arm64: dts: bitmain: Add reset controller support for BM1880 SoC

Add reset controller support for Bitmain BM1880 SoC. This commit also
adds reset support to UART peripherals.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/arch/arm64/boot/dts/bitmain/bm1880.dtsi b/arch/arm64/boot/dts/bitmain/bm1880.dtsi
index 7726fd4..cfa59a3 100644 (file)
--- a/arch/arm64/boot/dts/bitmain/bm1880.dtsi
+++ b/arch/arm64/boot/dts/bitmain/bm1880.dtsi
@@ -5,6 +5,7 @@
  */
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/reset/bitmain,bm1880-reset.h>
 
 / {
        compatible = "bitmain,bm1880";
@@ -92,6 +93,12 @@
                                compatible = "bitmain,bm1880-pinctrl";
                                reg = <0x50 0x4B0>;
                        };
+
+                       rst: reset-controller@c00 {
+                               compatible = "bitmain,bm1880-reset";
+                               reg = <0xc00 0x8>;
+                               #reset-cells = <1>;
+                       };
                };
 
                gpio0: gpio@50027000 {
@@ -154,6 +161,7 @@
                        interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
                        reg-shift = <2>;
                        reg-io-width = <4>;
+                       resets = <&rst BM1880_RST_UART0_1_CLK>;
                        status = "disabled";
                };
 
@@ -163,6 +171,7 @@
                        interrupts = <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>;
                        reg-shift = <2>;
                        reg-io-width = <4>;
+                       resets = <&rst BM1880_RST_UART0_1_ACLK>;
                        status = "disabled";
                };
 
@@ -172,6 +181,7 @@
                        interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
                        reg-shift = <2>;
                        reg-io-width = <4>;
+                       resets = <&rst BM1880_RST_UART2_3_CLK>;
                        status = "disabled";
                };
 
@@ -181,6 +191,7 @@
                        interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
                        reg-shift = <2>;
                        reg-io-width = <4>;
+                       resets = <&rst BM1880_RST_UART2_3_ACLK>;
                        status = "disabled";
                };
        };