23412 Commits

Author SHA1 Message Date
Simon Glass
440c6645aa x86: Don't process the kernel command line unless enabled
If the 'bootm' command is not enabled then this code is not available and
this causes a link error. Fix it.

Note that for the EFI app, there is no indication of missing code. It just
hangs!

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
2021-12-31 06:45:01 +01:00
Simon Glass
6e7ad4a45f x86: Allow booting a kernel from the EFI app
At present this is disabled, but it should work so long as the kernel does
not need EFI services. Enable it and add a note about remaining work.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-31 06:45:01 +01:00
Tom Rini
87a9aa604d - various fixes to the sandbox display support
- support for showing a logo without splash screen config
 - support for BMP drawing to depths other than 16bpp
 - tests for the different types of supported BMP images
 - support showing a logo when running coreboot via qemu
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Merge tag 'video-next-20211228' of https://source.denx.de/u-boot/custodians/u-boot-video into next

- various fixes to the sandbox display support
- support for showing a logo without splash screen config
- support for BMP drawing to depths other than 16bpp
- tests for the different types of supported BMP images
- support showing a logo when running coreboot via qemu
2021-12-28 11:28:31 -05:00
Tom Rini
440c00de69 Convert CONFIG_SYS_KWD_CONFIG to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_KWD_CONFIG

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:19 -05:00
Tom Rini
f98b3be287 Convert CONFIG_88F5182 et al to Kconfig
This converts the following to Kconfig:
   CONFIG_88F5182
   CONFIG_BOARD_IS_OPENRD_BASE
   CONFIG_BOARD_IS_OPENRD_CLIENT
   CONFIG_BOARD_IS_OPENRD_ULTIMATE
   CONFIG_D2NET_V2
   CONFIG_FEROCEON
   CONFIG_FEROCEON_88FR131
   CONFIG_INETSPACE_V2
   CONFIG_KW88F6192
   CONFIG_KW88F6281
   CONFIG_KW88F6702
   CONFIG_NET2BIG_V2
   CONFIG_NETSPACE_LITE_V2
   CONFIG_NETSPACE_MAX_V2
   CONFIG_NETSPACE_MINI_V2
   CONFIG_NETSPACE_V2
   CONFIG_SHEEVA_88SV131

At this point mv-plug-common.h is now only an include of mv-common.h so
remove that indirection.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:19 -05:00
Tom Rini
e7b7c6761a Convert CONFIG_CPU_FREQ_HZ to Kconfig
This converts the following to Kconfig:
   CONFIG_CPU_FREQ_HZ

Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:19 -05:00
Tom Rini
855e76b5cb Convert CONFIG_CPU_SH7751 to Kconfig
This converts the following to Kconfig:
   CONFIG_CPU_SH7751

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:19 -05:00
Tom Rini
3aca2b6bd7 Convert CONFIG_CPU_PXA27X to Kconfig
This converts the following to Kconfig:
   CONFIG_CPU_PXA27X

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:19 -05:00
Tom Rini
3569ac7afa ppc: mpc83xx: Remove unused CONFIG symbols
Neither of these symbols are referenced anywhere else, so remove them.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
86e4c4f7b3 Convert CONFIG_83XX_PCICLK to Kconfig
This converts the following to Kconfig:
   CONFIG_83XX_PCICLK

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
2f8a6db5d8 Finish conversion of CONFIG_SYS_CLK_FREQ to Kconfig
In order to finish moving this symbol to Kconfig for all platforms, we
need to do a few more things.  First, for all platforms that define this
to a function, introduce CONFIG_DYNAMIC_SYS_CLK_FREQ, similar to
CONFIG_DYNAMIC_DDR_CLK_FREQ and populate clock_legacy.h.  This entails
also switching all users from CONFIG_SYS_CLK_FREQ to get_board_sys_clk()
and updating a few preprocessor tests.

With that done, all platforms that define a value here can be converted
to Kconfig, and a fall-back of zero is sufficiently safe to use (and
what is used today in cases where code may or may not have this
available).  Make sure that code which calls this function includes
<clock_legacy.h> to get the prototype.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
e4c3ce7e28 CONFIG_SYS_CLK_FREQ: Consistently be static or get_board_sys_clk()
This CONFIG option is used in one of two ways.  The first way is that it
is defined to a static value, of an unsigned long size.  The second way
is that it is defined to something, typically a function, to determine
this value at run time.

