We have a test in dtoc for this feature, but not one in U-Boot itself.
Add a simple test that checks that the information comes through
correctly.
Signed-off-by: Simon Glass <sjg@chromium.org>
free() checks if its argument is NULL. No need to check it twice.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
The 12d152620d commit fixed the get_rate helper because the set_parent
one did not re-parent the clock device to the new parent. The 4d139f3838
commit allows you to remove this workaround by calling the
clk_get_parent_rate routine.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
This sync's the RZ/G2H clock tables with mainline linux 5.9 commit
bbf5c979011a ("Linux 5.9").
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
This sync's the RZ/G2N clock tables with mainline linux 5.9 commit
bbf5c979011a ("Linux 5.9").
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
This SoC has the 5th divisor for the mck0 master clock.
Adapt the characteristics accordingly.
Reported-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
clk-master can have 5 divisors with a field width of 3 bits
on some products.
Change the mask and number of divisors accordingly.
Reported-by: Mihai Sain <mihai.sain@microchip.com>
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
CONFIG_IS_ENABLED() takes the kconfig name without the CONFIG_ prefix,
e.g. CONFIG_IS_ENABLED(CLK) for CONFIG_CLK. Some of these were being
fixed every now and then, see:
commit 71ba2cb0d6 ("board: stm32mp1: correct CONFIG_IS_ENABLED usage for LED")
commit a5ada25e42 ("rockchip: clk: fix wrong CONFIG_IS_ENABLED handling")
commit 5daf6e56d3 ("common: console: Fix duplicated CONFIG in silent env callback")
commit 48bfc31b64 ("MIPS: bootm: Fix broken boot_env_legacy codepath")
Fix all files found by `git grep "CONFIG_IS_ENABLED(CONFIG"` by running
':%s/CONFIG_IS_ENABLED(CONFIG_\(\w+\))/CONFIG_IS_ENABLED(\1)/g' in vim.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add additional membus writes to configure main and peripheral PLL
for Agilex's clock manager.
Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Reviewed-by: Ley Foon Tan <ley.foon.tan@intel.com>
Since warm reset may optionally set the CLock Manager to'boot mode',
the clock driver should always force the Agilex's Clock Manager to
'boot mode' before the clock driver start configuring the Clock Manager
in SPL.
In SSBL, clock driver will skip the Clock Manager configuration
if it's already being setup by SPL (Clock Manager NOT in 'boot
mode') to prevent any inaccurate clocking issues happened on HPS
peripherals such as UART, MAC and etc.
Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
Some drivers probing failed if clock enable function is not supported in
clock driver. So, add clock enable function to clock driver to solve it.
Return 0 (success) for *.enable function because all clocks are enabled
by default in clock driver probe.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Signed-off-by: Chee Hong Ang <chee.hong.ang@intel.com>
The cell_count argument is required when cells_name is NULL.
This patch adds this parameter in live tree API
- of_count_phandle_with_args
- ofnode_count_phandle_with_args
- dev_count_phandle_with_args
This parameter solves issue when these API is used to count
the number of element of a cell without cell name. This parameter
allow to force the size cell.
For example:
count = dev_count_phandle_with_args(dev, "array", NULL, 3);
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Merge tag 'u-boot-atmel-2021.01-a' of https://gitlab.denx.de/u-boot/custodians/u-boot-atmel into next
First set of u-boot-atmel features for 2021.01 cycle:
This feature set includes a new CPU driver for at91 family, new driver
for PIT64B hardware timer, support for new at91 family SoC named sama7g5
which adds: clock support, including conversion of the clock tree to
CCF; SoC support in mach-at91, pinctrl and mmc drivers update. The
feature set also includes updates for mmc driver and some other minor
fixes and features regarding building without the old Atmel PIT and the
possibility to read a secondary MAC address from a second i2c EEPROM.
This change introduces a clock driver for SCMI agent devices. When
SCMI agent and SCMI clock drivers are enabled, SCMI agent binds a
clock device for each SCMI clock protocol devices enabled in the FDT.
SCMI clock driver is embedded upon CONFIG_CLK_SCMI=y. If enabled,
CONFIG_SCMI_AGENT is also enabled.
SCMI Clock protocol is defined in the SCMI specification [1].
