[U-Boot] [PATCH v2] spl: Allow cache drivers to be used in SPL

[Ley Foon Tan]

Add an option for building cache drivers in SPL.

Signed-off-by: Ley Foon Tan <ley.foon.tan at intel.com>

---
v2:
- Added "depends on CACHE" to SPL_CACHE.
- Change to use $(CONFIG_$(SPL_TPL_)CACHE) to enable cache DM build.
---
 common/spl/Kconfig     | 6 ++++++
 drivers/Makefile       | 1 +
 drivers/cache/Makefile | 2 +-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 1f122833a7..ce119d1cc6 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -714,6 +714,12 @@ config SPL_UBI
 	  README.ubispl for more info.
 
 if SPL_DM
+config SPL_CACHE
+	depends on CACHE
+	bool "Support cache drivers in SPL"
+	help
+	  Enable support for cache drivers in SPL.
+
 config SPL_DM_SPI
 	bool "Support SPI DM drivers in SPL"
 	help
diff --git a/drivers/Makefile b/drivers/Makefile
index 0befeddfcb..aed591c614 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0+
 
+obj-$(CONFIG_$(SPL_TPL_)CACHE) += cache/
 obj-$(CONFIG_$(SPL_TPL_)CLK) += clk/
 obj-$(CONFIG_$(SPL_TPL_)DM) += core/
 obj-$(CONFIG_$(SPL_TPL_)DFU) += dfu/
diff --git a/drivers/cache/Makefile b/drivers/cache/Makefile
index 4a6458c602..924217044a 100644
--- a/drivers/cache/Makefile
+++ b/drivers/cache/Makefile
@@ -1,5 +1,5 @@
 
-obj-$(CONFIG_CACHE) += cache-uclass.o
+obj-$(CONFIG_$(SPL_TPL_)CACHE) += cache-uclass.o
 obj-$(CONFIG_SANDBOX) += sandbox_cache.o
 obj-$(CONFIG_L2X0_CACHE) += cache-l2x0.o
 obj-$(CONFIG_V5L2_CACHE) += cache-v5l2.o
-- 
2.19.0