ARM OMAP2+ GPMC: add bus children

This patch adds support for spawning buses as children of the GPMC.

Signed-off-by: Robert ABEL <rabel@cit-ec.uni-bielefeld.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index 624dccb0f002..91b5a1b9b9c2 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -27,6 +27,7 @@
 #include <linux/of_address.h>
 #include <linux/of_mtd.h>
 #include <linux/of_device.h>
+#include <linux/of_platform.h>
 #include <linux/omap-gpmc.h>
 #include <linux/mtd/nand.h>
 #include <linux/pm_runtime.h>
@@ -1812,8 +1813,21 @@ static int gpmc_probe_generic_child(struct platform_device *pdev,
         gpmc_cs_enable_mem(cs);
 
 no_timings:
-        if (of_platform_device_create(child, NULL, &pdev->dev))
-                return 0;
+
+        /* create platform device, NULL on error or when disabled */
+        if (!of_platform_device_create(child, NULL, &pdev->dev))
+                goto err_child_fail;
+
+        /* is child a common bus? */
+        if (of_match_node(of_default_bus_match_table, child))
+                /* create children and other common bus children */
+                if (of_platform_populate(child, of_default_bus_match_table,
+                                         NULL, &pdev->dev))
+                        goto err_child_fail;
+
+        return 0;
+
+err_child_fail:
 
         dev_err(&pdev->dev, "failed to create gpmc child %s\n", child->name);
         ret = -ENODEV;