Convert the Renesas Serial Communication Interface ((H)SCI(F)(A|B))
Device Tree binding documentation to json-schema.
Split the bindings in 5 files, one per major type, to ease expressing
constraints.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
v2:
- Drop paragraph about aliases,
- Fix power-domains and resets to maxItems 1,
- Use a single const compatible value for SCI,
- Use lists of descriptions and const values for interrupts resp.
interrupt-names for SCI and SCIF,
- Use multiple possible lists of descriptions and const values for
interrupts resp. interrupt-names for SCIF.
---
.../bindings/serial/renesas,hscif.yaml | 135 ++++++++++++++
.../bindings/serial/renesas,sci-serial.txt | 150 ---------------
.../bindings/serial/renesas,sci.yaml | 69 +++++++
.../bindings/serial/renesas,scif.yaml | 172 ++++++++++++++++++
.../bindings/serial/renesas,scifa.yaml | 107 +++++++++++
.../bindings/serial/renesas,scifb.yaml | 98 ++++++++++
6 files changed, 581 insertions(+), 150 deletions(-)
create mode 100644 Documentation/devicetree/bindings/serial/renesas,hscif.yaml
delete mode 100644 Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
create mode 100644 Documentation/devicetree/bindings/serial/renesas,sci.yaml
create mode 100644 Documentation/devicetree/bindings/serial/renesas,scif.yaml
create mode 100644 Documentation/devicetree/bindings/serial/renesas,scifa.yaml
create mode 100644 Documentation/devicetree/bindings/serial/renesas,scifb.yaml
diff --git a/Documentation/devicetree/bindings/serial/renesas,hscif.yaml b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
new file mode 100644
index 0000000000000000..91101521ef078c19
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/renesas,hscif.yaml
@@ -0,0 +1,135 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/renesas,hscif.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Renesas High Speed Serial Communication Interface with FIFO (HSCIF)
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: serial.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,hscif-r8a7778 # R-Car M1
+ - renesas,hscif-r8a7779 # R-Car H1
+ - const: renesas,rcar-gen1-hscif # R-Car Gen1
+ - const: renesas,hscif # generic HSCIF compatible UART
+
+ - items:
+ - enum:
+ - renesas,hscif-r8a7743 # RZ/G1M
+ - renesas,hscif-r8a7744 # RZ/G1N
+ - renesas,hscif-r8a7745 # RZ/G1E
+ - renesas,hscif-r8a77470 # RZ/G1C
+ - renesas,hscif-r8a7790 # R-Car H2
+ - renesas,hscif-r8a7791 # R-Car M2-W
+ - renesas,hscif-r8a7792 # R-Car V2H
+ - renesas,hscif-r8a7793 # R-Car M2-N
+ - renesas,hscif-r8a7794 # R-Car E2
+ - const: renesas,rcar-gen2-hscif # R-Car Gen2 and RZ/G1
+ - const: renesas,hscif # generic HSCIF compatible UART
+
+ - items:
+ - enum:
+ - renesas,hscif-r8a774a1 # RZ/G2M
+ - renesas,hscif-r8a774b1 # RZ/G2N
+ - renesas,hscif-r8a774c0 # RZ/G2E
+ - renesas,hscif-r8a7795 # R-Car H3
+ - renesas,hscif-r8a7796 # R-Car M3-W
+ - renesas,hscif-r8a77961 # R-Car M3-W+
+ - renesas,hscif-r8a77965 # R-Car M3-N
+ - renesas,hscif-r8a77970 # R-Car V3M
+ - renesas,hscif-r8a77980 # R-Car V3H
+ - renesas,hscif-r8a77990 # R-Car E3
+ - renesas,hscif-r8a77995 # R-Car D3
+ - const: renesas,rcar-gen3-hscif # R-Car Gen3 and RZ/G2
+ - const: renesas,hscif # generic HSCIF compatible UART
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 4
+
+ clock-names:
+ minItems: 1
+ maxItems: 4
+ items:
+ enum:
+ - fck # UART functional clock
+ - hsck # optional external clock input
+ - brg_int # optional internal clock source for BRG frequency divider
+ - scif_clk # optional external clock source for BRG frequency divider
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ dmas:
+ description:
+ Must contain a list of pairs of references to DMA specifiers, one for
+ transmission, and one for reception.
