path: root/arch/arm/mach-omap2/omap_device.c
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authorAaro Koskinen <aaro.koskinen@iki.fi>2013-05-08 16:48:00 -0700
committerTony Lindgren <tony@atomide.com>2013-05-08 16:48:00 -0700
commite65f131a14726e5f1b880a528271a52428e5b3a5 (patch)
tree5243ba8420703e64b55701559f9e7de2ebca8278 /arch/arm/mach-omap2/omap_device.c
parentcf7dd65811401e3d13fe662f2713860bd8cdb499 (diff)
ARM: OMAP: RX-51: change probe order of touchscreen and panel SPI devices
Commit 9fdca9df (spi: omap2-mcspi: convert to module_platform_driver) broke the SPI display/panel driver probe on RX-51/N900. The exact cause is not fully understood, but it seems to be related to the probe order. SPI communication to the panel driver (spi1.2) fails unless the touchscreen (spi1.0) has been probed/initialized before. When the omap2-mcspi driver was converted to a platform driver, it resulted in that the devices are probed immediately after the board registers them in the order they are listed in the board file. Fix the issue by moving the touchscreen before the panel in the SPI device list. The patch fixes the following failure: [ 1.260955] acx565akm spi1.2: invalid display ID [ 1.265899] panel-acx565akm display0: acx_panel_probe panel detect error [ 1.273071] omapdss CORE error: driver probe failed: -19 Tested-by: Sebastian Reichel <sre@debian.org> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Pali Rohár <pali.rohar@gmail.com> Cc: Joni Lapilainen <joni.lapilainen@gmail.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: Felipe Balbi <balbi@ti.com> Cc: stable@vger.kernel.org Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/omap_device.c')
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