Add support for handling the "linux,usable-memory-range" property in the
"/chosen" node to the FDT core code.  This can co-exist safely with the
architecture-specific handling, until the latter has been removed.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/3bd69bada93ee59b7d23c38b3527fc1654e19343.1628670468.git.geert+renesas@glider.be

There are two methods to specify the location of the elf core headers:
using the "elfcorehdr=" kernel parameter, as handled by generic code in
kernel/crash_dump.c, or using the "linux,elfcorehdr" property under the
"/chosen" node in the Device Tree, as handled by architecture-specific
code in arch/arm64/mm/init.c.

Extend support for "linux,elfcorehdr" to all platforms supporting DT by
adding platform-agnostic handling for handling this property to the FDT
core code.  This can co-exist safely with the architecture-specific
handling, until the latter has been removed.

This requires moving the call to of_scan_flat_dt() up, as the code
scanning the "/chosen" node now needs to be aware of the values of
"#address-cells" and "#size-cells".
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/c7e46e50aaf87ef49bdaa61358d25b122f32b7df.1628670468.git.geert+renesas@glider.be

Make the forward declarations of elfcorehdr_addr and elfcorehdr_size,
and the definitions of ELFCORE_ADDR_MAX and ELFCORE_ADDR_ERR always
available, like is done for phys_initrd_start and phys_initrd_size.
Code referring to these symbols can then just check for
IS_ENABLED(CONFIG_CRASH_DUMP), instead of requiring conditional
compilation using an #ifdef, thus preparing to increase compile
coverage.
Suggested-by: NRob Herring <robh+dt@kernel.org>
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/ba965ca613c0cc82c1ec2fe353ee34fb13b36474.1628670468.git.geert+renesas@glider.be

Convert Samsung Exynos5422 SoC frequency and voltage scaling for
Dynamic Memory Controller to DT schema format using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: NLukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20210820150353.161161-3-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Samsung Exynos PPMU bindings to DT schema format using
json-schema.  The example is quite different due to the nature of
dtschema examples parsing (no overriding via-label allowed).

New bindings contain copied description from previous bindings document,
therefore the license is set as GPL-2.0-only.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210820150353.161161-2-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Samsung Exynos NoC Probe bindings to DT schema format using
json-schema.

New bindings contain copied description from previous bindings document,
therefore the license is set as GPL-2.0-only.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210820150353.161161-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

There's only a couple of instances of the 'pci_device_reg' warnings left
and they look legit, so let's enable the warning by default.

Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
Cc: soc@kernel.org
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210820165011.3257112-1-robh@kernel.org/

The zte zx platform had been removed in commit 89d4f98a ("ARM: remove
zte zx platform"), so this header is no longer needed.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: NZenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20210821030924.192-2-yuzenghui@huawei.comSigned-off-by: NRob Herring <robh@kernel.org>

The zx296718-clkc driver had been removed in commit bcbe6005 ("clk:
remove zte zx driver"), so this header is no longer needed.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: NZenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20210821030924.192-1-yuzenghui@huawei.comSigned-off-by: NRob Herring <robh@kernel.org>

Trying to boot without SYSFS, but with OF_DYNAMIC quickly
results in a crash:

[    0.088460] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000070
[...]
[    0.103927] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.14.0-rc3 #4179
[    0.105810] Hardware name: linux,dummy-virt (DT)
[    0.107147] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
[    0.108876] pc : kernfs_find_and_get_ns+0x3c/0x7c
[    0.110244] lr : kernfs_find_and_get_ns+0x3c/0x7c
[...]
[    0.134087] Call trace:
[    0.134800]  kernfs_find_and_get_ns+0x3c/0x7c
[    0.136054]  safe_name+0x4c/0xd0
[    0.136994]  __of_attach_node_sysfs+0xf8/0x124
[    0.138287]  of_core_init+0x90/0xfc
[    0.139296]  driver_init+0x30/0x4c
[    0.140283]  kernel_init_freeable+0x160/0x1b8
[    0.141543]  kernel_init+0x30/0x140
[    0.142561]  ret_from_fork+0x10/0x18

While not having sysfs isn't a very common option these days,
it is still expected that such configuration would work.

Paper over it by bailing out from __of_attach_node_sysfs() if
CONFIG_SYSFS isn't enabled.
Signed-off-by: NMarc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210820144722.169226-1-maz@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

Convert H8/300 bus controller bindings to DT schema format using
json-schema.