Links: [1] https://developer.arm.com/architectures/system-architectures/software-standards/scmi
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Another "virtual" clock (in the sense that it isn't configurable). This
could possibly be done as a clock in the device tree, but I think this is a
bit cleaner.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
arm64:
- Support for bigger U-Boot images compiled with PIE
microblaze:
- Extend support for LE/BE systems
zynqmp:
- Refactor silicon ID detection code with using firmware interface
- Add support for saving variables based on bootmode
zynqmp-r5:
- Fix MPU mapping and defconfig setting.
xilinx:
- Minor driver changes: names alignment
- Enable UBIFS
- Minor DT and macros fixes
- Fix boot with appended DT
- Fix distro boot
cmd:
- pxe: Add fixing for platforms with manual relocation support
clk:
- fixed_rate: Add DM flag to support early boot on r5
fpga:
- zynqmppl: Use only firmware interface and enable SPL build
serial:
- uartlite: Enable for ARM systems and support endians
mmc:
- zynq: Fix indentation
net:
- gem: Support for multiple phys
- emac: Fix 64bit support and enable it for arm64
kconfig:
- Setup default values for Xilinx platforms
- Fix dependecies for Xilinx drivers
- Source board Kconfig only when platform is enabled
- Fix FPGA Kconfig entry with SPL
- Change some defconfig values
bindings:
- Add binding doc for vsc8531
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Merge tag 'xilinx-for-v2021.01' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2021.01
arm64:
- Support for bigger U-Boot images compiled with PIE
microblaze:
- Extend support for LE/BE systems
zynqmp:
- Refactor silicon ID detection code with using firmware interface
- Add support for saving variables based on bootmode
zynqmp-r5:
- Fix MPU mapping and defconfig setting.
xilinx:
- Minor driver changes: names alignment
- Enable UBIFS
- Minor DT and macros fixes
- Fix boot with appended DT
- Fix distro boot
cmd:
- pxe: Add fixing for platforms with manual relocation support
clk:
- fixed_rate: Add DM flag to support early boot on r5
fpga:
- zynqmppl: Use only firmware interface and enable SPL build
serial:
- uartlite: Enable for ARM systems and support endians
mmc:
- zynq: Fix indentation
net:
- gem: Support for multiple phys
- emac: Fix 64bit support and enable it for arm64
kconfig:
- Setup default values for Xilinx platforms
- Fix dependecies for Xilinx drivers
- Source board Kconfig only when platform is enabled
- Fix FPGA Kconfig entry with SPL
- Change some defconfig values
bindings:
- Add binding doc for vsc8531
fixed-rate driver is not different from clk_fixed_factor and it is required
very early in boot that's why setup flag for it.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
The most of drivers are using '_' instead of '-' in driver name. That's why
sync up these names to be aligned. It looks quite bad to see both in use.
It is visible via dm tree command.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add UTMI support for SAMA7G5. SAMA7G5's UTMI control is done via
XTALF register. Values written at bits 2..0 in this register
correspond to the on board crystal oscillator frequency.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Add master clock (MCK1..MCK4) support for SAMA7G5. SAMA7G5's PMC has
multiple master clocks feeding different subsystems. One of them
feeds image subsystem and is changeable based on image subsystem
needs.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Add sckc driver compatible with common clock framework. Driver
implements slow clock support for SAM9X60 compatible IPs (in this
list it is also present SAMA7G5's slow clock IP).
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Move clock code to compat.c to allow switching to CCF
without mixing CCF code with non CCF code. This prepares the
field for next commits.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Add helper for clock drivers. These will be used by following
commits in the process of switching AT91 clock drivers to CCF.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
clk_get_by_indexed_prop() retrieves a clock with dev member being set
with the pointer to the udevice for the clock controller driver. But
in case of CCF each clock driver has set in dev member the reference
to its parent (the root of the clock tree is a fixed clock, every
node in clock tree is a clock registered with clk_register()). In this
case the subsequent operations like dev_get_clk_ptr() on clocks
retrieved by clk_get_by_indexed_prop() will fail. For this, get the
pointer to the proper clock registered (with clk_register()) using
clk_get_by_id() before proceeding.
Fixes: 1d7993d1d0 ("clk: Port Linux common clock framework [CCF] for imx6q to U-boot (tag: v5.1.12)")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Clock re-parenting is not binding the clock's device to its new
parent device, it only calls the clock's ops->set_parent() API. The
changes in this commit re-parent the clock device to its new parent
so that subsequent operations like clk_get_parent() to point to the
proper parent.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
v2: modify title description aspeed:clock -> clock:aspeed
Use kernel include/dt-bindings/clock/aspeed-clock.h define
for clock driver.
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Reviewed-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com>
Rename the ast2500-scu.h to aspeed-clock.h.
