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* usb: Add support for txfifo thresholdSimon Glass2012-03-29-1/+12
| | | | | | | | | CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the txfilltuning field in the EHCI controller on reset. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Tom Warren <twarren@nvidia.com>
* USB: ehci-mx6: Add proper IO accessorsFabio Estevam2012-03-27-9/+4
| | | | | | | | | Add proper IO accessors for mx6 usb registers. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Stefano Babic <sbabic@denx.de> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Jason Liu <r64343@freescale.com>
* Renamed mx28_register to mx28_register_32 to prepare for mx28_register_8Robert Delien2012-03-26-4/+4
| | | | | | | | | This patch renames mx28_register to mx28_register_32 in order to prepare for the introduction of an 8-bit register, mx28_register_8. Signed-off-by: Robert Delien <robert@delien.nl> Acked-by: Marek Vasut <marex@denx.de> Tested-by: Marek Vasut <marex@denx.de>
* usb/ehci: Add USB support for the MX6QWolfgang Grandegger2012-03-26-0/+206
| | | | | | | Currently, only USB Host 1 is supported. Cc: Remy Bohmer <linux@bohmer.net> Signed-off-by: Wolfgang Grandegger <wg@denx.de>
* USB: Armada100: EHCI Driver for Armada100 SOCsAjay Bhargav2012-03-19-0/+65
| | | | | | This patch adds support for USB EHCI driver for Armada100 SOCs. Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
* USB: Armada100: Add UTMI PHY interface driverAjay Bhargav2012-03-19-0/+96
| | | | | | | This patch adds USB host controller's UTMI PHY interface driver for Armada100 SOCs. Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
* usb: replace wait_ms() with mdelay()Mike Frysinger2012-03-19-29/+29
| | | | | | | | | | | | | | | | | | | | | | | Common code has a mdelay() func, so use that instead of the usb-specific wait_ms() func. This also fixes the build errors: ohci-hcd.c: In function 'submit_common_msg': /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1519:9: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1816:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1827:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1844:10: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1563:11: sorry, unimplemented: called from here /usr/local/src/u-boot/blackfin/include/usb.h:202:44: sorry, unimplemented: inlining failed in call to 'wait_ms': function body not available ohci-hcd.c:1583:9: sorry, unimplemented: called from here make[1]: *** [ohci-hcd.o] Error 1 Signed-off-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Marek Vasut <marex@denx.de>
* USB: move keyboard polling into kbd driveramartin@nvidia.com2012-03-03-42/+0
| | | | | | | | | This moves keyboard polling logic from USB HCD drivers into USB keyboard driver. Remove usb_event_poll() as keyboard polling was the only user of this API. With this patch USB keyboard works with EHCI controllers again. Tested on a tegra2 seaboard. Signed-off-by: Allen Martin <amartin@nvidia.com>
* ehci-omap: Clean up added ehci-omap.cGovindraj.R2012-02-12-55/+154
| | | | | | | | | | | | | | | | | | Clean up added ehci-omap.c and make it generic for re-use across omap-soc having same ehci ip block. Also pass the modes to be configured from board file and configure the ports accordingly. All usb layers are not cache aligned, till then keep cache off for usb ops as ehci will use internally dma for all usb ops. * Add a generic common header ehci-omap.h having common ip block data and reg shifts. * Rename and modify ehci-omap3 to ehci.h retain only conflicting sysc reg shifts remove others and move to common header file. * pass the board data for beagle/panda accordinly to use ehci ports. Acked-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
* ehci-omap: driver for EHCI host on OMAP3Ilya Yanok2012-02-12-0/+157
| | | | | | | Taken from Beagle code. Tested on mcx board (AM3517-based). Signed-off-by: Ilya Yanok <yanok@emcraft.com> Tested-by: Stefano Babic <sbabic@denx.de>
* orion5x: add USB host ehci-marvell supportAlbert ARIBAUD2012-02-12-0/+5
| | | | Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* Remove kirkwood-specifics from marvell EHCI driverAlbert ARIBAUD2012-02-12-14/+17
| | | | Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
* Rename ehci-kirkwood as ehci-marvellAlbert ARIBAUD2012-02-12-1/+1
| | | | | Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> Signed-off-by: Prafulla Wadaskar <prafulla@marvell.com>
* Coding Style cleanupWolfgang Denk2011-12-19-2/+0
| | | | | | | Fix trailing white space, indentation by spaces instead of TABs, excessive blank lines, trailing blank lines. Signed-off-by: Wolfgang Denk <wd@denx.de>
* USB: EHCI: Allow EHCI post-powerup configuration in board filesMarek Vasut2011-12-11-2/+10
| | | | | | | | | | | This patch allows USB to work on some hosts, which need additional frobing after the host was powered up via regular USB powerup sequence. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Cc: Wolfgang Grandegger <wg@denx.de> Cc: Jason Liu <r64343@freescale.com>
* USB: MX5: Add MX5 usb post-init callbackMarek Vasut2011-12-11-2/+12
| | | | | | | | | | This is useful for USB Transceivers init etc. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Cc: Wolfgang Grandegger <wg@denx.de> Cc: Jason Liu <r64343@freescale.com>
* USB: MX5: Abstract out mx51 USB pixmux configurationMarek Vasut2011-12-11-0/+71
| | | | | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Cc: Wolfgang Grandegger <wg@denx.de> Cc: Jason Liu <r64343@freescale.com>
* USB: MX5: add generic USB EHCI support for mx51 and mx53Wolfgang Grandegger2011-12-11-0/+175
| | | | | | | | | | | It's derived from ehci-mxc and uses the header files of the ehci-fsl interface. The callback board_ehci_hcd_init() has been introduced to allow for board-specific setup when USB is started. Signed-off-by: Wolfgang Grandegger <wg@denx.de> CC: Stefano Babic <sbabic@denx.de> CC: Remy Bohmer <linux@bohmer.net>
* ehci: speed up initializationVincent Palatin2011-12-11-1/+1
| | | | | | | | | | According to EHCI specification v1.0, the controller should stabilize the power on a port at most 20 ms after the port power bit transition. So, we put this setting in the virtual descriptor corresponding field, (bPwrOn2PwrGood = 10 => 10 x 2ms = 20ms), this saves about 500ms at each controller initialization/enumeration. Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
* USB: Add usb_event_poll() to get keyboards working with EHCIMarek Vasut2011-12-11-1/+32
| | | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Remy Bohmer <linux@bohmer.net>
* USB: Fix complaints about strict aliasing in OHCI-HCDMarek Vasut2011-12-11-32/+43
| | | | Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
* drivers/usb/host/ehci-mxc.c: Fix GCC 4.6 warningAnatolij Gustschin2011-12-09-2/+1
| | | | | | | | | Fix: ehci-mxc.c: In function 'ehci_hcd_init': ehci-mxc.c:113:6: warning: variable 'tmp' set but not used [-Wunused-but-set-variable] Signed-off-by: Anatolij Gustschin <agust@denx.de>
* drivers/usb/host/sl811-hcd.c: Fix GCC 4.6 build warningWolfgang Denk2011-12-02-7/+5
| | | | | | | | | | Fix: sl811-hcd.c: In function 'sl811_rh_submit_urb': sl811-hcd.c:556:8: warning: variable 'wIndex' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* Merge branch 'master' of git://git.denx.de/u-boot-armWolfgang Denk2011-11-16-0/+155
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'master' of git://git.denx.de/u-boot-arm: arm, davinci: add DAVINCI_MMC_CLKID arm, davinci_emac: fix driver bug if more then 3 PHYs are detected arm, davinci: da850/dm365 lowlevel cleanup omap5: Add omap5_evm board build support. omap4/5: Add support for booting with CH. omap5: emif: Add emif/ddr configurations required for omap5 evm omap5: clocks: Add clocks support for omap5 platform. omap5: Add minimal support for omap5430. omap: Checkpatch fixes omap4: make omap4 code common for future reuse GCC4.6: Squash warnings in onenand_base.c GCC4.6: Fix common/usb.c on xscale OneNAND: Add simple OneNAND SPL PXA: vpac270: Enable the new generic MMC driver PXA: Cleanup serial_pxa PXA: Drop csb226 and innokom boards (unmaintained) m28evk: Fix comment about the number of RAM banks mx31: Fix checkpatch warnings in generic.c mx31: Use proper IO accessor for GPR register mx31: Remove duplicate definition for