Commit graph

64923 commits

Author SHA1 Message Date
Anatolij Gustschin
a15d0aa680 imx: spl: return boot mode for asked MMC device in spl_mmc_boot_mode()
Boards may extend or re-define the boot list in their board_boot_order()
function by modifying spl_boot_list. E.g. a board might boot SPL from a
slow SPI NOR flash and then load the U-Boot from an eMMC or SD-card.
Or it might use additional MMC boot device in spl_boot_list for cases
when the image in SPI NOR flash is not found, so it could fall back to
eMMC, SD-card or another boot device.

Getting the MMC boot mode in spl_mmc will fail when we are trying to
boot from an MMC device in the spl_boot_list and the original board
boot mode (as returned by spl_boot_device()) is not an MMC boot mode.
Fix it by checking the asked MMC boot device from the spl_mmc_boot_mode()
argument.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
2020-05-01 18:46:55 +02:00
Ovidiu Panait
1a4c077b75 common/board_r: Drop initr_bedbug wrapper
Drop initr_bedbug wrapper and call bedbug_init directly during the init
sequence.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-05-01 11:34:01 -04:00
Ovidiu Panait
5fb292f20f cmd/bedbug.c: Make bedbug_init have a return value
Do this as a preparation for removing initr_bedbug wrapper from
common/board_r.c.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-05-01 11:34:01 -04:00
Ovidiu Panait
5cf9e3b237 common/board_r: arm: Merge initr_enable_interrupts into interrupts_init
initr_enable_interrupts() is an ARM-specific wrapper over
enable_interrupts(), which is run during the common init sequence. It can
be eliminated by moving the enable_interrupts() call to the end of
interrupt_init() function, in arch/arm/lib/interrupts*.c.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-05-01 11:34:01 -04:00
Marek Bykowski
9297e366d6 malloc: dlmalloc: add an ability for the malloc to be re-init/init multiple times
Malloc gets initialized with a call to mem_malloc_init() with the address
the allocation starts to and its size. Currently it is not possible to
move the malloc from one memory area to another as the malloc would eventually
fail.

This patch adds in the ability to re-init the malloc with the updated
start address and the size.

One of the use cases of this feature is SPL U-Boot running from within
the static memory and calling to malloc init from within board_init_f():

	arch/arm/cpu/armv8/start.S:reset vector
	arch/arm/cpu/armv8/start.S:main()
	arch/arm/lib/crt0_64.S:board_init_f()
	board/<my_board>/common/spl.c:board_init_f()
        board/<my_board>/common/spl.c:mem_malloc_init((ulong)CONFIG_SYS_SPL_MALLOC_START,
                        CONFIG_SYS_SPL_MALLOC_SIZE);

Shortly after the DDR (main) memory is init and ready we call to malloc init
again but this time with the start address in the DDR memory and a much greater
size for moving the allocation off the static to the DDR memory:

	board/<my_board>/common/spl.c:mem_malloc_init((ulong)CONFIG_SPL_MALLOC_OFFSET,
			CONFIG_SPL_MALLOC_SIZE);

Where CONFIG_SYS_SPL_MALLOC_START and CONFIG_SPL_MALLOC_OFFSET are the start
addresses of the malloc in the static and DDR memories respectively and
CONFIG_SYS_SPL_MALLOC_SIZE=SZ_16K and CONFIG_SPL_MALLOC_SIZE=SZ_2M are
the sizes of the mallocs in these memories. Note, now we have a much greater
memory, enlarging from 16K to 2M, available for allocation.

There is an alternative approach already existing in U-Boot with the use of
an early (simplified) malloc and the proper (dlamalloc) malloc however
necessitating managing the two mallocs whereas this approach proposes using
a single dlmalloc.

