ARM: qcom: Add CONFIG_ARCH_MSM8953_BOOT_ORDERING
Populate the devicetree at late init, after all platform device drivers
are registered. Devices are probed in the order they are listed in
devicetree, allowing greater flexibility for optimization.
Change-Id: I2b49bba49d8a36d26a6f53d517125af0cdc5656a
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
diff --git a/arch/arm/mach-qcom/board-msm8953.c b/arch/arm/mach-qcom/board-msm8953.c
index 04b0bcc..de4538f 100644
--- a/arch/arm/mach-qcom/board-msm8953.c
+++ b/arch/arm/mach-qcom/board-msm8953.c
@@ -14,6 +14,7 @@
#include "board-dt.h"
#include <asm/mach/map.h>
#include <asm/mach/arch.h>
+#include <linux/of_platform.h>
static const char *msm8953_dt_match[] __initconst = {
"qcom,msm8953",
@@ -23,9 +24,25 @@
static void __init msm8953_init(void)
{
+ if (IS_ENABLED(CONFIG_ARCH_MSM8953_BOOT_ORDERING))
+ return;
board_dt_populate(NULL);
}
+#ifdef CONFIG_ARCH_MSM8953_BOOT_ORDERING
+static int __init msm8953_dt_populate(void)
+{
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+
+ /* Explicitly parent the /soc devices to the root node to preserve
+ * the kernel ABI (sysfs structure, etc) until userspace is updated
+ */
+ of_platform_populate(of_find_node_by_path("/soc"),
+ of_default_bus_match_table, NULL, NULL);
+}
+late_initcall(msm8953_dt_populate);
+#endif
+
DT_MACHINE_START(MSM8953_DT,
"Qualcomm Technologies, Inc. MSM8953 (Flattened Device Tree)")
.init_machine = msm8953_init,