mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-26 22:52:18 +00:00
37 lines
1.3 KiB
Text
37 lines
1.3 KiB
Text
config DM_SPI
|
|
bool "Enable Driver Model for SPI drivers"
|
|
depends on DM
|
|
help
|
|
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 SANDBOX_SPI
|
|
bool "Sandbox SPI driver"
|
|
depends on SANDBOX && DM
|
|
help
|
|
Enable SPI support for sandbox. This is an emulation of a real SPI
|
|
bus. Devices can be attached to the bus using the device tree
|
|
which specifies the driver to use. As an example, see this device
|
|
tree fragment from sandbox.dts. It shows that the SPI bus has a
|
|
single flash device on chip select 0 which is emulated by the driver
|
|
for "sandbox,spi-flash", which is in drivers/mtd/spi/sandbox.c.
|
|
|
|
spi@0 {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
reg = <0>;
|
|
compatible = "sandbox,spi";
|
|
cs-gpios = <0>, <&gpio_a 0>;
|
|
flash@0 {
|
|
reg = <0>;
|
|
compatible = "spansion,m25p16", "sandbox,spi-flash";
|
|
spi-max-frequency = <40000000>;
|
|
sandbox,filename = "spi.bin";
|
|
};
|
|
};
|