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-rw-r--r--src/soc/sifive/fu740/include/soc/gpio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/soc/sifive/fu740/include/soc/gpio.h b/src/soc/sifive/fu740/include/soc/gpio.h
index b0466cc8c2..a4d4ecb911 100644
--- a/src/soc/sifive/fu740/include/soc/gpio.h
+++ b/src/soc/sifive/fu740/include/soc/gpio.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
#ifndef _SOC_SIFIVE_FU740_GPIO_H_
#define _SOC_SIFIVE_FU740_GPIO_H_