On 12/04/2013 02:46 AM, Huang Shijie wrote: > 于 2013年11月29日 22:52, Angus Clark 写道: >> int (*write_reg)(struct spi_nor_info *info, >> uint8_t cmd, uint8_t *reg, int len, >> int wren, int wtr); > I guess you add the 'wren' for the issuing write-enable before issuing > the 'cmd'. > > but what's 'wtr' for? i do not know what's the meaning of the 'wtr'. >
'wtr' is for "Wait 'til Ready". Some register writes are instant, while others require polling of the "Write In Progress" bit. Cheers, Angus -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
