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ARM: OMAP2+: make reset pulse for sbc-t3x usb hubs

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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>
This commit is contained in:
Dmitry Lifshitz 2014-01-12 15:22:55 +02:00 • committed by Tony Lindgren
commit b62d91e5e1
1 changed files with 21 additions and 0 deletions
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21
arch/arm/mach-omap2/pdata-quirks.c
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@ -108,6 +108,23 @@ static int omap3_sbc_t3730_twl_callback(struct device *dev,
return 0; 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) static void __init omap3_sbc_t3730_twl_init(void)
{ {
twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback; 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) 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); legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 136);
omap_ads7846_init(1, 57, 0, NULL); omap_ads7846_init(1, 57, 0, NULL);
} }
static void __init omap3_sbc_t3530_legacy_init(void) 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); 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) 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(); am35xx_emac_reset();
hsmmc2_internal_input_clk(); hsmmc2_internal_input_clk();
omap3_sbc_t3517_wifi_init(); omap3_sbc_t3517_wifi_init();