Signed-off-by: Marek Bykowski <marek.bykowski@gmail.com>
2020-05-01 11:34:01 -04:00
Philippe Reynes
c522949a29 rsa: sig: fix config signature check for fit with padding
The signature check on config node is broken on fit with padding.
To compute the signature for config node, U-Boot compute the
signature on all properties of requested node for this config,
except for the property "data". But, when padding is used for
binary in a fit, there isn't a property "data" but two properties:
"data-offset" and "data-size". So to fix the check of signature,
we also don't use the properties "data-offset" and "data-size"
when checking the signature on config node.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2020-05-01 11:34:01 -04:00
Philippe Reynes
eb7690e81f test/py: vboot: add a test to check fit signature on fit with padding
The pytest vboot does all his tests on fit without padding.
We add the same tests on fit with padding.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
2020-05-01 11:34:01 -04:00
Heinrich Schuchardt
f4070e6f6c hush: avoid NULL check before free()
free() checks if its argument is NULL. Don't duplicate this in the calling
code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2020-05-01 11:34:01 -04:00
Heinrich Schuchardt
4fb0f55fd2 fs: ext4: avoid NULL check before free()
free() checks if its argument is NULL. Don't duplicate this in the calling
code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2020-05-01 11:34:01 -04:00
Heinrich Schuchardt
b142d0ac19 cmd/gpt: avoid NULL check before free()
free() checks if its argument is NULL. Do not duplicate this in the calling
code.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
2020-05-01 11:34:01 -04:00
Sven Roederer
ea5d3731b8 tools/fit-image: print a warning when cmd-line for dtc might be truncated
Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
2020-05-01 11:34:01 -04:00
Sven Roederer
fc21a88f80 tools/mkimage: fix handling long filenames
The cmdline for calling the dtc was cut-off when using long filenames (e.g.
245 bytes) for output-file and datafile of "-f" parameter.
For FIT-images cmd[MKIMAGE_MAX_DTC_CMDLINE_LEN] is declared (hardcoded 512 bytes),
and contains some static values, the path of a tmpfile and a datafile. tmpfile is
max MKIMAGE_MAX_TMPFILE_LEN (256) and datafile might be also this size. Having two
very long pathname results in a truncation os the executed shell command, as the
truncated datafile path will not be found.
Redefine MKIMAGE_MAX_DTC_CMDLINE_LEN to "2 * MKIMAGE_MAX_TMPFILE_LEN + 35 for the
parameters.
This likely applies to the "-d" parameter, too.

Signed-off-by: Sven Roederer <devel-sven@geroedel.de>
2020-05-01 11:34:01 -04:00
Matthias Brugger
37f2755a00 arm: enable distro boot for bananapi-r2
This patch enables distro boot for the bananapi-r2, based on
a MediaTek mt7623n.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2020-05-01 11:34:01 -04:00
Matthias Brugger
2ef35fcb34 watchdog MediaTek add upstream compatible
The upstream compatible is called mt6589-wdt.
Add this compatible to the driver.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2020-05-01 11:34:01 -04:00
Matthias Brugger
6609d123ce timer MediaTek use upstream compatible
The timers compatible string in upstream is called
mt6577-timer. Add this compatible to the driver.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
2020-05-01 11:34:01 -04:00
Heinrich Schuchardt
932b8f8c29 doc: describe the analysis of crash dumps
Provide an overview of the analysis of U-Boot crash dumps.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2020-05-01 11:34:01 -04:00
Rasmus Villemoes
b8a42e0fcb rtc: pcf2127: don't add/subtract 1 to tm_mon
As noted in rtc_def.h, the tm_mon field in struct rtc_time is 1-12,
unlike in struct tm where it is 0-11. Currently, running "date" prints
the wrong

Date: 2020-04-01 (Friday)    Time: 13:05:30

and setting the RTC via the date command is also broken.

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
2020-05-01 11:34:01 -04:00
Patrick Delaunay
54be09cd8f arm: caches: manage phys_addr_t overflow in mmu_set_region_dcache_behaviour
Solved the overflow on phys_addr_t type for start + size in
mmu_set_region_dcache_behaviour() function.

This overflow is avoided by dividing start and end by 2 before addition,
and we only expecting that start and size are even.

This patch doesn't change the current function behavior if the
parameters (start or size) are not aligned on MMU_SECTION_SIZE.

For example, this overflow occurs on ARM32 with:
start = 0xC0000000 and size = 0x40000000
then start + size = 0x100000000 and end = 0x0.

For information the function behavior change with risk of regression,
if we just shift start and size before the addition.
Example with 2MB section size:
  MMU_SECTION_SIZE 0x200000 and MMU_SECTION_SHIFT = 21
  with start = 0x1000000, size = 0x1000000,
  - with the proposed patch, start = 0 and end = 0x1 as previously
  - with the more simple patch:
    end = (start >> MMU_SECTION_SHIFT) + (size >> MMU_SECTION_SHIFT)
    the value of end change:
    start >> 21 = 0, size >> 21 = 0 and end = 0x0 !!!

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-05-01 11:34:01 -04:00
Patrick Delaunay
2e8d68e241 arm: caches: add DCACHE_DEFAULT_OPTION
Add the new flags DCACHE_DEFAULT_OPTION to define the default
option to use according the compilation flags
CONFIG_SYS_ARM_CACHE_*.