However, in a few cases that function returns a static value.  Change
that to using the static value directly.

In the case of using something at run time, convert everything to using
a function of the same name and prototype.  This will allow for further
cleanups.

Finally, we have a few cases where the function is just not used, so
drop it.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
2196a4a7ef arm: s5pc1xx: Move CONFIG_SYS_CLK_FREQ_C1x0 out of CONFIG namespace
The values CONFIG_SYS_CLK_FREQ_C100 and CONFIG_SYS_CLK_FREQ_C110 are
only used in one place and not changed by the board config file.  Move
these out of the CONFIG namespace and in to the CFG namespace.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
ba1ed5b022 Convert CONFIG_ARCH_MAP_SYSMEM to Kconfig
This converts the following to Kconfig:
   CONFIG_ARCH_MAP_SYSMEM

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
1b46518736 Convert CONFIG_TPL_TEXT_BASE to Kconfig
This converts the following to Kconfig:
   CONFIG_TPL_TEXT_BASE

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
ada261f19a Finish converting CONFIG_SYS_FSL_CLK to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_FSL_CLK

We move the exiting option to common/Kconfig near the other options to
control the contents of board_init_f() and note that this is a legacy
option.  We further restrict this to where the call is going to be
non-empty, for the SoCs that had only been using this for some
MMC-related clocks.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:18 -05:00
Tom Rini
7856cd5a6d Convert CONFIG_SYS_PCI_64BIT to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_PCI_64BIT

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 16:20:17 -05:00
Tom Rini
d06e4b7e25 Finish CONFIG_VID et al conversion to Kconfig
This converts the following to Kconfig:
   CONFIG_VID
   CONFIG_VOL_MONITOR_INA220
   CONFIG_VOL_MONITOR_IR36021_READ
   CONFIG_VOL_MONITOR_IR36021_SET
   CONFIG_VOL_MONITOR_LTC3882_READ
   CONFIG_VOL_MONITOR_LTC3882_SET

To finish this migration, we first need to introduce CONFIG_SPL_VID as
some platforms only use this code in full U-Boot while others use it in
SPL as well.  To make the Kconfig logic clearer, guard all of the
sub-options with a if VID || SPL_VID check.  Finally, add Kconfig
options for the remaining related options that did not previously have
one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 08:41:38 -05:00
Tom Rini
be7dbb60c5 Convert CONFIG_SYS_IMMR to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_IMMR

We do this by consolidating the SYS_IMMR options we have and providing
defaults.

We also, in the few places where M68K was also sharing code with these
platforms, define it within the file to CONFIG_SYS_MBAR to match usage.
This should be cleaned up longer term.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 08:41:38 -05:00
Tom Rini
3847ba94f0 Finish converting CONFIG_WATCHDOG, HW_WATCHDOG and WDT to Kconfig
Because of how these symbols work, and the remaining board config.h file
uses, we need to do these at the same time.  In some cases we just get
to move rather directly to the defconfigs.  A few cases require manual
intervention.

For the case of the eb_cpu5282 we need to select HW_WATCHDOG for the
target, given how it's implemented.

