Add a driver for the ACT8846 PMIC. This supports several LDOs and BUCKs and
is connected to the I2C bus. This driver supports using a regulator driver
to access the regulators.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Add header files for the peripherals and clocks supported on Rockchip
platforms. The particular implementation (and register set) for each is
SoC-specific, but it seems that the naming can be generic.
Signed-off-by: NSimon Glass <sjg@chromium.org>

This supports RK3288 at present. It does not implement functions or support
for pull up/down.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The Rockchip boot ROM requires a particular file format for booting from SPI.
It consists of a 512-byte header encoded with RC4, some padding and then up
to 32KB of executable code in 2KB blocks, separated by 2KB empty blocks.

Add support to mkimage so that an SPL image (u-boot-spl-dtb.bin) can be
converted to this format. This allows booting from SPI flash on supported
machines.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The Rockchip boot ROM requires a particular file format. It consists of
64KB of zeroes, a 512-byte header encoded with RC4, and then some executable
code.

Add support to mkimage so that an SPL image (u-boot-spl-dtb.bin) can be
converted to this format.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Rockchip SoCs require certain formats for code that they execute, The
simplest format is a 4-byte header at the start of a binary file. Add
support for this so that we can create images that the boot ROM understands.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Allow the image handler to store the original input file size so that it
can reference it later.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NJoe Hershberger <joe.hershberger@ni.com>

At present there is an arbitrary limit of 4KB for padding. Rockchip needs
more than that, so remove this restriction.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NJoe Hershberger <joe.hershberger@ni.com>

In SPL we need access to the CRU and other peripherals so we can set up
SDRAM. Mark these so that they will remain in the device tree.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Bring in required device tree files from Linux. Since mainline Linux is
somewhat behind, use the files from the Chromium tree. We can re-sync once
further code is acccepted upstream.
Signed-off-by: NSimon Glass <sjg@chromium.org>

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: NSimon Glass <sjg@chromium.org>

There can be only one do_reset(). When CONFIG_RESET is enabled this is
provided by the reset uclass, and ARM's version should be disabled.
Signed-off-by: NSimon Glass <sjg@chromium.org>

All devices should bind without error. But when they don't, they can cause
driver model init to fail. A real situation where this can happen is when
there is a missing uclass.

Add a debug() call to dm_scan_fdt_node to make this easier to track.
Signed-off-by: NSimon Glass <sjg@chromium.org>

When a uclass definition is missing, no drivers in that uclass can operate.
This can happen if a board has a strange collection of options (e.g. the
driver is enabled but the uclass is not).

Unfortunately this is very confusing at present. Starting up driver model
results in a -ENOENT error, which is pretty generic. Quite a big of digging
is needed to get to the root cause.

To help with this, change the error to a very strange one with no other
users in U-Boot. Also add a debug message.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Some SoCs want to adjust the input clock to the DWMMC block as a way of
controlling the MMC bus clock. Update the get_mmc_clk() method to support
this.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: NJaehoon Chung <jh80.chung@samsung.com>

At present SPL does not have its own option. But these features can
increase SPL code size. Adjust the Kconfig and Makefile so that
separate a SPL option can be selected.
Signed-off-by: NSimon Glass <sjg@chromium.org>

My original pinctrl patch operating using a peripheral ID enum. This was
shared between pinmux and clock and provides an easy way to specify a device
that needs to be controlled, even it is does not (yet) have a driver within
driver model.

Masahiro's new simple pinctrl gets around this by providing a
set_state_simple() pinctrl method. By passing a device to that call the
peripheral ID becomes unnecessary. If the driver needs it, it can calculate
it itself and use it internally.

However this does not solve the problem for peripheral clocks. The 'pure'
solution would be to pass a driver to the clock uclass also. But this
requires that all devices should have a driver, and a struct udevide. Also
a key optimisation of the clock uclass is allowing a peripheral clock to
be set even when there is no device for that clock.

There may be a better way to achive the same goal, but for now it seems
expedient to add in peripheral ID to the pinctrl uclass. Two methods are
added - one to get the peripheral ID and one to select it. The existing
set_state_simple() is effectively the union of these.
Signed-off-by: NSimon Glass <sjg@chromium.org>

The pinctrl Kconfig options should have help messages. Add this to a few
options.
Signed-off-by: NSimon Glass <sjg@chromium.org>

Signed-off-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

This should depend on SPL_OF_CONTROL (it is not equivalent to
SPL && OF_CONTROL).
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NSimon Glass <sjg@chromium.org>

This driver actually does nothing but test pinctrl uclass, and
demonstrate how things work.

