Commit graph

43 commits

Author SHA1 Message Date
Wills Wang
60b49761e9 drivers: serial: add serial driver for ar933x SOC
This patch add support for ar933x serial.

Signed-off-by: Wills Wang <wills.wang@live.com>
Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-05-21 01:25:50 +02:00
Mateusz Kulikowski
142a20c367 serial: Add support for Qualcomm serial port
This driver works in "new" Data Mover UART mode, so
will be compatible with modern Qualcomm chips only.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:07 -04:00
Masahiro Yamada
d5cf32977f ARM: uniphier: support Debug UART
For ARM32 architecture, CONFIG_DEBUG_LL is available for early
low-level debugging (and actually UniPhier 32bit SoCs use it), but
ARM64 architecture does not support it.  Instead, CONFIG_DEBUG_UART
is available as an architecture-independent debug facility.

This commit supports it on all the UniPhier SoCs (including the new
ARMv8 SoCs), which is very useful for new SoC bringups.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-03-24 01:45:41 +09:00
Michal Simek
966bfa7347 serial: dcc: Move driver to DM
Enabling this driver requires some DT changes.
Adding DCC to root or main bus:
dcc: dcc {
	compatible = "arm,dcc";
	u-boot,dm-pre-reloc;
};

Extend alias list to link DCC:
	serial0 = &uart0;
	serial1 = &uart1;
	serial2 = &dcc;

Change stdout-path to point to dcc port.
	stdout-path = "serial2:115200n8";

Also add support for debug uart to help with early debug.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-02-25 19:06:37 -05:00
Paul Thacker
9e160ee823 drivers: serial: add driver for Microchip PIC32 UART controller.
This adds PIC32 UART controller support based on driver model.

Signed-off-by: Paul Thacker <paul.thacker@microchip.com>
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-02-01 22:14:00 +01:00
Ricardo Ribalda Delgado
80cce2629b ppc: xilinx-ppc4xx: Port to DM serial
xilinx_uartlite has been ported to DM, this patch makes the
xilinx-ppc405-generic and the xilinx-ppc440-generic boards use the new
DM driver.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
2016-01-27 15:57:11 +01:00
Michal Simek
54e24d3332 serial: uartlite: Add uartlite to Kconfig
- Move config option out of board file.
- Remove uartlite address from config file

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
2016-01-27 15:55:49 +01:00
Michal Simek
4166ba3b23 serial: uartlite: Add support for debug console
Add support for debug console.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
2016-01-27 15:55:49 +01:00
Bin Meng
5ed07cf53c serial: lpuart: Move CONFIG_FSL_LPUART to Kconfig
LPUART is seen on Freescale VF610 and QorIQ Layerscape devices.
Create a Kconfig option and move it to defconfig for all boards
that have this serial driver.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-01-20 19:10:14 -07:00
Sergey Temerkhanov
19de81502b arm: serial: Add Kconfig entries to facilitate usage of the pl01x driver for early debug output
This patch adds Kconfig entries to facilitate usage of pl01x as
a debug UART.

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

Acked-by: Simon Glass <sjg@chromium.org>
2016-01-19 22:25:35 +00:00
Simon Glass
92c55b682c dm: serial: Allow the UART driver to be dropped from the image
In very very space-constrained devices even the full UART driver is too
large. In this case the debug UART can still be used in some cases.

Add options to enable the UART driver in SPL and U-Boot proper. Enable both
options by default.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Thomas Chou <thomas@wytron.com.tw>
2016-01-12 10:19:09 -07:00
Michal Simek
6bf87dacd9 serial: zynq: Fix incorrect reference to s5p driver
Remove this c&p error from s5p driver.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-12-07 10:14:29 +01:00
Thomas Chou
9e39003e7f ns16550: move CONFIG_SYS_NS16550 to Kconfig
Move CONFIG_SYS_NS16550 to Kconfig, and run moveconfig.py.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
2015-11-21 21:50:18 -05:00
Thomas Chou
4fb6055211 ns16550: zap CONFIG_NS16550_SERIAL
Zap CONFIG_NS16550_SERIAL, as the unification of ns16550 drivers
is completed.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-21 21:50:17 -05:00
Thomas Chou
98a51fc3d7 ns16550: unify serial_rockchip
Unify serial_rockchip, and use the generic binding.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-21 21:50:15 -05:00
Thomas Chou
f27445cbdc ns16550: unify serial_ppc
Unify serial_ppc, and use the generic binding.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
[trini: Add TODO comment]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-11-21 21:50:04 -05:00
Thomas Chou
81cd63a991 ns16550: unify serial_x86
Unify serial_x86, and use the generic binding.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-20 20:41:30 -05:00
Thomas Chou
8e62d32e5b ns16550: add generic binding to unify the drivers
Add generic binding to unify ns16550 drivers. There are
several drivers using almost the same code, such as serial_dw,
serial_keystone, serial_omap, serial_ppc, serial_rockchip,
serial_tegra.c, and serial_x86. But each is platform specific.