For the cases of m53menlo, dh_imx6, display5, and display5_factory we
disable SPL watchdog support as the particular combination of options
they want would require either more symbols or enabling SPL_DM.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 08:41:38 -05:00
Tom Rini
f76750d111 Convert CONFIG_CONS_INDEX et al to Kconfig
This converts the following to Kconfig:
   CONFIG_CONS_INDEX
   CONFIG_DEBUG_UART_CLOCK
   CONFIG_FSL_TZPC_BP147
   CONFIG_GENERIC_ATMEL_MCI
   CONFIG_IDENT_STRING
   CONFIG_LIBATA
   CONFIG_LNX_KRNL_IMG_TEXT_OFFSET_BASE
   CONFIG_LPC32XX_GPIO
   CONFIG_MP
   CONFIG_MPC8XXX_GPIO
   CONFIG_MTD_PARTITIONS
   CONFIG_MVGBE
   CONFIG_MXC_GPIO
   CONFIG_NR_DRAM_BANKS
   CONFIG_OF_BOARD_SETUP
   CONFIG_OF_STDOUT_VIA_ALIAS
   CONFIG_OF_SYSTEM_SETUP
   CONFIG_PREBOOT
   CONFIG_ROCKCHIP_SERIAL
   CONFIG_RTC_ENABLE_32KHZ_OUTPUT
   CONFIG_RTC_MV
   CONFIG_SCSI_AHCI
   CONFIG_SF_DEFAULT_BUS
   CONFIG_SF_DEFAULT_CS
   CONFIG_SF_DEFAULT_SPEED
   CONFIG_SOFT_SPI
   CONFIG_SPI_FLASH_EON
   CONFIG_SPI_FLASH_MACRONIX
   CONFIG_SPI_FLASH_MTD
   CONFIG_SPI_FLASH_SPANSION
   CONFIG_SPI_FLASH_SST
   CONFIG_SPI_FLASH_STMICRO
   CONFIG_SUPPORT_RAW_INITRD
   CONFIG_SYS_ARCH_TIMER
   CONFIG_SYS_BOARD
   CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE
   CONFIG_SYS_DCACHE_OFF
   CONFIG_SYS_FDT_SAVE_ADDRESS
   CONFIG_SYS_FLASH_CFI
   CONFIG_SYS_FSL_ERRATUM_ESDHC135
   CONFIG_SYS_HAS_SERDES
   CONFIG_SYS_L2CACHE_OFF
   CONFIG_SYS_LITTLE_ENDIAN
   CONFIG_SYS_LOAD_ADDR
   CONFIG_SYS_MMCSD_FS_BOOT_PARTITION
   CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_PARTITION
   CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR
   CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR
   CONFIG_SYS_NS16550
   CONFIG_SYS_PLLFIN
   CONFIG_SYS_SPI_U_BOOT_OFFS
   CONFIG_TIMER_SYS_TICK_CH
   CONFIG_USB_EHCI_FSL
   CONFIG_U_QE
   CONFIG_VERSION_VARIABLE

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 08:41:38 -05:00
Tom Rini
98ab831da7 Convert CONFIG_FSL_IFC to Kconfig
This converts the following to Kconfig:
   CONFIG_FSL_IFC

This is done via select statements to match previous logic.

Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-27 08:40:33 -05:00
Simon Glass
8657ad43f3 sandbox: video: Add BMP tests for 32bpp and 8bpp modes
Add a few more tests for BMP rendering. Use a back door into the sandbox
SDL driver to adjust the resolution at runtime.

The truetype code does not support 8bpp. Add this so that the display is
not blank when running in this mode.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-26 23:02:19 +01:00
Simon Glass
250e735c69 video: sandbox: Avoid duplicate display windows
When unit tests are run they currently create a new window. Update the
code so that the old one is removed first. This avoids the confusion as to
which one is active.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-26 23:02:19 +01:00
Simon Glass
0fe5e9481e sandbox: video: Support 8bpp depth
At present sandbox only supports 16 and 32bpp depths, since those are the
easy ones with SDL.

We can support other depths by manually converting the pixel formats. Add
support for this, to enable an 8ppp (monochrome) format.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-26 23:02:19 +01:00
John Keeping
eaee44aaaa rockchip: boot_mode: fix fastboot command
The USB controller index must be separated from the type argument,
otherwise the preboot command fails with the error:

	Error: Wrong USB controller index format

Add the missing space to fix fastboot mode here.

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 15:17:51 +08:00
Jagan Teki
0ade02526b engicam: px30: Add Engicam PX30.Core C.TOUCH 2.0 10.1" OF
PX30.Core is an EDIMM SOM based on Rockchip PX30 from Engicam.

C.TOUCH 2.0 is a general purpose carrier board with capacitive
touch interface support.

10.1" OF is a capacitive touch 10.1" Open Frame panel solutions.

PX30.Core needs to mount on top of C.TOUCH 2.0 carrier with pluged
10.1" OF for creating complete PX30.Core C.TOUCH 2.0 10.1" Open Frame.

