Geert Uytterhoeven 3beb61dbfc 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>
2014-05-26 14:30:37 +01:00
..
2014-04-08 12:09:37 +01:00
2013-11-14 11:04:38 -08:00
2013-12-31 12:30:18 +00:00