Commit graph

126 commits

Author SHA1 Message Date
Michal Simek
9c77cb73c7 arm64: zynqmp: Update device tree for pinmux
Added pin control support in device tree for zynqmp.

Signed-off-by: Chirag Parekh <chirag.parekh@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2017-11-28 16:09:10 +01:00
Neil Armstrong
4862215649 ARM: dts: Synchronize Amlogic from Linux Mainline 4.13.5
Synchronize the Amlogic ARM64 dts from mainline Linux 4.13.5

In the preparation of the support of the Amlogic P212 board,
import the corresponding meson-gxl-s905x-p212.dts file.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Beniamino Galvani <b.galvani@gmail.com>
2017-11-17 07:43:32 -05:00
Alexander Graf
409f05f259 fdt: update bcm283x device tree sources to Linux 4.14 state
Upstream Linux has received a few device tree updates to the RPi
which we should propagate into the builtin U-Boot one as well to
gain hardware support.

This patch bumps the dts files to their 4.14 Linux counterparts
with the exception of sdhost on 32bit RPi versions. There we stay
with iproc as the sdhost driver is missing in U-Boot.

Signed-off-by: Alexander Graf <agraf@suse.de>
2017-10-16 09:42:51 -04:00
Maxime Ripard
5ed8239383 sunxi: sina33: Sync the device tree with the kernel
The kernel DT of the SinA33 has evolved quite a bit. Make sure we sync it
and its upstream DTSI to be able to use the OTG. The DTs were taken from
the 4.13 kernel release.

Reviewed-by: Łukasz Majewski <lukma@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-10-03 19:12:05 +02:00
David Wu
2e4ce50d1a rockchip: clk: Add rv1108 SARADC clock support
The clk_saradc is dividing from the 24M, clk_saradc=24MHz/(saradc_div_con+1).
SARADC integer divider control register is 10-bits width.

Signed-off-by: David Wu <david.wu@rock-chips.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-10-01 00:33:29 +02:00
Patrice Chotard
a1e384b4d9 ARM: DTS: stm32: adapt stm32h7 dts files for U-boot
This patch adapts stm32h743 disco and eval dts files to match
with U-boot requirements or add features wich are not yet
upstreamed on kernel side :

_ Add RCC clock driver node and update all clocks phandle
  accordingly.

  By default, on kernel side, all clocks was temporarly
  configured as a phandle to timer_clk waiting for a RCC
  clock driver to be available.
  On U-boot side, we now have a dedicated RCC clock driver, we
  can configured all clocks as phandle to this driver.

  All this binding update will be available soon in a kernel tag,
  as all the bindings have been acked by Rob Herring [1].

  [1] http://lkml.iu.edu/hypermail/linux/kernel/1704.0/00935.html

_ Align STM32H7 serial compatible string with the one which will be
  available in next kernel tag. The bindings has been acked by
  Rob Herring [2].
  This compatible string will be usefull to add stm32h7 specific
  feature for this serial driver.

  [2] https://lkml.org/lkml/2017/7/17/739

_ Add gpio compatible and aliases for stm32h743

_ Add FMC sdram node with associated new bindings value to
  manage second bank (ie bank 1).

_ Add missing HSI and CSI oscillators nodes needed
  by STM32H7 RCC clock driver.

  Clock sources could be:
	_ HSE (High Speed External)
	_ HSI (High Speed Internal)
	_ CSI (Low Power Internal)

  These clocks can be used as clocksource in some configuration.
  By default, HSE is selected as clock source.

_ Set HSE to 25Mhz for stm32h743i-disco and eval board

  By default, the external oscillator frequency is defined at
  25 Mhz in SoC stm32h743.dtsi file.
  It has been set at 125 Mhz in kernel DT temporarly waiting for
  RCC clock driver becomes available.

  As in U-boot we got a RCC clock driver, the real value of HSE
  clock can be used.

_ Add "u-boot,dm-pre-reloc" for rcc, fmc, fixed-clock, pinctrl,
  pwrcfg and gpio nodes.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-22 07:40:03 -04:00
Patrice Chotard
d983a0f008 ARM: DTS: stm32: add stm32h743i-disco files
All these files are imported from linux kernel v4.13

