Commit Graph

46180 Commits

Author SHA1 Message Date
David Wu
b375d84135 rockchip: clk: Add rk3328 SARADC clock support
The clk_saradc is dividing from the 24M, clk_saradc=24MHz/(saradc_div_con+1).
SARADC integer divider control register is 10-bits width.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-10-01 00:33:30 +02:00
David Wu
ef4cf5ae39 rockchip: clk: Add SARADC clock support for rk3288
The clk_saradc is dividing from the 24M, clk_saradc=24MHz/(saradc_div_con+1).
SARADC integer divider control register is 8-bits width.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-10-01 00:33:29 +02:00
David Wu
2e4ce50d1a rockchip: clk: Add rv1108 SARADC clock support
The clk_saradc is dividing from the 24M, clk_saradc=24MHz/(saradc_div_con+1).
SARADC integer divider control register is 10-bits width.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-10-01 00:33:29 +02:00
David Wu
ae3ed042ed dm: adc: Add driver for Rockchip SARADC
The ADC can support some channels signal-ended some bits Successive Approximation
Register (SAR) A/D Converter, like 6-channel and 10-bit. It converts the analog
input signal into some bits binary digital codes.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-10-01 00:33:29 +02:00
Sam Protsenko
6ca43a58db env: ti: boot: Show boot status information
Add tracing printings to Linux/Android boot commands, so that we can see
what's going on. Helps to trace possible bugs on early stages and
improves the output for user (which is especially useful, because we
have a bunch of boot commands executing one by one).

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-09-29 14:07:58 -04:00
Sam Protsenko
2717c08485 env: ti: boot: Extract command for eMMC Linux boot
Extract commands for booting Linux from eMMC to separate command. It
seems more logical that way, and allows us to run the whole command set
from U-Boot shell with only one command.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-09-29 14:07:58 -04:00
Sam Protsenko
a0b0ff0ae6 arm: dra7xx: Fix Linux boot from eMMC
Right now on OMAP5-based boards we have only one partition defined for
Linux boot, which is rootfs. That doesn't work with bootpart=1:2 (that
is defined in include/environment/ti/boot.h). To fix Linux boot we may
either:

 1. Change bootpart to be 1:1
 2. Or add preceding partition, so that rootfs is actually 1:2

Second choice seems more reasonable, as DFU is already using similar
partition table and can rely on bootpart to be 1:2.

This patch adds "bootloader" partition. So now eMMC layout for Linux
boot looks like this:

offset               content                 size          partition
(KiB)                                        (KiB)
Reviewed-by: Tom Rini <trini@konsulko.com>

=======================================================================

0       +--------------------------------+
        | MBR/GPT header                 |   128           -
128     +--------------------------------+
        | MLO                            |   256           -
384     +--------------------------------+
        | u-boot.img                     |   1792          bootloader
2176    +--------------------------------+
        | //////////// hole //////////// |   256           -
2432    +--------------------------------+
        | U-Boot environment             |   128           -
2560    +--------------------------------+
        | U-Boot environment (redundant) |   128           -
2688    +--------------------------------+
        | rootfs                         |   remaining     rootfs
end     +--------------------------------+

=======================================================================

Guard hole appears because U-Boot environment offset was calculated for
Android partition table, which has two additional partitions in place of
that hole ("environment" and "misc" partitions).

This patch also changes rootfs offset from 2 MiB further to 2688 KiB,
so that there won't be any collisions with U-Boot environment when we
flash rootfs.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
2017-09-29 14:07:58 -04:00
Sam Protsenko
f6d245b8c5 arm: am57xx: Fix Linux boot from eMMC
Right now on OMAP5-based boards we have only one partition defined for
Linux boot, which is rootfs. That doesn't work with bootpart=1:2 (that
is defined in include/environment/ti/boot.h). To fix Linux boot we may
either:

 1. Change bootpart to be 1:1
 2. Or add preceding partition, so that rootfs is actually 1:2

Second choice seems more reasonable, as DFU is already using similar
partition table and can rely on bootpart to be 1:2.