The key difference between these drivers is the way to get
input clock frequency. With this unified approach, fixed clock
frequency should be extracted from "clock-frequency" property of
device tree blob. If this property is not available, the macro
CONFIG_SYS_NS16550_CLK will be used. It can be a constant or a
function to get clock, eg, get_serial_clock().

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-20 20:41:29 -05:00
Thomas Chou
b1e361b605 debug_uart: restore ns16550 as default
Since commit 220e8021af ("nios2: convert altera_jtag_uart to
driver model"), the default debug uart was changed. Most people
use ns16550 UART, so restore it as default.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reported-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Reported-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Acked-by: Simon Glass <sjg@chromium.org>
2015-11-20 20:41:28 -05:00
Francois Retief
e43ce3fca7 sparc: leon3: Add debug_uart support to LEON3 serial driver.
Signed-off-by: Francois Retief <fgretief@spaceteq.co.za>
2015-11-13 10:23:33 +02:00
Simon Glass
c54c0a4c1c arm: zynq: Support the debug UART
Add support for the debug UART to assist with early debugging. Enable it
for Zybo as an example.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-11-04 14:49:52 +01:00
Thomas Chou
da2f838d8a nios2: convert altera_uart to driver model
Convert altera_uart to driver model.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Marek Vasut <marex@denx.de>
2015-10-23 07:36:51 +08:00
Thomas Chou
220e8021af nios2: convert altera_jtag_uart to driver model
Convert altera_jtag_uart to driver model.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2015-10-23 07:36:37 +08:00
Simon Glass
c7fefcb912 debug_uart: Add an option to announce the debug UART
It is useful to see a message from the debug UART early during boot so that
you know things are working. Add an option to enable this. The message will
be displayed as soon as debug_uart_init() is called.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-10-21 07:46:50 -06:00
Simon Glass
0e977bc145 debug_uart: Support board-specific UART initialisation
Some boards need to set things up before the debug UART can be used. On
these boards a call to debug_uart_init() is insufficient. When this option
is enabled, the function board_debug_uart_init() will be called when
debug_uart_init() is called. You can put any code here that is needed to
set up the UART ready for use, such as set pin multiplexing or enable
clocks.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-10-21 07:46:50 -06:00
Masahiro Yamada
d18f37c72b serial: rockchip: make ROCKCHIP_SERIAL depend on ARCH_ROCKCHIP
It looks like this line was copy-pasted, but not modified.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-10-03 10:24:33 -06:00
Tom Rini
c9feb427ab Merge git://git.denx.de/u-boot-rockchip 2015-09-03 14:57:09 -04:00
Simon Glass
765a1b1eb3 rockchip: Add serial support
Add support for the Rockchip serial device using the ns16550 driver.
This uses driver model and device tree for both SPL and U-Boot proper.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-09-02 21:28:23 -06:00
Masahiro Yamada
2ea65f3e22 serial: drop redundant depends on
SANDBOX_SERIAL depends on SANDBOX, and SANDBOX selects DM.
So, "SANDBOX_SERIAL depends on DM" is redundant.

