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| author | Alexandre Courbot <acourbot@nvidia.com> | 2013-05-26 11:56:31 +0900 |
|---|---|---|
| committer | Mike Turquette <mturquette@linaro.org> | 2013-05-31 12:24:36 -0700 |
| commit | 9139227d4caef6a8daae8a428f9a4bbb7394ea8b (patch) | |
| tree | 95ef761c681574c4a6e59cc352bf9d85cbaa6498 /drivers | |
| parent | 995968e40e74ddf678e8b8312865d7400708d893 (diff) | |
| download | linux-9139227d4caef6a8daae8a428f9a4bbb7394ea8b.tar.gz linux-9139227d4caef6a8daae8a428f9a4bbb7394ea8b.tar.bz2 linux-9139227d4caef6a8daae8a428f9a4bbb7394ea8b.zip | |
clk: tegra114: correctly output clk_32k
Tegra has a blink timer register that allows to modulate the
clk_32k clock before outputting it. Since clk_32k is presented to the
kernel as a fixed clock, make sure this register does not tamper with
the clock frequency and that clk_32k is outputted as-is, similarly to
what is done on t20 and t30.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/tegra/clk-tegra114.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/clk/tegra/clk-tegra114.c b/drivers/clk/tegra/clk-tegra114.c index 6574f36c236b..772fc2e53371 100644 --- a/drivers/clk/tegra/clk-tegra114.c +++ b/drivers/clk/tegra/clk-tegra114.c @@ -127,6 +127,7 @@ #define PMC_DPD_PADS_ORIDE_BLINK_ENB 20 #define PMC_CTRL 0 #define PMC_CTRL_BLINK_ENB 7 +#define PMC_BLINK_TIMER 0x40 #define OSC_CTRL 0x50 #define OSC_CTRL_OSC_FREQ_SHIFT 28 @@ -1625,6 +1626,8 @@ static void __init tegra114_pmc_clk_init(void __iomem *pmc_base) clks[clk_out_3] = clk; /* blink */ + /* clear the blink timer register to directly output clk_32k */ + writel_relaxed(0, pmc_base + PMC_BLINK_TIMER); clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0, pmc_base + PMC_DPD_PADS_ORIDE, PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL); |