clk: tegra: make tegra_clocks_apply_init_table() arch_initcall

tegra_clocks_apply_init_table() needs to be called after the udelay
loop has been calibrated (see commit
441f199a37cfd66c5dd8dd45490bd3ea6971117d ("clk: tegra: defer
application of init table") for why that is).  On existing Tegra SoCs
this was done by calling tegra_clocks_apply_init_table() from
tegra_dt_init(). To make this also work on ARM64, we need to change
this into an initcall. tegra_dt_init() is called from
customize_machine which is an arch_initcall. Therefore this should
also work on existing 32bit Tegra SoCs.

Tested on Tegra20 (ventana), Tegra30 (beaverboard), Tegra124 (jetson TK1) and
Tegra132.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
[paul@pwsan.com: tweaked the commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index 97dc8595c3cd..9ddb7547cb43 100644
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -302,10 +302,13 @@ struct clk ** __init tegra_lookup_dt_id(int clk_id,
 
 tegra_clk_apply_init_table_func tegra_clk_apply_init_table;
 
-void __init tegra_clocks_apply_init_table(void)
+static int __init tegra_clocks_apply_init_table(void)
 {
         if (!tegra_clk_apply_init_table)
-                return;
+                return 0;
 
         tegra_clk_apply_init_table();
+
+        return 0;
 }
+arch_initcall(tegra_clocks_apply_init_table);