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| author | Tony Lindgren <tony@atomide.com> | 2009-12-12 01:16:32 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-12-12 01:16:32 +0100 |
| commit | 15ac7afe515631ec36966b1cf632a87276536f57 (patch) | |
| tree | 68fae5c0154ccf441468569c0d763b32c3b90f21 /Documentation | |
| parent | omap2: mux: intoduce omap_mux_{read,write} (diff) | |
| download | linux-15ac7afe515631ec36966b1cf632a87276536f57.tar.xz linux-15ac7afe515631ec36966b1cf632a87276536f57.zip | |
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.txt | 5 |
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> |