spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT node

[karo-tx-uboot.git] / include / spi.h

diff --git a/include/spi.h b/include/spi.h
index e2563c99f24f7260f79182ed45dbde4ff7a0f9ed..aba792244a86249e7373932fdd2f233d011eafcf 100644 (file)
--- a/include/spi.h
+++ b/include/spi.h
@@ -259,13 +259,24 @@ static inline int spi_w8r8(struct spi_slave *slave, unsigned char byte)
  * spi_free_slave() to free it later.
  *
  * @param blob:                Device tree blob
- * @param node:                SPI peripheral node to use
- * @param cs:          Chip select to use
- * @param max_hz:      Maximum SCK rate in Hz (0 for default)
- * @param mode:                Clock polarity, clock phase and other parameters
+ * @param slave_node:  Slave node to use
+ * @param spi_node:    SPI peripheral node to use
  * @return pointer to new spi_slave structure
  */
-struct spi_slave *spi_setup_slave_fdt(const void *blob, int node,
-               unsigned int cs, unsigned int max_hz, unsigned int mode);
+struct spi_slave *spi_setup_slave_fdt(const void *blob, int slave_node,
+                                     int spi_node);
+
+/**
+ * spi_base_setup_slave_fdt() - helper function to set up a SPI slace
+ *
+ * This decodes SPI properties from the slave node to determine the
+ * chip select and SPI parameters.
+ *
+ * @blob:      Device tree blob
+ * @busnum:    Bus number to use
+ * @node:      Device tree node for the SPI bus
+ */
+struct spi_slave *spi_base_setup_slave_fdt(const void *blob, int busnum,
+                                          int node);
 
 #endif /* _SPI_H_ */