[U-Boot] [PATCH v2 18/24] spl: Allow mailbox drivers to be used within SPL

[Lokesh Vutla]

Add an option for building mailbox drivers within SPL.

Reviewed-by: Tom Rini <trini at konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla at ti.com>
---
 common/spl/Kconfig       | 8 ++++++++
 drivers/Makefile         | 1 +
 drivers/mailbox/Makefile | 2 +-
 3 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 79bdfe27a0..9e73955d72 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -430,6 +430,14 @@ config SPL_LIBGENERIC_SUPPORT
 	  boards. Enable this option to build the code in lib/ as part of an
 	  SPL build.
 
+config SPL_DM_MAILBOX
+	bool "Support Mailbox"
+	help
+	  Enable support for Mailbox within SPL. This enable the inter
+	  processor communication protocols tobe used within SPL. Enable
+	  this option to build the drivers in drivers/mailbox as part of
+	  SPL build.
+
 config SPL_MMC_SUPPORT
 	bool "Support MMC"
 	depends on MMC
diff --git a/drivers/Makefile b/drivers/Makefile
index d296354b3c..c0124765db 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_$(SPL_TPL_)SERIAL_SUPPORT) += serial/
 obj-$(CONFIG_$(SPL_TPL_)SPI_FLASH_SUPPORT) += mtd/spi/
 obj-$(CONFIG_$(SPL_TPL_)SPI_SUPPORT) += spi/
 obj-$(CONFIG_$(SPL_TPL_)TIMER) += timer/
+obj-$(CONFIG_$(SPL_)DM_MAILBOX) += mailbox/
 
 ifndef CONFIG_TPL_BUILD
 ifdef CONFIG_SPL_BUILD
diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile
index 4ac85d412f..243ff6f3ce 100644
--- a/drivers/mailbox/Makefile
+++ b/drivers/mailbox/Makefile
@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: GPL-2.0
 
-obj-$(CONFIG_DM_MAILBOX) += mailbox-uclass.o
+obj-$(CONFIG_$(SPL_)DM_MAILBOX) += mailbox-uclass.o
 obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox.o
 obj-$(CONFIG_SANDBOX_MBOX) += sandbox-mbox-test.o
 obj-$(CONFIG_TEGRA_HSP) += tegra-hsp.o
-- 
2.18.0