Hi, On Wed, Oct 10, 2012 at 02:33:32PM +0200, Constantine Shulyupin wrote: > From: Constantine Shulyupin <const@xxxxxxxxxxxxx> > > Sets USB PHY clock source to 24 MHz clock and call USB configuration from board initialization. > > Tested with OTG configuration, usb gadget g_zero on DM365 EVM connected to PC. > > References: > > Definition of USB_PHY_CTRL and PHYCLKFREQ: > - http://www.makelinux.com/lib/ti/DM36x_ARM/doc-141 > > Original patch by miguel.aguilar@xxxxxxxxxxxx three years ago: > - http://www.mail-archive.com/davinci-linux-open-source@xxxxxxxxxxxxxxxxxxxx/msg14741.html > > Signed-off-by: Constantine Shulyupin <const@xxxxxxxxxxxxx> > --- > > Note: > > Changelog > > Changes since v5 http://www.spinics.net/lists/kernel/msg1413120.html > accordingy feedback of nsekhar@xxxxxx http://www.spinics.net/lists/kernel/msg1414914.html > - phy configuration moved to drivers/usb/musb/davinci.c > - USB_OTG configuration is submitted in separated patch: http://www.spinics.net/lists/kernel/msg1414964.html > - Setting current limit to 1000 mA. Any way the current is limited to 510 mA in davinci_setup_usb. > > Changes since v4 http://www.spinics.net/lists/kernel/msg1412995.html > - removed fix of dev_info in musb_init_controller > > Changes since v3 http://www.spinics.net/lists/kernel/msg1412544.html: > - removed optional altering of pr_info > > Changes since v1 http://marc.info/?l=linux-kernel&m=130894150803661&w=2: > - removed optional code and reordered > - removed alternation of GPIO33, which is multiplexed with DRVVBUS, because is not need for peripheral USB > > This patch is based on code from projects Arago, Angstom and RidgeRun. > > --- > arch/arm/mach-davinci/board-dm365-evm.c | 2 ++ > drivers/usb/musb/davinci.c | 3 +++ > drivers/usb/musb/davinci.h | 1 + > 3 files changed, 6 insertions(+) > > diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c > index 688a9c5..ba5ffc1 100644 > --- a/arch/arm/mach-davinci/board-dm365-evm.c > +++ b/arch/arm/mach-davinci/board-dm365-evm.c > @@ -38,6 +38,7 @@ > #include <mach/mmc.h> > #include <mach/nand.h> > #include <mach/keyscan.h> > +#include <mach/usb.h> > > #include <media/tvp514x.h> > > @@ -610,6 +611,7 @@ static __init void dm365_evm_init(void) > > dm365_init_spi0(BIT(0), dm365_evm_spi_info, > ARRAY_SIZE(dm365_evm_spi_info)); > + davinci_setup_usb(1000, 8); > } > > MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM") > diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c > index 472c8b4..af09ebf 100644 > --- a/drivers/usb/musb/davinci.c > +++ b/drivers/usb/musb/davinci.c > @@ -428,6 +428,9 @@ static int davinci_musb_init(struct musb *musb) > __raw_writel(deepsleep, DM355_DEEPSLEEP); > } > > + if (machine_is_davinci_dm365_evm()) > + writel(readl(USB_PHY_CTRL) | USBPHY_CLKFREQ_24MHZ, USB_PHY_CTRL); no such checks in drivers. Please find another way to do this. -- balbi
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