Currently the setbrg logic of serial-mtk is messy, and should be rewritten.
Also an option is added to make it possible to use highspeed-3 mode for all
bauds.
The new logic is:
1. If baud clock > 12MHz
a) If baud <= 115200, highspeed-0 mode will be used (ns16550 compatible)
b) If baud <= 576000, highspeed-2 mode will be used
c) any bauds > 576000, highspeed-3 mode will be used
2. If baud clock <= 12MHz
Forced highspeed-3 mode
a) If baud <= 115200, calculates the divisor using DIV_ROUND_CLOSEST
b) any bauds > 115200, the same as 1. c)
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
A working device tree node of ns16550 should never be populated
with value zero for the <clock-frequency> property. Unfortunately
this is the case for the QEMU ppce500 target.
Let's try to assign plat->clock to CONFIG_SYS_NS16550_CLK as the
last resort to handle such case.
This commit should be reverted when:
- The following QEMU patch [1] is merged, and
- U-Boot CI has upgraded its QEMU version that contains the fix
[1] http://patchwork.ozlabs.org/project/qemu-devel/patch/1612362288-22216-2-git-send-email-bmeng.cn@gmail.com/
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Currently ns16550_serial_assign_base() treats the argument 'base'
with type `ulong`. This is incorrect because the base address was
obtained from device tree with type `fdt_addr_t` that can represent
a physical address larger than 32-bit in a 32-bit system.
Fixes: 9e6ce62190 ("serial: ns16550: Fix ordering of getting base address")
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Function next_urb() selects the last urb data buffer from linked list to
which next data from usbtty's puts function should be appended.
But to check if TX data still exists it is needed to look at the first urb
data buffer from linked list. So check for endpoint->tx_urb (first from the
linked list) instead of current_urb (the last from the linked list).
Successful call to udc_endpoint_write() may invalidate active urb and
allocate new urb in queue which invalidates pointer returned by next_urb()
function.
So call next_urb() prior putting data into urb buffer and call it every
time after using udc_endpoint_write() function to prevent sending data from
usbtty's puts function in incorrect order.
This patch fixes issue that usbtty code does not transmit data when they
are waiting in the tx queue.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
This function has incorrect implementation of prepending CR prior LF.
Without this patch it prepended CR prior whole string which is going to be
written and let LF without leading CR. Fix this issue by inserting CR at
correct place to make output on usbtty serial console more readable.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Lukasz Majewski <lukma@denx.de>
Acked-by: Pavel Machek <pavel@ucw.cz>
qspi:
- Support for dual/quad mode
- Fix speed handling
clk:
- Add clock enable function for zynq/zynqmp/versal
gem:
- Enable clock for Versal
- Fix error path
- Fix mdio deregistration path
fpga:
- Fix buffer alignment for ZynqMP
xilinx:
- Fix reset reason clearing in ZynqMP
- Show silicon version in SPL for Zynq/ZynqMP
- Fix DTB selection for ZynqMP
- Rename zc1275 to zcu1275 to match DT name
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Merge tag 'xilinx-for-v2021.04-rc3' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze
Xilinx changes for v2021.04-rc3
qspi:
- Support for dual/quad mode
- Fix speed handling
clk:
- Add clock enable function for zynq/zynqmp/versal
gem:
- Enable clock for Versal
- Fix error path
- Fix mdio deregistration path
fpga:
- Fix buffer alignment for ZynqMP
xilinx:
- Fix reset reason clearing in ZynqMP
- Show silicon version in SPL for Zynq/ZynqMP
- Fix DTB selection for ZynqMP
- Rename zc1275 to zcu1275 to match DT name
A lot of Xilinx drivers are checking -ENOSYS which means that clock driver
doesn't have enable function. Remove this checking from drivers and create
dummy enable function as was done for clk_fixed_rate driver by
commit 6bf6d81c11 ("clk: fixed_rate: add dummy enable() function").
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Currently support for the Samsung serial port driver is part
of CONFIG_S5P which controls selection of several drivers for
the S5P family. Give it its own config option such that we
can use it on other SoCs as well.
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Patrick Wildt <patrick@blueri.se>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This board has not been converted to CONFIG_DM_MMC by the deadline of
v2019.04, which is almost two years ago. In addition there are other DM
migrations it is also missing. Remove it.
