NAME¶

struct_spi_board_info - board-specific template for a SPI device

SYNOPSIS¶

struct spi_board_info {


  char modalias[SPI_NAME_SIZE];


  const void * platform_data;


  void * controller_data;


  int irq;


  u32 max_speed_hz;


  u16 bus_num;


  u16 chip_select;


  u8 mode;
};  

MEMBERS¶

modalias[SPI_NAME_SIZE]

platform_data

controller_data

irq

max_speed_hz

bus_num

chip_select

mode

DESCRIPTION¶

When adding new SPI devices to the device tree, these structures serve as a partial device template. They hold information which can´t always be determined by drivers. Information that probe can establish (such as the default transfer wordsize) is not included here.

These structures are used in two places. Their primary role is to be stored in tables of board-specific device descriptors, which are declared early in board initialization and then used (much later) to populate a controller´s device tree after the that controller´s driver initializes. A secondary (and atypical) role is as a parameter to spi_new_device call, which happens after those controller drivers are active in some dynamic board configuration models.

COPYRIGHT¶