diff options
| author | Wolfgang Ocker <weo@reccoware.de> | 2010-04-03 14:11:43 (GMT) |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-04-20 04:13:03 (GMT) |
| commit | 1cca2d2b99f3d7eea6aa627b96bffc3b0999eca2 (patch) | |
| tree | 8896708d7926109e2176bcd715b32ff97c6431e7 /arch/powerpc/sysdev/cpm1.c | |
| parent | e8137341b1bb9bbdc29d9fd8980485ec7dcb4109 (diff) | |
| download | linux-1cca2d2b99f3d7eea6aa627b96bffc3b0999eca2.tar.xz | |
powerpc/fsl-cpm: Configure clock correctly for SCC
Some board setup functions call cpm1_clk_setup() or cmp2_clk_setup()
to configure the clock source.
If CPM_CLK_RTX has been used for the parameter mode,
the clock has been configured only for TX but not for RX.
With this patch CPM_CLK_RTX configures the clock for both directions
correctly.
Signed-off-by: Wolfgang Ocker <weo@reccoware.de>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/sysdev/cpm1.c')
| -rw-r--r-- | arch/powerpc/sysdev/cpm1.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c index 4dae369..8d103ca 100644 --- a/arch/powerpc/sysdev/cpm1.c +++ b/arch/powerpc/sysdev/cpm1.c @@ -486,9 +486,6 @@ int cpm1_clk_setup(enum cpm_clk_target target, int clock, int mode) return -EINVAL; } - if (reg == &mpc8xx_immr->im_cpm.cp_sicr && mode == CPM_CLK_RX) - shift += 3; - for (i = 0; i < ARRAY_SIZE(clk_map); i++) { if (clk_map[i][0] == target && clk_map[i][1] == clock) { bits = clk_map[i][2]; @@ -503,6 +500,17 @@ int cpm1_clk_setup(enum cpm_clk_target target, int clock, int mode) bits <<= shift; mask <<= shift; + + if (reg == &mpc8xx_immr->im_cpm.cp_sicr) { + if (mode == CPM_CLK_RTX) { + bits |= bits << 3; + mask |= mask << 3; + } else if (mode == CPM_CLK_RX) { + bits <<= 3; + mask <<= 3; + } + } + out_be32(reg, (in_be32(reg) & ~mask) | bits); return 0; |