Commit graph

638 commits

Author SHA1 Message Date
Heiko Schocher
17fa032671 serial, ns16550: bugfix: ns16550 fifo not enabled
commit: 65f83802b7 "serial: 16550: Add getfcr accessor"
breaks u-boot commandline working with long commands
sending to the board.

Since the above patch, you have to setup the fcr register.

For board/archs which enable OF_PLATDATA, the new field
fcr in struct ns16550_platdata is not filled with a
default value ...

This leads in not setting up the uarts fifo, which ends
in problems, when you send long commands to u-boots
commandline.

Detected this issue with automated tbot tests on am335x
based shc board.

The error does not popup, if you type commands. You need
to copy&paste a long command to u-boots commandshell
(or send a long command with tbot)

Possible boards/plattforms with problems:
./arch/arm/cpu/arm926ejs/lpc32xx/devices.c
./arch/arm/mach-tegra/board.c
./board/overo/overo.c
./board/quipos/cairo/cairo.c
./board/logicpd/omap3som/omap3logic.c
./board/logicpd/zoom1/zoom1.c
./board/timll/devkit8000/devkit8000.c
./board/lg/sniper/sniper.c
./board/ti/beagle/beagle.c
./drivers/serial/serial_rockchip.c

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Tested-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-01-20 09:15:19 -05:00
Tom Rini
7f73ca484f Kconfig: CONFIG_OF_PLATDATA doesn't really exist
There is no CONFIG_OF_PLATDATA, only CONFIG_SPL_OF_PLATDATA, so rename
the two references to CONFIG_OF_PLATDATA to CONFIG_SPL_OF_PLATDATA.

Signed-off-by: Tom Rini <trini@konsulko.com>
2017-01-14 12:20:23 -05:00
Marek Vasut
0b060eefd9 serial: 16550: Add Ingenic JZ4780 support
Add compatibility string for the Ingenic JZ4780 SoC, the necessary
UART enable bit into FCR and register shift. Neither are encoded
in the DTS coming from Linux, so we need to support it this way.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:37 -05:00
Marek Vasut
79fd928188 serial: 16550: Add port type as driver data
Add driver data to each compatible string to identify the type of
the port. Since all the ports in the driver are entirely compatible
with 16550 for now, all are marked with PORT_NS16550. But, there
are ports which have specific quirks, like the JZ4780 UART, which
do not have any DT property to denote the quirks. Instead, Linux
uses the compatible string to discern such ports and enable the
necessary quirks.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:37 -05:00
Marek Vasut
65f83802b7 serial: 16550: Add getfcr accessor
Add function which allows fetching the default FCR register setting
from platform data for DM , while retaining old behavior for non-DM
by returning UART_FCRVAL.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:36 -05:00
Patrick Bruenn
98d62e618b arm: imx: add i.MX53 Beckhoff CX9020 Embedded PC
Add CX9020 board based on mx53loco.
Add simplified imx53 base device tree from kernel v4.8-rc8, to reuse
serial_mxc with DTE and prepare for device tree migration of other
functions and imx53 devices.

The CX9020 differs from i.MX53 Quick Start Board by:
- use uart2 instead of uart1
- DVI-D connector instead of VGA
- no audio
- CCAT FPGA connected to emi
- enable rtc

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
2016-12-16 12:57:12 +01:00
Simon Glass
ebb2c53585 serial: Drop the s3c24x0 serial driver
This is not used by any boards. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: David Müller <d.mueller@elsoft.ch>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-04 13:55:00 -05:00
Fabian Vogt
cb97ad47bf serial: bcm283x_mu: support disabling after initialization
For the Raspberry Pi 3 it needs to be possible to disable the serial
device after initialization happens, as only after the GPIO device is available
it is known whether the mini uart is usable.

Signed-off-by: Fabian Vogt <fvogt@suse.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-28 20:09:50 -05:00
Fabian Vogt
165316e38f serial: pl01x: expose skip_init platdata option in DT
To be able to represent the skip-init platdata element with OF_CONTROL,
it needs to be read from the device tree as well and put into the platform data.

Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Fabian Vogt <fvogt@suse.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-28 20:09:47 -05:00
Fabian Vogt
9f755f5d09 serial: bcm283x_mu: add device tree support
This patch adds device tree support for the bcm283x mini-uart driver.

