arm64: dts: allwinner: a64: add R_I2C controller

Allwinner A64 has a I2C controller, which is in the R_ MMIO zone and has
two groups of pinmuxes on PL bank, so it's called R_I2C.

Add support for this I2C controller and the pinmux which doesn't conflict
with RSB.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 82516ae..1b31a3a 100644 (file)
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -46,6 +46,7 @@
 #include <dt-bindings/clock/sun8i-r-ccu.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/reset/sun50i-a64-ccu.h>
+#include <dt-bindings/reset/sun8i-r-ccu.h>
 
 / {
        interrupt-parent = <&gic>;
@@ -658,6 +659,18 @@
                        #reset-cells = <1>;
                };
 
+               r_i2c: i2c@1f02400 {
+                       compatible = "allwinner,sun50i-a64-i2c",
+                                    "allwinner,sun6i-a31-i2c";
+                       reg = <0x01f02400 0x400>;
+                       interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&r_ccu CLK_APB0_I2C>;
+                       resets = <&r_ccu RST_APB0_I2C>;
+                       status = "disabled";
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+               };
+
                r_pio: pinctrl@1f02c00 {
                        compatible = "allwinner,sun50i-a64-r-pinctrl";
                        reg = <0x01f02c00 0x400>;
@@ -669,6 +682,11 @@
                        interrupt-controller;
                        #interrupt-cells = <3>;
 
+                       r_i2c_pins_a: i2c-a {
+                               pins = "PL8", "PL9";
+                               function = "s_i2c";
+                       };
+
                        r_rsb_pins: rsb {
                                pins = "PL0", "PL1";
                                function = "s_rsb";