+
+ dma-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ enum:
+ - tx
+ - rx
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-hscif
+ - renesas,rcar-gen3-hscif
+then:
+ required:
+ - resets
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7795-cpg-mssr.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/r8a7795-sysc.h>
+ aliases {
+ serial1 = &hscif1;
+ };
+
+ hscif1: serial@e6550000 {
+ compatible = "renesas,hscif-r8a7795", "renesas,rcar-gen3-hscif",
+ "renesas,hscif";
+ reg = <0xe6550000 96>;
+ interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 519>, <&cpg CPG_CORE R8A7795_CLK_S3D1>,
+ <&scif_clk>;
+ clock-names = "fck", "brg_int", "scif_clk";
+ dmas = <&dmac1 0x33>, <&dmac1 0x32>, <&dmac2 0x33>, <&dmac2 0x32>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
+ resets = <&cpg 519>;
+ uart-has-rtscts;
+ };
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt b/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
deleted file mode 100644
index 5816e7d739f618e4..0000000000000000
--- a/Documentation/devicetree/bindings/serial/renesas,sci-serial.txt
+++ /dev/null
@@ -1,150 +0,0 @@
-* Renesas SH-Mobile Serial Communication Interface
-
-Required properties:
-
- - compatible: Must contain one or more of the following:
-
- - "renesas,scif-r7s72100" for R7S72100 (RZ/A1H) SCIF compatible UART.
- - "renesas,scif-r7s9210" for R7S9210 (RZ/A2) SCIF compatible UART.
- - "renesas,scifa-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFA compatible UART.
- - "renesas,scifb-r8a73a4" for R8A73A4 (R-Mobile APE6) SCIFB compatible UART.
- - "renesas,scifa-r8a7740" for R8A7740 (R-Mobile A1) SCIFA compatible UART.
- - "renesas,scifb-r8a7740" for R8A7740 (R-Mobile A1) SCIFB compatible UART.
- - "renesas,scif-r8a7743" for R8A7743 (RZ/G1M) SCIF compatible UART.
- - "renesas,scifa-r8a7743" for R8A7743 (RZ/G1M) SCIFA compatible UART.
- - "renesas,scifb-r8a7743" for R8A7743 (RZ/G1M) SCIFB compatible UART.
- - "renesas,hscif-r8a7743" for R8A7743 (RZ/G1M) HSCIF compatible UART.
- - "renesas,scif-r8a7744" for R8A7744 (RZ/G1N) SCIF compatible UART.
- - "renesas,scifa-r8a7744" for R8A7744 (RZ/G1N) SCIFA compatible UART.
- - "renesas,scifb-r8a7744" for R8A7744 (RZ/G1N) SCIFB compatible UART.
- - "renesas,hscif-r8a7744" for R8A7744 (RZ/G1N) HSCIF compatible UART.
- - "renesas,scif-r8a7745" for R8A7745 (RZ/G1E) SCIF compatible UART.
- - "renesas,scifa-r8a7745" for R8A7745 (RZ/G1E) SCIFA compatible UART.
- - "renesas,scifb-r8a7745" for R8A7745 (RZ/G1E) SCIFB compatible UART.
- - "renesas,hscif-r8a7745" for R8A7745 (RZ/G1E) HSCIF compatible UART.
- - "renesas,scif-r8a77470" for R8A77470 (RZ/G1C) SCIF compatible UART.
- - "renesas,hscif-r8a77470" for R8A77470 (RZ/G1C) HSCIF compatible UART.
- - "renesas,scif-r8a774a1" for R8A774A1 (RZ/G2M) SCIF compatible UART.
- - "renesas,hscif-r8a774a1" for R8A774A1 (RZ/G2M) HSCIF compatible UART.
- - "renesas,scif-r8a774b1" for R8A774B1 (RZ/G2N) SCIF compatible UART.
- - "renesas,hscif-r8a774b1" for R8A774B1 (RZ/G2N) HSCIF compatible UART.
