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Currently arch specific headers can be included with
possible as there won't be a single mach anymore.
Move all Zynqmp specific header files to include/mach/zynqmp/ to
prepare for multi-arch support.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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"GPL-2.0-only" was introduced in SPDX 2.0, and the old identifier
"GPL-2.0" is now considered deprecated; see <https://spdx.org/licenses>.
Fixes: 28f4a6a4df76f0f1581d (2021-10-30, "drivers: add missing SPDX-License-Identifier")
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
Link: https://lore.barebox.org/20211117113851.2022669-2-rhi@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The pmu fw manages the permissions who can enable/disable the clocks.
There are a few clocks (TOPSW_LSBUS and LSBUS) which are exposed to
Barebox and Barebox assumes that is has to enable the clocks. However,
the pmu fw considers the clocks under its control and returns a
permission denied for the clock enable request.
Assume that clocks that are already enabled don't need to be enable by
Barebox to avoid the permission denied errors.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Link: https://lore.barebox.org/20210624150054.1205422-3-m.tretter@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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In Linux the ops in struct clk_ops take a struct clk_hw * argument
instead of a struct clk * argument as in barebox. With this taking
new clk drivers from Linux requires a lot of mechanical conversions.
Instead of doing this over and over again swallow the pill once and
convert the existing barebox code over to clk_hw.
The implementation is a little different from Linux. In Linux struct clk
is only known to the core clock code. In barebox struct clk is
publically known and it is embedded into struct clk_hw. This allows
us to still use struct clk members in the clock drivers which we
currently still need, because otherwise this patch would be even
bigger.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20210602095507.24609-5-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Linux has a clk_register() function with a different semantics than
barebox. Rename this function to bclk_register() so that we later
can introduce a clk_register() function with the same semantics as
Linux.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20210602095507.24609-4-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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The ZynqMP has a platform management unit (PMU) that is responsible for
managing the clocks. Therefore, the clock driver uses the firmware
driver to control the clocks.
The Barebox driver is based on the Linux driver, but contains deviations
to make the driver more readable and more consistent.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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