Cc: Stefano Babic <sbabic@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Stefano Babic <sbabic@denx.de>
dev_read_addr() returns fdt_addr_t which is now a 64-bit address.
In a 32-bit build, this causes the following warning seen when
building serial_sifive.c:
warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
Cast the return value with uintptr_t.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
To check if some output characters are waiting either in Transmitter
Holding Register or Transmitter Shift Register we need to look at
TX_EMPTY bit of UART Status Register.
Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
This patch adds uart support for MediaTek MT7620 and earlier SoCs.
The UART used by MT7620 is incompatible with the ns16550a driver.
All registers of this UART have different addresses. A special 16-bit
register for Divisor Latch is used to set the baudrate instead of the
original two 8-bit registers (DLL and DLM).
The driver supports of-platdata which is useful for tiny SPL.
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
U-Boot DM model probe only single device at a time
which is enabled and configured using device tree
or platform data method.
PL011 UART IP is SBSA compliant and firmware does the
serial port set-up, initialization and let the kernel use
UART port for sending and receiving characters.
Normally software talk to one serial port time but some
LayerScape platform require all the UART devices enabled
in Linux for various use case.
Adding support to probe all enabled serial devices like SBSA
compliant PL011 UART ports probe and initialization by firmware.
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Sean Anderson <seanga2@gmail.com>
arm64:
- DT updates
microblaze:
- Add support for NOR device support
spi:
- Fix unaligned data write issue
nand:
- Minor code change
xilinx:
- Fru fix in limit calculation
- Fill git repo link for all Xilinx boards
video:
- Add support for seps525 spi display
tools:
- Minor Vitis file support
cmd/common
- Minor code indentation fixes
serial:
- Uartlite debug uart initialization fix
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Merge tag 'xilinx-for-v2021.04' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2021.04
arm64:
- DT updates
microblaze:
- Add support for NOR device support
spi:
- Fix unaligned data write issue
nand:
- Minor code change
xilinx:
- Fru fix in limit calculation
- Fill git repo link for all Xilinx boards
video:
- Add support for seps525 spi display
tools:
- Minor Vitis file support
cmd/common
- Minor code indentation fixes
serial:
- Uartlite debug uart initialization fix
Driver model: Rename U_BOOT_DEVICE et al.
dtoc: Tidy up and add more tests
ns16550 code clean-up
x86 and sandbox minor fixes for of-platdata
dtoc prepration for adding build-time instantiation
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Merge tag 'dm-pull-5jan21' of git://git.denx.de/u-boot-dm into next
Driver model: make some udevice fields private
Driver model: Rename U_BOOT_DEVICE et al.
dtoc: Tidy up and add more tests
ns16550 code clean-up
x86 and sandbox minor fixes for of-platdata
dtoc prepration for adding build-time instantiation
We use the U_BOOT_ prefix (i.e. U_BOOT_DRIVER) to declare a driver but
in every other case we just use DM_. Update the alias macros to use the
DM_ prefix.
We could perhaps rename U_BOOT_DRIVER() to DM_DRIVER(), but this macro
is widely used and there is at least some benefit to indicating it us a
U-Boot driver, particularly for code ported from Linux. So for now, let's
keep that name.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current macro is a misnomer since it does not declare a device
directly. Instead, it declares driver_info record which U-Boot uses at
runtime to create a device.
The distinction seems somewhat minor most of the time, but is becomes
quite confusing when we actually want to declare a device, with
of-platdata. We are left trying to distinguish between a device which
isn't actually device, and a device that is (perhaps an 'instance'?)
It seems better to rename this macro to describe what it actually is. The
macros is not widely used, since boards should use devicetree to declare
devices.
Rename it to U_BOOT_DRVINFO(), which indicates clearly that this is
declaring a new driver_info record, not a device.
Signed-off-by: Simon Glass <sjg@chromium.org>
At present flags are stored as part of the device. In preparation for
storing them separately, change the access to go through inline functions.
Signed-off-by: Simon Glass <sjg@chromium.org>
Move this struct into a header file so that dtoc can include it in its
dt-platdata.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Most drivers use these access methods but a few do not. Update them.
