[PATCH v4 25/46] sandbox: Tidy up RTC options

[Simon Glass]

At present we enable the sandbox RTC driver for all builds. Add a separate
Kconfig option to control this, so that it can be disabled in TPL, where
it is not needed.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v3)

Changes in v3:
- Fix a transitory build error with sandbox_spl

 arch/sandbox/dts/sandbox.dts   |  2 +-
 arch/sandbox/dts/sandbox.dtsi  |  6 +++---
 arch/sandbox/include/asm/rtc.h |  2 +-
 drivers/rtc/Kconfig            | 18 ++++++++++++++++++
 drivers/rtc/Makefile           |  4 ++--
 5 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index a4c1b8f6cb7..e9b6745d2db 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -76,7 +76,7 @@
 		clock-frequency = <400000>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_i2c0>;
-		bootph-all;
+		bootph-pre-ram;
 	};
 
 	pcic: pci at 0 {
diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi
index 1f446e62e16..30a305c4d20 100644
--- a/arch/sandbox/dts/sandbox.dtsi
+++ b/arch/sandbox/dts/sandbox.dtsi
@@ -115,7 +115,7 @@
 			reg = <0x43>;
 			compatible = "sandbox-rtc";
 			sandbox,emul = <&emul0>;
-			bootph-all;
+			bootph-pre-ram;
 		};
 		sandbox_pmic: sandbox_pmic {
 			reg = <0x40>;
@@ -126,7 +126,7 @@
 		};
 
 		i2c_emul: emul {
-			bootph-all;
+			bootph-pre-ram;
 			reg = <0xff>;
 			compatible = "sandbox,i2c-emul-parent";
 			emul_eeprom: emul-eeprom {
@@ -136,7 +136,7 @@
 				#emul-cells = <0>;
 			};
 			emul0: emul0 {
-				bootph-all;
+				bootph-pre-ram;
 				compatible = "sandbox,i2c-rtc-emul";
 				#emul-cells = <0>;
 			};
diff --git a/arch/sandbox/include/asm/rtc.h b/arch/sandbox/include/asm/rtc.h
index 025cd6c67cf..bf3ac5ea1ec 100644
--- a/arch/sandbox/include/asm/rtc.h
+++ b/arch/sandbox/include/asm/rtc.h
@@ -40,7 +40,7 @@ enum {
  * @reg:		Register values
  */
 struct sandbox_i2c_rtc_plat_data {
-#if CONFIG_IS_ENABLED(OF_PLATDATA)
+#if CONFIG_IS_ENABLED(OF_PLATDATA) && IS_ENABLED(CONFIG_RTC_SANDBOX)
 	struct dtd_sandbox_i2c_rtc_emul dtplat;
 #endif
 	long base_time;
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 35b6ed4d7c7..fcfda2847c8 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -231,6 +231,24 @@ config RTC_M41T62
 	  Enable driver for ST's M41T62 compatible RTC devices (like RV-4162).
 	  It is a serial (I2C) real-time clock (RTC) with alarm.
 
+config RTC_SANDBOX
+	bool "Enable sandbox RTC driver"
+	depends on SANDBOX && DM_RTC
+	default y
+	help
+	  Enable the sandbox RTC driver. This driver connects to the RTC
+	  emulator and is used to test the RTC uclasses and associated code,
+	  as well as the I2C subsystem.
+
+config SPL_RTC_SANDBOX
+	bool "Enable sandbox RTC driver (SPL)"
+	depends on SANDBOX && SPL_DM_RTC
+	default y
+	help
+	  Enable the sandbox RTC driver. This driver connects to the RTC
+	  emulator and is used to test the RTC uclasses and associated code,
+	  as well as the I2C subsystem.
+
 config RTC_STM32
 	bool "Enable STM32 RTC driver"
 	depends on DM_RTC
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 447551e15aa..b6c9029c8f0 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -16,7 +16,7 @@ obj-$(CONFIG_RTC_DS3231) += ds3231.o
 obj-$(CONFIG_RTC_DS3232) += ds3232.o
 obj-$(CONFIG_RTC_EMULATION) += emul_rtc.o
 obj-$(CONFIG_RTC_HT1380) += ht1380.o
-obj-$(CONFIG_SANDBOX) += i2c_rtc_emul.o
+obj-$(CONFIG_$(SPL_TPL_)RTC_SANDBOX) += i2c_rtc_emul.o
 obj-$(CONFIG_RTC_ISL1208) += isl1208.o
 obj-$(CONFIG_RTC_M41T62) += m41t62.o
 obj-$(CONFIG_RTC_MC13XXX) += mc13xxx-rtc.o
@@ -35,6 +35,6 @@ obj-$(CONFIG_RTC_RX8025) += rx8025.o
 obj-$(CONFIG_RTC_RX8010SJ) += rx8010sj.o
 obj-$(CONFIG_RTC_S35392A) += s35392a.o
 obj-$(CONFIG_RTC_STM32) += stm32_rtc.o
-obj-$(CONFIG_SANDBOX) += sandbox_rtc.o
+obj-$(CONFIG_$(SPL_TPL_)RTC_SANDBOX) += sandbox_rtc.o
 obj-$(CONFIG_RTC_ABX80X) += abx80x.o
 obj-$(CONFIG_RTC_ZYNQMP) += zynqmp_rtc.o
-- 
2.39.2.637.g21b0678d19-goog