[ARM] omap: create a proper tree of clocks

Traditionally, we've tracked the parent/child relationships between
clk structures by setting the child's parent member to point at the
upstream clock.  As a result, when decending the tree, we have had
to scan all clocks to find the children.

Avoid this wasteful scanning by keeping a list of the clock's children.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 2 insertions, 5 deletions

diff --git a/arch/arm/mach-omap1/clock.h b/arch/arm/mach-omap1/clock.h
index 1b4dd056d9bd..28bc74e93e8d 100644
--- a/arch/arm/mach-omap1/clock.h
+++ b/arch/arm/mach-omap1/clock.h
@@ -155,7 +155,6 @@ static struct clk ck_dpll1 = {
         .name           = "ck_dpll1",
         .ops            = &clkops_null,
         .parent         = &ck_ref,
-        .flags          = RATE_PROPAGATES,
 };
 
 static struct arm_idlect1_clk ck_dpll1out = {
@@ -163,8 +162,7 @@ static struct arm_idlect1_clk ck_dpll1out = {
                 .name           = "ck_dpll1out",
                 .ops            = &clkops_generic,
                 .parent         = &ck_dpll1,
-                .flags          = CLOCK_IDLE_CONTROL |
-                                  ENABLE_REG_32BIT | RATE_PROPAGATES,
+                .flags          = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT,
                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
                 .enable_bit     = EN_CKOUT_ARM,
                 .recalc         = &followparent_recalc,
@@ -187,7 +185,6 @@ static struct clk arm_ck = {
         .name           = "arm_ck",
         .ops            = &clkops_null,
         .parent         = &ck_dpll1,
-        .flags          = RATE_PROPAGATES,
         .rate_offset    = CKCTL_ARMDIV_OFFSET,
         .recalc         = &omap1_ckctl_recalc,
         .round_rate     = omap1_clk_round_rate_ckctl_arm,
@@ -328,7 +325,7 @@ static struct arm_idlect1_clk tc_ck = {
                 .name           = "tc_ck",
                 .ops            = &clkops_null,
                 .parent         = &ck_dpll1,
-                .flags          = RATE_PROPAGATES | CLOCK_IDLE_CONTROL,
+                .flags          = CLOCK_IDLE_CONTROL,
                 .rate_offset    = CKCTL_TCDIV_OFFSET,
                 .recalc         = &omap1_ckctl_recalc,
                 .round_rate     = omap1_clk_round_rate_ckctl_arm,