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-rw-r--r--arch/arc/boot/dts/angel4.dts2
-rw-r--r--arch/arc/plat-arcfpga/platform.c13
2 files changed, 5 insertions, 10 deletions
diff --git a/arch/arc/boot/dts/angel4.dts b/arch/arc/boot/dts/angel4.dts
index bcf662d21a57..5bb2fdaca02f 100644
--- a/arch/arc/boot/dts/angel4.dts
+++ b/arch/arc/boot/dts/angel4.dts
@@ -17,7 +17,7 @@
interrupt-parent = <&intc>;
chosen {
- bootargs = "console=ttyARC0,115200n8";
+ bootargs = "console=ttyARC0,115200n8 earlyprintk=ttyARC0";
};
aliases {
diff --git a/arch/arc/plat-arcfpga/platform.c b/arch/arc/plat-arcfpga/platform.c
index f09e771b4bbd..61c7e5997387 100644
--- a/arch/arc/plat-arcfpga/platform.c
+++ b/arch/arc/plat-arcfpga/platform.c
@@ -79,16 +79,11 @@ static void arc_fpga_serial_init(void)
ARRAY_SIZE(fpga_early_devs));
/*
- * ARC console driver registers itself as an early platform driver
- * of class "earlyprintk".
- * Install it here, followed by probe of devices.
- * The installation here doesn't require earlyprintk in command line
- * To do so however, replace the lines below with
- * parse_early_param();
- * early_platform_driver_probe("earlyprintk", 1, 1);
- * ^^
+ * ARC console driver registers (build time) as an early platform driver
+ * of class "earlyprintk". However it needs explicit cmdline toggle
+ * "earlyprintk=ttyARC0" to be successfuly runtime registered.
+ * Otherwise the early probe below fails to find the driver
*/
- early_platform_driver_register_all("earlyprintk");
early_platform_driver_probe("earlyprintk", 1, 0);
/*
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