This new compilation flag allows to simplify dram_bank_mmu_setup()
and can be used as third parameter (option=dcache option to select)
of mmu_set_region_dcache_behaviour function.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-05-01 11:34:01 -04:00
Patrick Delaunay
c8ec1e3ff5 arm: caches: protect dram_bank_mmu_setup access to bi_dram
Add protection in dram_bank_mmu_setup() to avoid access to bd->bi_dram
before relocation.

This patch allow to use the generic weak function dram_bank_mmu_setup
to activate the MMU and the data cache in SPL or in U-Boot before
relocation, when bd->bi_dram is not yet initialized.

In this cases, the MMU must be initialized explicitly with
mmu_set_region_dcache_behaviour function.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-05-01 11:34:01 -04:00
Patrick Delaunay
f8dc7f2f18 configs: migrate CONFIG_SYS_ARM_CACHE_* in Kconfig
Move CONFIG_SYS_ARM_CACHE_WRITETHROUGH and
CONFIG_SYS_ARM_CACHE_WRITEALLOC into Kconfig done by moveconfig.py.

Kconfig uses a choice between the 3 values supported in U-Boot,
including the new configuration CONFIG_SYS_ARM_CACHE_WRITEBACK
(the default configuration).

The patch also avoids to select simultaneously 2 configurations.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
2020-05-01 11:34:01 -04:00
Marek Vasut
e7882f65f0 tiny-printf: Support %i
The most basic printf("%i", value) formating string was missing,
add it for the sake of convenience.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
2020-05-01 11:03:24 -04:00
Marek Vasut
8148693b98 net: smc911x: Add DM support
Add support for U-Boot DM and DT probing. Furthermore, build the
SMC911x standalone EEPROM example only for the non-DM case, as it
is not converted yet.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-05-01 15:37:48 +02:00
Alifer Moraes
ef99f3d9e8 arm: imx: Add support for Google's Coral Dev Board
Add initial support for Google's Coral Dev Board based on i.MX8MQ.

https://coral.ai/products/dev-board

The Phanbell naming has been used here to match the naming convention
used in Google's U-Boot source tree:

https://coral.googlesource.com/uboot-imx/

Co-developed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Alifer Moraes <alifer.wsdm@gmail.com>
Tested-by: Marco Franchi <marcofrk@gmail.com>
2020-05-01 13:49:15 +02:00
Marek Vasut
d304e7ace3 ARM: imx8m: Fix reset in SPL on Toradex iMX8MM Verdin
Board files should not re-implement do_reset() to work around this
function not being defined in for specific configurations. Rather,
the fix is to compile in drivers which implement this properly.
This patch enables sysreset and watchdog drivers in SPL and ties
them together to implement the same as the do_reset() hack in the
board file, except correctly in the DM/DT framework.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-05-01 13:46:22 +02:00
Marek Vasut
f24dea4e1b ARM: imx8m: Fix reset in SPL on NXP iMX8MP EVK
Board files should not re-implement do_reset() to work around this
function not being defined in for specific configurations. Rather,
the fix is to compile in drivers which implement this properly.
This patch enables sysreset and watchdog drivers in SPL and ties
them together to implement the same as the do_reset() hack in the
board file, except correctly in the DM/DT framework.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2020-05-01 13:46:22 +02:00
Marek Vasut
2455f91833 ARM: imx8m: Fix reset in SPL on NXP iMX8MN EVK
Board files should not re-implement do_reset() to work around this
function not being defined in for specific configurations. Rather,
the fix is to compile in drivers which implement this properly.
This patch enables sysreset and watchdog drivers in SPL and ties
them together to implement the same as the do_reset() hack in the
board file, except correctly in the DM/DT framework.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2020-05-01 13:46:22 +02:00
Marek Vasut
77cfd0d2b6 ARM: imx8m: Fix reset in SPL on NXP iMX8MM EVK
Board files should not re-implement do_reset() to work around this
function not being defined in for specific configurations. Rather,
the fix is to compile in drivers which implement this properly.
This patch enables sysreset and watchdog drivers in SPL and ties
them together to implement the same as the do_reset() hack in the
board file, except correctly in the DM/DT framework.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2020-05-01 13:46:22 +02:00
Claudius Heine
c5635a032a ARM: imx8m: Don't use the addr parameter of reset_cpu()
imx8m has the only implementation of reset_cpu() which does not ignore
the addr parameter and instead gives it some meaning as the base address
of watchdog registers.  This breaks convention with the rest of U-Boot
where the parameter is ignored and callers are passing in 0.

Fixes: d2041725e8 ("imx8m: restrict reset_cpu")
Co-developed-by: Harald Seiler <hws@denx.de>
Signed-off-by: Harald Seiler <hws@denx.de>
Signed-off-by: Claudius Heine <ch@denx.de>
2020-05-01 13:46:22 +02:00
Harald Seiler
568af92679 ARM: imx8m: Fix indentation of reset_cpu() function
Use proper code-style, tabs instead of spaces for indentation.