Signed-off-by: Ryan Chen <ryan_chen@aspeedtech.com>
Reviewed-by: Chia-Wei, Wang <chiawei_wang@aspeedtech.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
- Add CCF clocks definitions for iMX6Q enet (ETH)
- Several fixes for CCF framework - the most notable is the one, which
adds get_rate helper to clk-mux.c
- Improvements for clk command - better visibility and alignment.
After adding custom get_rate helper function it was necessary to include
<dm/uclass.h> to avoid warnings about missing uclass_get_device_by_name.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Series-to: u-boot
The previous version of the get_rate helper does not work if the mux
clock parent is changed after the probe. This error has not been
detected because this condition has not been tested. The error occurs
because the set_parent helper does not change the parent of the clock
device but only the clock selection register. Since changing the parent
of a probed device can be tricky, the new version of the get_rate helper
provides the rate of the selected clock and not that of the parent.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
The tests developed for the mux clock are run on the sandbox. They don't
call the clk_mux_set_parent routine and therefore they do not detect
this error.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
The parent->name variable can be used only in case the
uclass_get_device_by_name routine returns successfully.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
The top-level framework flags are passed as parameter to the common
clock framework (ccf) registration routines without being used.
Checks of the flags setting added by the patch have been added in the
ccf test.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Unlike the other clock types, in the case of the gated clock, a new
driver has been developed which does not use the registering routine
provided by the common clock framework.
The addition of the ecspi0 clock to sandbox therefore allows testing
the ccf gate clock.
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Simon Glass <sjg@chromium.org>
After commit 673f659732 ("net: fec_mxc: support i.MX8M with CLK_CCF") all
NXP boards, which are not IMX8 and in the same time are supporting CCF need
to provide PTP clock.
On the i.MX6Q this clock is provided with IMX6QDL_CLK_ENET_REF in the Linux
kernel's CCF.
Code in this change models the simplest case when enet reference clock is
generated from 'osc' clock.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This code has been ported from Linux kernel v5.5.5 (tag) and has been
adjusted to U-Boot's DM.
It adds support for correct recognition of IMX_PLLV3_ENET flag in the
clk-pllv3.c driver.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
After commit 673f659732 ("net: fec_mxc: support i.MX8M with CLK_CCF") all
NXP boards, which are not IMX8 and in the same time are supporting CCF
need to provide IMX6QDL_CLK_ENET.
This change defines the missing clock in i.MX6Q's CCF.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Do not calculate a unused value of n which is overwritten in both branches
of the subsequent if statement.
Identified by cppcheck.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
When you enable CONFIG_OF_LIVE, you will end up with a lot of
conversions.
To help this tedious work, this commit converts devfdt_get_addr_ptr()
to dev_read_addr_ptr() by coccinelle. I also removed redundant casts
because dev_read_addr_ptr() returns an opaque pointer.
To generate this commit, I ran the following semantic patch
excluding include/dm/.
<smpl>
@@
type T;
expression dev;
@@
-(T *)devfdt_get_addr_ptr(dev)
+dev_read_addr_ptr(dev)
@@
expression dev;
@@
-devfdt_get_addr_ptr(dev)
+dev_read_addr_ptr(dev)
</smpl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
According to the description of devfdt_get_addr_ptr, this function should
return NULL on failure, but currently it returns (void *)FDT_ADDR_T_NONE.
Fix this by making devfdt_get_addr_ptr return NULL on failure, as
described in the function comments. Also, update the drivers currently
checking (void *)FDT_ADDR_T_NONE to check for NULL.
Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
There is no reason to have firmware specific structure in clock driver.
Move it to generic location and also initialize enum values which is based
on https://lore.kernel.org/linux-arm-kernel/20200318125003.GA2727094@kroah.com/
recommended way to go to make sure that values guaranteed by compiler.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This patch adds pciesys support in clock driver for
MediaTek MT7622 SoC.
Signed-off-by: Henry Yen <henry.yen@mediatek.com>
Signed-off-by: Chuanjia Liu <Chuanjia.Liu@mediatek.com>
This header file should not be included in other header files. Remove it
and use a forward declaration and un-inlining of dev_get_clk_ptr()
instead.
Fix up the kendryte header files to avoid build errors.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
PRCI module within SiFive SoC's has register with which we can
reset the sub-systems within the SoC. The resets to DDR and ethernet
sub systems within FU540-C000 SoC are active low, and are hold low
by default on power-up. Currently these are directly asserted within
prci driver via register read/write.