This patch adds "bootloader" partition. So now eMMC layout for Linux
boot looks like this:

offset               content                 size          partition
(KiB)                                        (KiB)
Reviewed-by: Tom Rini <trini@konsulko.com>

=======================================================================

0       +--------------------------------+
        | MBR/GPT header                 |   128           -
128     +--------------------------------+
        | MLO                            |   256           -
384     +--------------------------------+
        | u-boot.img                     |   1792          bootloader
2176    +--------------------------------+
        | //////////// hole //////////// |   256           -
2432    +--------------------------------+
        | U-Boot environment             |   128           -
2560    +--------------------------------+
        | U-Boot environment (redundant) |   128           -
2688    +--------------------------------+
        | rootfs                         |   remaining     rootfs
end     +--------------------------------+

=======================================================================

Guard hole appears because U-Boot environment offset was calculated for
Android partition table, which has two additional partitions in place of
that hole ("environment" and "misc" partitions).

This patch also changes rootfs offset from 2 MiB further to 2688 KiB,
so that there won't be any collisions with U-Boot environment when we
flash rootfs.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
2017-09-29 14:07:57 -04:00
Karthik Tummala
8adb6ec885 arm: dts: omap3: sync DTS with Linux 4.14-rc1
This re-syncs omap3 DTS file with current file from
Linux v4.14-rc1 to ensure a consistent configuration. Upstream
Linux removed the redundant Interrupt-parent property from usbhsohci,
usbhsehci, ssi_port1 and ssi_port2 sub nodes.

Signed-off-by: Karthik Tummala <karthik@techveda.org>
2017-09-29 14:07:57 -04:00
Patrice Chotard
0cc40dfc66 dm: clk: add missing .priv_auto_alloc_size() for stm32f7
Add missing .priv_auto_alloc_size() callback.
Previously private struct stm32_clk was not allocate
which leads to unpredictable behaviour

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-29 14:07:57 -04:00
Lokesh Vutla
df518f804f ARM: dts: OMAP5+: Enable all gpios in SPL
With DM enabled, gpio numbering is assigned based on the
probed order of gpios, irrespective of the gpio base. So enable
all necessary gpios in SPL.

Fixes: edf25d94d55c (“ARM: dts: OMAP5+: Enable gpio in SPL”)
Reported-by: Gou, Hongmei <h-gou@ti.com>
Tested-by: Aparna Balasubramanian <aparnab@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-09-29 14:07:56 -04:00
Lokesh Vutla
ba7f58b12f configs: keystone2: env: Fix burn_uboot_spi command
Now the u-boot spi image is greater than 0x80000, increase the same
in env during spi erase.

Reported-by: Yan Liu <yan-liu@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-09-29 14:07:56 -04:00
Andrew F. Davis
f8e714ebfa configs: k2g_evm: Make findfdt command populate fdtfile variable
On all other platforms the command 'findfdt' populates the variable
'fdtfile', but on K2G we only populate 'name_fdt'. The generic boot
and automation scripts fail when 'findfdt' is not populated, fix
this for K2G.

Signed-off-by: Andrew F. Davis <afd@ti.com>
2017-09-29 14:07:56 -04:00
Andrew F. Davis
373358f27a configs: am43xx_evm: Avoid relocation onto firewall at the end of DRAM
On secure devices the initial secure software may install a firewall at
the end of DRAM, define protected RAM to avoid space.

Signed-off-by: Andrew F. Davis <afd@ti.com>
2017-09-29 14:07:55 -04:00
Madan Srinivas
0830d72bb9 arm: am33xx: security: adds auth support for encrypted images
This patch adds support for authentication of both plain
text and encrypted binaries. A new SECDEV package is needed
to enable encryption of binaries by default for AM3x.

The ROM authentication API detects encrypted images at
runtime and automatically decrypts the image if the
signature verification passes.

Addition of encryption on AM3x results in a change in the
image format. On AM4x, AM5x and, on AM3x devices signing
clear test images, the signature is appended to the end of the
binary.

On AM3x, when the SECDEV package is used to create signed
and encrypted images, the signature is added as a header
to the start of the binary. So the binary size calculation
has been updated to reflect this change.

The signing tools and encrypted image format for AM3x
cannot be changed to behave like AM4x and AM5x to
maintain backward compatibility with older Sitara
M-Shield releases.