Likewise, UNIPHIER_SERIAL depends on ARCH_UNIPHIER, and
ARCH_UNIPHIER selects DM_SERIAL.
So, "UNIPHIER_SERIAL depends on DM_SERIAL" is redundant.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-09-02 11:33:09 -04:00
Masahiro Yamada
0b11dbf705 drivers: hierarchize drivers Kconfig menu
The menuconfig for drivers are getting more and more cluttered
and unreadable because too many entries are displayed in a single
flat menu.  Use hierarchic menu for each category.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Update to apply again in a few places, drop USB hunk]
Signed-off-by: Tom Rini <trini@konsulko.com>
2015-08-12 20:47:44 -04:00
Hans de Goede
8c4585881d dm: serial: Add a REQUIRE_SERIAL_CONSOLE option for boards with no serial port
Currently the serial code assumes that there is always at least one serial
port (and panics / crashes due to null pointer dereferences when there is
none).

This makes it impossible to use u-boot on boards where there is no (debug)
serial port, because e.g. all uart pins are muxed to another function.

This commit adds a CONFIG_REQUIRE_SERIAL_CONSOLE Kconfig option, which
defaults to y (preserving existing behavior), which can be set to n on
such boards to make them work.

This commit only implements this for CONFIG_DM_SERIAL=y configs, as allowing
running without a serial port for CONFIG_DM_SERIAL=n configs is non trivial,
and is not necessary at this moment.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-08-10 07:01:28 -06:00
Simon Glass
bf6e702232 exynos: Add debug UART support for Samsung S5P serial
Add a debug UART implementation for this serial driver. It does not set up
pinmux automatically - this must be done before calling debug_uart_init().

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-08-05 21:06:11 -06:00
Simon Glass
275854baee efi: Add a serial driver
Add a serial driver which makes use of EFI's console in/out service.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested on Intel Crown Bay and QEMU
Tested-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05 08:44:05 -06:00
Simon Glass
dcfe4a54ed x86: Move CONFIG_X86_SERIAL to Kconfig
Move this config option to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-08-05 08:42:42 -06:00
Simon Glass
af28224546 sandbox: Move CONFIG_SANDBOX_SERIAL to Kconfig
Move this over to Kconfig and tidy up.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-06-10 19:26:55 -06:00
Masahiro Yamada
b6ef3a3f04 ARM: UniPhier: update the vendor name of UniPhier in Kconfig
The business for UniPhier Soc family has been transferred from
Panasonic Corporation to Socionext Inc.

Update the SoC select menu in Kconfig.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2015-05-31 02:55:30 +09:00
Simon Glass
dd0b0122ba serial: ns16550: Add an option to specify the debug UART register shift
This UART permits different register spacing. To support the debug UART on
devices which have a spacing other than 1 byte, allow the shift value to
be specified.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-22 20:03:41 -06:00
Simon Glass
21d004368f serial: ns16550: Support debug UART
Add debug UART functions to permit ns16550 to provide an early debug UART.
Try to avoid using the stack so that this can be called from assembler before
a stack is set up (at least on ARM and PowerPC).

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-19 06:20:28 -07:00
Simon Glass
2f964aa7b1 serial: Support an early UART for debugging
This came up in a discussion on the mailing list here:

https://patchwork.ozlabs.org/patch/384613/

My concerns at the time were:
- it doesn't need to be written in assembler
- it doesn't need to be ARM-specific

This patch provides a possible alternative. It works by allowing any serial
driver to export one init function and provide a putc() function. These
can be used to output debug data before the real serial driver is available.

This implementation does not depend on driver model, and it is possible for
it to operate without a stack on some architectures (e.g. PowerPC, ARM). It
provides the same features as the ARM-specific debug.S but with more UART
and architecture support.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-02-19 06:20:25 -07:00
Simon Glass
f94a1bed07 dm: Expand and complete Kconfig in drivers/
Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
2015-02-12 10:35:33 -07:00
Masahiro Yamada
ff247b7a0d serial: uniphier: move CONFIG_UNIPHIER_SERIAL to Kconfig
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-10-23 21:43:09 -06:00
Masahiro Yamada
da333ae73c dm: add entries to Kconfig
Create entries of CONFIG_DM, CONFIG_DM_SERIAL, CONFIG_DM_GPIO
and CONFIG_DM_SPI.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
2014-10-23 21:43:09 -06:00
Masahiro Yamada
ed36323f6d kconfig: add blank Kconfig files
This would be useful to start moving various config options.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2014-09-24 18:30:28 -04:00