[PATCH v3 3/3] arm64: dts: marvell: add RTC description for Armada 7K/8K

[Gregory CLEMENT]

This RTC IP is found in the CP110 master and slave which are part of the
Armada 8K SoCs and of the subset family the Armada 7K.

There is one RTC in each CP but the RTC requires an external
oscillator. However on the Armada 80x0, the RTC clock in CP master is not
connected (by package) to the oscillator. So this one is disabled for the
Armada 8020 and the Armada 8040.

As the RTC clock in CP slave is connected to the oscillator this one is
let enabled. and will be used on these SoCs (80x0).

Signed-off-by: Gregory CLEMENT <gregory.clement at free-electrons.com>
---
 arch/arm64/boot/dts/marvell/armada-8020.dtsi         | 10 ++++++++++
 arch/arm64/boot/dts/marvell/armada-8040.dtsi         |  9 +++++++++
 arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi |  7 +++++++
 arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi  |  7 +++++++
 4 files changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-8020.dtsi b/arch/arm64/boot/dts/marvell/armada-8020.dtsi
index 048e5cf5160e..7c08f1f28d9e 100644
--- a/arch/arm64/boot/dts/marvell/armada-8020.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-8020.dtsi
@@ -54,3 +54,13 @@
 	compatible = "marvell,armada8020", "marvell,armada-ap806-dual",
 		     "marvell,armada-ap806";
 };
+
+/* The RTC requires external oscillator. But on Aramda 80x0, the RTC clock
+ * in CP master is not connected (by package) to the oscillator. So
+ * disable it. However, the RTC clock in CP slave is connected to the
+ * oscillator so this one is let enabled.
+ */
+
+&cpm_rtc {
+	status = "disabled";
+};
diff --git a/arch/arm64/boot/dts/marvell/armada-8040.dtsi b/arch/arm64/boot/dts/marvell/armada-8040.dtsi
index 9c1b28c47683..33813a75bc30 100644
--- a/arch/arm64/boot/dts/marvell/armada-8040.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-8040.dtsi
@@ -54,3 +54,12 @@
 	compatible = "marvell,armada8040", "marvell,armada-ap806-quad",
 		     "marvell,armada-ap806";
 };
+
+/* The RTC requires external oscillator. But on Aramda 80x0, the RTC clock
+ * in CP master is not connected (by package) to the oscillator. So
+ * disable it. However, the RTC clock in CP slave is connected to the
+ * oscillator so this one is let enabled.
+ */
+&cpm_rtc {
+	status = "disabled";
+};
diff --git a/arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi b/arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi
index 3a99c36433d6..d12741414009 100644
--- a/arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110-master.dtsi
@@ -79,6 +79,13 @@
 					"cpm-usb3dev", "cpm-eip150", "cpm-eip197";
 			};
 
+			cpm_rtc: rtc at 284000 {
+				compatible = "marvell,armada-8k-rtc";
+				reg = <0x284000 0x20>, <0x284080 0x24>;
+				reg-names = "rtc", "rtc-soc";
+				interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
 			cpm_sata0: sata at 540000 {
 				compatible = "marvell,armada-8k-ahci",
 					     "generic-ahci";
diff --git a/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi b/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
index 9e09c4d3b6bd..d51eb2db6df7 100644
--- a/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-cp110-slave.dtsi
@@ -59,6 +59,13 @@
 			interrupt-parent = <&gic>;
 			ranges = <0x0 0x0 0xf4000000 0x2000000>;
 
+			cps_rtc: rtc at 284000 {
+				compatible = "marvell,armada-8k-rtc";
+				reg = <0x284000 0x20>, <0x284080 0x24>;
+				reg-names = "rtc", "rtc-soc";
+				interrupts = <GIC_SPI 71 IRQ_TYPE_LEVEL_HIGH>;
+			};
+
 			cps_syscon0: system-controller at 440000 {
 				compatible = "marvell,cp110-system-controller0",
 					     "syscon";
-- 
2.11.0