On 03/13/2012 06:03 PM, Manjunathappa, Prakash wrote:
Properly set up the OTG mode thru the CFGCHIP2 register, enable the
USB0_DRVVBUS pin,
I don't see where you are enabling it.
and finally register the MUSB platform device.
Signed-off-by: Ajay Kumar Gupta<[email protected]>
Signed-off-by: Manjunathappa, Prakash<[email protected]>
---
Patche are on top below posted patches:
http://www.spinics.net/lists/linux-usb/msg59656.html
arch/arm/mach-davinci/board-da850-evm.c | 12 ++++++++++++
arch/arm/mach-davinci/usb.c | 9 +++++++++
2 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-da850-evm.c
b/arch/arm/mach-davinci/board-da850-evm.c
index 178d178..539e12c 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -787,6 +787,18 @@ static __init void da850_evm_usb_init(void)
*/
cfgchip2&= ~CFGCHIP2_USB1PHYCLKMUX;
cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX;
+ /*
+ * We have to override VBUS/ID signals when MUSB is configured into the
+ * host-only mode -- ID pin will float if no cable is connected, so the
+ * controller won't be able to drive VBUS thinking that it's a B-device.
+ * Otherwise, we want to use the OTG mode and enable VBUS comparators.
+ */
+ cfgchip2 &= ~CFGCHIP2_OTGMODE;
+#if CONFIG_USB_MUSB_DA8XX
This #ifdef doesn't make sense. It will make driver always work in host mode.
+ cfgchip2 |= CFGCHIP2_FORCE_HOST;
+#else
+ cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
This is what you need to leave. The driver should always work in OTG mode
now.
+#endif
__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
diff --git a/arch/arm/mach-davinci/usb.c b/arch/arm/mach-davinci/usb.c
index 25c3520..a941dc5 100644
--- a/arch/arm/mach-davinci/usb.c
+++ b/arch/arm/mach-davinci/usb.c
@@ -284,6 +284,15 @@ void __init da8xx_board_usb_init(const short pins[],
goto usb11_setup_fail;
}
+ /*
+ * TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
+ * with the power on to power good time of 3 ms.
+ */
+ ret = da8xx_register_usb20(1000, 3);
+ if (ret)
+ pr_warning("%s: USB 2.0 registration failed: %d\n",
+ __func__, ret);
Er, why this code is moved there? And how will this work on DA830 -- try to
register MUSB twice? Place this in the board file please where it belongs.
WBR, Sergei
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