In case the ops is not implemented, return 0 in the core right away.
This is better than having multiple copies of functions which just
return 0 in each reset driver. Drop all those empty functions.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>

Changes devm_scmi_process_msg() first argument from target parent device
to current SCMI device and lookup the SCMI agent device among SCMI device
parents for find the SCMI agent operator needed for communication with
the firmware.

This change is needed in order to support CCF in clk_scmi driver unless
what CCF will fail to find the right udevice related to exposed SCMI
clocks.

This patch allows to simplify the caller sequence, using SCMI device
reference as parameter instead of knowing SCMI uclass topology. This
change also adds some protection in case devm_scmi_process_msg() API
function is called for an invalid device type.

Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>

Add a reset driver to bring IPs out of reset.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[Amjad: reset_ops structure member "free" has been renamed to "rfree",
use the latter instead]
Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>

Somewhere along the way, someone misspelt "invalid" and it got copied
everywhere. Fix it.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

Define LOG_CATEGORY to allow filtering with log command.

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>

The CCU header is only used by the DM drivers, not any platform code.
Its current location adds an artificial dependency on CONFIG_ARM and
ARCH_SUNXI, which will be problematic when adding the CCU driver for
a RISC-V sunxi platform.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

Signed-off-by: Wolfgang Denk <wd@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>

Signed-off-by: Wolfgang Denk <wd@denx.de>

Add firmware based reset controller for Xilinx ZynqMP SoC to let other
drivers to call reset functions. Driver is only tested on Xilinx ZynqMP but
support for Xilinx Versal can be simply added. That's why reset_id and
nr_reset are assigned in probe folder.
Driver is inpired by driver from Linux kernel.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

Fix missing reference operator '&' to correctly get
HW register addresses for writel().

Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>