GPR register qong: Use generic function for configuring GPR register M28EVK: Enable USB HOST support iMX28: Add USB HOST driver iMX28: Add USB and USB PHY register definitions M28: Add memory detection into SPL iMX28: Fix ARM vector handling M28: Add doc/README.m28 documentation M28: Add MMC SPL iMX28: Add support for DENX M28EVK board iMX28: Add u-boot.sb target to Makefile iMX28: Add image header generator tool iMX28: Add driver for internal RTC iMX28: Add GPMI NAND driver iMX28: Add APBH DMA driver iMX28: Add SPI driver iMX28: Add GPIO control iMX28: Add I2C bus driver iMX28: Add PINMUX control FEC: Add support for iMX28 quirks iMX28: Add SSP MMC driver iMX28: Initial support for iMX28 CPU MX25: zmx25: GCC4.6 fix build warnings da850: add new config file for AM18xx BeagleBoard: config: Switch to ttyO2 OMAP3: Change omap3_evm maintainer devkit8000: Fix NAND SPL on boards with 256MB NAND integrator: enable Vpp and disable flash protection integrator: add system controller header integrator: make flash writeable on boot integrator: use io-accessors for board init integrator: move text offset to config integrator: pass configs for core modules ARM: remove superfluous setting of arch_number in board specific code. SPL: Allow ARM926EJS to avoid compiling in the CPU support code integrator: do not test first part of the memory arm: a320: fix broken timer ARM: define CONFIG_MACH_TYPE for all ronetix boards dm646x: pass board revision info to kernel dm646x: add new configuration for dm6467T arm, davinci: Fix setting of the SDRAM configuration register arm, davinci: Remove the duplication of LPSC functions arm, davinci: Rename AM1808 lowlevel functions to DA850 da8xxevm: fix build error ARM: re-add MACH_TYPE_XXXXXX for VCMA9 board and add CONFIG_MACH_TYPE
| * iMX28: Add USB HOST driverMarek Vasut2011-11-11-0/+155
| | | | | | | | | | | | | | | | | | | | This driver supports both EHCI ports on the i.MX28 CPU. Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Wolfgang Denk <wd@denx.de> Cc: Detlev Zundel <dzu@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* | drivers/usb/host/ehci-fsl.c: Fix GCC 4.6 build warningKumar Gala2011-11-11-1/+3
|/ | | | | | | | | Fix: ehci-fsl.c: In function 'ehci_hcd_init': ehci-fsl.c:43:7: warning: variable 'usb_phy' set but not used [-Wunused-but-set-variable] Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ehci-mxc: remove incorrect commentWolfgang Grandegger2011-11-04-1/+0
| | | | | | | The USB port to be used is determined by CONFIG_MXC_USB_PORT. So, it appears that the comment is not correct. Remove it. Signed-off-by: Wolfgang Grandegger <wg@denx.de>
* ARM: kirkwood: reduce dependence of including platform fileLei Wen2011-10-27-0/+1
| | | | | | | | | | | For files like the drivers/serial/serial.c, it must include the platform file, as the CONFIG_SYS_NS16550_COM1 must reference to the definition in the platform definition files. Include the platform definition file in the config file, so that it would decouple the dependence for the driver files. Signed-off-by: Lei Wen <leiwen@marvell.com>
* consolidate mdelay by providing a common function for all usersAnatolij Gustschin2011-10-22-3/+0
| | | | | | | | | There are several mdelay() definitions in the driver and board code. Remove them all and provide a common mdelay() in lib/time.c. Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Mike Frysinger <vapier@gentoo.org>
* drivers/usb/host/ohci-hcd.c: fix warning: variable ... set but not usedWolfgang Denk2011-10-09-2/+1
| | | | | | | | | | Fix: ohci-hcd.c: In function 'dl_transfer_length': ohci-hcd.c:968:8: warning: variable 'tdINFO' set but not used [-Wunused-but-set-variable] Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Acked-by: Remy Bohmer <linux@bohmer.net>
* powerpc/85xx: Add ULPI and UTMI USB Phy support for P1010/P1014Ramneek Mehresh2011-09-29-3/+36
| | | | | | | | | | | | | Add UTMI and ULPI PHY support for USB controller on qoriq series of processors with internal UTMI PHY implemented, for example P1010/P1014 - Use both getenv() and hwconfig to get USB phy type till getenv() is depricated - Introduce CONFIG_SYS_FSL_USB_INTERNAL_UTMI_PHY to specify if soc has internal UTMI phy Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Acked-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* ehci-hcd: Allow cleanups to happen gracefully on a timeout.Joel Fernandes2011-09-04-1/+0
