This patch series add experimental driver for S3C OTG chip in UDC mode. The driver is based on Samsung BSP driver code, but it is heavily updated and bug fixed. It works only in Slave (CPU driven) mode. I did not work on DMA mode yet. It looks that the chip has some undocumented hardware bugs (or features), so I had to add several workaround in the driver code (see comments). The driver has been developed and tested on NCP board (ARM S3C6410 based). I've tested it with the following usb gadget driver: g_ether (both in CDC and RNDIS modes), g_serial (ACM serial), g_cdc2 (CDC Ethernet + Serial Gadget). Worked fine in all cases. I also managed to get it working on SMDK6410 board, but only with Samsung BSP kernel v2.6.29 (mainline kernels fail to boot properly on newer SMKD6410 boards with updated u-boot). It also has been tested on S5PC100 based board and works fine there. Note that the driver is known to fail sometimes if the debug messages are enabled. This might be some timing related issue. I hope this driver will be useful for either for updating/fixing the S3C HSOTG driver from mainline or as a standalone driver. The patch series has been prepared against latest ARM Kernel tree: http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm.git/ The series contains: [PATCH 1/3] [ARM] S3C: add otg clock definition [PATCH 2/3] [ARM] S3C: add missing USB_HSPHY registers to system map [PATCH 3/3] [drivers] [USB] USB-Gadget: Add S3C HS OTG UDC driver Best regards -- Marek Szyprowski Samsung Poland R&D Center -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
