arm64: dts: renesas: r8a779g0: Add SCIF nodes

Add device nodes for the Serial Communication Interfaces with FIFO
(SCIF) on the Renesas R-Car V4H (R8A779G0) SoC, including DMA support.

Based on patches in the BSP by Takeshi Kihara and Vinh Nguyen.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/3f0ad7ce0fedfca2783001a6eb3eca96aea72115.1666361314.git.geert+renesas@glider.be

diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index 4e43374..8023bad 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -612,6 +612,74 @@
                        status = "disabled";
                };
 
+               scif0: serial@e6e60000 {
+                       compatible = "renesas,scif-r8a779g0",
+                                    "renesas,rcar-gen4-scif", "renesas,scif";
+                       reg = <0 0xe6e60000 0 64>;
+                       interrupts = <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 702>,
+                                <&cpg CPG_CORE R8A779G0_CLK_SASYNCPERD1>,
+                                <&scif_clk>;
+                       clock-names = "fck", "brg_int", "scif_clk";
+                       dmas = <&dmac0 0x51>, <&dmac0 0x50>,
+                              <&dmac1 0x51>, <&dmac1 0x50>;
+                       dma-names = "tx", "rx", "tx", "rx";
+                       power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+                       resets = <&cpg 702>;
+                       status = "disabled";
+               };
+
+               scif1: serial@e6e68000 {
+                       compatible = "renesas,scif-r8a779g0",
+                                    "renesas,rcar-gen4-scif", "renesas,scif";
+                       reg = <0 0xe6e68000 0 64>;
+                       interrupts = <GIC_SPI 252 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 703>,
+                                <&cpg CPG_CORE R8A779G0_CLK_SASYNCPERD1>,
+                                <&scif_clk>;
+                       clock-names = "fck", "brg_int", "scif_clk";
+                       dmas = <&dmac0 0x53>, <&dmac0 0x52>,
+                              <&dmac1 0x53>, <&dmac1 0x52>;
+                       dma-names = "tx", "rx", "tx", "rx";
+                       power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+                       resets = <&cpg 703>;
+                       status = "disabled";
+               };
+
+               scif3: serial@e6c50000 {
+                       compatible = "renesas,scif-r8a779g0",
+                                    "renesas,rcar-gen4-scif", "renesas,scif";
+                       reg = <0 0xe6c50000 0 64>;
+                       interrupts = <GIC_SPI 253 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 704>,
+                                <&cpg CPG_CORE R8A779G0_CLK_SASYNCPERD1>,
+                                <&scif_clk>;
+                       clock-names = "fck", "brg_int", "scif_clk";
+                       dmas = <&dmac0 0x57>, <&dmac0 0x56>,
+                              <&dmac1 0x57>, <&dmac1 0x56>;
+                       dma-names = "tx", "rx", "tx", "rx";
+                       power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+                       resets = <&cpg 704>;
+                       status = "disabled";
+               };
+
+               scif4: serial@e6c40000 {
+                       compatible = "renesas,scif-r8a779g0",
+                                    "renesas,rcar-gen4-scif", "renesas,scif";
+                       reg = <0 0xe6c40000 0 64>;
+                       interrupts = <GIC_SPI 254 IRQ_TYPE_LEVEL_HIGH>;
+                       clocks = <&cpg CPG_MOD 705>,
+                                <&cpg CPG_CORE R8A779G0_CLK_SASYNCPERD1>,
+                                <&scif_clk>;
+                       clock-names = "fck", "brg_int", "scif_clk";
+                       dmas = <&dmac0 0x59>, <&dmac0 0x58>,
+                              <&dmac1 0x59>, <&dmac1 0x58>;
+                       dma-names = "tx", "rx", "tx", "rx";
+                       power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+                       resets = <&cpg 705>;
+                       status = "disabled";
+               };
+
                tpu: pwm@e6e80000 {
                        compatible = "renesas,tpu-r8a779g0", "renesas,tpu";
                        reg = <0 0xe6e80000 0 0x148>;