dm: reset: Update uclass to allow querying reset status

Add a reset operations function pointer to support querying the current
status of a reset control.

Reviewed-by: Tom Rini <trini@konsulko.com>

dm: reset: Update uclass to allow querying reset status

Add a reset operations function pointer to support querying the current
status of a reset control.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

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SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So

SPDX: Convert all of our single license tags to Linux Kernel style

When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>

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Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR

We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added

Remove unnecessary instances of DECLARE_GLOBAL_DATA_PTR

We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.

Signed-off-by: Tom Rini <trini@konsulko.com>

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reset: fix reset_get_bulk when phandle error

This fixes the Coverity Defect CID 175348 when dev_count_phandle_with_args()
returns a negative value.

Fixes: 0c28233903b5 ("reset: Add get/assert/deass

reset: fix reset_get_bulk when phandle error

This fixes the Coverity Defect CID 175348 when dev_count_phandle_with_args()
returns a negative value.

Fixes: 0c28233903b5 ("reset: Add get/assert/deassert/release for bulk of reset signals")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

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reset: Add get/assert/deassert/release for bulk of reset signals

This patch adds a "bulk" API to the reset API in order to get/deassert/
assert/release a group of reset signals associated with a dev

reset: Add get/assert/deassert/release for bulk of reset signals

This patch adds a "bulk" API to the reset API in order to get/deassert/
assert/release a group of reset signals associated with a device.

This bulk API will avoid adding a copy of the same code to manage
a group of reset signals in drivers.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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Merge git://git.denx.de/u-boot-usb

reset: add reset_release_all()

Add reset_release_all() method which Assert/Free an
array of resets signal that has been previously successfully
requested by reset_get_by_*()

Signed-off-by: Patrice

reset: add reset_release_all()

Add reset_release_all() method which Assert/Free an
array of resets signal that has been previously successfully
requested by reset_get_by_*()

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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reset: add reset_request()

This is needed in error path to assert previously deasserted
reset by using a saved reset_ctl reference.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-

reset: add reset_request()

This is needed in error path to assert previously deasserted
reset by using a saved reset_ctl reference.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

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dm: reset: Update uclass to support livetree

Update the reset domain uclass to support livetree. Fix the xlate() method
which has no callers.

Signed-off-by: Simon Glass <sjg@chromium.org>

Merge git://git.denx.de/u-boot-dm

dm: core: Replace of_offset with accessor

At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree,

dm: core: Replace of_offset with accessor

At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.

Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge git://git.denx.de/u-boot-fdt

libfdt: Bring in upstream stringlist functions

These have now landed upstream. The naming is different and in one case the
function signature has changed. Update the code to match.

This applies the

libfdt: Bring in upstream stringlist functions

These have now landed upstream. The naming is different and in one case the
function signature has changed. Update the code to match.

This applies the following upstream commits by
Thierry Reding <treding@nvidia.com> :

604e61e fdt: Add functions to retrieve strings
8702bd1 fdt: Add a function to get the index of a string
2218387 fdt: Add a function to count strings

Signed-off-by: Simon Glass <sjg@chromium.org>

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Merge git://git.denx.de/u-boot-dm

Add a reset driver framework/uclass

A reset controller is a hardware module that controls reset signals that
affect other hardware modules or chips.

This patch defines a standard API that connects

Add a reset driver framework/uclass

A reset controller is a hardware module that controls reset signals that
affect other hardware modules or chips.

This patch defines a standard API that connects reset clients (i.e. the
drivers for devices affected by reset signals) to drivers for reset
controllers/providers. Initially, DT is the only supported method for
connecting the two.

The DT binding specification (reset.txt) was taken from Linux kernel
v4.5's Documentation/devicetree/bindings/reset/reset.txt.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>

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