Signed-off-by: Madan Srinivas <madans@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
2017-09-29 14:07:55 -04:00
Andrew F. Davis
c2dca3374a defconfigs: Add a config for AM335x High Security EVM with UART Boot support
Add a new defconfig file for the AM335x High Security EVM. This config
is specific for the case of UART booting

Signed-off-by: Andrew F. Davis <afd@ti.com>
2017-09-29 14:07:55 -04:00
Adam Ford
b85781c2a8 ARM: omap3: am3517-evm: Add device tree and DM support
With the device tree ported from Linux 4.13, this enables
Driver Model and Device Tree support for the am3517-evm

Signed-off-by: Adam Ford <aford173@gmail.com>
Tested-by: Derald D. Woods <woods.technical@gmail.com>
2017-09-29 14:07:54 -04:00
Adam Ford
a56fd949a5 arm: dts: am3517_evm: Sync DTS files with Linux 4.13-RC5
To keep the DTS and DTSI files clean and in sync with Linux, new
u-boot.dtsi files are added.

There are some spacing issues in the patch, but they appear to be
present in the Linux source files.  I'll try to get to fixing them there,
and do a future re-sync at a later date.

Signed-off-by: Adam Ford <aford173@gmail.com>
Tested-by: Derald D. Woods <woods.technical@gmail.com>
2017-09-29 14:07:54 -04:00
Ulf Magnusson
4e1102f6de kconfiglib: update with 'imply' support
Corresponds to 375506d (File writing nit) from upstream
(https://github.com/ulfalizer/Kconfiglib).

Adds proper 'imply' support and fixes a few minor issues, one of which
previously triggered the following weird warning:

  configs/taurus_defconfig: /tmp/tmpisI45S:6: warning: assignment to SPL_LDSCRIPT changes mode of containing choice from "arch/$(ARCH)/cpu/u-boot-spl.lds" to "y"

The change in 8639f69 (genconfig.py: Print defconfig next to warnings)
was reapplied.

tools/moveconfig.py previously depended on a hack that merged 'select's
with 'imply's. It was modified to look at the union of
Symbol.get_selected_symbols() and Symbol.get_implied_symbols(), which
should give the same behavior.

tools/genboardscfg.py was verified to produce identical board.cfg's
before and after the change.

Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
2017-09-29 14:07:54 -04:00
Heinrich Schuchardt
2719ae3346 scripts/checkpatch: add missing spelling.txt
Checkpatch can use two dictionaries for finding typos:
* scripts/spelling.txt
* /usr/share/codespell/dictionary.txt
  which comes with package codespell and is selected by parameter
  --codespell

If the file scripts/spelling.txt is missing, a warning is shown.

Add the spelling.txt file from the Linux kernel 4.13 source.

We can later add our own typo corrections.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Dan Murphy <dmurphy@ti.com>
2017-09-29 14:07:53 -04:00
Stephen Warren
117eeb7f84 test/py: fix anchors in HTML status report
The current code wraps a pre tag inside an a tag. For some reason, this
causes at least Firefox to attempt to drag the pre section content when
using a mouse drag to select text. Re-order the tags so that the text can
be selected using the mouse, at least if you start the drag outside the
text (after the end of the line, for example).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2017-09-29 14:07:53 -04:00
Stephen Warren
2d26bf6c26 test/py: add skip marker for reliance on tools
Some tests use external tools (executables) during their operation. Add
a test.py mark to indicate this. This allows those tests to be skipped if
the required tool is not present.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2017-09-29 14:07:53 -04:00
Stephen Warren
d5170448ae test/py: provide more information about test skip reason
When skipping tests, explicitly mention the board type or config option
that caused the skip. This will help people understand/fix any issues.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2017-09-29 14:07:52 -04:00
Stephen Warren
af3fae0b1b test/py: Document required tools/packages
Some tests rely on external tools. Mention these in the test/py README.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
2017-09-29 14:07:52 -04:00
Tom Rini
ff6c3125e7 TI: ARCH_OMAP2PLUS: Enable SPL_STACK_R and provide default value
On ARCH_OMAP2PLUS platforms we know what the DDR layout is going to be,
and that it is safe to use SPL_STACK_R and provide a default value for
it.  select this and re-sync the defconfigs.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-29 14:07:51 -04:00
Adam Ford
c774207f48 ARM: da850-evm: Enable DM_I2C
With DM now enabled with the device tree pulled from Linux, we can
enable DM_I2C in U-Boot.

Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
[trini: Add DM_I2C_COMPAT to da850_am18xxevm to fix warning]
Signed-off-by: Tom Rini <trini@konsulko.com>
2017-09-29 14:07:18 -04:00
Adam Ford
f4fad71612 arm: da850-evm: Enable MTD Parts in SPI Flash
There is a discrepency between U-Boot and Linux on the partition map.
This enabes the MTD parts to pass MTD partition information from U-Boot to
Linux.  Linux already has a pending patch to enable MTD PARTS in
davinci_all_defconfig

Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
2017-09-29 10:52:22 -04:00
Adam Ford
a4670f8ebb arm: da850-evm: Enable DM and device tree support for da850-evm
With the device tree ported and DM compatible drivers, enable:
OF_CONTROL, DM_SPI, DM_SPI_FLASH and DM_SERIAL

Note: DM_SERIAL is not enabled for da850evm_direct_nor_defconfig
yet.

Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
2017-09-29 10:52:21 -04:00
Adam Ford
ab0ac27242 spi: davinci_spi: Add da830-spi support for DM
The DM support is already in the driver, so add
da830-spi to the compatible list.

Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
2017-09-29 10:52:20 -04:00
Adam Ford
4c70755986 arm: dts: da850: Migrate da850-evm DTS files from Linux 4.13-RC5
A few small additional items are needed to support DM_SPI and
DM_SERIAL, so those were added to da850-evm-u-boot.dtsi

Signed-off-by: Adam Ford <aford173@gmail.com>
2017-09-29 10:52:20 -04:00
Tom Rini
ec4e99a4a2 Merge git://git.denx.de/u-boot-mmc 2017-09-28 23:31:11 -04:00
Masahiro Yamada
3d3108d459 mmc: sdhci-cadence: set timing mode register depending on frequency
The MMC framework in U-Boot does not support a systematic API for
timing switch like mmc_set_timing() in Linux.

U-Boot just provides a hook to change the clock frequency via
mmc_set_clock().  It is up to drivers if additional register
settings are needed.

This driver needs to set a correct timing mode into a register when
it migrates to a different speed mode.  Only increasing clock frequency
could result in setup/hold timing violation.

The timing mode should be decided by checking MMC_TIMING_* like
drivers/mmc/host/sdhci-cadence.c in Linux, but "timing" is not
supported by U-Boot for now.  Just use mmc->clock to decide the
timing mode.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-09-29 11:34:22 +09:00
Seung-Woo Kim
b016b58542 spl: spl_mmc: add __maybe_unused to mmc_load_image_raw_sector()
If there are no CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_PARTITION,
CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR and CONFIG_SPL_OS_BOOT,
there is unused-function build warning. Add __maybe_unused macro
to remove the warning.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
2017-09-29 11:23:45 +09:00
Marek Vasut
9f13021f81 mmc: uniphier-sd: Add vqmmc regulator support
Add initial support for setting the vqmmc regulator. Since we do not
support 1V8 modes, set the regulator to 3V3 and enable it.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-09-29 11:17:29 +09:00
Marek Vasut
d6c40031d5 mmc: uniphier-sd: Update the file to match V3 patchset
Old version of the uniphier-sd 64bit IO support patchset V1 was
applied by the maintainer, update the uniphier-sd.c with the
changes from the V3 of the patchset.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2017-09-29 11:14:14 +09:00
Tom Rini
9969306971 Merge git://git.denx.de/u-boot-nds32 2017-09-28 09:03:05 -04:00
Patrice Chotard
b312c590bc mmc: Add MMC support for stm32h7 Socs
This patch adds SD/MMC support for STM32H7 SoCs.

Here is an extraction of SDMMC main features, embedded in
STM32H7 SoCs.
The SD/MMC block include the following:
 _ Full compliance with MultiMediaCard System Specification
   Version 4.51. Card support for three different databus modes:
   1-bit (default), 4-bit and 8-bit.
 _ Full compatibility with previous versions of MultiMediaCards
   (backward compatibility).
 _ Full compliance with SD memory card specifications version 4.1.
   (SDR104 SDMMC_CK speed limited to maximum allowed IO speed,
    SPI mode and UHS-II mode not supported).
 _ Full compliance with SDIO card specification version 4.0.
   Card support for two different databus modes: 1-bit (default)
   and 4-bit. (SDR104 SDMMC_CK speed limited to maximum allowed IO
   speed, SPI mode and UHS-II mode not supported).
 _ Data transfer up to 208 Mbyte/s for the 8 bit mode.
   (depending maximum allowed IO speed).
 _ Data and command output enable signals to control external
   bidirectional drivers.

