Commit f94a1bed authored by Simon Glass's avatar Simon Glass

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: default avatarSimon Glass <sjg@chromium.org>
Reviewed-by: default avatarMasahiro Yamada <yamada.m@jp.panasonic.com>
parent 2a4eeadd
......@@ -40,8 +40,8 @@ with only minor changes:
Add these to your board config:
#define CONFIG_DM_SPI
#define CONFIG_DM_SPI_FLASH
CONFIG_DM_SPI
CONFIG_DM_SPI_FLASH
2. Add the skeleton
......
......@@ -50,4 +50,6 @@ source "drivers/dma/Kconfig"
source "drivers/crypto/Kconfig"
source "drivers/thermal/Kconfig"
endmenu
......@@ -2,5 +2,7 @@ config DM
bool "Enable Driver Model"
depends on !SPL_BUILD
help
This config option enables Driver Model.
To use legacy drivers, say N.
This config option enables 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.
......@@ -2,5 +2,8 @@ config DM_GPIO
bool "Enable Driver Model for GPIO drivers"
depends on DM
help
If you want to use driver model for GPIO drivers, say Y.
To use legacy GPIO drivers, say N.
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.
......@@ -2,8 +2,16 @@ config DM_I2C
bool "Enable Driver Model for I2C drivers"
depends on DM
help
If you want to use driver model for I2C drivers, say Y.
To use legacy I2C drivers, say N.
Enable driver model for I2C. 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 SYS_I2C_UNIPHIER
bool "UniPhier I2C driver"
......
config DM_CROS_EC
bool "Enable Driver Model for Chrome OS EC"
depends on DM
help
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.
source "drivers/mtd/nand/Kconfig"
source "drivers/mtd/spi/Kconfig"
config DM_SPI_FLASH
bool "Enable Driver Model for SPI flash"
depends on DM && SPI
help
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).
......@@ -2,8 +2,10 @@ config DM_SERIAL
bool "Enable Driver Model for serial drivers"
depends on DM
help
If you want to use driver model for serial drivers, say Y.
To use legacy serial drivers, say N.
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 UNIPHIER_SERIAL
bool "UniPhier on-chip UART support"
......
......@@ -2,5 +2,11 @@ config DM_SPI
bool "Enable Driver Model for SPI drivers"
depends on DM
help
If you want to use driver model for SPI drivers, say Y.
To use legacy SPI drivers, say N.
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_THERMAL
bool "Driver support for thermal devices"
help
Enable support for temporary-sensing devices. Some SoCs have on-chip
temperature sensors to permit warnings, speed throttling or even
automatic power-off when the temperature gets too high or low. Other
devices may be discrete but connected on a suitable bus.
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