The conversion also extends the bindings to match what is really used in
existing devicetree sources (the original file mentions only
"renesas,h8300-bsc" but "renesas,h8300h-bsc" and "renesas,h8s-bsc" are
used with it).
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210818202953.16862-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

yamllint warnings go to stdout which means on a quiet build no warnings
are output. Fix this and redirect the yamllint output to stderr.
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210820000047.1667819-1-robh@kernel.org

Convert eeprom-93xx46 binding documentation from txt to yaml format
Signed-off-by: NAswath Govindraju <a-govindraju@ti.com>
Link: https://lore.kernel.org/r/20210818105626.31800-1-a-govindraju@ti.comSigned-off-by: NRob Herring <robh@kernel.org>

The 'contains' keyword applies to elements within an array, so
using 'items' only makes sense if the elements of the array are another
array which is not the case for 'compatible' properties.

Looking at the driver, it seems the intent was the condition should be
true when 'faraday,ftpci100' is present, so we can drop
'cortina,gemini-pci'.

Fixes: 2720b991 ("dt-bindings: PCI: ftpci100: convert faraday,ftpci100 to YAML")
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-pci@vger.kernel.org
Signed-off-by: NRob Herring <robh@kernel.org>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210817174743.541353-1-robh@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

Convert Texas Instruments da8xx DDR2/mDDR memory controller bindings to
DT schema format using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210818113248.85084-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Synopsys IntelliDDR Multi Protocol memory controller (present in
Xilinx Zynq and ZynqMP) bindings to DT schema format using json-schema.

New binding contains copied parts of description from previous binding
document, therefore the license is set as GPL-2.0-only.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210818113139.84869-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Include dt-bindings for Marvell Armada XP SDRAM in the EDAC-ARMADA
entry.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210817093807.59531-2-krzysztof.kozlowski@canonical.com

Convert Marvell MVEBU SDRAM controller bindings to DT schema format
using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210817093807.59531-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Broadcom DDR PHY Front End (DPFE) bindings to DT schema format
using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: NMarkus Mayer <mmayer@broadcom.com>
Link: https://lore.kernel.org/r/20210817080617.14503-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Allows tracking dependencies between Ethernet PHYs and their consumers.

Cc: Andrew Lunn <andrew@lunn.ch>
Cc: netdev@vger.kernel.org
Signed-off-by: NSaravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210818021717.3268255-1-saravanak@google.comSigned-off-by: NRob Herring <robh@kernel.org>

Allows tracking dependencies between leds/backlights devices and their
consumers.
Signed-off-by: NSaravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210814023132.2729731-2-saravanak@google.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Qualcomm Atheros AR7xxx/AR9xxx DDR controller to DT schema
format using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210813143537.130310-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Samsung Exynos SoC True Random Number Generator bindings to DT
schema format using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210811084306.28740-2-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

Convert Samsung Exynos SoC Interrupt Combiner Controller bindings to DT
schema format using json-schema.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210811084306.28740-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

The Samsung Exynos SoC SATA bindings are not implemented in the kernel,
not used and superseded by generic
Documentation/devicetree/bindings/ata/ahci-platform.txt bindings.
Signed-off-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210811083859.28234-1-krzysztof.kozlowski@canonical.comSigned-off-by: NRob Herring <robh@kernel.org>

This patch updates interrupt-names with dropping "int_" prefix and
"_n" suffix.

Fixes: 1dbd981f ("dt-bindings: net: renesas,etheravb: Document Gigabit Ethernet IP")
Signed-off-by: NBiju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20210815133926.22860-1-biju.das.jz@bp.renesas.comSigned-off-by: NRob Herring <robh@kernel.org>

Document the bindings for HiKey 970 (hi3670) PCIe PHY
interface, supported via the pcie-kirin driver.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/461495431dd28ad2779658659f137db4bd747aa8.1628061310.git.mchehab+huawei@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

Add a new compatible, plus the new bindings needed by
HiKey970 board.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/875a4571e253040d3885ee1f37467b0bade7361b.1628061310.git.mchehab+huawei@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

Convert the file into a JSON description at the yaml format.
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/081c179ef2e0ddf11566144cd5967b15268565b4.1628061310.git.mchehab+huawei@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

