From b62d91e5e1abe59f50b5861d26fdecec0e38eecf Mon Sep 17 00:00:00 2001 From: Dmitry Lifshitz Date: Sun, 12 Jan 2014 15:22:55 +0200 Subject: [PATCH] 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 Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/pdata-quirks.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) 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(); -- 2.20.1