README: remove description about driver model configuration options

All the DM-related configuration options are described in Kconfig
helps.  They should not be duplicated in README.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/README b/README
index bdb2a68b138cfca804b60827d4c91b76c3dd340b..15f1a5d5368e80d3394f6fb398b12967523e1871 100644 (file)
--- a/README
+++ b/README
@@ -697,119 +697,6 @@ The following options need to be configured:
                impossible actions will be skipped if the CPU is in NS mode,
                such as ARM architectural timer initialization.
 
-- Driver Model
-               Driver model is a new framework for devices in U-Boot
-               introduced in early 2014. U-Boot is being progressively
-               moved over to this. It offers a consistent device structure,
-               supports grouping devices into classes and has built-in
-               handling of platform data and device tree.
-
-               To enable transition to driver model in a relatively
-               painful fashion, each subsystem can be independently
-               switched between the legacy/ad-hoc approach and the new
-               driver model using the options below. Also, many uclass
-               interfaces include compatibility features which may be
-               removed once the conversion of that subsystem is complete.
-               As a result, the API provided by the subsystem may in fact
-               not change with driver model.
-
-               See doc/driver-model/README.txt for more information.
-
-               CONFIG_DM
-
-               Enable driver model. This brings in the core support,
-               including scanning of platform data on start-up. If
-               CONFIG_OF_CONTROL is enabled, the device tree will be
-               scanned also when available.
-
-               CONFIG_CMD_DM
-
-               Enable driver model test commands. These allow you to print
-               out the driver model tree and the uclasses.
-
-               CONFIG_DM_DEMO
-
-               Enable some demo devices and the 'demo' command. These are
-               really only useful for playing around while trying to
-               understand driver model in sandbox.
-
-               CONFIG_SPL_DM
-
-               Enable driver model in SPL. You will need to provide a
-               suitable malloc() implementation. If you are not using the
-               full malloc() enabled by CONFIG_SYS_SPL_MALLOC_START,
-               consider using CONFIG_SYS_MALLOC_SIMPLE. In that case you
-               must provide CONFIG_SYS_MALLOC_F_LEN to set the size.
-               In most cases driver model will only allocate a few uclasses
-               and devices in SPL, so 1KB should be enable. See
-               CONFIG_SYS_MALLOC_F_LEN for more details on how to enable
-               it.
-
-               CONFIG_DM_SERIAL
-
-               Enable driver model for serial. This replaces
-               drivers/serial/serial.c with the serial uclass, which
-               implements serial_putc() etc. The uclass interface is
-               defined in include/serial.h.
-
-               CONFIG_DM_GPIO
-
-               Enable driver model for GPIO access. The standard GPIO
-               interface (gpio_get_value(), etc.) is then implemented by
-               the GPIO uclass. Drivers provide methods to query the
-               particular GPIOs that they provide. The uclass interface
-               is defined in include/asm-generic/gpio.h.
-
-               CONFIG_DM_SPI
-
-               Enable driver model for SPI. The SPI slave interface
-               (spi_setup_slave(), spi_xfer(), etc.) is then implemented by
-               the SPI uclass. Drivers provide methods to access the SPI
-               buses that they control. The uclass interface is defined in
-               include/spi.h. The existing spi_slave structure is attached
-               as 'parent data' to every slave on each bus. Slaves
-               typically use driver-private data instead of extending the
-               spi_slave structure.
-
-               CONFIG_DM_SPI_FLASH
-
-               Enable driver model for SPI flash. This SPI flash interface
-               (spi_flash_probe(), spi_flash_write(), etc.) is then
-               implemented by the SPI flash uclass. There is one standard
-               SPI flash driver which knows how to probe most chips
-               supported by U-Boot. The uclass interface is defined in
-               include/spi_flash.h, but is currently fully compatible
-               with the old interface to avoid confusion and duplication
-               during the transition parent. SPI and SPI flash must be
-               enabled together (it is not possible to use driver model
-               for one and not the other).
-
-               CONFIG_DM_CROS_EC
-
-               Enable driver model for the Chrome OS EC interface. This
-               allows the cros_ec SPI driver to operate with CONFIG_DM_SPI
-               but otherwise makes few changes. Since cros_ec also supports
-               I2C and LPC (which don't support driver model yet), a full
-               conversion is not yet possible.
-
-
-               ** Code size options: The following options are enabled by
-               default except in SPL. Enable them explicitly to get these
-               features in SPL.
-
-               CONFIG_DM_WARN
-
-               Enable the dm_warn() function. This can use up quite a bit
-               of space for its strings.
-
-               CONFIG_DM_STDIO
-
-               Enable registering a serial device with the stdio library.
-
-               CONFIG_DM_DEVICE_REMOVE
-
-               Enable removing of devices.
-
 
 - Linux Kernel Interface:
                CONFIG_CLOCKS_IN_MHZ