3 Commits

Author	SHA1	Message	Date
Luotao Fu	d65aea99bd	mpc52xx_spi: add missing mode_bits definition ... V2 changes: * remove CS_HIGH mode Signed-off-by: Luotao Fu <l.fu@pengutronix.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>	2009-12-08 18:48:13 -07:00
Luotao Fu	4a495b1c43	mpc52xx_spi: fix clearing status register ... Before reading status register to check MODF failure, we have to clear it first since the MODF flag will be set after initializing the spi master, if the hardware comes up with a low SS. The processor datasheet reads: Mode Fault flag -- bit sets if SS input goes low while SPI is configured as a master. Flag is cleared automatically by an SPI status register read (with MODF set) followed by a SPI control register 1 write. Hence simply rereading the register is not sufficient to clear the flag. We redo the write also to make sure to clear the flag. V2 Changes: * change variable type from int to u8 Signed-off-by: Luotao Fu <l.fu@pengutronix.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>	2009-12-08 18:48:13 -07:00
Grant Likely	42bbb70980	powerpc/5200: Add mpc5200-spi (non-PSC) device driver ... Adds support for the dedicated SPI device on the Freescale MPC5200(b) SoC. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>	2009-11-04 15:34:18 -07:00