The current version of the SDMMC supports only one SD/SDIO/MMC card
at any one time and a stack of MMC Version 4.51 or previous.

Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-28 20:23:19 +09:00
rick
9c7ffc94dc nds32: Fix io.h warning message about readb
It is caused from asm/io.h declare different input type.

Signed-off-by: rick <rick@andestech.com>
2017-09-28 13:16:54 +08:00
Tom Rini
6e9b109aa9 Merge git://git.denx.de/u-boot-usb 2017-09-27 09:39:48 -04:00
Seung-Woo Kim
a939af0c74 usb: dwc2: Align size of invalidating dcache before starting DMA
During using dwc2 usb gadget, if usb message size is too small,
following cache misaligned warning is shown:

   CACHE: Misaligned operation at range [bfdbcb00, bfdbcb04]

Align size of invalidating dcache before starting DMA to remove the
warning.

Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com>
2017-09-27 12:12:23 +02:00
Bin Meng
2e5026a2f0 usb: kbd: Set a default polling mechanism for USB keyboard
The choice of "USB keyboard polling" cannot be optional as without
one mechanism being set, it just doesn't work. Set the default one
to CONFIG_SYS_USB_EVENT_POLL.

Fixes: ecad7051 ("configs: Migrate all of the existing USB symbols, except fastboot")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:23 +02:00
Philipp Tomsich
6e652e3a7d usb: host: ehci-generic: convert to livetree
Update the generic EHCI driver to support a live tree.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-27 12:12:23 +02:00
Philipp Tomsich
a9d3037a8e usb: dwc2: convert to livetree
Update the DWC2 USB driver to support a live tree.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-27 12:12:22 +02:00
Philipp Tomsich
32c8eee37f rockchip: xhci: Convert to livetree
Update the Rockchip xhci wrapper driver to support a live device tree.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-09-27 12:12:22 +02:00
Bin Meng
ea7fad9101 dm: usb: storage: Fix broken read/write when both EHCD and xHCD are enabled
When EHCD and xHCD are enabled at the same time, USB storage device
driver will fail to read/write from/to the storage device attached
to the xHCI interface, due to its transfer blocks exceeds the xHCD
driver limitation.

With driver model, we have an API to get the controller's maximum
transfer size and we can use that to determine the storage driver's
capability of read/write.

Note: the non-DM version driver is still broken with xHCD and the
intent here is not to fix the non-DM one, since the xHCD itself is
already broken in places like 3.0 hub support, etc.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:22 +02:00
Bin Meng
6158d0b424 usb: storage: Refactor to use max_xfer_blk from struct us_data
This adds a new memeber max_xfer_blk in struct us_data to record
the maximum number of transfer blocks for the storage device.

It is set per HCD setting, and so far is to 65535 for EHCD and 20
for everything else.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:22 +02:00
Bin Meng
a23aa66baa dm: usb: ehci: Implement get_max_xfer_size() operation
EHCD can handle any transfer length as long as there is enough free
heap space left, hence set the theoretical max number SIZE_MAX.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:22 +02:00
Bin Meng
022ceacaf8 dm: usb: xhci: Implement get_max_xfer_size() operation
xHCD allocates one segment which includes 64 TRBs for each endpoint
and the last TRB in this segment is configured as a link TRB to form
a TRB ring. Each TRB can transfer up to 64K bytes, however data
buffers referenced by transfer TRBs shall not span 64KB boundaries.
Hence the maximum number of TRBs we can use in one transfer is 62.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:22 +02:00
Bin Meng
3e59f59015 dm: usb: Add a new USB controller operation 'get_max_xfer_size'
The HCD may have limitation on the maximum bytes to be transferred
in a USB transfer. USB class driver needs to be aware of this.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:21 +02:00
Marek Vasut
7489d22a3c usb: xhci: Set number of event segments and entries to 1
The Linux kernel driver sets the number of event segments and entries
to 1 , while the initial import of the xhci code set that values to 3
for reasons unknown. While most controllers are fine with more event
segments with more entries, there are standard-conformant controllers
(ie. Renesas RCar xHCI) which only support 1 event segment.

Set the number of event segments and event entries back to 1 to allow
such controllers to work with U-Boot xHCI stack. Note that the Renesas
controller correctly indicates ERST Max = 1 in HCSPARAMS2[7:4] .

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
2017-09-27 12:12:21 +02:00