Add device tree support for STM32H743 SoC and discovery
board. This board offers :
  _ STM32H743XIH6 microcontroller with 2 Mbytes of
    Flash memory and 1 Mbyte of RAM in TFBGA240+25 package
  _ 5.7” 640x480 TFT color LCD with touch screen
  _ Ethernet compliant with IEEE-802.3-2002
  _ USB OTG HS
  _ I2 C compatible serial interface
  _ ST-MEMS digital microphones
  _ 8-Gbyte (or more) SDIO3.0 interface microSD™ card
  _ 8Mx32bit SDRAM
  _ 1-Gbit Twin Quad-SPI NOR Flash
  _ Reset, wakeup, or key buttons
  _ Joystick with 4-direction control and selector
  _ Board connectors :
	1 USB with Micro-AB
	Ethernet RJ45
	Stereo headset jack including analog microphone input
	microSD™ card
	RCA connector
	JTAG/SWD and ETM trace
   _ Expansion connectors:
	Arduino Uno compatible Connectors
	2 x PIO connectors (PMOD and PMOD+)
   _ On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration
     capability: mass storage, virtual COM port and debug port

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-22 07:40:02 -04:00
Patrice Chotard
23a0641685 dm: reset: add stm32 reset driver
This driver is adapted from linux drivers/reset/reset-stm32.c
It's compatible with STM32 F4/F7/H7 SoCs.

This driver doesn't implement .of_match as it's binded
by MFD RCC driver.

To add support for each SoC family, a SoC's specific
include/dt-binfings/mfd/stm32xx-rcc.h file must be added.

This patch only includes stm32h7-rcc.h dedicated for STM32H7 SoCs.
Other SoCs support will be added in the future.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-22 07:40:01 -04:00
Patrice Chotard
4c3aebd56a dm: clk: add clk driver support for stm32h7 SoCs
This driver implements basic clock setup, only clock gating
is implemented.

This driver doesn't implement .of_match as it's binded
by MFD RCC driver.

Files include/dt-bindings/clock/stm32h7-clks.h and
doc/device-tree-bindings/clock/st,stm32h7-rcc.txt
will be available soon in a kernel tag, as all the
bindings have been acked by Rob Herring [1].

[1] http://lkml.iu.edu/hypermail/linux/kernel/1704.0/00935.html

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-09-22 07:40:01 -04:00
Lokesh Vutla
4ddaa6ce28 arm: dts: dra7: sync DT with latest Linux
Sync all dra7* specific dts files with the upstream
kernel including changes queued for 4.14

https://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap.git/log/?h=omap-for-v4.14/dt-v3

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2017-09-11 16:19:48 -04:00
Philipp Tomsich
403e9cbcd5 rockchip: rk3368: add DRAM controller driver with DRAM initialisation
This adds a DRAM controller driver for the RK3368 and places it in
drivers/ram/rockchip (where the other DM-enabled DRAM controller
drivers for rockchip devices should also be moved eventually).

At this stage, only the following feature-set is supported:
 - DDR3
 - 32-bit configuration (i.e. fully populated)
 - dual-rank (i.e. no auto-detection of ranks)
 - DDR3-1600K speed-bin

This driver expects to run from a TPL stage that will later return to
the RK3368 BROM.  It communicates with later stages through the
os_reg2 in the pmugrf (i.e. using the same mechanism as Rockchip's DDR
init code).

Unlike other DMC drivers for RK32xx and RK33xx parts, the required
timings are calculated within the driver based on a target frequency
and a DDR3 speed-bin (only the DDR3-1600K speed-bin is support at this
time).

The RK3368 also has the DDRC0_CON0 (DDR ch. 0, control-register 0)
register for controlling the operation of its (single-channel) DRAM
controller in the GRF block.  This provides for selecting DDR3, mobile
DDR modes, and control low-power operation.
As part of this change, DDRC0_CON0 is also added to the GRF structure
definition (at offset 0x600).

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-08-13 17:12:33 +02:00
Marek Vasut
4157c472c3 ARM: dts: rmobile: Import DTS from Linux 4.12
Import the RCar Gen3 DTS and headers from upstream Linux kernel v4.12-rc6,
commit 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c . This includes both M3
and H3 ULCB and Salvator-X boards.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2017-08-03 03:50:03 +09:00
Patrice Chotard
fa87abb6b6 ARM: DTS: stm32: align DT clock declaration with kernel
Use the same clocks macro than the one used by kernel DT.

