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authorTony Lindgren <tony@atomide.com>2009-12-11 16:16:32 -0800
committerTony Lindgren <tony@atomide.com>2009-12-11 16:16:32 -0800
commit15ac7afe515631ec36966b1cf632a87276536f57 (patch)
tree68fae5c0154ccf441468569c0d763b32c3b90f21 /Documentation
parent92c9f5018997dbc5f5e91eae2400d78ada2760b0 (diff)
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 <mike@compulab.co.il> Cc: Benoit Cousson <b-cousson@ti.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/kernel-parameters.txt5
1 files changed, 5 insertions, 0 deletions
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: <mux_mode0.mode_name=value>...
+ For example, to override I2C bus2:
+ omap_mux=i2c2_scl.i2c2_scl=0x100,i2c2_sda.i2c2_sda=0x100
+
opl3= [HW,OSS]
Format: <io>