ARM: OMAP2+: omap_device: create clock alias purely from DT data

This avoids the need to add most of the clock aliases under
drivers/clk/ti/clk-xyz.c files.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index a7be05d83ec7..c2626f83e0c2 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -63,7 +63,22 @@ static void _add_clkdev(struct omap_device *od, const char *clk_alias,
                 return;
         }
 
-        rc = clk_add_alias(clk_alias, dev_name(&od->pdev->dev), clk_name, NULL);
+        r = clk_get_sys(NULL, clk_name);
+
+        if (IS_ERR(r) && of_have_populated_dt()) {
+                struct of_phandle_args clkspec;
+
+                clkspec.np = of_find_node_by_name(NULL, clk_name);
+
+                r = of_clk_get_from_provider(&clkspec);
+
+                rc = clk_register_clkdev(r, clk_alias,
+                                         dev_name(&od->pdev->dev));
+        } else {
+                rc = clk_add_alias(clk_alias, dev_name(&od->pdev->dev),
+                                   clk_name, NULL);
+        }
+
         if (rc) {
                 if (rc == -ENODEV || rc == -ENOMEM)
                         dev_err(&od->pdev->dev,