Add support for requesting GPIOs with a live device tree.
This involves adjusting the function signature for the legacy function
gpio_request_by_name_nodev(), so fix up all callers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes to stm32f746-disco.c:
Signed-off-by: Tom Rini <trini@konsulko.com>
Adjust this function to us an ofnode instead of an offset, so it can be
used with livetree. This involves updating all callers.
Signed-off-by: Simon Glass <sjg@chromium.org>
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.
In the end we will have:
1. dev_read_addr...() - works on devices, supports flat/live tree
2. devfdt_get_addr...() - current functions, flat tree only
3. of_get_address() etc. - new functions, live tree only
All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.
Note this involves changing some dead code - the imx_lpi2c.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
This header includes things that are needed to make driver build. Adjust
existing users to include that always, even if other dm/ includes are
present
Signed-off-by: Simon Glass <sjg@chromium.org>
We have nothing defining CONFIG_OMAP243X since we dropped the omap243x
platforms, drop these tests.
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Heiko Schocher <hs@denx.de>
New i2c_read, i2c_write and i2c_probe functions, tested on OMAP4
(4430/60/70), OMAP5 (5430) and AM335X (3359) were added in 960187ffa125(
"ARM: OMAP: I2C: New read, write and probe functions") but not tested
on OMAP3. This patch will allow the updated drivers using device tree and
DM_I2C to operate on OMAP3.
Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Convert davinci i2c driver to driver model.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
The i2c driver will be converted to support device model. In preparation
for that change split the various functions into two parts. This will
allow device model specific driver to reuse the majority of the code from
the non device model implementation.
Also rename the probe function to probe_chip to better reflect its
purpose.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Add Device Model based I2C driver for ast2500/ast2400 SoCs.
The driver is very limited, it only supports master mode and
synchronous byte-by-byte reads/writes, no DMA or Pool Buffers.
Signed-off-by: Maxim Sloyko <maxims@google.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
This commit adds support for DM I2C on sunxi platform. It can coexist
with old style sunxi I2C driver, because it is still used in SPL and
by some SoCs.
Because sunxi platform doesn't yet support DM clk, reset and pinctrl
driver, workaround is needed to enable clocks and set resets and
pinctrls. This is done by calling i2c_init_board() in board_init().
This means that CONFIG_I2Cx_ENABLE options needs to be correctly set
in order to use needed I2C controller.
Commit is based on the previous patch made by Philipp Tomsich
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
To enable mipi display, we need to enable pmic
rk808 first for lcd3v3 power,which use i2c0 to
communicate with soc. So enable i2c0.
Signed-off-by: Eric Gao <eric.gao@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
The Cortex-A9 socs rk3066 and rk3188 share the IP but have their own
compatible values, so add them to make the i2c on these platforms accessible.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Simon Glass <sjg@chromium.org>
This patch allows using i2c commands (e.g. "i2c probe", "i2c md", etc)
without the need to first select the bus number with e.g. "i2c dev 0".
This is the "i2c" command behavior similar to the one from pre DM, where
by default bus 0 was immediately accessible.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This patch updates the way in which psc, sscl and ssch I2C parameters are
calculated to be in sync with v4.9 Linux kernel
SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
in the ./drivers/i2c/busses/i2c-omap.c
The previous method was causing several issues:
- The internal I2C frequency (after prescaler) was far above recommended
one (7 - 12 MHz [*]) - the current approach brings better noise suppression
(as stated in Linux commit: SHA1: 84bf2c868f3ca996e5bb)
- The values calculated (psc, sscl and ssch) were far from optimal, which
caused on the test platform (AM57xx) the I2C0 SCL signal low time (Fast
Mode) of ~1.0us (the standard requires > 1.3 us).
[*] for AM57xx TRM SPRUHZ6G, Table 24,7
"HS I2C Register Values for Maximum I2C Bit Rates in I2C F/S, I2C HS Modes"
Signed-off-by: Lukasz Majewski <lukma@denx.de>
v4.9 Linux release:
SHA1: 69973b830859bc6529a7a0468ba0d80ee5117826
in the ./drivers/i2c/busses/i2c-omap.c
recommends to use SCLH=5 and SCLL=7 values.
This patch sets them to default.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Normally, this would probably be done by adding devicetree aliases
to the main dtsi file for the lpc32xx and using bus->req_seq instead.
