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>
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 @@
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 @@
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;