From 15ac7afe515631ec36966b1cf632a87276536f57 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 11 Dec 2009 16:16:32 -0800 Subject: omap: mux: Add new style pin multiplexing code for omap3 Initially only for 34xx. This code allows us to: - Make the code more generic as the omap internal signal names can stay the same across omap generations for some devices - Map mux registers to GPIO registers that is needed for dynamic muxing of pins during off-idle - Override bootloader mux values via kernel cmdline using omap_mux=some.signa1=0x1234,some.signal2=0x1234 - View and set the mux registers via debugfs if CONFIG_DEBUG_FS is enabled Cc: Mike Rapoport Cc: Benoit Cousson Signed-off-by: Paul Walmsley Signed-off-by: Tony Lindgren --- Documentation/kernel-parameters.txt | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation/kernel-parameters.txt') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 777dc8a32df8..4f62fcbce108 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1787,6 +1787,11 @@ and is between 256 and 4096 characters. It is defined in the file waiting for the ACK, so if this is set too high interrupts *may* be lost! + omap_mux= [OMAP] Override bootloader pin multiplexing. + Format: ... + For example, to override I2C bus2: + omap_mux=i2c2_scl.i2c2_scl=0x100,i2c2_sda.i2c2_sda=0x100 + opl3= [HW,OSS] Format: -- cgit v1.2.3