spl: Allow RTC drivers to be used in SPL

Add a new Kconfig option to allow RTC drivers to be used in SPL.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index b7e316f051044458204c89db008bedc15372f696..bdbab19d2dad952f88ed57765e65ae1362ce6aac 100644 (file)
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -484,6 +484,16 @@ config SPL_RAM_DEVICE
          be already in memory when SPL takes over, e.g. loaded by the boot
          ROM.
 
+config SPL_RTC_SUPPORT
+       bool "Support RTC drivers"
+       depends on SPL
+       help
+         Enable RTC (Real-time Clock) support in SPL. This includes support
+         for reading and setting the time. Some RTC devices also have some
+         non-volatile (battery-backed) memory which is accessible if
+         needed. This enables the drivers in drivers/rtc as part of an SPL
+         build.
+
 config SPL_SATA_SUPPORT
        bool "Support loading from SATA"
        depends on SPL

diff --git a/drivers/Makefile b/drivers/Makefile
index 553577acad5a719cdd4cb5376d636a978098cfbc..f070ea9b2bc2ec27ba8969161c341ce87e055f65 100644 (file)
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_SPL_ETH_SUPPORT) += net/
 obj-$(CONFIG_SPL_ETH_SUPPORT) += net/phy/
 obj-$(CONFIG_SPL_USBETH_SUPPORT) += net/phy/
 obj-$(CONFIG_SPL_PCI_SUPPORT) += pci/
+obj-$(CONFIG_SPL_RTC_SUPPORT) += rtc/
 obj-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += usb/musb-new/
 obj-$(CONFIG_SPL_USB_GADGET_SUPPORT) += usb/gadget/
 obj-$(CONFIG_SPL_USB_GADGET_SUPPORT) += usb/gadget/udc/