Since we want to have consistent i2c numbering, we cannot force the
bus->req_seq because. If for instance we have 3 buses numbered
from 0 to 2 with i2c0 enabled, i2c1 disabled and i2c2 enabled;
i2c2 can be selected using 'i2c dev 1' and 'i2c dev 2' commands
because a bus can be probed using req_seq or seq interchangeably.
Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Since the lpc32xx i2c driver does not yet support the devicetree bindings,
this structure is also needed by the board file as the hardware description
is done there.
Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
This is part of the prep work for the migration to the driver model.
It will enable the driver to support DM and non-DM configurations
using the same functions.
Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
This is part of the prep work for the migration to the driver model.
Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
This is part of the prep work for the migration to the driver model.
What used to be the probe function is now called probe_chip.
Signed-off-by: Liam Beguin <lbeguin@tycoint.com>
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Add lpi2c driver for i.MX7ULP.
Need to enable the two options to use this driver:
CONFIG_DM_I2C=y
CONFIG_SYS_I2C_IMX_LPI2C=y
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Heiko Schocher <hs@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
With gcc-6.x we see:
drivers/i2c/fsl_i2c.c:86:3: warning: ‘fsl_i2c_speed_map’ defined but not
used [-Wunused-const-variable=]
The easy way to fix this is that since we only use fsl_i2c_speed_map at
all on __M68K__ move the existing guards around slightly.
Reported-by: Thomas Schaefer <Thomas.Schaefer@kontron.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Acked-by: Heiko Schocher <hs@denx.de>
With the Kconfig re-sync with Linux 4.10, characters such as
'}', ';' in Kconfig help message cause warnings:
$ make defconfig
*** Default configuration is based on 'sandbox_defconfig'
drivers/i2c/Kconfig:132:warning: ignoring unsupported character '}'
drivers/i2c/Kconfig:132:warning: ignoring unsupported character ';'
Drop the Device Tree fragment from the help.
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <sjg@chromium.org>
The readl_poll_timeout() is a useful helper to poll registers
and error out if the condition is not met.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
The generic probe code in dm works, so get rid of the leftover cruft.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Revision 1.0 of this IP has a quirk where if during a long read transfer
the transfer_size register will go to 0, the master will send a NACK to
the slave prematurely.
The way to work around this is to reprogram the transfer_size register
mid-transfer when the only the receive fifo is known full, i.e. the I2C
bus is known non-active.
The workaround is based on the implementation in the linux-kernel.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Reorder the timeout loop such that we first check if the
condition is already true, and then call udelay() so if
the condition is already true, break early.
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
Revision 1.0 of this IP has a couple of issues, such as not supporting
repeated start conditions for read transfers.
So scan through the list of i2c messages for these conditions
and report an error if they are attempted.
This has been fixed for revision 1.4 of the IP, so only report the error
when the IP can really not do it.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
For mux check if the parent is already a device of UCLASS_I2C and if yes
just use that. Otherwise see if someone specified an i2c-parent phandle.
This mimics the behavior found in the Kernel, as it removes the
requirement to explicitly specify a i2c-parent phandle.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Heiko Schocher <hs@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: u-boot@lists.denx.de
If CONFIG_SYS_I2C_S3C24X0_SLAVE isn't defined, then complie error should
be occurred.
This patch is for preventing it.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Adding additional compatible string for version 1.4 of the IP block.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Heiko Schocher <hs@denx.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
0c0f719ad2 accidentally changed the
endianness of the i2c read and write addresses. This was noticable when
accessing EEPROMs that use 2 byte addressing as the LSB was being sent
first.
Signed-off-by: Bradley Bolen <bradleybolen@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Some I2C bus devicetree nodes, doesn't require to have
gpio pinctrl so replace the dev_info to debug so the
print never comes on the console and for bus that uses
gpio pinctrl anyway have dev_err.
Before:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 0x21a4000, no gpio pinctrl state.
After:
------
U-Boot> i2c dev 1
Setting bus to 1
Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Heiko Schocher <hs@denx.de>
Better to print the hex value for bus address instead of
decimal, for more readbility on bus addressing.
Before:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 35274752, no gpio pinctrl state.
After:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 0x21a4000, no gpio pinctrl state.
Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Heiko Schocher <hs@denx.de>