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
2017-07-26 11:26:52 -04:00
Beniamino Galvani
4a63a75c83 arm: dts: meson: import dts files from Linux 4.12
Import Amlogic Meson DTS files from Linux kernel version 4.12

Signed-off-by: Beniamino Galvani <b.galvani@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-07-26 11:26:48 -04:00
Tom Rini
d43ef73bf2 Merge branch 'master' of git://git.denx.de/u-boot-rockchip 2017-07-11 14:21:50 -04:00
Kever Yang
b647442ce8 rockchip: rk322x: add dts file
The dts files are from kernel and with modify to adapt U-Boot.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
2017-07-11 12:13:46 +02:00
Jorge Ramirez-Ortiz
ccaa83f802 ARM64: dts: hi3798cv200-poplar: add device tree bindings
Pulled from Linux 4.12-rc3

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-07-10 14:26:02 -04:00
Andy Yan
bae2f282a9 rockchip: clk: Add rv1108 clock driver
Add clock driver support for Rockchip rv1108 soc

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-06-07 07:29:25 -06:00
Andreas Färber
37a0c60085 rockchip: rk3368: Add core start-up code for RK3368
The RK3368 is an octa-core Cortex-A53 SoC from Rockchip.
This adds basic support to chain-load U-Boot from Rockchip's
miniloader.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-06-07 07:29:19 -06:00
Tom Rini
b07d044d5b Merge git://git.denx.de/u-boot-sunxi 2017-06-03 18:04:54 -04:00
Andre Przywara
f98852bfa9 sunxi: A64/Pine64: update device tree from Linux
The Linux device tree for the Allwinner A64 SoC has changed a lot since
the U-Boot version was merged.
Let's replace the current DT with a exact copy of the Linux one as of:
commit c6778ff813d2ca3e3c8733c87dc8b6831a64578b
Merge: 0ff4c01 3c0e3abd
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Tue May 9 10:07:33 2017 -0700

This is the DT used in Linux 4.12-rc1.

Since U-Boot has an Ethernet driver (while Linux does not yet), we
provide the required DT nodes for it in an ...-u-boot.dtsi file, to both
mark them as U-Boot specific and to allow easier upgrading once Linux gets
the driver and its own binding later.
Compared to the existing Ethernet DT nodes we just slightly tweak the clock
and reset nodes in there to match the new bindings used by Linux for those.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
2017-06-01 09:25:30 +00:00
Álvaro Fernández Rojas
07661e7f50 MIPS: add support for Broadcom MIPS BCM6338 SoC family
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-31 14:49:55 +02:00
Álvaro Fernández Rojas
23a2168398 MIPS: add support for Broadcom MIPS BCM3380 SoC family
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-31 14:49:55 +02:00
Álvaro Fernández Rojas
bf9012b808 MIPS: add support for Broadcom MIPS BCM6348 SoC family
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-31 14:49:55 +02:00
Tom Rini
a375ff8e14 Merge branch 'master' of git://www.denx.de/git/u-boot-imx 2017-05-18 17:17:45 -04:00
Ley Foon Tan
827e6a7e0d arm: socfpga: Add reset driver support for Arria 10
Add reset driver support for Arria 10.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2017-05-18 11:33:17 +02:00
Peng Fan
993274f485 arm: dts: imx7: sync with Linux
Sync with Linux commit 308ac756("Merge tag 'gpio-v4.11-3'").

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefan Agner <stefan.agner@toradex.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
2017-05-18 11:24:33 +02:00
Tom Rini
1f5541c881 Merge git://git.denx.de/u-boot-rockchip
This adds a new firefly-rk3399 board, MIPI support for rk3399 and
rk3288, rk818 pmic support, mkimage improvements for rockchip and a few
other things.
2017-05-10 17:40:11 -04:00
Tom Rini
102d86552a Merge branch 'master' of git://git.denx.de/u-boot-mips 2017-05-10 15:50:21 -04:00
Kever Yang
dde2223372 rockchip: dts: rk3399: sync with kernel dts
The kernel dts has update a lot since the first time we commit rk3399.dtsi,
sync with kernel for further development.

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
2017-05-10 13:37:21 -06:00
Kever Yang
fd9884e292 rockchip: dts: evb-rk3399: add gmac support
Enable gmac for evb-rk3399.