| | | | | | | | | | | | With this, the EHCI seems to "recover" from a timeout. This is particularly observable if you were to ping the wrong IP Address and then ping the correct one or if there was a temporary failure during tftp sessions. All it takes is one timeout to disable it. If you have a noisy network (lot of traffic), even if the traffic is not for the board, the timeouts don't occur. Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
* USB: Remove __attribute__ ((packed)) for struct ehci_hccr and ehci_hcorJason Kridner2011-09-04-2/+2
| | | | | | | | | | | | | | | | | | | | Remove __attribute__ ((packed)) to prevent byte access to soc registers in some gcc versions. Having patches to enable ehci for the BeagleBoard lying around for several months, this one was the show-stopper. Switched to align(4), rather than remove the attribute, per suggestion from Alexander. Credits have to go to Laine Walker-Avina <lwalkera@ieee.org> for finding the problem. Signed-off-by: Jason Kridner <jkridner@beagleboard.org> Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com> Cc: Alexander Holler <holler@ahsoftware.de> Cc: Sandeep Paulraj <s-paulraj@ti.com> Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
* usb: r8a66597: Fix argument mistake of inlNobuhiro Iwamatsu2011-08-08-1/+1
| | | | | | | | | | | | | Fail in build, because argument of inl used in r8a66597_read_fifo is wrong. r8a66597.h:441:35: error: macro "inl" passed 2 arguments, but takes just 1 In file included from r8a66597-hcd.c:25: r8a66597.h: In function ‘r8a66597_read_fifo’: r8a66597.h:441: error: ‘inl’ undeclared (first use in this function) r8a66597.h:441: error: (Each undeclared identifier is reported only once r8a66597.h:441: error: for each function it appears in.) Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
* imx: Add support for USB EHCI on imx25Matthias Weisser2011-07-14-8/+25
| | | | | | | Adding support for USB host on imx25 using the internal PHY. Changing the name of base address define for imx31 to get some unification. Signed-off-by: Matthias Weisser <weisserm@arcor.de>
* ehci-pci: Fix PCI EHCI driver for 36-bitZhao Chenhui2011-06-25-3/+2
| | | | | | | Convert the PCI base address into a virtual address. Signed-off-by: Zhao Chenhui <b35336@freescale.com> Signed-off-by: Li Yang <leoli@freescale.com>
* AT91: change includes from asm/arch/io.h to asm/io.hReinhard Meyer2011-05-18-1/+1
| | | | | | and remove the now unused asm/arch-at91/io.h Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
* AT91: fix related at91 driver filesReinhard Meyer2011-05-18-8/+8
| | | | Signed-off-by: Reinhard Meyer <u-boot@emk-elektronik.de>
* IMX: MX31: Cleanup include files and drop nasty #ifdef in driversStefano Babic2011-04-27-1/+1
| | | | | | | | | | As exception among the i.MX processors, the i.MX31 has headers without general names (mx31-regs.h, mx31.h instead of imx-regs.h and clock.h). This requires several nasty #ifdef in the drivers to include the correct header. The patch cleans up the driver and renames the header files as for the other i.MX processors. Signed-off-by: Stefano Babic <sbabic@denx.de>
* Merge branch 'master' of git://git.denx.de/u-boot-mpc85xxWolfgang Denk2011-04-05-0/+1
|\ | | | | | | | | | | | | Conflicts: drivers/usb/host/ehci-pci.c Signed-off-by: Wolfgang Denk <wd@denx.de>
| * echi: add ULI1575 PCI IDZhao Chenhui2011-04-04-0/+1
| | | | | | | | | | | | | | | | Add ULI1575 EHCI controller to the list of the supported devices. Signed-off-by: Zhao Chenhui <b35336@freescale.com> Acked-by: Remy Bohmer <linux@bohmer.net> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | ehci-pci: Add PCI EHCI controllerTrübenbach, Ralf2011-04-02-1/+2
|/ | | | | | | | | | This patch adds support for the PI7C9X442SL PCIe EHCI host controller from Pericom. Tested at P4080DS eval board from Freescale. Signed-off-by: Ralf Trübenbach <ralf.truebenbach@men.de> Cc: Remy Bohmer <linux@bohmer.net>