Signed-off-by: Harald Seiler <hws@denx.de>
2020-05-01 13:46:22 +02:00
Marek Vasut
efa1a62ad2 ARM: imx8m: Do not define do_reset() if sysreset is enabled
The SPL can also be compiled with sysreset drivers just fine, so
update the condition to cater for that option.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Flavio Suligoi <f.suligoi@asem.it>
Cc: Harald Seiler <hws@denx.de>
Cc: Igor Opaniuk <igor.opaniuk@toradex.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2020-05-01 13:46:22 +02:00
Giulio Benetti
de0e7cba41 dt-bindings: pinctrl: imxrt1020: remove useless comment
A comment note has been left after completing pinctrl listing, so let's
remove it since it's useless.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
2020-05-01 13:46:22 +02:00
Marek Vasut
dabaabd3f1 ARM: imx: imx8m: Do not warn about cpu-idle-states if missing
If the cpu-idle-states is missing from the DT in the first place, do
not fail on removing in. Just move on and do not even print an error,
since not being able to remove something which is not there in the
first place is not an error and surely does not justify failing to
boot.

Turn the surrounding prints into debugs to reduce the useless noise.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
2020-05-01 13:46:22 +02:00
Adam Ford
87372fed19 arm: dts: imx8mm: sync dts from Linux Kernel 5.6.7
This patch synchronizes the device tree with that from 5.6.7.

This also adds nodes for crypto and ddrc, which makes keeping
the device tree files from individual boards in sync with the
Linux kernel.  This is helpful when boads reference those nodes.

Signed-off-by: Adam Ford <aford173@gmail.com>
2020-05-01 13:46:22 +02:00
Kuldeep Singh
164fed941f treewide: Remove unused FSL QSPI config options for IMX platforms
Some of these options are not used by the driver anymore and some of them
are obsolete as the information is gathered from the dt.
So, remove the unused config options now.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Signed-off-by: Kuldeep Singh <kuldeep.singh@nxp.com>
2020-05-01 13:46:22 +02:00
Fabio Estevam
05ae521cb6 imx8qxp_mek: Run with caches enabled
There is no need to run with caches disabled.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
2020-05-01 13:46:22 +02:00
Fabio Estevam
d6ce05db76 imx8qxp_mek: Remove SPL watchdog option
Currently the following watchdog error is seen in SPL:

U-Boot SPL 2020.04-00407-g8d5d3bcf3c (Apr 20 2020 - 09:48:09 -0300)
Normal Boot
WDT:   Not found!
...

There is no watchdog driver for i.MX8 at the moment, nor code for
configuring the watchdog in SPL, so remove the CONFIG_SPL_WATCHDOG_SUPPORT
option for now.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
2020-05-01 13:46:22 +02:00
Fabio Estevam
7e30a3eb76 imx8: Run SPL with caches enabled
It is safe to run SPL with caches enabled on i.MX8, so
remove such restriction.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Oliver Graute <oliver.graute@kococonnector.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
5e0ceb0bbd config: apalis-imx8: Enable FEC TXC delay
define FEC_ENET_ENABLE_TXC_DELAY to enable the delay on TXC line on
the MAC. This has to be done in order to meet RGMII specs.
According to RGMII specs the clock should get delayed so the edges of
the clock are preferrably in the middle of the edges of data-lines so
they can be sampled properly.
Our PHY expects the MAC to delay TXC line, as it is also written
in the spec. This patch makes sure the TXC delay on the FEC is enabled

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
a1a34faef2 net: fec: Add possibility to enable TXC delay
This patch enables the possibility to set FEC_ENET_ENABLE_TXC_DELAY or
FEC_ENET_ENABLE_RXC_DELAY so one can via a define enable the RXC or TXC
delay in the MAC.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
f72e48ba4d board: apalis_imx6: Add KSZ9131 phy skew settings
This patch adds skew register settings for KSZ9131. It checks first
which phy is on the board and then applies the correct skew settings.

Skew settings calculation for the KSZ9131:
The i.MX6 SoC has an output skew tolerance of -100ps to 900ps. All
PCB traces where routed exactly the same length so we can calculate
the skew settings without taking the length into consideration. The
traces are all length matched.

RXC skew (PHY to MAC):
- We use the 2ns DLL controlled delay on the PHY
- We do not use the skew registers

This results in the following values:

		RXC
PHY fixed Delay	2000ps
PHY Added Delay	0ps
T_setup_R min	2.00ns
T_setup_R typ	2.00ns
T_setup_R max	2.00ns
T_hold_R min	1.60ns
T_hold_R typ	2.00ns
T_hold_R max	2.40ns

That means we are well within RGMII specs.