- - "renesas,scif-r8a774c0" for R8A774C0 (RZ/G2E) SCIF compatible UART.
- - "renesas,hscif-r8a774c0" for R8A774C0 (RZ/G2E) HSCIF compatible UART.
- - "renesas,scif-r8a7778" for R8A7778 (R-Car M1) SCIF compatible UART.
- - "renesas,hscif-r8a7778" for R8A7778 (R-Car M1) HSCIF compatible UART.
- - "renesas,scif-r8a7779" for R8A7779 (R-Car H1) SCIF compatible UART.
- - "renesas,hscif-r8a7779" for R8A7779 (R-Car H1) HSCIF compatible UART.
- - "renesas,scif-r8a7790" for R8A7790 (R-Car H2) SCIF compatible UART.
- - "renesas,scifa-r8a7790" for R8A7790 (R-Car H2) SCIFA compatible UART.
- - "renesas,scifb-r8a7790" for R8A7790 (R-Car H2) SCIFB compatible UART.
- - "renesas,hscif-r8a7790" for R8A7790 (R-Car H2) HSCIF compatible UART.
- - "renesas,scif-r8a7791" for R8A7791 (R-Car M2-W) SCIF compatible UART.
- - "renesas,scifa-r8a7791" for R8A7791 (R-Car M2-W) SCIFA compatible UART.
- - "renesas,scifb-r8a7791" for R8A7791 (R-Car M2-W) SCIFB compatible UART.
- - "renesas,hscif-r8a7791" for R8A7791 (R-Car M2-W) HSCIF compatible UART.
- - "renesas,scif-r8a7792" for R8A7792 (R-Car V2H) SCIF compatible UART.
- - "renesas,hscif-r8a7792" for R8A7792 (R-Car V2H) HSCIF compatible UART.
- - "renesas,scif-r8a7793" for R8A7793 (R-Car M2-N) SCIF compatible UART.
- - "renesas,scifa-r8a7793" for R8A7793 (R-Car M2-N) SCIFA compatible UART.
- - "renesas,scifb-r8a7793" for R8A7793 (R-Car M2-N) SCIFB compatible UART.
- - "renesas,hscif-r8a7793" for R8A7793 (R-Car M2-N) HSCIF compatible UART.
- - "renesas,scif-r8a7794" for R8A7794 (R-Car E2) SCIF compatible UART.
- - "renesas,scifa-r8a7794" for R8A7794 (R-Car E2) SCIFA compatible UART.
- - "renesas,scifb-r8a7794" for R8A7794 (R-Car E2) SCIFB compatible UART.
- - "renesas,hscif-r8a7794" for R8A7794 (R-Car E2) HSCIF compatible UART.
- - "renesas,scif-r8a7795" for R8A7795 (R-Car H3) SCIF compatible UART.
- - "renesas,hscif-r8a7795" for R8A7795 (R-Car H3) HSCIF compatible UART.
- - "renesas,scif-r8a7796" for R8A77960 (R-Car M3-W) SCIF compatible UART.
- - "renesas,hscif-r8a7796" for R8A77960 (R-Car M3-W) HSCIF compatible UART.
- - "renesas,scif-r8a77961" for R8A77961 (R-Car M3-W+) SCIF compatible UART.
- - "renesas,hscif-r8a77961" for R8A77961 (R-Car M3-W+) HSCIF compatible UART.
- - "renesas,scif-r8a77965" for R8A77965 (R-Car M3-N) SCIF compatible UART.
- - "renesas,hscif-r8a77965" for R8A77965 (R-Car M3-N) HSCIF compatible UART.
- - "renesas,scif-r8a77970" for R8A77970 (R-Car V3M) SCIF compatible UART.
- - "renesas,hscif-r8a77970" for R8A77970 (R-Car V3M) HSCIF compatible UART.
- - "renesas,scif-r8a77980" for R8A77980 (R-Car V3H) SCIF compatible UART.
- - "renesas,hscif-r8a77980" for R8A77980 (R-Car V3H) HSCIF compatible UART.
- - "renesas,scif-r8a77990" for R8A77990 (R-Car E3) SCIF compatible UART.
