| Kconfig (f0cd91a68acdc9b49d7f6738b514a426da627649) | Kconfig (3cb2fccc5f48a4d6269dfd00b4db570fca2a04d5) |
|---|---|
| 1# 2# SPI driver configuration 3# 4# NOTE: the reason this doesn't show SPI slave support is mostly that 5# nobody's needed a slave side API yet. The master-role API is not 6# fully appropriate there, so it'd need some thought to do well. 7# 8menu "SPI support" 9 10config SPI 11 bool "SPI support" 12 help 13 The "Serial Peripheral Interface" is a low level synchronous 14 protocol. Chips that support SPI can have data transfer rates 15 up to several tens of Mbit/sec. Chips are addressed with a 16 controller and a chipselect. Most SPI slaves don't support 17 dynamic device discovery; some are even write-only or read-only. 18 | 1# 2# SPI driver configuration 3# 4# NOTE: the reason this doesn't show SPI slave support is mostly that 5# nobody's needed a slave side API yet. The master-role API is not 6# fully appropriate there, so it'd need some thought to do well. 7# 8menu "SPI support" 9 10config SPI 11 bool "SPI support" 12 help 13 The "Serial Peripheral Interface" is a low level synchronous 14 protocol. Chips that support SPI can have data transfer rates 15 up to several tens of Mbit/sec. Chips are addressed with a 16 controller and a chipselect. Most SPI slaves don't support 17 dynamic device discovery; some are even write-only or read-only. 18 |
| 19 SPI is widely used by microcontollers to talk with sensors, | 19 SPI is widely used by microcontrollers to talk with sensors, |
| 20 eeprom and flash memory, codecs and various other controller 21 chips, analog to digital (and d-to-a) converters, and more. 22 MMC and SD cards can be accessed using SPI protocol; and for 23 DataFlash cards used in MMC sockets, SPI must always be used. 24 25 SPI is one of a family of similar protocols using a four wire 26 interface (select, clock, data in, data out) including Microwire 27 (half duplex), SSP, SSI, and PSP. This driver framework should --- 106 unchanged lines hidden --- | 20 eeprom and flash memory, codecs and various other controller 21 chips, analog to digital (and d-to-a) converters, and more. 22 MMC and SD cards can be accessed using SPI protocol; and for 23 DataFlash cards used in MMC sockets, SPI must always be used. 24 25 SPI is one of a family of similar protocols using a four wire 26 interface (select, clock, data in, data out) including Microwire 27 (half duplex), SSP, SSI, and PSP. This driver framework should --- 106 unchanged lines hidden --- |