TXC skew (MAC to PHY):
- We use the 2ns DLL controlled delay on the PHY
- We then subtract ~0.6ns with TXD[0:3] and TXC clock pad skew
  register in a resulting ~1.4ns delay.

This results in the following values under consideration of the
tolerances:

		TXC min	TXC typ	TXC max
MAC min		-100ps	-100ps	-100ps
MAC max		900ps	900ps	900ps
PHY fixed Delay	2000ps	2000ps	2000ps
PHY added Delay	-340ps	-600ps	-859ps
T_setup_T min	1.56ns	1.30ns	1.04ns
T_setup_T typ	2.06ns	1.80ns	1.54ns
T_setup_T max	2.56ns	2.30ns	2.04ns
T_hold_T min	1.04ns	1.30ns	1.56ns
T_hold_T typ	1.94ns	2.20ns	2.46ns
T_hold_T max	2.84ns	3.10ns	3.36ns

This shows that T_hold_T min and T_setup_T min times are out of spec
for RGMII timing. However the KSZ9131 has a minimal value for this time
of 0.8ns which is met under all circumstances.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
c4b650befc board: verdin-imx8mm: Add KSZ9131 phy skew settings
This patch determines which phy is placed on the board with the PHY ID
then it sets the same settings for KSZ9031 as before but for KSZ9131
it enables both RXC and TXC delay lines in the PHY.
This will compensate the missing delay from the MAC. Other skew
settings are not needed as the traces on board are routed exactly the
same length

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Tested-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
22b56f428d verdin-imx8mm: Change board phy skew values for our ksz9031
This patches uses the existing functions for interacting with the
KSZ9031 and uses the values appropriate for our board.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Tested-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Acked-by: Igor Opaniuk <igor.opaniuk@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
c51eef5924 net: phy: micrel: Add basic support for KSZ9131
This adds basic support for the new Micrel KSZ9131 phy.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
2020-05-01 13:46:22 +02:00
Philippe Schenker
0861aa8fed net: phy: micrel: Use defines for PHY_IDs and MASK
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
2020-05-01 13:46:22 +02:00
Fabio Estevam
63fc9d79e5 mx8mq_evk: Remove unrelated comment
The comment does not relate to the setup_i2c() function, so just
remove it.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
2020-05-01 13:46:22 +02:00
Fabio Estevam
d3855c802e imx8mp_evk: Remove unrelated comment
The comment does not relate to the setup_i2c() function, so just
remove it.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
2020-05-01 13:46:22 +02:00
Claudius Heine
3675d93875 imx: imx8m: Don't use the addr parameter of reset_cpu
imx8m has the only implementation of `reset_cpu` which does not ignore
the addr parameter and instead gives it some meaning as the base address
of watchdog registers.  This breaks convention with the rest of U-Boot
where the parameter is ignored and callers are passing in 0.

Fixes: d2041725e8 ("imx8m: restrict reset_cpu")
Co-Authored-by: Harald Seiler <hws@denx.de>
Signed-off-by: Claudius Heine <ch@denx.de>
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2020-05-01 13:46:22 +02:00
Claudius Heine
b9bb1d06e2 imx: imx8m*: Remove do_reset from board files
Use the `do_reset` implementation of `arch/arm/lib/reset.c` in SPL
instead.  It is very close to what is done here, anyway, and plays
more nicely with the rest of U-Boot than adding a custom `do_reset`
implementation into board files.

`do_reset` from `arch/arm/lib/reset.c` calls `reset_cpu` with 0 as the
addr parameter while the boards are passing WDOG1_BASE_ADDR.  This is
ok because the `reset_cpu` implementation uses WDOG1_BASE_ADDR by
default if 0 is passed in.

Co-Authored-by: Harald Seiler <hws@denx.de>
Signed-off-by: Claudius Heine <ch@denx.de>
Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2020-05-01 13:46:22 +02:00
Claudius Heine
b46e6cc581 ARM: reset: use do_reset in SPL/TPL if SYSRESET was not enabled for them
In case CONFIG_SYSRESET is set, do_reset from reset.c will not be available
anywere, even if SYSRESET is disabled for SPL/TPL.

'do_reset' is called from SPL for instance from the panic handler and
PANIC_HANG is not set

Signed-off-by: Claudius Heine <ch@denx.de>
Reviewed-by: Marek Vasut <marex@denx.de>
2020-05-01 13:46:22 +02:00