diff options
| author | Laxman Dewangan <ldewangan@nvidia.com> | 2012-02-19 11:28:10 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2012-02-21 10:32:59 -0800 |
| commit | 15e65f291f12c084c18956263ee61f005caf8a9e (patch) | |
| tree | 091fd73ab3c630bb379525c4606757813dfd69a0 /arch/arm/mach-tegra/tegra2_clocks.c | |
| parent | 8c2d09c318f905bd8c1cf451501e20c903fcaaef (diff) | |
ARM: tegra: clock: Support for clock source control without enable bit
Some of controller like i2c requires a different clock source which is
not enabled/disabled by the clock bit in CAR register set.
Handling such cases by looking for PERIPH_NO_ENB flag when calling clock
enable/disable functions.
Change-Id: Id0d1df7946d1c83d769116ae7a91546bd59d4478
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: http://git-master/r/84709
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra2_clocks.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra2_clocks.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra2_clocks.c b/arch/arm/mach-tegra/tegra2_clocks.c index 969a32ba3722..9016dc3e0d77 100644 --- a/arch/arm/mach-tegra/tegra2_clocks.c +++ b/arch/arm/mach-tegra/tegra2_clocks.c @@ -1014,6 +1014,8 @@ static void tegra2_periph_clk_init(struct clk *c) } c->state = ON; + if (c->flags & PERIPH_NO_ENB) + return; if (!c->u.periph.clk_num) return; @@ -1035,6 +1037,9 @@ static int tegra2_periph_clk_enable(struct clk *c) int refcount; pr_debug("%s on clock %s\n", __func__, c->name); + if (c->flags & PERIPH_NO_ENB) + return 0; + if (!c->u.periph.clk_num) return 0; @@ -1071,6 +1076,9 @@ static void tegra2_periph_clk_disable(struct clk *c) pr_debug("%s on clock %s\n", __func__, c->name); + if (c->flags & PERIPH_NO_ENB) + return; + if (!c->u.periph.clk_num) return; @@ -1101,6 +1109,9 @@ static void tegra2_periph_clk_reset(struct clk *c, bool assert) pr_debug("%s %s on clock %s\n", __func__, assert ? "assert" : "deassert", c->name); + if (c->flags & PERIPH_NO_ENB) + return; + BUG_ON(!c->u.periph.clk_num); if (!(c->flags & PERIPH_NO_RESET)) { |