[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver
From: Zumeng Chen <hidden>
Date: 2012-06-11 14:00:14
Also in:
linux-omap
Subsystem:
arm port, omap2+ support, the rest · Maintainers:
Russell King, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2012-07-08 · [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver · Zumeng Chen <hidden>
- 2012-07-06 · [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver · tony@atomide.com (Tony Lindgren)
- 2012-06-21 · [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver · Zumeng Chen <hidden>
- 2012-06-20 · [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver · Sergei Shtylyov <hidden>
- 2012-06-20 · [PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver · Zumeng Chen <hidden>
TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8 which starts EHCI tranceiver USB3320. Signed-off-by: Ajay Kumar Gupta <redacted> Signed-off-by: Zumeng Chen <redacted> --- 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; }
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1.7.5.4