As per the ISP1761 data sheet, the DcChipID register represents the hardware version number (0015h) and the chip ID (8210h) for the Peripheral Controller.
This patch fixes the chip ID value used to verify the controller. Cc: Felipe Balbi <ba...@ti.com> Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com> Signed-off-by: Sudeep Holla <sudeep.ho...@arm.com> --- drivers/usb/isp1760/isp1760-udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Hi Laurent, I found that the chip ID is wrong when I tried testing OTG on vexpress platforms. As per Section 10.8.2 DcChipID register in [1], it should be 0x00158210. It's still not functional, I will follow up with the logs separately. Regards, Sudeep [1] http://ridl.cfd.rit.edu/products/manuals/Altera/DE3_v.1.7_CDROM/Datasheet/USB/ISP1761.pdf#G2148521 diff --git a/drivers/usb/isp1760/isp1760-udc.c b/drivers/usb/isp1760/isp1760-udc.c index 9612d7990565..87a8dc044fce 100644 --- a/drivers/usb/isp1760/isp1760-udc.c +++ b/drivers/usb/isp1760/isp1760-udc.c @@ -1411,7 +1411,7 @@ static int isp1760_udc_init(struct isp1760_udc *udc) return -ENODEV; } - if (chipid != 0x00011582) { + if (chipid != 0x00158210) { dev_err(udc->isp->dev, "udc: invalid chip ID 0x%08x\n", chipid); return -ENODEV; } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
