• Trent Piepho's avatar
    ARM: imx: Update spi_imx platform data to reflect current state · fe1bd78b
    Trent Piepho authored
    The docs for the spi_imx platform data still refer to a -32 offset used to
    specify a native chip select.  This was removed in commit 602c8f44
    ("spi: imx: fix use of native chip-selects with devicetree") and no
    longer works as documented.  Update documentation.
    
    The macro MXC_SPI_CS() is no longer is needed.
    
    If a board uses all native chip selects, then it's not necessary to
    specify a chip select array at all, as all native is the default (this is
    how device-tree configured SPI masters work too).  Most of the spi-imx
    platform data users have their chip select arrays removed by this patch.
    
    This patch also fixes a bug in mx31moboard introduced in the '602 commit.
    When that board was updated in commit 901f26bc ("ARM: imx: set
    correct chip_select in platform setup") to reflect the SPI change, only
    SPI bus 2 was updated and SPI bus 1 was left with non-sequential chip
    selects.  The mc13783 spi device on bus 1 had its chip select updated as
    if it were on bus 2.
    
    CC: Sascha Hauer <kernel@pengutronix.de>
    CC: Fabio Estevam <fabio.estevam@nxp.com>
    Acked-by: default avatarGreg Ungerer <gerg@linux-m68k.org>
    Reviewed-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
    Signed-off-by: default avatarTrent Piepho <tpiepho@impinj.com>
    Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
    fe1bd78b
mach-mx31moboard.c 15.9 KB