Signed-off-by: Fabian Vogt <fvogt@suse.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-11-28 20:09:46 -05:00
Tom Rini
ed77ccd014 Merge git://git.denx.de/u-boot-fsl-qoriq
Signed-off-by: Tom Rini <trini@konsulko.com>

Conflicts:
	arch/arm/Kconfig
2016-11-25 17:39:54 -05:00
Marcel Ziswiler
cbfa67a16b serial: pxa: integrate optional driver model handling
Optional driver model handling integration.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2016-11-23 13:53:20 +01:00
Marcel Ziswiler
d804a5e1c3 serial: pxa: use kconfig for serial configuration
Migrate the PXA serial driver to be configured via Kconfig.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Marek Vasut <marex@denx.de>
2016-11-23 13:53:20 +01:00
Shaohui Xie
9b46213b4f lpuart: add a get_lpuart_clk function
It's not always true that LPUART clock is CONFIG_SYS_CLK_FREQ. This
patch provides a weak function get_lpuart_clk(), so that the clock
can be ovreridden on a specific board which uses different clock
for LPUART.

Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
[YS: Reformat commit message]
Reviewed-by: York Sun <york.sun@nxp.com>
2016-11-21 09:20:32 -08:00
Tom Rini
1df182ddf7 Merge branch 'master' of git://git.denx.de/u-boot-atmel 2016-10-28 14:14:18 -04:00
Wenyou Yang
998cf3c2be serial: atmel_usart: Support enable an early debug UART
Add support to enable an early debug UART for debugging.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-10-28 18:37:15 +02:00
Wenyou Yang
6ec739aa52 serial: Kconfig: Add ATMEL_USART option
Add ATMEL_USART option to support to enable the Atmel usart driver
from Kconfig.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
2016-10-28 18:37:15 +02:00
Tom Rini
4f892924d2 Merge branch 'master' of git://www.denx.de/git/u-boot-imx
Signed-off-by: Tom Rini <trini@konsulko.com>

Conflicts:
	common/Kconfig
	configs/dms-ba16_defconfig
2016-10-28 11:12:03 -04:00
Jagan Teki
8829e662ce serial: Kconfig: Add MXC_UART entry
Added kconfig for MXC_UART driver.

Cc: Simon Glass <sjg@chromium.org>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-10-26 16:53:16 +02:00
Simon Glass
869588decd Convert CONFIG_SYS_STDIO_DEREGISTER to Kconfig
This converts the following to Kconfig:
   CONFIG_SYS_STDIO_DEREGISTER

This option should never be enabled in SPL, so use
CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) when checking the option.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Re-sync]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-10-23 18:34:17 -04:00
Tom Rini
f5fd45ff64 Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2016-10-08 09:33:37 -04:00
Masahiro Yamada
021abf696f Revert "ns16650: Make sure we have CONFIG_CLK set before using infrastructure"
This reverts commit 82f5279b0c.

The build failure of k2*evm boards was fixed in a different way by
the previous commit.  It is nasty to patch generic drivers around
with #ifdef CONFIG_CLK just for the KeyStone's matter.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-10-08 09:33:31 -04:00
Stefan Agner
a99546ab62 dm: imx: serial: support device tree
Support instatiation through device tree. Also parse the fsl,dte-mode
property to determine whether DTE mode shall be used.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-10-07 12:26:14 +02:00
Alexandre Courbot
ab895d6af2 serial: ns16550: Handle -ENOENT when requesting clock
When calling clk_get_by_index(), fall back to the legacy method of
getting the clock if -ENOENT is returned.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
2016-10-06 10:31:59 -04:00
Stefan Roese
6985d49662 serial: Add serial_mvebu_a3700 for Armada 3700 SoC
The Armada 3700's UART is a simple serial port. It has a 32 bytes
Tx FIFO and a 64 bytes Rx FIFO integrated. This patch adds support
for this UART including the DEBUG UART functions for very early
debug output.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
2016-09-27 17:29:52 +02:00
Masahiro Yamada
1221ce459d treewide: replace #include <asm/errno.h> with <linux/errno.h>
Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have
the same content.  (both just wrap <asm-generic/errno.h>)

Replace all include directives for <asm/errno.h> with <linux/errno.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[trini: Fixup include/clk.]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-23 17:55:42 -04:00
Tom Rini
82f5279b0c ns16650: Make sure we have CONFIG_CLK set before using infrastructure
We cannot call on the CONFIG_CLK based clk_get_rate function unless
CONFIG_CLK is set.

Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-22 15:39:11 -04:00
Paul Burton
50fce1d5d8 serial: ns16550: Support clocks via phandle
Previously ns16550 compatible UARTs probed via device tree have needed
their device tree nodes to contain a clock-frequency property. An
alternative to this commonly used with Linux is to reference a clock via
a phandle. This patch allows U-Boot to support that, retrieving the
clock frequency by probing the appropriate clock device.

For example, a system might choose to provide the UART base clock as a
reference to a clock common to multiple devices:

  sys_clk: clock {
    compatible = "fixed-clock";
    #clock-cells = <0>;
    clock-frequency = <10000000>;
  };

  uart0: uart@10000000 {
    compatible = "ns16550a";
    reg = <0x10000000 0x1000>;
    clocks = <&sys_clk>;
  };

  uart1: uart@10000000 {
    compatible = "ns16550a";
    reg = <0x10001000 0x1000>;
    clocks = <&sys_clk>;
  };

This removes the need for the frequency information to be duplicated in
multiple nodes and allows the device tree to be more descriptive of the
system.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-09-21 15:04:32 +02:00
Alexander Graf
601147b06a serial: bcm283x_mu: Detect disabled serial device
On the raspberry pi, you can disable the serial port to gain dynamic frequency
scaling which can get handy at times.

However, in such a configuration the serial controller gets its rx queue filled
up with zero bytes which then happily get transmitted on to whoever calls
getc() today.

This patch adds detection logic for that case by checking whether the RX pin is
mapped to GPIO15 and disables the mini uart if it is not mapped properly.

That way we can leave the driver enabled in the tree and can determine during
runtime whether serial is usable or not, having a single binary that allows for
uart and non-uart operation.

Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-09-06 13:18:19 -04:00
Masahiro Yamada
85dc2fe119 ARM: uniphier: change UNIPHIER_SERIAL to default y option
This is very likely to be necessary for normal use cases.
Set its default to 'y' for shorter defconfig files.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-08-28 13:11:35 +09:00
Tom Rini
c98b171e10 Merge branch 'rmobile' of git://git.denx.de/u-boot-sh
[trini: Drop CMD_BOOTI as it's now on by default on ARM64]
Signed-off-by: Tom Rini <trini@konsulko.com>
2016-08-20 16:40:34 -04:00
masakazu.mochizuki.wd@hitachi.com
6f107e4cf6 arm: rmobile: Add BLANCHE board support
BLANCHE is development board based on R-Car V2H SoC (R8A7792)

This commit supports the following periherals:
- SCIF, Ethernet, QSPI, MMC

Signed-off-by: Masakazu Mochizuki <masakazu.mochizuki.wd@hitachi.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2016-08-17 10:25:35 +09:00
Hiroyuki Yokoyama
d6ee8ce51d serial: sh: Add support R8A7795
This can be used in the same way as other R-CAR serial setting.

Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2016-08-17 10:25:34 +09:00
Tom Rini
4711e7f7af Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2016-07-28 08:45:00 -04:00
Masahiro Yamada
4e3d84066e ARM: uniphier: use (devm_)ioremap() instead of map_sysmem()
This does not have much impact on behavior, but makes code look more
more like Linux.  The use of devm_ioremap() often helps to delete
.remove callbacks entirely.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-07-24 00:13:10 +09:00
Michal Simek
59da82ef82 serial: zynq: Read information about clock from DT
Read information about clock frequency from DT.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com>
2016-07-22 14:04:40 +02:00
Tom Rini
45031f1a1e Merge branch 'master' of git://git.denx.de/u-boot-sh 2016-07-21 10:40:35 -04:00
Breno Lima
5d219d46aa serial_mxc: Remove unconditional DCE setting
Commit 83fd908f28 ("dm: imx: serial: Support DTE mode when using driver
model") breaks the serial output for the imx boards that do not use
the serial driver model.

The reason for the breakage is that it's setting UFCR_DCEDTE
unconditionally for the non-dm case.

So keep the original behavior by removing UFCR_DCEDTE setting in the
non-dm case.