In some cases the access is not permitted, so mark those with a FIXME tag
for the maintainer to check.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Lower case should be used for function names. Update this driver and its
callers accordingly.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Typedefs should not be used in U-Boot and structs should be lower case.
Update the code to use struct ns16550 consistently.
Put a header guard on the file while we are here.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Endianness detection is checked against uninitialized ret variable.
Assign ret with read value from status register to fix this.
Fixes: 31a359f87e ("serial: uartlite: Add support to work with any endianness")
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
At present various drivers etc. access the device's 'seq' member directly.
This makes it harder to change the meaning of that member. Change access
to go through a function instead.
The drivers/i2c/lpc32xx_i2c.c file is left unchanged for now.
Signed-off-by: Simon Glass <sjg@chromium.org>
This name is far too long. Rename it to remove the 'data' bits. This makes
it consistent with the platdata->plat rename.
Signed-off-by: Simon Glass <sjg@chromium.org>
We use 'priv' for private data but often use 'platdata' for platform data.
We can't really use 'pdata' since that is ambiguous (it could mean private
or platform data).
Rename some of the latter variables to end with 'plat' for consistency.
Signed-off-by: Simon Glass <sjg@chromium.org>
This construct is quite long-winded. In earlier days it made some sense
since auto-allocation was a strange concept. But with driver model now
used pretty universally, we can shorten this to 'auto'. This reduces
verbosity and makes it easier to read.
Coincidentally it also ensures that every declaration is on one line,
thus making dtoc's job easier.
Signed-off-by: Simon Glass <sjg@chromium.org>
Rather than implementing our own circular queue, use membuff. This allows
us to read multiple bytes at once into the serial input.
Signed-off-by: Simon Glass <sjg@chromium.org>
CONFIG_OF_CONTROL is always enabled for sandbox (as it should be for all
boards), so we can drop it. Also use IS_ENABLED() for the SPL check.
Signed-off-by: Simon Glass <sjg@chromium.org>
Update Patrick and my email address with the one dedicated to
upstream activities.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
Since sandbox's SPL is build with of-platadata, we should not use
U_BOOT_DEVICE() declarations as well. Drop them.
Signed-off-by: Simon Glass <sjg@chromium.org>
There also a need to check return values to make sure that clocks were
enabled and setup properly.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
By using a hypervisor call, we can implement DEBUG_UART on xen.
This will allow us to see messages even earlier than serial_init().
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
At present, DM_FLAG_PRE_RELOC is set only if !OF_CONTROL.
It doesn't make sense for this para-virtualized driver.
With this patch applied, you will be able to see early boot messages:
U-Boot 2020.10-00001-ge442e71a6c52-dirty (Oct 15 2020 - 11:02:25 +0900)
xenguest
Xen virtual CPU
Model: XENVM-4.15
DRAM: 128 MiB
PVBLOCK:
(XEN) gnttab_mark_dirty not implemented yet
pvblock: 0
In: hypervisor
Out: hypervisor
Err: hypervisor
xenguest#
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
The sandbox is built with the SDL2 library with invokes the X11 library
which in turn calls getc(). But getc() in glibc is defined as
int getc(FILE *)
This does not match our definition.
int getc(void)
The sandbox crashes when called with parameter -l.
Rename our library symbol getc() to getchar().
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This endinness changes are taken from linux uartlite driver.
Reset TX fifo in control register and check TX fifo empty
flag in lower byte of the status register to detect if it
is a little endian system. Based on this check, program the
registers with le32 or be32 through out the driver.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Zynq/ZynqMP/Versal IPs should be possible to called also from Microblaze in
PL and vice versa. That's why change dependencies and do not limit enabling
just for some platforms.
This is follow up patch based on commit 664e16ce99 ("xilinx: kconfig:
Change Kconfig dependencies for Xilinx drivers").
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
If the SCIF is receiving data quickly enough, it may happen that the
SCxSR_RDxF flag is cleared in sh_serial_getc_generic(), while the
FIFO still contains data. If that happens, the serial_getc_check()
reports no data in the FIFO as the flag is no longer set. Add one
more check, if the SCxSR_RDxF is not set, read out the FIFO level
and if there are still characters in the FIFO, permit reading them
out.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
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>