* Fix EHCI usb submit timeout and unify with OHCISimon Glass2011-02-19-7/+10
| | | | | | | | | | | | Changed both to use a common timeout for URB submission, since they were using different values and EHCI's was too short. Also fixed EHCI to actually check if urb submission succeeded, rather than silently continuing into the weeds. Change-Id: I7f71499ffaa05187d8e5618db2419e1606007b82 Signed-off-by: Simon Glass <sjg@chromium.org>
* usb: Remove usb_dev_init() from ehci-ppc4xx.cStefan Roese2010-11-26-1/+0
| | | | | | | | | Calling usb_dev_init() from within the EHCI host driver is wrong. The EHCI host driver should have no dependency/interconnection to the USB device driver. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* usb: Clear CMD_RUN while issuing CMD_RESET in ehci_reset()Stefan Roese2010-11-26-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a problem noticed on lwmon5 (PPC440EPx) using the common EHCI driver, when "usb reset" is issued multiple times. Upon the 2nd (and further) "usb reset" command, the command fails with the following messages: => usb reset (Re)start USB... USB: Register 1111 NbrPorts 1 USB EHCI 1.00 scanning bus for devices... 5 USB Device(s) found scanning bus for storage devices... 2 Storage Device(s) found => usb reset (Re)start USB... USB: EHCI fail to reset Error, couldn't init Lowlevel part This patch fixes this problem. Now "usb reset" can be called multiple times. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* usb: Add WATCHDOG_RESET call to polling loopStefan Roese2010-11-26-0/+2
| | | | | | | | This watchdog reset call is needed here, otherwise the lwmon5 board (PPC440EPx based) will reset upon the "usb reset" command. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Remy Bohmer <linux@bohmer.net>
* usb: fix for USB_ST_STALLED status reporting in ehci_submit_async()Anatolij Gustschin2010-11-26-0/+2
| | | | | | | | | | | Checking the status field of the qTD token in the current code do not take into acount cases where endpoint stall (halted) bit is set together with XactErr status bit. As a result clearing stall on an endpoint won't be done if this status bit was also set. Check for halted bit and report USB_ST_STALLED status if the host controller also indicates endpoit stall condition. Signed-off-by: Anatolij Gustschin <agust@denx.de>
* Switch from archive libraries to partial linkingSebastien Carlier2010-11-17-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com>
* ehci-hcd.c: fix hanging under higher loadWolfgang Denk2010-10-22-1/+1
| | | | | | | | | | | | | | | | | | | | | | This patch solves a problem with USB hanging under higher load on a i.MX31 board. It falls into class of typical USB problems and fixes: if you don't understand the real cause, add a delay somewhere. The problem appeared after introduction of ELF relocation, which results in smaller code, which appears to run faster (probably because it fits better in the cache); turning off the instruction cache, adding debug printf()s and increasing the delay have all been found to make the problem go away. Moving the original "udelay(1)" up in the code to it's new place made the problem appear much less frequently. Increasing the delay to 2 microseconds then made the code run reliably in all (hour-long) tests. To be on the safe side, we set it to 5 microseconds here. Signed-off-by: Heiko schocher <hs@denx.de> Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Remy Bohmer <linux@bohmer.net> Cc: Stefano Babic <sbabic@denx.de>
* USB: fix Queue Element Transfer Descriptor changesWolfgang Denk2010-10-22-1/+1
| | | | | | | | | | | | | | | | Commit 3ed1607 "USB: sync Queue Element Transfer Descriptor against EHCI spec" added an "__attribute__ ((aligned (32)))" to the declaration of struct qTD, as used for example in the Linux kernel as well. However, it turns out that this attribute causes errors in "usb start" (like "ERROR: NOT USB_CONFIG_DESC 7b" and similar). Drop the attribute again. Signed-off-by: Wolfgang Denk <wd@denx.de> Cc: Dan Lykowski <lykowdk@gmail.com> Cc: Remy Bohmer <linux@bohmer.net> Cc: Stefano Babic <sbabic@denx.de>
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