ARM: dts: rockchip: add hym8563 rtc to Radxa Rock board

The Radxa Rock uses a hym8563 as rtc. Add the i2c device and necessary
pinconfig for the interrupt pin - labeled rtc_int in the schematics.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/rk3188-radxarock.dts b/arch/arm/boot/dts/rk3188-radxarock.dts
index ef72faf9059a..ff35acfa8ae7 100644
--- a/arch/arm/boot/dts/rk3188-radxarock.dts
+++ b/arch/arm/boot/dts/rk3188-radxarock.dts
@@ -80,6 +80,17 @@
         status = "okay";
         clock-frequency = <400000>;
 
+        rtc@51 {
+                compatible = "haoyu,hym8563";
+                reg = <0x51>;
+                interrupt-parent = <&gpio0>;
+                interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+                pinctrl-names = "default";
+                pinctrl-0 = <&rtc_int>;
+                #clock-cells = <0>;
+                clock-output-names = "xin32k";
+        };
+
         act8846: act8846@5a {
                 compatible = "active-semi,act8846";
                 reg = <0x5a>;
@@ -196,6 +207,12 @@
                 };
         };
 
+        hym8563 {
+                rtc_int: rtc-int {
+                        rockchip,pins = <RK_GPIO0 0 RK_FUNC_GPIO &pcfg_pull_up>;
+                };
+        };
+
         ir-receiver {
                 ir_recv_pin: ir-recv-pin {
                         rockchip,pins = <RK_GPIO0 10 RK_FUNC_GPIO &pcfg_pull_none>;