serial: bcm283x_mu: Detect disabled serial device

[u-boot] / configs / rpi_3_32b_defconfig

diff --git a/configs/rpi_3_32b_defconfig b/configs/rpi_3_32b_defconfig
index 922e01bfcbb62a386a80f8b10a40179d7b4d7950..c59474cdf0a8fe0ad2284e6f9102da9921ca8923 100644 (file)
--- a/configs/rpi_3_32b_defconfig
+++ b/configs/rpi_3_32b_defconfig
@@ -20,3 +20,5 @@ CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_PHYS_TO_BUS=y
 CONFIG_OF_LIBFDT=y
+# CONFIG_REQUIRE_SERIAL_CONSOLE is not set
+CONFIG_SYS_MALLOC_F_LEN=0x2000