To try this driver, uncomment /* #define DEBUG */ in the
drivers/pinctrl/pinctrl-sandbox.c, and debug messages will be
displayed.

  DRAM:  128 MiB
  sandbox pinmux: group = 1 (serial_a), function = 1 (serial)
  Using default environment

  In:    cros-ec-keyb
  Out:   lcd
  Err:   lcd
  Net:   Net Initialization Skipped
  eth0: eth@10002000, eth1: eth@80000000, eth5: eth@90000000
  => i2c dev 0
  Setting bus to 0
  sandbox pinmux: group = 0 (i2c), function = 0 (i2c)
  sandbox pinconf: group = 0 (i2c), param = 3, arg = 1
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NSimon Glass <sjg@chromium.org>

This creates a new framework for handling of pin control devices,
i.e. devices that control different aspects of package pins.

This uclass handles pinmuxing and pin configuration; pinmuxing
controls switching among silicon blocks that share certain physical
pins, pin configuration handles electronic properties such as pin-
biasing, load capacitance etc.

This framework can support the same device tree bindings, but if you
do not need full interface support, you can disable some features to
reduce memory foot print.  Typically around 1.5KB is necessary to
include full-featured uclass support on ARM board (CONFIG_PINCTRL +
CONFIG_PINCTRL_FULL + CONFIG_PINCTRL_GENERIC + CONFIG_PINCTRL_PINMUX),
for example.

We are often limited on code size for SPL.  Besides, we still have
many boards that do not support device tree configuration.  The full
pinctrl, which requires OF_CONTROL, does not make sense for those
boards.  So, this framework also has a Do-It-Yourself (let's say
simple pinctrl) interface.  With CONFIG_PINCTRL_FULL disabled, the
uclass itself provides no systematic mechanism for identifying the
peripheral device, applying pinctrl settings, etc.  They must be
done in each low-level driver.  In return, you can save much memory
footprint and it might be useful especially for SPL.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NSimon Glass <sjg@chromium.org>

This is useful when we want to bind a device, but do not need the
pointer to the device.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NSimon Glass <sjg@chromium.org>

The TPM is listed in the device tree. Enable the driver and 'tpm' command
so that it can be used.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: NChristophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

This command provides a few useful tests so enable it for common boards.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

These tests come from Chrome OS code. They are not particularly tidy but can
be useful for checking that the TPM is behaving correctly. Some knowledge of
TPM operation is required to use these.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add a few new functions which will be used by the test command in a future
patch.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add a command to display basic information about a TPM such as the model and
open/close state. This can be useful for debugging.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: NChristophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Convert the tpm_tis_lpc driver to use driver model and update boards which
use it.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Convert the tpm_tis_i2c driver to use driver model and update boards which
use it.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add a TPM node to the various Chromebooks so that driver can be converted to
driver model.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Rather then crashing when there is no data, print an error. The error is
printed by the caller to parse_byte_string().
Acked-by: NChristophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Convert the sandbox TPM driver to use driver model. Add it to the device
tree so that it can be found on start-up.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: NChristophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

When a 'tpm' command fails, we set the return code but give no indication
of failure. This can be confusing.

Add an error message when any tpm command fails.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

I2C chips can support a register offset, with registers accessible by
sending this offset as the first part of any read or write transaction.
Most I2C chips have a single byte offset, thus the offset length is 1.
This provides access for up 256 registers.

However other offset lengths are supported, including 0.

Add a command to provide access to the offset length from the command
line. This allows the offset length to be read or written.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add driver model support to the TPM command and the TPM library. Both
support only a single TPM at present.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Add a new uclass for TPMs which uses almost the same TIS (TPM Interface
Specification) as is currently implemented. Since init() is handled by the
normal driver model probe() method, we don't need to implement that. Also
rename the transfer method to xfer() which is a less clumbsy name.

Once all drivers and users are converted to driver model we can remove the
old code.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: Christophe Ricard<christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>

Use a _US suffix for microseconds and a _MS suffic for milliseconds. Move
all timeouts and delays into one place. Use mdelay() instead of udelay()
where appropriate.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Acked-by: NChristophe Ricard <christophe-h.ricard@st.com>
Reviewed-by: NHeiko Schocher <hs@denx.de>