Commits
Stefan Wahren committed 039e5970750
clk: mxs: Fix invalid 32-bit access to frac registers According to i.MX23 and i.MX28 reference manual [1],[2] the fractional clock control register is 32-bit wide, but is separated in 4 parts. So write instructions must not apply to more than 1 part at once. The clk init for the i.MX28 violates this restriction and all the other accesses on that register suggest that there isn't such a restriction. This patch restricts the access to this register to byte instructions and extends the comment in the init functions. Btw the imx23 init now uses a R-M-W sequence just like imx28 init to avoid any clock glitches. The changes has been tested with a i.MX23 and a i.MX28 board. [1] - http://cache.freescale.com/files/dsp/doc/ref_manual/IMX23RM.pdf [2] - http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Michael Turquette <mturquette@linaro.org>