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Date:   Fri, 15 Jan 2021 19:32:59 -0800
From:   Randy Dunlap <>
Cc:     Randy Dunlap <>,
        kernel test robot <>,
        Atish Patra <>,
        Palmer Dabbelt <>,
        Ard Biesheuvel <>,
        Anson Huang <>,
        Daniel Baluta <>,
        Shawn Guo <>,
        Dong Aisheng <>
Subject: [PATCH] imx: select SOC_BUS to fix firmware build

Fix build error in firmware/imx/ selecting SOC_BUS.

riscv32-linux-ld: drivers/firmware/imx/imx-scu-soc.o: in function `.L9':
imx-scu-soc.c:(.text+0x1b0): undefined reference to `soc_device_register'

Fixes: edbee095fafb ("firmware: imx: add SCU firmware driver support")
Signed-off-by: Randy Dunlap <>
Reported-by: kernel test robot <>
Cc: Atish Patra <>
Cc: Palmer Dabbelt <>
Cc: Ard Biesheuvel <>
Cc: Anson Huang <>
Cc: Daniel Baluta <>
Cc: Shawn Guo <>
Cc: Dong Aisheng <>
 drivers/firmware/imx/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux-next-20210115.orig/drivers/firmware/imx/Kconfig
+++ linux-next-20210115/drivers/firmware/imx/Kconfig
@@ -13,6 +13,7 @@ config IMX_DSP
 config IMX_SCU
 	bool "IMX SCU Protocol driver"
 	depends on IMX_MBOX
+	select SOC_BUS
 	  The System Controller Firmware (SCFW) is a low-level system function
 	  which runs on a dedicated Cortex-M core to provide power, clock, and

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