- - "renesas,hscif-r8a77990" for R8A77990 (R-Car E3) HSCIF compatible UART.
- - "renesas,scif-r8a77995" for R8A77995 (R-Car D3) SCIF compatible UART.
- - "renesas,hscif-r8a77995" for R8A77995 (R-Car D3) HSCIF compatible UART.
- - "renesas,scifa-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFA compatible UART.
- - "renesas,scifb-sh73a0" for SH73A0 (SH-Mobile AG5) SCIFB compatible UART.
- - "renesas,rcar-gen1-scif" for R-Car Gen1 SCIF compatible UART,
- - "renesas,rcar-gen2-scif" for R-Car Gen2 and RZ/G1 SCIF compatible UART,
- - "renesas,rcar-gen3-scif" for R-Car Gen3 and RZ/G2 SCIF compatible UART,
- - "renesas,rcar-gen2-scifa" for R-Car Gen2 and RZ/G1 SCIFA compatible UART,
- - "renesas,rcar-gen2-scifb" for R-Car Gen2 and RZ/G1 SCIFB compatible UART,
- - "renesas,rcar-gen1-hscif" for R-Car Gen1 HSCIF compatible UART,
- - "renesas,rcar-gen2-hscif" for R-Car Gen2 and RZ/G1 HSCIF compatible UART,
- - "renesas,rcar-gen3-hscif" for R-Car Gen3 and RZ/G2 HSCIF compatible UART,
- - "renesas,scif" for generic SCIF compatible UART.
- - "renesas,scifa" for generic SCIFA compatible UART.
- - "renesas,scifb" for generic SCIFB compatible UART.
- - "renesas,hscif" for generic HSCIF compatible UART.
- - "renesas,sci" for generic SCI compatible UART.
-
- When compatible with the generic version, nodes must list the
- SoC-specific version corresponding to the platform first, followed by the
- family-specific and/or generic versions.
-
- - reg: Base address and length of the I/O registers used by the UART.
- - interrupts: Must contain one or more interrupt-specifiers for the SCIx.
- If a single interrupt is expressed, then all events are
- multiplexed into this single interrupt.
-
- If multiple interrupts are provided by the hardware, the order
- in which the interrupts are listed must match order below. Note
- that some HW interrupt events may be muxed together resulting
- in duplicate entries.
- The interrupt order is as follows:
- 1. Error (ERI)
- 2. Receive buffer full (RXI)
- 3. Transmit buffer empty (TXI)
- 4. Break (BRI)
- 5. Data Ready (DRI)
- 6. Transmit End (TEI)
-
- - clocks: Must contain a phandle and clock-specifier pair for each entry
- in clock-names.
- - clock-names: Must contain "fck" for the SCIx UART functional clock.
- Apart from the divided functional clock, there may be other possible
- sources for the sampling clock, depending on SCIx variant.
- On (H)SCI(F) and some SCIFA, an additional clock may be specified:
- - "hsck" for the optional external clock input (on HSCIF),
- - "sck" for the optional external clock input (on other variants).
- On UARTs equipped with a Baud Rate Generator for External Clock (BRG)
- (some SCIF and HSCIF), additional clocks may be specified:
- - "brg_int" for the optional internal clock source for the frequency
- divider (typically the (AXI or SHwy) bus clock),
- - "scif_clk" for the optional external clock source for the frequency
- divider (SCIF_CLK).
-
-Note: Each enabled SCIx UART may have an optional "serialN" alias in the
-"aliases" node.
-
-Optional properties:
- - dmas: Must contain a list of two references to DMA specifiers, one for
- transmission, and one for reception.
- - dma-names: Must contain a list of two DMA names, "tx" and "rx".
- - {cts,dsr,dcd,rng,rts,dtr}-gpios: Specify GPIOs for modem lines, cfr. the
- generic serial DT bindings in serial.yaml.
- - uart-has-rtscts: Indicates dedicated lines for RTS/CTS hardware flow
- control, cfr. the generic serial DT bindings in serial.yaml.
