diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-08-05 10:17:52 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-08-05 11:46:07 +0100 |
| commit | c3ccf357c3d75bd2924e049b6a991f7c0c111068 (patch) | |
| tree | b445074c973c67ba990adb17b0810a3de9d00273 /include | |
| parent | dec34e8b676e14d4df041e3335d6082b247b834e (diff) | |
spi: sh-msiof: Avoid invalid clock generator parameters
The conversion from a look-up table to a calculation for clock generator
parameters forgot to take into account that BRDV x 1/1 is valid only if
BRPS is x 1/1 or x 1/2, leading to undefined behavior (e.g. arbitrary
clock rates).
This limitation is documented for the MSIOF module in all supported
SH/R-Mobile and R-Car Gen2/Gen3 ARM SoCs.
Tested on r8a7791/koelsch and r8a7795/salvator-x.
Fixes: 65d5665bb260b034 ("spi: sh-msiof: Update calculation of frequency dividing")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions