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| author | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-23 03:29:33 +0200 |
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| committer | Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de> | 2015-10-23 03:29:33 +0200 |
| commit | 15dfd0df63ce6847081d09b2bbd567cc0cc4eae1 (patch) | |
| tree | 3b73f24fcef970bfcace3cbb297cfa57f3994682 /Documentation/blackfin/bfin-spi-notes.txt | |
| parent | 328aa7a45af61bc0060c80847daa67fef7b9c0d0 (diff) | |
| parent | 0149138c4142da287d23f9d5c6038f7fb5e30ac2 (diff) | |
| download | kernel_samsung_smdk4412-15dfd0df63ce6847081d09b2bbd567cc0cc4eae1.zip kernel_samsung_smdk4412-15dfd0df63ce6847081d09b2bbd567cc0cc4eae1.tar.gz kernel_samsung_smdk4412-15dfd0df63ce6847081d09b2bbd567cc0cc4eae1.tar.bz2 | |
initial merge with 3.2.72
Diffstat (limited to 'Documentation/blackfin/bfin-spi-notes.txt')
| -rw-r--r-- | Documentation/blackfin/bfin-spi-notes.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/blackfin/bfin-spi-notes.txt b/Documentation/blackfin/bfin-spi-notes.txt index 556fa87..eae6eaf 100644 --- a/Documentation/blackfin/bfin-spi-notes.txt +++ b/Documentation/blackfin/bfin-spi-notes.txt @@ -9,6 +9,8 @@ the entire SPI transfer. - And not just bits_per_word duration. In most cases you can utilize SPI MODE_3 instead of MODE_0 to work-around this behavior. If your SPI slave device in question requires SPI MODE_0 or MODE_2 timing, you can utilize the GPIO controlled SPI Slave Select option instead. +In this case, you should use GPIO based CS for all of your slaves and not just +the ones using mode 0 or 2 in order to guarantee correct CS toggling behavior. You can even use the same pin whose peripheral role is a SSEL, but use it as a GPIO instead. |