This patch adds documentation for the Sipeed Maix bit, and more generally
for the Kendryte K210 processor.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Where possible, I have tried to find compatible drivers based on the layout
of registers. However, many devices remain untested. All untested devices
have been left disabled, but some tentative properties (such as compatible
strings, and clocks, interrupts, and resets properties) have been added.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
The cpu clock is probably already enabled if we are executing code (though
we could be executing from a different core). This patch prevents the cpu
clock or its parents from being disabled.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Instead of always using the "clock-frequency" property to determine cpu
frequency, try using a clock in "clocks" if it exists. This patch also
fixes a bug where there could be spurious higher frequencies if sizeof(u32)
!= sizeof(ulong).
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Currently, one cannot use a reset driver on RISC-V. Follow the MIPS
example, and disable the default reset handler when the sysreset driver is
enabled.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Some older processors (notably the Kendryte K210) use an older version of
the RISC-V privileged specification. The primary changes between the old
and new are in virtual memory, and in the merging of three separate counter
enable CSRs. Using the new CSR on an old processor causes an illegal
instruction exception. This patch adds an option to use the old CSRs
instead of the new one.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
The previous IPI code initialized the device whenever the first call was
made to a riscv_*_ipi function. This made it difficult to determine when
the IPI device was initialized. This patch introduces a new function
riscv_init_ipi. It is called once during arch_cpu_init_dm. In SPL, it is
called in spl_invoke_opensbi. Before this point, no riscv_*_ipi functions
should be called.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
On some platforms (k210), the previous stage bootloader may have not
cleared pending IPIs before transferring control to U-Boot. This can cause
race conditions, as multiple harts all attempt to initialize the IPI
controller at once. This patch clears IPIs before enabling them, ensuring
that only one hart modifies shared memory at once.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Rick Chen <rick@andestech.com>
This header depended on bd_t and ulong, but did not include the appropriate
headers.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This could give a confusing error message if it failed and didn't set
errno.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This patch adds a generic reset driver. It is designed to be useful when
one has a register in a regmap which contains bits that reset other
devices. I thought this seemed like a very generic use, so here is a
generic driver. The overall structure has been modeled on the syscon-reboot
driver.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
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>
This type of bus is used in Linux to designate buses which have power
domains and/or clocks which need to be enabled before their child devices
can be used. Because power domains are automatically enabled before probing
in U-Boot, we just need to enable any clocks present.
Signed-off-by: Sean Anderson <seanga2@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>
- Minor updates to some platforms I am the listed maintainer of.
Notably this removes the ti814x_evm which stopped building with the PXA
MMC migration series (oops) but hasn't been functional in some time.
The TI814x (DM814x) platform is rather old and in need of a lot of
migration work. As much of that work is well past the deadline, remove
this platform.
Signed-off-by: Tom Rini <trini@konsulko.com>
This platform is already using DM in general and the MMC controller is
the early generation of what is compatible with "ti,omap4-hsmmc" so
enable DM_MMC (which in turn gets BLK enabled).
Signed-off-by: Tom Rini <trini@konsulko.com>
Both the am335x_boneblack and am335x_evm_usbspl configs have been gone
for a while, remove their entries from MAINTAINERS.
Signed-off-by: Tom Rini <trini@konsulko.com>
- Makefile: add rule to build an endian-swapped U-Boot image
used by MIPS Malta EL variants
- CI: add Qemu tests for MIPS Malta
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Merge tag 'mips-pull-2020-06-29' of https://gitlab.denx.de/u-boot/custodians/u-boot-mips into next
- net: pcnet: cleanup and add DM support
- Makefile: add rule to build an endian-swapped U-Boot image
used by MIPS Malta EL variants
- CI: add Qemu tests for MIPS Malta
Clean-up platform data include file by using BIT macro and converting
indentation with spaces to tabs.
Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Add missing space before a comment delimiter.
Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Add Qemu tests for the MIPS Malta machine as a replacement for
the deprecated generic MIPS machine.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Add Qemu tests for the MIPS Malta machine as a replacement for
the deprecated generic MIPS machine.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Add Qemu tests for the MIPS Malta machine as a replacement for
the deprecated generic MIPS machine.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
The Qemu Malta machine expects the firmware in Big-Endian byte order.
Therefore the Little-Endian variants of the Malta board needs to
be byte swapped.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This rule generates an u-boot binary file where the byte endianness
is swapped. This will be used by the MIPS Malta Little-Endian variants
to be able to boot with Qemu. The Qemu Malta Machine expects the
firmware in Big-Endian order.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This can be used to swap the byte endianness of a binary file
from Little-Endian to Big-Endian or vice-versa.
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Add Kconfig entries for the pcnet driver and convert MIPS malta
to use those.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
With all the changes in place, add support for DM into the
pcnet driver.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Pull the common parts of functions out so they can be reused by both
DM and non-DM code paths. The recv() function had to be reworked to
fit into this scheme and this means it now only receives one packet
at a time instead of spinning in an endless loop.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Instead of using the non-DM-only name and enetaddr in struct eth_device,
add pointers into the private data which can either point to that non-DM
name or a DM one later on.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Instead of using the non-DM-only iobase in struct eth_device, add
one into the private data to make DM and non-DM operation possible.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Get rid of the global point to private data, and rather pass it
thought dev->priv. Also remove the unnecessary check for lp being
non-NULL, since it is always NULL at this point.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Instead of using eth_device priv for this PCI devbusfn, free it
so it could be used for driver private data, and wrap devbusfn
into those driver private data.
Note that using the name dev for the variable is a trick left for
later, when DM support is in place, so dm_pci_virt_to_mem() can be
used with minimal ifdeffery.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Remove those as they are not needed anymore.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Move the function at the end of the driver, so we could drop
various forward declarations later. No functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
The private data allocation does not have to be done every time the
NIC is initialized at run time, move the allocation to initialize
function, which means it will be done only once when the driver
starts.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
