lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ARM: 5678/1: SSP/SPI PL022 polarity terminology fix

Browse Source 
The definition of the SPI clock phase for the Motorola mode of
the PL022 driver was incorrect: the spec had been interpreted as
data being recieved on rising or falling edge of the clocks while
the correct interpretation is that data can be recieved on the
first or second edge transition, falling or rising depending on
the polarity setting.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Linus Walleij
2009-08-15 15:12:05 +01:00
committed by Russell King
parent a2ca00ea93
commit ee2b805c8e
3 changed files with 9 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-u300/spi.c
View File

@@ -48,7 +48,7 @@ struct pl022_config_chip dummy_chip_info = {
.data_size = SSP_DATA_BITS_8, /* used to be 12 in some default */
.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
.clk_phase = SSP_CLK_FALLING_EDGE,
.clk_phase = SSP_CLK_SECOND_EDGE,
.clk_pol = SSP_CLK_POL_IDLE_LOW,
.ctrl_len = SSP_BITS_12,
.wait_state = SSP_MWIRE_WAIT_ZERO,