With the DM based reset driver support here, we bind the reset
driver with clock (prci) driver and assert the reset signals of
both sub-system's appropriately.
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
Reviewed-by: Pragnesh Patel <Pragnesh.patel@sifive.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Indexes of reset signals available in PRCI driver are also
defined in include/dt-bindings/reset/sifive-fu540-prci.h.
So use those instead of defining new ones again within the
fu540-prci driver.
Signed-off-by: Sagar Shrikant Kadam <sagar.kadam@sifive.com>
Reviewed-by: Pragnesh Patel <pragnesh.patel@sifive.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
This patch adds a simple clock driver for the Marvell Octeon MIPS SoC
family. Its for IO clock rate passing via DT in some of the Octeon
driver, like I2C. So that we don't need to use the non-mainline API
octeon_get_io_clock().
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Lukasz Majewski <lukma@denx.de>
When you enable CONFIG_OF_LIVE, you will end up with a lot of
conversions.
To generate this commit, I used coccinelle excluding drivers/core/,
include/dm/, and test/
The semantic patch that makes this change is as follows:
<smpl>
@@
expression dev;
@@
-devfdt_get_addr(dev)
+dev_read_addr(dev)
</smpl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Use the _ptr suffixed variant instead of casting. Also, convert it to
dev_read_addr_ptr(), which is safe to CONFIG_OF_LIVE.
One curious part is an error check like follows in
drivers/watchdog/omap_wdt.c:
priv->regs = (struct wd_timer *)devfdt_get_addr(dev);
if (!priv->regs)
return -EINVAL;
devfdt_get_addr() returns FDT_ADDR_T_NONE (i.e. -1) on error.
So, this code does not catch any error in DT parsing.
dev_read_addr_ptr() returns NULL on error, so this error check
will work.
I generated this commit by the following command:
$ find . -name .git -prune -o -name '*.[ch]' -type f -print | \
xargs sed -i -e 's/([^*)]*\*)devfdt_get_addr(/dev_read_addr_ptr(/'
I manually fixed drivers/usb/host/ehci-mx6.c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This sync's the clock tables with the official release from
Linux 5.8-RC2 and update r8a774a1_mstp_table from Ref Manual
v1.00.
Signed-off-by: Adam Ford <aford173@gmail.com>
Add SPI support for the RK3328 clock driver
Signed-off-by: Johannes Krottmayer <krjdev@gmail.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
When you enable CONFIG_OF_LIVE, you will end up with a lot of
conversions.
To generate this commit, I used coccinelle excluding drivers/core/,
include/dm/, and test/
The semantic patch that makes this change is as follows:
<smpl>
@@
expression dev;
@@
-devfdt_get_addr(dev)
+dev_read_addr(dev)
</smpl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Use the _ptr suffixed variant instead of casting. Also, convert it to
dev_read_addr_ptr(), which is safe to CONFIG_OF_LIVE.
One curious part is an error check like follows in
drivers/watchdog/omap_wdt.c:
priv->regs = (struct wd_timer *)devfdt_get_addr(dev);
if (!priv->regs)
return -EINVAL;
devfdt_get_addr() returns FDT_ADDR_T_NONE (i.e. -1) on error.
So, this code does not catch any error in DT parsing.
dev_read_addr_ptr() returns NULL on error, so this error check
will work.
I generated this commit by the following command:
$ find . -name .git -prune -o -name '*.[ch]' -type f -print | \
xargs sed -i -e 's/([^*)]*\*)devfdt_get_addr(/dev_read_addr_ptr(/'
I manually fixed drivers/usb/host/ehci-mx6.c
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
We use non-dm code to configure the clk settings in order to simplify
dm clk driver in future, so remove the duplicated code from clk driver
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Add clocks for FEC and flexspi, and add set parent clock callback,
so DTS can assign clocks
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Add USB relevant clocks to support usb clock settings for both
DM USB host and gadget drivers
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Add set clock parent support.
Add ENET and flexspi related clocks to support assigned clocks
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
In the current implementation, when dtoc parses a dtb to generate a struct
platdata it converts the information related to linked nodes as pointers
to struct platdata of destination nodes. By doing this, it makes
difficult to get pointer to udevices created based on these
information.
This patch extends dtoc to use struct driver_info when populating
information about linked nodes, which makes it easier to later get
the devices created. In this context, reimplement functions like
clk_get_by_index_platdata() which made use of the previous approach.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Currently when using OF_PLATDATA the binding between devices and drivers
is done trying to match the compatible string in the node with a driver
name. However, usually a single driver supports multiple compatible strings
which causes that only devices which its compatible string matches a
driver name get bound.