Tested on mx7sabresd and mx6wandboard.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
2016-07-21 10:43:52 +02:00
Stefan Agner
83fd908f28 dm: imx: serial: Support DTE mode when using driver model
The MXC UART IP can be run in DTE or DCE mode. This depends on the
board wiring and the pinmux used and hence is board specific. This
extends platform data with a new field to choose wheather DTE
mode shall be used.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-07-19 19:52:13 +02:00
Tom Rini
ebe621d5fb Merge git://git.denx.de/u-boot-dm 2016-07-15 08:06:22 -04:00
Simon Glass
2fc24d5335 rockchip: serial: Add an of-platdata driver for rockchip
Add a driver that works with of-platdata. It sets up the platform data and
calls the standard ns16550 driver.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Simon Glass
b2927fbaa8 dm: serial: ns16550: Update to support of-platdata
With of-platdata this driver cannot know the format of the of-platdata
struct, so we cannot use generic code for accessing the of-platdata. Each
SoC that uses this driver will need to set up ns16550's platdata for it.
So don't compile in the generic code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Simon Glass
b484b0daef dm: serial: Add support for of-platdata
When this feature is enabled, we cannot access the device tree to find out
which serial device to use. Just use the first serial driver we find.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Simon Glass
0110f509c8 sandbox: serial: Don't sync video in SPL
SPL does not support an LCD display so there is no need to sync the video
when there is serial output.

Signed-off-by: Simon Glass <sjg@chromium.org>
2016-07-14 20:40:24 -06:00
Toshifumi NISHINAGA
ba0a3c16e0 stm32: clk: Add 200MHz clock configuration for stm32f746 discovery board
This patch adds 200MHz clock configuration for stm32f746 discovery board.
This patch is based on STM32F4 and emcraft's[1].

[1]:  https://github.com/EmcraftSystems/u-boot

Signed-off-by: Toshifumi NISHINAGA <tnishinaga.dev@gmail.com>
2016-07-14 18:22:41 -04:00
Yoshinori Sato
747431b9d5 serial_sh: Add standrad SCI (w/o FIFO) support
Add support for standard type SCI (without FIFO) port.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2016-07-09 05:51:57 +09:00
Yoshinori Sato
359787cfe4 serial_sh: Device Tree support
Add Device Tree bindings.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2016-07-09 05:51:57 +09:00
Stephen Warren
135aa95002 clk: convert API to match reset/mailbox style
The following changes are made to the clock API:
* The concept of "clocks" and "peripheral clocks" are unified; each clock
  provider now implements a single set of clocks. This provides a simpler
  conceptual interface to clients, and better aligns with device tree
  clock bindings.
* Clocks are now identified with a single "struct clk", rather than
  requiring clients to store the clock provider device and clock identity
  values separately. For simple clock consumers, this isolates clients
  from internal details of the clock API.
* clk.h is split so it only contains the client/consumer API, whereas
  clk-uclass.h contains the provider API. This aligns with the recently
  added reset and mailbox APIs.
* clk_ops .of_xlate(), .request(), and .free() are added so providers
  can customize these operations if needed. This also aligns with the
  recently added reset and mailbox APIs.
* clk_disable() is added.
* All users of the current clock APIs are updated.
* Sandbox clock tests are updated to exercise clock lookup via DT, and
  clock enable/disable.
* rkclk_get_clk() is removed and replaced with standard APIs.

Buildman shows no clock-related errors for any board for which buildman
can download a toolchain.

test/py passes for sandbox (which invokes the dm clk test amongst
others).

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-06-19 17:05:55 -06:00
Stoica Cosmin-Stefan
1f68dbc881 serial: Introduce linflex uart support
The Linflex module is integrated on some NXP automotive SoCs part of the former
Freescale portfolio, like S32V234, an SoC for Advanced Driver Assistance
Systems.

Original-signed-off-by: Stoica Cosmin-Stefan <cosminstefan.stoica@freescale.com>
Original-signed-off-by: Chircu Bogdan <Bogdan.Chircu@freescale.com>
Original-signed-off-by: Depons Eric <eric.depons@freescale.com>
Original-signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
2016-06-13 08:56:02 -04:00
Wenyou Yang
c1631c8a04 serial: atmel_usart: Add device tree support
Add device tree support.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas@biessmann.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-06-12 23:49:38 +02:00