a9fdf1269355b5daac56 (diff) | |
| download | linux-b62d91e5e1abe59f50b5861d26fdecec0e38eecf.tar.bz2 | |
ARM: OMAP2+: make reset pulse for sbc-t3x usb hubs
sbc-t3x boards features two external USB ports on SB-T35 baseboard.
The baseboardi USB hub reset signal should be de-asserted to make
those ports functional.
sbc-t3517 features additional (assembled on CoM) USB hub which also
requires reset signal handling.
Add quirks code to handle proper reset pulse signal.
Signed-off-by: Dmitry Lifshitz <lifshitz@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/pdata-quirks.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 1ee831fc5d0e..3e1407c909f7 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -108,6 +108,23 @@ static int omap3_sbc_t3730_twl_callback(struct device *dev, return 0; } +static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name) +{ + int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name); + + if (err) { + pr_err("SBC-T3x: %s reset gpio request failed: %d\n", + hub_name, err); + return; + } + + gpio_export(gpio, 0); + + udelay(10); + gpio_set_value(gpio, 1); + msleep(1); +} + static void __init omap3_sbc_t3730_twl_init(void) { twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback; @@ -115,12 +132,14 @@ static void __init omap3_sbc_t3730_twl_init(void) static void __init omap3_sbc_t3730_legacy_init(void) { + omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136); omap_ads7846_init(1, 57, 0, NULL); } static void __init omap3_sbc_t3530_legacy_init(void) { + omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub"); omap_ads7846_init(1, 57, 0, NULL); } @@ -198,6 +217,8 @@ static void __init omap3_sbc_t3517_wifi_init(void) static void __init omap3_sbc_t3517_legacy_init(void) { + omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub"); + omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub"); am35xx_emac_reset(); hsmmc2_internal_input_clk(); omap3_sbc_t3517_wifi_init(); |