| commit | 3beb61dbfcf188399cbc36ce1eeb8b2ba724de38 | [log] [tgz] |
|---|---|---|
| author | Geert Uytterhoeven <geert+renesas@glider.be> | Thu May 22 20:07:35 2014 +0200 |
| committer | Mark Brown <broonie@linaro.org> | Mon May 26 14:30:37 2014 +0100 |
| tree | 03a8a90b71a75dfc60b468fc541d59731b92470a | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 [diff] |
spi: rspi: Round up division to avoid slave overclocking The calculation of the bit rate divider used a standard C division, which rounds down the quotient. This may lead to a higher bitrate than requested. Round up to avoid this. E.g. on Koelsch, the SPI flash (configured for 30 MHz) was driven at 48.75 MHz. After this patch it's driven at a safe 24.375 MHz. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Mark Brown <broonie@linaro.org>