From mboxrd@z Thu Jan 1 00:00:00 1970 From: balbi@ti.com (Felipe Balbi) Date: Tue, 13 Dec 2011 16:18:04 +0200 Subject: [PATCH v2 01/19] mxc_udc: add workaround for ENGcm09152 for i.MX25 In-Reply-To: <1323785377-22463-1-git-send-email-eric@eukrea.com> References: <20111213101846.GC2619@pengutronix.de> <1323785377-22463-1-git-send-email-eric@eukrea.com> Message-ID: <20111213141803.GO3133@legolas.emea.dhcp.ti.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On Tue, Dec 13, 2011 at 03:09:37PM +0100, Eric B?nard wrote: > this patch gives the possibility to workaround bug ENGcm09152 > on i.MX25 when the hardware workaround is also implemented on > the board. > It covers the workaround described on page 42 of the following Errata, > titled "USB: UTMI_USBPHY VBUS input impedance implementation error" : > http://cache.freescale.com/files/dsp/doc/errata/IMX25CE.pdf > > Signed-off-by: Eric B?nard > Cc: Sascha Hauer > Cc: Greg Kroah-Hartman > Cc: Li Yang Sascha, are you taking this one or should I take it ? One comment below though. > --- > drivers/usb/gadget/fsl_mxc_udc.c | 22 +++++++++++++--------- > 1 files changed, 13 insertions(+), 9 deletions(-) > > diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c > index dcbc0a2..4aff05d 100644 > --- a/drivers/usb/gadget/fsl_mxc_udc.c > +++ b/drivers/usb/gadget/fsl_mxc_udc.c > @@ -23,7 +23,7 @@ > static struct clk *mxc_ahb_clk; > static struct clk *mxc_usb_clk; > > -/* workaround ENGcm09152 for i.MX35 */ > +/* workaround ENGcm09152 for i.MX25/35 */ > #define USBPHYCTRL_OTGBASE_OFFSET 0x608 > #define USBPHYCTRL_EVDO (1 << 23) > > @@ -89,16 +89,20 @@ eenahb: > void fsl_udc_clk_finalize(struct platform_device *pdev) > { > struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; > - if (cpu_is_mx35()) { > + if (cpu_is_mx25() || cpu_is_mx35()) { > unsigned int v; > - > - /* workaround ENGcm09152 for i.MX35 */ > + void __iomem *otgbase; > + if (cpu_is_mx25()) > + otgbase = MX25_IO_ADDRESS(MX25_USB_BASE_ADDR + > + USBPHYCTRL_OTGBASE_OFFSET); > + else if (cpu_is_mx35()) > + otgbase = MX35_IO_ADDRESS(MX35_USB_BASE_ADDR + > + USBPHYCTRL_OTGBASE_OFFSET); I don't want to see cpu_is_* or machine_is_* or or anywhere on drivers, please make sure to remove them for 3.4 merge window the latest. You should also make sure that this driver has no static globals. IOW, I would like to be able to have multiple instances of this driver working fine. Granted, you have no boards with such setup, but we made that mistake on musb driver and now we have a bunch of other stuff to rework in order to get our dual-MUSB board to work ;-) I also see that fsl_udc_core.c is still not using dev_pm_ops, please fix that too. -- balbi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: