From mboxrd@z Thu Jan 1 00:00:00 1970 From: zumeng.chen@gmail.com (Zumeng Chen) Date: Mon, 11 Jun 2012 22:00:14 +0800 Subject: [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver In-Reply-To: <1339423216-1323-1-git-send-email-zumeng.chen@gmail.com> References: <1339423216-1323-1-git-send-email-zumeng.chen@gmail.com> Message-ID: <1339423216-1323-4-git-send-email-zumeng.chen@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8 which starts EHCI tranceiver USB3320. Signed-off-by: Ajay Kumar Gupta Signed-off-by: Zumeng Chen --- arch/arm/mach-omap2/board-omap3evm.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c index 7e5e18f..3806f0e 100644 --- a/arch/arm/mach-omap2/board-omap3evm.c +++ b/arch/arm/mach-omap2/board-omap3evm.c @@ -360,6 +360,15 @@ static int omap3evm_twl_gpio_setup(struct device *dev, platform_device_register(&leds_gpio); + /* Enable VBUS switch by setting TWL4030.GPIO2DIR as output + * for starting USB tranceiver + */ + if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) { + u8 val; + twl_i2c_read_u8(TWL4030_MODULE_GPIO, &val, REG_GPIODATADIR1); + val |= 0x04; /* TWL4030.GPIO2DIR BIT at GPIODATADIR1(0x9B) */ + twl_i2c_write_u8(TWL4030_MODULE_GPIO, val, REG_GPIODATADIR1); + } return 0; } -- 1.7.5.4