Add support for it.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 14:56:58 +08:00
Jagan Teki
19a4d31c12 arm64: dts: rockchip: Sync px30 from linux-next
Sync the px30 devicetree files from linux-next tree.

commit <14ce8069f48b> ("lib/stackdepot: allow optional init and
stack_table allocation by kvmalloc() - fixup3")

Note, this path even sync rk3326 files as it depends on px30.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 14:56:58 +08:00
Jagan Teki
43419b936c arm64: dts: rockchip: px30: Move dmc into -u-boot.dtsi
dmc node is specific to U-Boot, it is always better practice
to maintain U-Boot specific nodes into -u-boot.dtsi files
in order to maintain Linux dts file sync compatibility.

Move the dmc into px30-u-boot.dtsi, also add dmc node
explicitly in rk3326-odroid-go2-u-boot.dtsi since it is
using px30.dts.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 14:56:58 +08:00
Yifeng Zhao
f8b36089af dts: rockchip: rk3399: enable emmc phy for spl
adapting commit ac804143cf ("mmc: rockchip_sdhci: add phy and clock
config for rk3399") to fix the issue "Not found emmc phy device".

Signed-off-by: Yifeng Zhao <yifeng.zhao@rock-chips.com>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com> - on a Rock960
Reviewed-by: Patrick Wildt <patrick@blueri.se>
Tested-by: Patrick Wildt <patrick@blueri.se> - on a Pinebook Pro
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 14:46:25 +08:00
Nico Cheng
ef7f43084f rockchip: rk3568: add arch_cpu_init()
We configured the drive strength and security of EMMC in
arch_cpu_init().

Signed-off-by: Nico Cheng <nico.cheng@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 11:10:24 +08:00
Nico Cheng
6b97f2d0ed arm: dts: rockchip: rk3568: Enable sdhci and sdmmc0 node
Enable sdhci and sdmmc0 node in rk3568-u-boot.dtsi

Signed-off-by: Nico Cheng <nico.cheng@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 11:10:24 +08:00
Nico Cheng
daec31e5cc rockchip: Kconfig: Enable SPL support for rk3568
Enable SPL support in Kconfig and add some related option in
rk3568_common.h

Signed-off-by: Nico Cheng <nico.cheng@rock-chips.com>
Signed-off-by: Jason Zhu <jason.zhu@rock-chips.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 11:10:24 +08:00
Chris Morgan
b774be9de5 rockchip: px30: add support for HW RNG for Odroid Go Advance
The Odroid Go Advance has a hardware random number generator present.
The device does not have an upstream Linux driver, but does have a
U-Boot driver. Add the appropriate node so that the hardware RNG can be
used in U-Boot.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2021-12-24 10:58:59 +08:00
Simon Glass
239d22c795 fdt: Enable OF_HAS_PRIOR_STAGE for most boards with OF_BOARD
Use this new Kconfig instead of OF_BOARD, so we know for sure which boards
obtain their devicetree from a prior stage. Leave sandbox alone since it
does not. Also don't touch xilinx_versal_virt since it does not have a
specific TARGET Kconfig.

This option implies OF_BOARD for now, but with future work standard
passage may be used instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Add rpi_4_32b and rpi_arm64 to the list of boards converted]
Signed-off-by: Tom Rini <trini@konsulko.com>
2021-12-23 11:19:17 -05:00
Simon Glass
975e0e04bb arm: highbank: Add devicetree files
Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
c4607665da arm: qemu-ppce500: Add a devicetree file
This uses QEMU virt which creates its own devicetree.

Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
142918807d arm: bcm7xxx: Add a devicetree file
Add an empty devicetree file for these boards. It seems to be possible to
obtain a real one from another bootloader called 'bolt' but I will leave
this to the maintainer.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
50d857ebc4 arm: xilinx_versal_virt: Add a devicetree file
Add an empty file to prevent build errors when building with
CONFIG_OF_SEPARATE enabled.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
56a47ba21b arm: octeontx: Add an empty devicetree file
Add an empty file to prevent build errors when building with
CONFIG_OF_SEPARATE enabled.

Unfortunately there are no build instructions in the U-Boot tree to enable
a real file to be created.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
e5e6cc7cfa arm: xenguest_arm64: Add a empty devicetree file
Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

The real devicetree is created by the Xen project on-the-fly.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
aa26948b58 arm: vexpress: Add a devicetree files for juno
Sync these file, obtained from Linux v5.15.

Add a note for the maintainer, and SPDX lines where they are missing.
The added lines are:

   SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause

Note, this matches the text in those files, but is not the same as the
GPL-2.0 of some files.

