Add support to initialize clock from DT.
Signed-off-by: Prashant Gaikwad <pgaikwad@xxxxxxxxxx>
---
drivers/clk/tegra/clk.c | 23 +++++++++++++++++++++++
drivers/clk/tegra/clk.h | 2 ++
include/linux/clk/tegra.h | 1 +
3 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index cf023a9..314d5bd 100644
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -67,3 +67,26 @@ void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
}
}
}
+
+static const struct of_device_id tegra_dt_clk_match[] = {
+ { .compatible = "nvidia,tegra20-car", .data = tegra20_clock_init },
+ { .compatible = "nvidia,tegra30-car", .data = tegra30_clock_init },
+ { }
+};
+
+void __init tegra_dt_init_clk(void)
+{
+ struct device_node *np;
+ const struct of_device_id *match;
+ of_tegra_clk_init_func_t clk_init_func;
+
+ np = of_find_matching_node(NULL, tegra_dt_clk_match);
+ if (!np)
+ return;
+
+ match = of_match_node(tegra_dt_clk_match, np);
+
+ clk_init_func = match->data;
+
+ clk_init_func(np);
+}
diff --git a/drivers/clk/tegra/clk.h b/drivers/clk/tegra/clk.h
index f1ed1d0..ca1f0e4 100644
--- a/drivers/clk/tegra/clk.h
+++ b/drivers/clk/tegra/clk.h
@@ -20,6 +20,8 @@
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
+typedef void (*of_tegra_clk_init_func_t)(struct device_node *);
+
/**
* struct tegra_clk_sync_source - external clock source from codec
*
diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h
index 0977f2a..a97e241 100644
--- a/include/linux/clk/tegra.h
+++ b/include/linux/clk/tegra.h
@@ -118,6 +118,7 @@ static inline void tegra_cpu_clock_resume(void)
}
#endif
+void tegra_dt_init_clk(void);
void tegra20_cpu_car_ops_init(void);
void tegra30_cpu_car_ops_init(void);
--
1.7.4.1
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