Change-Id: I85e35667e08e22e38577e63eb0e65731fc9c69b6
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2017-05-10 13:37:21 -06:00
Álvaro Fernández Rojas
a1b5e5e7c1 mips: bmips: add bcm6328-power-domain driver support for BCM63268
This driver can control up to 32 power domains.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
9a5cb22fda mips: bmips: add bcm6328-power-domain driver support for BCM6328
This driver can control up to 32 power domains.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
02bb1fa09e mips: bmips: add bcm6345-rst driver support for BCM63268
This driver can control up to 32 clocks.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
78118211fb mips: bmips: add bcm6345-rst driver support for BCM6328
This driver can control up to 32 clocks.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
efe8b9d012 mips: bmips: add bcm6345-rst driver support for BCM6358
This driver can control up to 32 resets.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
969ebdb930 mips: bmips: add bcm6345-clk driver support for BCM63268
This driver can control up to 32 clocks.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
5b14e13c24 mips: bmips: add bcm6345-clk driver support for BCM6328
This driver can control up to 32 clocks.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Álvaro Fernández Rojas
70789bd2a5 mips: bmips: add bcm6345-clk driver support for BCM6358
This driver can control up to 32 clocks.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-10 16:16:09 +02:00
Adam Ford
cac4d6a680 omap3630: Copy Device tree from Linux 4.9.y stable
Add device tree support to allow for CONFIG_OF_CONTROL in OMAP3630 boards.
DM3730 can use this same device tree.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
2017-05-09 20:35:36 -04:00
Igal Liberman
b617a0d7b8 phy: marvell: cp110: add 5G XFI mode
This patch adds the option to configure a comphy to 5G XFI mode.

In order to configure the comphy to 5G XFI, update
the comphy node in the device-tree:
	phy2 {
		phy-type = <PHY_TYPE_SFI>;
		phy-speed = <PHY_SPEED_5_15625G>;
	};

Signed-off-by: Igal Liberman <igall@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
2017-05-09 13:38:18 +02:00
Stefan Roese
6ecc0b1cdf phy: marvell: add IGNORE COMPHY type
This type tells u-boot to preserve the COMPHY settings as is
it is usefull in situations where the COMPHY was initialized by
earlier firmware.
Note that IGNORE is different from UNCONNECTED since setting
UNCONNECTED type will disconnect the COMPHY in the COMPHY MUX
which is a desired behaviour

Signed-off-by: Yehuda Yitschak <yehuday@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2017-05-09 13:38:18 +02:00
Stefan Roese
e89acc4bf1 phy: marvell: cp110: update utmi phy connection type
UTMI_PHY_TO_USB_HOST was used in USB3 UTMI dts node only, but there will
be USB2 UTMI dts node for some SoCs that have got USB2 controller, so rename
TO_USB_HOST to TO_USB3_HOST to distinguish TO_USB2_HOST in later on patches.

Signed-off-by: zachary <zhangzg@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2017-05-09 13:38:18 +02:00
Stefan Roese
cb686454c7 phy: marvell: Replace PHY_TYPE_KR with PHY_TYPE_SFI
Use correct naming as done in the latest Marvell U-Boot version as well.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2017-05-09 13:38:18 +02:00
maxims@google.com
3b95902d47 aspeed: Add support for Clocks needed by MACs
Add support for clocks needed by MACs to ast2500 clock driver.
The clocks are D2-PLL, which is used by both MACs and PCLK_MAC1 and
PCLK_MAC2 for MAC1 and MAC2 respectively.

The rate of D2-PLL is hardcoded to 250MHz -- the value used in Aspeed
SDK. It is not entirely clear from the datasheet how this clock is used
by MACs, so not clear if the rate would ever need to be different. So,
for now, hardcoding it is probably safer.

The rate of PCLK_MAC{1,2} is chosen based on MAC speed selected through
hardware strapping.

So, the network driver would only need to enable these clocks, no need
to configure the rate.

Signed-off-by: Maxim Sloyko <maxims@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-08 11:57:35 -04:00
maxims@google.com
c93adc08f3 aspeed: Device Tree configuration for Reset Driver
Add Reset Driver configuration to ast2500 SoC Device Tree and bindings
for various reset signals

Signed-off-by: Maxim Sloyko <maxims@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2017-05-08 11:57:32 -04:00
Vikas Manocha
bfea69ad27 stm32f7: sdram: correct sdram configuration as per micron sdram
Actually the sdram memory on stm32f746 discovery board is micron part
MT48LC_4M32_B2B5_6A. This patch does the modification required in the
device tree node & driver for the same.

Also we are passing here all the timing parameters in terms of clock
cycles, so no need to convert time(ns or ms) to cycles.

Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
2017-05-08 11:57:22 -04:00
Vikas Manocha
6c9a10034a stm32f7: sdram: use sdram device tree node to configure sdram controller
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
cc: Christophe KERELLO <christophe.kerello@st.com>
2017-05-08 11:39:05 -04:00
Icenowy Zheng
e267d94011 sunxi: add DTSI file for V3s
As we have now V3s support in board code, the V3s DTSI file should also
be added.

Add also some CCU include headers to satisfy the DTSI file.

Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2017-04-21 09:23:27 +02:00
Tom Rini
af1b7286d8 Merge branch 'master' of git://git.denx.de/u-boot-mmc 2017-04-14 09:05:46 -04:00