-
-Example:
- aliases {
- serial0 = &scifa0;
- };
-
- scifa0: serial@e6c40000 {
- compatible = "renesas,scifa-r8a7790",
- "renesas,rcar-gen2-scifa", "renesas,scifa";
- reg = <0 0xe6c40000 0 64>;
- interrupt-parent = <&gic>;
- interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>;
- clock-names = "fck";
- dmas = <&dmac0 0x21>, <&dmac0 0x22>;
- dma-names = "tx", "rx";
- };
diff --git a/Documentation/devicetree/bindings/serial/renesas,sci.yaml b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
new file mode 100644
index 0000000000000000..4183b7311f373abd
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/renesas,sci.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Renesas Serial Communication Interface
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: serial.yaml#
+
+properties:
+ compatible:
+ const: renesas,sci
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ items:
+ - description: Error interrupt
+ - description: Receive buffer full interrupt
+ - description: Transmit buffer empty interrupt
+ - description: Transmit end interrupt
+
+ interrupt-names:
+ items:
+ - const: eri
+ - const: rxi
+ - const: txi
+ - const: tei
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ minItems: 1
+ maxItems: 2
+ items:
+ enum:
+ - fck # UART functional clock
+ - sck # optional external clock input
+
+ uart-has-rtscts: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+examples:
+ - |
+ aliases {
+ serial0 = &sci0;
+ };
+
+ sci0: serial@ffff78 {
+ compatible = "renesas,sci";
+ reg = <0xffff78 8>;
+ interrupts = <88 0>, <89 0>, <90 0>, <91 0>;
+ clocks = <&fclk>;
+ clock-names = "fck";
+ };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
new file mode 100644
index 0000000000000000..70392b9bd97724f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -0,0 +1,172 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/renesas,scif.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Renesas Serial Communication Interface with FIFO (SCIF)
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: serial.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,scif-r7s72100 # RZ/A1H
+ - const: renesas,scif # generic SCIF compatible UART
+
+ - items:
+ - enum:
+ - renesas,scif-r7s9210 # RZ/A2
+
+ - items:
+ - enum:
+ - renesas,scif-r8a7778 # R-Car M1
+ - renesas,scif-r8a7779 # R-Car H1
+ - const: renesas,rcar-gen1-scif # R-Car Gen1
+ - const: renesas,scif # generic SCIF compatible UART
+
+ - items:
+ - enum:
+ - renesas,scif-r8a7743 # RZ/G1M
+ - renesas,scif-r8a7744 # RZ/G1N
+ - renesas,scif-r8a7745 # RZ/G1E
+ - renesas,scif-r8a77470 # RZ/G1C
+ - renesas,scif-r8a7790 # R-Car H2
+ - renesas,scif-r8a7791 # R-Car M2-W
+ - renesas,scif-r8a7792 # R-Car V2H
+ - renesas,scif-r8a7793 # R-Car M2-N
+ - renesas,scif-r8a7794 # R-Car E2
+ - const: renesas,rcar-gen2-scif # R-Car Gen2 and RZ/G1
+ - const: renesas,scif # generic SCIF compatible UART
+
+ - items:
+ - enum:
+ - renesas,scif-r8a774a1 # RZ/G2M
+ - renesas,scif-r8a774b1 # RZ/G2N
+ - renesas,scif-r8a774c0 # RZ/G2E
+ - renesas,scif-r8a7795 # R-Car H3
+ - renesas,scif-r8a7796 # R-Car M3-W
+ - renesas,scif-r8a77961 # R-Car M3-W+
+ - renesas,scif-r8a77965 # R-Car M3-N
+ - renesas,scif-r8a77970 # R-Car V3M
+ - renesas,scif-r8a77980 # R-Car V3H
+ - renesas,scif-r8a77990 # R-Car E3
+ - renesas,scif-r8a77995 # R-Car D3
+ - const: renesas,rcar-gen3-scif # R-Car Gen3 and RZ/G2
+ - const: renesas,scif # generic SCIF compatible UART
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ oneOf:
+ - items:
+ - description: A combined interrupt
+ - items:
+ - description: Error interrupt
+ - description: Receive buffer full interrupt
+ - description: Transmit buffer empty interrupt
+ - description: Transmit End interrupt
+ - items:
+ - description: Error interrupt
+ - description: Receive buffer full interrupt
+ - description: Transmit buffer empty interrupt
+ - description: Break interrupt
+ - description: Data Ready interrupt
+ - description: Transmit End interrupt
+
+ interrupt-names:
+ oneOf:
+ - items:
+ - const: eri
+ - const: rxi
+ - const: txi
+ - const: tei
+ - items:
+ - const: eri
+ - const: rxi
+ - const: txi
+ - const: bri
+ - const: dri
+ - const: tei
+
+ clocks:
+ minItems: 1
+ maxItems: 4
+
+ clock-names:
+ minItems: 1
+ maxItems: 4
+ items:
+ enum:
+ - fck # UART functional clock
+ - sck # optional external clock input
+ - brg_int # optional internal clock source for BRG frequency divider
+ - scif_clk # optional external clock source for BRG frequency divider
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ dmas:
+ description:
+ Must contain a list of pairs of references to DMA specifiers, one for
+ transmission, and one for reception.