To overcome this issue, this patch adds the U_BOOT_DRIVER_ALIAS macro,
which generates no code at all, but allows an easy way to declare driver
name aliases. Thanks to this, dtoc could be improve to look for the driver
name based on its alias when it populates the U_BOOT_DEVICE entry.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
When using OF_PLATDATA, the bind process between devices and drivers
is performed trying to match compatible string with driver names.
However driver names are not strictly defined, and also there are different
names used when declaring a driver with U_BOOT_DRIVER, the name of the
symbol used in the linker list and the used in the struct driver_info.
In order to make things a bit more clear, rename the drivers names. This
will also help for further OF_PLATDATA improvements, such as checking
for valid driver names.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Add a fix for sandbox of-platdata to avoid using an invalid ANSI colour:
Signed-off-by: Simon Glass <sjg@chromium.org>
This commit adds clocks needed for ethernet operations for
Actions OWL family of SoCs (S700 and S900).
Signed-off-by: Amit Singh Tomar <amittomer25@gmail.com>
Add a weak functions to save the vddcore voltage value provided
in the OPP node when the clock tree is initialized.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
The PLL1 node (st,pll1) is optional in device tree, the max supported
frequency define in OPP node is used when the node is absent.
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
dev_read_addr_ptr had different semantics depending on whether OF_LIVE was
enabled. This patch converts both implementations to return NULL on error,
and converts all call sites which check for FDT_ADDR_T_NONE to check for
NULL instead. This patch also removes the call to map_physmem, since we
have dev_remap_addr* for those semantics.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Due to the large number of clocks, I decided to use the CCF. The overall
structure is modeled after the imx code. Clocks parameters are stored in
several arrays, and are then instantiated at run-time. There are some
translation macros (FOOIFY()) which allow for more dense packing.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
CC: Lukasz Majewski <lukma@denx.de>
This is a small driver to do a software bypass of a clock if hardware
bypass is not working. I have tried to write this in a generic fashion, so
that it could be potentially broken out of the kendryte code at some future
date. For the K210, it is used to have aclk bypass pll0 and use in0 instead
so that the CPU keeps on working.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
CC: Lukasz Majewski <lukma@denx.de>
This pll code is primarily based on the code from the kendryte standalone
sdk in lib/drivers/sysctl.c. k210_pll_calc_config is roughly analogous to
the algorithm used to set the pll frequency, but it has been completely
rewritten to be fixed-point based.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
CC: Lukasz Majewski <lukma@denx.de>
clk_get_by_index_nodev only ever fetched clock 1, due to passing a boolean
predicate instead of the index. Other clk_get_by_* functions got the clock
correctly, but passed a predicate instead of the index to clk_get_by_tail.
This could lead to confusing error messages.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
CC: Lukasz Majewski <lukma@denx.de>
clk_composite_ops was shared between all devices in the composite clock
driver. If one clock had a feature (such as supporting set_parent) which
another clock did not, it could call a null pointer dereference.
This patch does three things
1. It adds null-pointer checks to all composite clock functions.
2. It makes clk_composite_ops const and sets its functions at compile-time.
3. It adds some basic sanity checks to num_parents.
The combined effect of these changes is that any of mux, rate, or gate can
be NULL, and composite clocks will still function normally. Previously, at
least mux had to exist, since clk_composite_get_parent was used to
determine the parent for clk_register.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
CCF clocks should always use the struct clock passed to their methods for
extracting the driver-specific clock information struct. Previously, many
functions would use the clk->dev->priv if the device was bound. This could
cause problems with composite clocks. The individual clocks in a composite
clock did not have the ->dev field filled in. This was fine, because the
device-specific clock information would be used. However, since there was
no ->dev, there was no way to get the parent clock. This caused the
recalc_rate method of the CCF divider clock to fail. One option would be to
use the clk->priv field to get the composite clock and from there get the
appropriate parent device. However, this would tie the implementation to
the composite clock. In general, different devices should not rely on the
contents of ->priv from another device.
The simple solution to this problem is to just always use the supplied
struct clock. The composite clock now fills in the ->dev pointer of its
child clocks. This allows child clocks to make calls like clk_get_parent()
without issue.
imx avoided the above problem by using a custom get_rate function with
composite clocks.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Acked-by: Lukasz Majewski <lukma@denx.de>
