Simon Glass <sjg@chromium.org> says:
When the SPL build-phase was first created it was designed to solve a
particular problem (the need to init SDRAM so that U-Boot proper could
be loaded). It has since expanded to become an important part of U-Boot,
with three phases now present: TPL, VPL and SPL
Due to this history, the term 'SPL' is used to mean both a particular
phase (the one before U-Boot proper) and all the non-proper phases.
This has become confusing.
For a similar reason CONFIG_SPL_BUILD is set to 'y' for all 'SPL'
phases, not just SPL. So code which can only be compiled for actual SPL,
for example, must use something like this:
#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD)
In Makefiles we have similar issues. SPL_ has been used as a variable
which expands to either SPL_ or nothing, to chose between options like
CONFIG_BLK and CONFIG_SPL_BLK. When TPL appeared, a new SPL_TPL variable
was created which expanded to 'SPL_', 'TPL_' or nothing. Later it was
updated to support 'VPL_' as well.
This series starts a change in terminology and usage to resolve the
above issues:
- The word 'xPL' is used instead of 'SPL' to mean a non-proper build
- A new CONFIG_XPL_BUILD define indicates that the current build is an
'xPL' build
- The existing CONFIG_SPL_BUILD is changed to mean SPL; it is not now
defined for TPL and VPL phases
- The existing SPL_ Makefile variable is renamed to SPL_
- The existing SPL_TPL Makefile variable is renamed to PHASE_
It should be noted that xpl_phase() can generally be used instead of
the above CONFIGs without a code-space or run-time penalty.
This series does not attempt to convert all of U-Boot to use this new
terminology but it makes a start. In particular, renaming spl.h and
common/spl seems like a bridge too far at this point.
The series is fully bisectable. It has also been checked to ensure there
are no code-size changes on any commit.
Use PHASE_ as the symbol to select a particular XPL build. This means
that SPL_TPL_ is no-longer set.
Update the comment in bootstage to refer to this symbol, instead of
SPL_
Signed-off-by: Simon Glass <sjg@chromium.org>
The SSCG is active with MDSEL[12] is not set. Previous commit
99c7e03119 ("clk: renesas: rcar-gen3: Replace SSCG caching
with MDSEL/PE caching") inverted the conditional assignment
of priv->sscg = !(cpg_mode & BIT(12)) during conversion from
(priv->sscg ? 16 : 0) to priv->cpg_mode & BIT(core->offset) ? 16 : 0;
Invert the assignment back to the correct state.
This fixes R8A77980, R8A77990, R8A77995 and R8A774C0.
Fixes: 99c7e03119 ("clk: renesas: rcar-gen3: Replace SSCG caching with MDSEL/PE caching")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Add support for dumping a few of the clocks used on Qualcomm platforms.
Naming the Global PLL's, Root Clock Generators, and gate clocks.
This helps a lot with platform bringup and feature enablement by making
it easy to sanity check that the clocks are programmed correctly.
== Usage ==
Enable CONFIG_CMD_CLK and "#define LOG_DEBUG" at the top of
qcom-<soc>.c.
The "clk dump" command should print the states of all the gates, GPLLs
and RCGs for your SoC.
== Glossary ==
RCG: Root Clock Generator
* Takes in some fairly arbitrary high freq clock (configurable clock
source and options for taking just even pulses and other things)
* Output frequency = input_freq * (m/n) * (1/d) where m/n are arbitrary
8 or 16-bit values (depending on the RCG), and d is a number (with
support for .5 offsets).
GPLL: Global Phase Locked Loop
* Crystal as input
* integer multiplier + exponent part (2^-40)
Gate: Simple on/off clock
* Put between RCGs and the peripherals they power
* Required to allow for correct power sequencing
If you do the maths manually using the equations from "clk dump", the
numbers should roughly line up by they're likely to be out by a handful
of MHz. They output is formatted so that it can be pasted directly into
the python interpreter.
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Add clock, reset and power domain driver for SM8150. Driver code is
based on the similar U-Boot drivers. All constants are taken from the
corresponding Linux driver.
This driver supports clock rate setting only debug UART,
RGMII/Ethernet modules and USB controller.
Co-authored-by: Volodymyr Babchuk <volodymyr_babchuk@epam.com>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Julius Lehmann <lehmanju@devpi.de>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
The existing code is unnecessarily convoluted:
Arrays __prci_init_clocks_fu[5|7]40 are initialized with data.
In separate includes fu[5|7]40-prci.h the size of the arrays is provided as
constants.
By moving the structures prci_clk_fu[5|7]40 to the respective code modules
we can directly use ARRAY_SIZE() to access the size of the data used for
initialization.
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
If multiple messages are written, line-feeds improve the readability.
Fixes: c40b6df87f ("clk: Add SiFive FU540 PRCI clock driver")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
We don't actually need any clocks to get UFS up and running, resets are
useful though.
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Provide a function to locate this information, rather than doing it
automatically on startup, to save space in global_data.
Signed-off-by: Simon Glass <sjg@chromium.org>
Only m68k and powerpc use this field, so move it to the arch-specific
info, to reduce the size for other archs.