[1] https://releases.linaro.org/android/reference-lcr/juno/7.1-17.05/

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
2021-12-23 10:24:39 -05:00
Simon Glass
9ae600e9e2 arm: rpi: Sync rpi dts files from Linux
Sync these files, obtained from Linux v5.15.

This adds a devicetree file for rpi_4 which was not there before.

Testing shows no change so far as I can see:
- boots to U-Boot prompt on rpi0, rpi2
- boots to distro on rpi3
- boots to distro on rpi4

I am assuming that syncing with Linux is safe, but the maintainer should
know for sure.

Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
4027792090 riscv: qemu: Split devicetree files for qemu_riscv32/64
This uses QEMU virt which creates its own devicetree.

Copy the existing empty version of this file, so splitting the existing
qemu-virt into two, since anyone actually trying to use this will need a
different devicetree for 32- and 64-bit machines.

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canaonical.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
9f4f5f1f4a arm: qemu: Add a devicetree file for qemu_arm64 virt
This uses QEMU virt which creates its own devicetree.

Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canaonical.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Simon Glass
4dc1d8318b arm: qemu: Add a devicetree file for qemu_arm
This uses QEMU virt which creates its own devicetree.

Add an empty version of this file, so that we can at least build this
board when devicetrees are required.

Tested-by: Heinrich Schuchardt <heinrich.schuchardt@canaonical.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
2021-12-23 10:24:39 -05:00
Tom Rini
4afab30cae Prepare v2022.01-rc4
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Merge tag 'v2022.01-rc4' into next

Prepare v2022.01-rc4
2021-12-20 17:12:04 -05:00
Pali Rohár
2e5d0aa396 arm: mvebu: Use printf for printing fatal errors
There is no point to hide/disable fatal errors via debug() macro.
Print fatal errors loudly.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-12-19 09:50:47 +01:00
Pali Rohár
9c0642d89b arm: mvebu: Remove commented example code
Include file debug_uart.h already contains documentation how to use it.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-12-19 09:50:47 +01:00
Stefan Eichenberger
50b5544c05 arm: mvebu: a38x: serdes: improve USB3 electrical configuration
This is a backport from Marvell U-Boot:
https://github.com/MarvellEmbeddedProcessors/u-boot-marvell
commit 381d029e7a ("fix: serdes: a38x, a39x: Improve USB3 electrical
configuration")

Improves electrical USB3 receiver jitter tolerance test:

- De-Emphasize force, in functional mode the transmitter should always
have 3.5db de-emphasize, so we are forcing it.

- After forcing De-Emphasize, choose 3.5db (After forcing, default is
6dB so need to change it to 3.5dB).

- Align90 set to 0x58 - this is the sample point in the receiver, after
the clock is recovered this sampler samples at the chosen value, usually
it is supposed to be 0x60(which is the center of the eye), but sometimes
after adding jitter and ISI the center of the eye can move slightly and
the sample point is not necessarily the exact center, and after
optimization (searching the middle of the eye manually) it was seen that
the center of the eye is actually 0x58 and not 0x60.

- FFE Res and FFE Cap set to 0xE & 0xF respectively: improves this
settings is adequate according to how the USB3 spec defines the
interconnect, thus improves USB3 jitter tolerance settings.

- Change the resolution of the DFE to 0x3 which is 6mV(highest
resolution) , this avoids the DFE to saturate and cease to work.

- HPF set to 0x3 which is 5Khz high pass filter, the function of the HPF
is to filter the low frequency patterns(below 5Khz) to make sure that
the signal is not a noise, the setting before was 0x1(205Khz), and the
change came since the USB3 CP0 pattern, that is used in the USB3 jitter
tolerance testing, is similar to PRBS15, which has 2^15=32768bits which
is 32768*200ps (200ps is one Unit interval in USB3(5Gbps)) = 6.5us,
which is in frequency terms: 152Khz. since the PRBS15 is a random
pattern and can theoretically have once in a while a pattern that will
be at frequency of 152Khz, hence the previous setting (205khz HPF) can
possibly filter this pattern which can cause to an error in the
receiver, thus this change to avoid such scenarios.

Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: René Straub <rene.straub@netmodule.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2021-12-19 09:50:47 +01:00