From: Takeshi Kihara <[email protected]>

This patch adds I2C-DVFS device node for the R8A77990 SoC.

v2
* Drop aliases update as in upstream it is not required to configure the
  BD9571 PMIC for DDR backup, nor is the use of i2c are aliases desired.
* Do not describe the device as compatible with "renesas,rcar-gen3-iic" or
  "renesas,rmobile-iic" fallback compat strings. The absence of automatic
  transmission registers leads us to declare the r8a77990 IIC controller as
  incompatible.

Signed-off-by: Takeshi Kihara <[email protected]>
Signed-off-by: Yoshihiro Kaneko <[email protected]>
[simon: drop aliases hunk and fallback compat string usage]
Signed-off-by: Simon Horman <[email protected]>
---
 arch/arm64/boot/dts/renesas/r8a77990.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

 Based on renesas-devel-20181121-v4.20-rc3

diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi 
b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index b0398e05e8ed..4ce07ce791b4 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
@@ -357,6 +357,20 @@
                        reg = <0 0xe6060000 0 0x508>;
                };
 
+               i2c_dvfs: i2c@e60b0000 {
+                       #address-cells = <1>;
+                       #size-cells = <0>;
+                       compatible = "renesas,iic-r8a77990";
+                       reg = <0 0xe60b0000 0 0x34>;
+                       interrupts = <GIC_SPI 173 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 926>;
+                       power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
+                       resets = <&cpg 926>;
+                       dmas = <&dmac0 0x11>, <&dmac0 0x10>;
+                       dma-names = "tx", "rx";
+                       status = "disabled";
+               };
+
                cpg: clock-controller@e6150000 {
                        compatible = "renesas,r8a77990-cpg-mssr";
                        reg = <0 0xe6150000 0 0x1000>;
-- 
2.11.0

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