Signed-off-by: Simon Glass <sjg@chromium.org>
Christian Marangi <ansuelsmth@gmail.com> says:
These are all the required patches to migrate clk and correctly support
OF_UPSTREAM. This will align the clk index to upstream to support the same
clk implementation with downstream and upstream DTS.
Add missing PERIBUS_SEL clock to match upstream linux clk ID order. Also
convert pericfg to mux + gate implementation as now we have also mux on
top of gates.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add missing clock PERI_UART4_PD for peri clock gates. This is needed to
match upstream linux clk ID in preparation for OF_UPSTREAM.
Also convert infracfg to mux + gate implementation as now we have mux on
top of gates.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add missing infra clock MUX1_SEL needed for CPU clock. This is needed to
match the upstream clk ID order in preparation for OF_UPSTREAM.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add missing clock for MAIN_CORE_EN. This is a special clock as it's a
gate for the APMIXED clocks required as a parent for CPU clocks.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Move INFRA_TRNG clock to the bottom of the clk ID to match upstream
linux order. This is in preparation of OF_UPSTREAM.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Fix broken peri_cgs clock with XTAL parents as they have wrong
definition of the parent type.
Correctly fix them and use CLK_PARENT_XTAL for them.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Christian Marangi <ansuelsmth@gmail.com> says:
These are all the required patches to migrate clk and correctly support
OF_UPSTREAM. This will align the clk index to upstream to support the same
clk implementation with downstream and upstream DTS.
Rename each entry from CK to CLK to match the include in upstream kernel
linux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Convert to infracfg gates + muxes implementation now that it's
supported.
Drop infracfg-ao nodes and rename all infracfg-ao clocks to infracfg.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Replace infracfg clk ID with upstream linux version.
The same format is used here with the factor first, then mux and then
gates.
To correctly reference the gates in clk_gate function, define the
gates_offs value in clk_tree now that they are at an offset from mux and
factor.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Comment out CK_TOP_A_TUNER as not used and not defined in upstream
kernel linux. This is to permit support of OF_UPSTREAM and have a 1:1
match with upstream linux clock ID.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Now that we can have advanced parent handling for mux, we can drop
spurious topckgen 1/1 factor. This is in preparation to make the clk
ID match the ID in upstream include for mt7986.
Drop the factor entry from mt7986-clk.h and reference to them in
mt7981.dtsi. Muxes and gates are updated to reference the apmixed clk
following how it's done in upstream kernel linux. Add relevant clk type
flag in clk_tree for apmixed.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reorder TOPCKGEN factor ID to put TOP_FACTOR first and then PLL. This is
to match how it's done in upstream kernel linux and in preparation for
OF_UPSTREAM support.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Rename TOPCKGEN factor clock to upstream neaming.
Upstream kernel linux reference the factor clock for apmixedpll with the
"pll" suffix. Align the naming to the upstream naming format in
preparation for OF_UPSTREAM support.
Also rename rtc clock to drop the CB_ as upstream doesn't have that.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Add missing entry for IPCIE_PIPE_CK infra gate clock. Renumber the clock
order to match the expected offset in the gate array.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Now that we can have advanced parent handling for mux, we can drop
spurious infracfg 1/1 factor. This is in preparation to make the clk
ID match the ID in upstream include for mt7986.
Drop the factor entry from mt7986-clk.h and reference to them in
mt7981.dtsi. Muxes and gates are updated to reference the topckgen clk
following how it's done in upstream kernel linux. Add relevant clk type
flag in clk_tree for infracfg and topckgen.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Fix wrong parent for INFRA_ADC_26M_CK as should be INFRA_ADC_FRC_CK
instead of INFRA_CK_F26M. This is to match implementation on upstream
kernel linux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Upstream kernel linux clock include use SYSAXI_D2 instead of 66M_MCK.
Rename this clock to the upstream kernel in preparation for support of
OF_UPSTREAM.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Upstream kernel linux clock include use TOP_XTAL instead of CB_CKSQ_40M.
Rename this clock to the upstream kernel in preparation for support of
OF_UPSTREAM.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Fix wrong shift for PCIe clocks. This cause the PCIe port to malfunction
as the gate clocks weren't correctly enabled.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Christian Marangi <ansuelsmth@gmail.com> says:
These are all the required patches to migrate clk and correctly support
OF_UPSTREAM. This will align the clk index to upstream to support the same
clk implementation with downstream and upstream DTS.
Rename each entry from CK to CLK to match the include in upstream kernel
linux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
Convert to infracfg gates + muxes implementation now that it's
supported.
Drop infracfg-ao nodes and rename all infracfg-ao clocks to infracfg.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Replace infracfg clk ID with upstream linux version.
The same format is used here with the factor first, then mux and then
gates.
To correctly reference the gates in clk_gate function, define the
gates_offs value in clk_tree now that they are at an offset from mux and
factor.
Drop any comment that reference the clock ID as we now have a 1:1 match
with upstream kernel linux.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Comment out infracfg clk not defined in upstream kernel linux clock ID
include. These clock are not used and can be safely commented. Keep them
just to have a reference of their existence.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