The pcie-kirin driver doesn't declare a hisilicon,kirin-pcie.
Also, remove the useless comment after the description, as other
compat will be supported by the same driver in the future.
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/3e3e29a88f8e71eb228edf33d70cbe70db431408.1627965261.git.mchehab+huawei@kernel.orgSigned-off-by: NRob Herring <robh@kernel.org>

Commit 41a9ada3 ("of/fdt: mark hotpluggable memory") introduced
two (for systems with and without memblock) weak versions of
early_init_dt_mark_hotplug_memory_arch(), that could be overridden by an
architecture-specific version.  However, no overrides ever emerged.
Later, commit aca52c39 ("mm: remove CONFIG_HAVE_MEMBLOCK")
removed the non-memblock version.

Remove early_init_dt_mark_hotplug_memory_arch(), and replace it by a
direct call to memblock_mark_hotplug().
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1a61f75ec50d3c2922fcdbe33337266a58a4125f.1628671960.git.geert+renesas@glider.beSigned-off-by: NRob Herring <robh@kernel.org>

Commit e7ae8d17 ("MIPS: replace add_memory_region with
memblock") removed the last architecture-specific override of
early_init_dt_reserve_memory_arch().
Convert the common implementation from a weak global function to a
static function.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/be0140a0183ecfd0a3afa4fe6d2d77ed418102f9.1628671897.git.geert+renesas@glider.beSigned-off-by: NRob Herring <robh@kernel.org>

Allows better tracking of dependencies between devices.
Signed-off-by: NSaravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210805223729.1196047-1-saravanak@google.comSigned-off-by: NRob Herring <robh@kernel.org>

The driver has been removed by commit 523d83ef
("clocksource/drivers/efm32: Drop unused timer code") that's why binding
doc shouldn't be also valid anymore.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/571fc4b2e6d41c61b7f4445601a79bb50aace2e7.1628245879.git.michal.simek@xilinx.comSigned-off-by: NRob Herring <robh@kernel.org>

The Rockchip RK3568 SoC has a Bifrost Mali-G52 GPU,
add a compatible string for it.
Signed-off-by: NEzequiel Garcia <ezequiel@collabora.com>
Link: https://lore.kernel.org/r/20210805025948.10900-3-ezequiel@collabora.comSigned-off-by: NRob Herring <robh@kernel.org>

Fix the below warning:
drivers/of/fdt.c:196:4: warning: Value stored to 'pprev' is never read
[clang-analyzer-deadcode.DeadStores]
             pprev      = &pp->next;
             ^            ~~~~~~~~~
Signed-off-by: NOhhoon Kwon <ohoono.kwon@samsung.com>
Link: https://lore.kernel.org/r/20210803101309.904-1-ohoono.kwon@samsung.comSigned-off-by: NRob Herring <robh@kernel.org>

Modify LINK_1000_ACTIVITY and LINK_100_ACTIVITY to VSC8531_LINK_1000_ACTIVITY
and VSC8531_LINK_100_ACTIVITY respectively in the example of ethernet-phy node
according to include/dt-bindings/net/mscc-phy-vsc8531.h.
Signed-off-by: NBaisheng Gao <gaobaisheng@bonc.com.cn>
Link: https://lore.kernel.org/r/1627488086-200263-1-git-send-email-gaobaisheng@bonc.com.cnSigned-off-by: NRob Herring <robh@kernel.org>

Convert the ARM Versatile Character LCD Device Tree binding documentation
to json-schema.

Correct compatible value.
Document missing properties.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/4a63caa4136e8a31e82c7d75bb6f273498e8cccf.1627402256.git.geert@linux-m68k.orgSigned-off-by: NRob Herring <robh@kernel.org>

Convert the Device Tree binding documentation for ASCII LCD displays on
Imagination Technologies boards to json-schema.

Drop bogus regmap property.
Add example.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/6e74aa466d39ddc9abe502e054d04e8cc7b76b40.1627402094.git.geert@linux-m68k.org
[robh: add type to 'offset']
Signed-off-by: NRob Herring <robh@kernel.org>

  - Fix rejection of legitimate flash subnodes containing multiple
    compatible values,
  - Add missing list of required properties.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/d81b59a513c2a5204c8378b4a89cd07f97c46797.1627401508.git.geert+renesas@glider.beSigned-off-by: NRob Herring <robh@kernel.org>