riscv: dts: spacemit: define all missing I2C controller nodes

SpacemiT K1 SoC is equipped with a total of nine I2C controllers,
ranging from I2C0 to I2C8.

Prior to this change, only I2C2 and I2C8 were explicitly defined
within the device tree. This patch comprehensively adds the
device tree node definitions for I2C controller 0, 1, 4 to 7.

The I2C3 node is not added because it belongs exclusively to the
secure domain which not used in the linux realm.

All newly added I2C nodes are set to "disabled" status by default,
allowing future board-specific device tree to enable and configure.

Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://lore.kernel.org/r/20251105-k1-add-i2c-node-v1-2-d18dae246137@linux.spacemit.com
Signed-off-by: Yixun Lan <dlan@gentoo.org>

diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spacemit/k1.dtsi
index e3de4815e811cd22e7199159a1f248df493e1e83..7818ca4979b6a7755722919a5958512aa11950ab 100644 (file)
--- a/arch/riscv/boot/dts/spacemit/k1.dtsi
+++ b/arch/riscv/boot/dts/spacemit/k1.dtsi
@@ -358,6 +358,32 @@
                        #reset-cells = <1>;
                };
 
+               i2c0: i2c@d4010800 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd4010800 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI0>,
+                                <&syscon_apbc CLK_TWSI0_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <36>;
+                       status = "disabled";
+               };
+
+               i2c1: i2c@d4011000 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd4011000 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI1>,
+                                <&syscon_apbc CLK_TWSI1_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <37>;
+                       status = "disabled";
+               };
+
                i2c2: i2c@d4012000 {
                        compatible = "spacemit,k1-i2c";
                        reg = <0x0 0xd4012000 0x0 0x38>;
@@ -371,6 +397,32 @@
                        status = "disabled";
                };
 
+               i2c4: i2c@d4012800 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd4012800 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI4>,
+                                <&syscon_apbc CLK_TWSI4_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <40>;
+                       status = "disabled";
+               };
+
+               i2c5: i2c@d4013800 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd4013800 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI5>,
+                                <&syscon_apbc CLK_TWSI5_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <41>;
+                       status = "disabled";
+               };
+
                syscon_apbc: system-controller@d4015000 {
                        compatible = "spacemit,k1-syscon-apbc";
                        reg = <0x0 0xd4015000 0x0 0x1000>;
@@ -382,6 +434,19 @@
                        #reset-cells = <1>;
                };
 
+               i2c6: i2c@d4018800 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd4018800 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI6>,
+                                <&syscon_apbc CLK_TWSI6_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <70>;
+                       status = "disabled";
+               };
+
                gpio: gpio@d4019000 {
                        compatible = "spacemit,k1-gpio";
                        reg = <0x0 0xd4019000 0x0 0x100>;
@@ -472,6 +537,19 @@
                        status = "disabled";
                };
 
+               i2c7: i2c@d401d000 {
+                       compatible = "spacemit,k1-i2c";
+                       reg = <0x0 0xd401d000 0x0 0x38>;
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       clocks = <&syscon_apbc CLK_TWSI7>,
+                                <&syscon_apbc CLK_TWSI7_BUS>;
+                       clock-names = "func", "bus";
+                       clock-frequency = <400000>;
+                       interrupts = <18>;
+                       status = "disabled";
+               };
+
                i2c8: i2c@d401d800 {
                        compatible = "spacemit,k1-i2c";
                        reg = <0x0 0xd401d800 0x0 0x38>;
@@ -669,6 +747,8 @@
                        #reset-cells = <1>;
                };
 
+               /* sec_i2c3: 0xf0614000, not available from Linux */
+
                camera-bus {
                        compatible = "simple-bus";
                        ranges;