+
+ dma-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ enum:
+ - tx
+ - rx
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-scif
+ - renesas,rcar-gen3-scif
+then:
+ required:
+ - resets
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/r8a7791-sysc.h>
+ aliases {
+ serial0 = &scif0;
+ };
+
+ scif0: serial@e6e60000 {
+ compatible = "renesas,scif-r8a7791", "renesas,rcar-gen2-scif",
+ "renesas,scif";
+ reg = <0xe6e60000 64>;
+ interrupts = <GIC_SPI 152 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 721>, <&cpg CPG_CORE R8A7791_CLK_ZS>,
+ <&scif_clk>;
+ clock-names = "fck", "brg_int", "scif_clk";
+ dmas = <&dmac0 0x29>, <&dmac0 0x2a>, <&dmac1 0x29>, <&dmac1 0x2a>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A7791_PD_ALWAYS_ON>;
+ resets = <&cpg 721>;
+ };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scifa.yaml b/Documentation/devicetree/bindings/serial/renesas,scifa.yaml
new file mode 100644
index 0000000000000000..b28bcb268854e844
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/renesas,scifa.yaml
@@ -0,0 +1,107 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/renesas,scifa.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Renesas Serial Communications Interface with FIFO A (SCIFA)
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: serial.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,scifa-r8a73a4 # R-Mobile APE6
+ - renesas,scifa-r8a7740 # R-Mobile A1
+ - renesas,scifa-sh73a0 # SH-Mobile AG5
+ - const: renesas,scifa # generic SCIFA compatible UART
+
+ - items:
+ - enum:
+ - renesas,scifa-r8a7743 # R8A7743 RZ/G1M
+ - renesas,scifa-r8a7744 # R8A7744 RZ/G1N
+ - renesas,scifa-r8a7745 # R8A7745 RZ/G1E
+ - renesas,scifa-r8a7790 # R8A7790 R-Car H2
+ - renesas,scifa-r8a7791 # R8A7791 R-Car M2-W
+ - renesas,scifa-r8a7793 # R8A7793 R-Car M2-N
+ - renesas,scifa-r8a7794 # R8A7794 R-Car E2
+ - const: renesas,rcar-gen2-scifa # R-Car Gen2 and RZ/G1
+ - const: renesas,scifa # generic SCIFA compatible UART
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ enum:
+ - fck # UART functional clock
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ dmas:
+ description:
+ Must contain a list of pairs of references to DMA specifiers, one for
+ transmission, and one for reception.
+
+ dma-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ enum:
+ - tx
+ - rx
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-scifa
+then:
+ required:
+ - resets
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/power/r8a7790-sysc.h>
+ aliases {
+ serial0 = &scifa0;
+ };
+
+ scifa0: serial@e6c40000 {
+ compatible = "renesas,scifa-r8a7790", "renesas,rcar-gen2-scifa",
+ "renesas,scifa";
+ reg = <0xe6c40000 64>;
+ interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 204>;
+ clock-names = "fck";
+ power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
+ resets = <&cpg 204>;
+ dmas = <&dmac0 0x21>, <&dmac0 0x22>, <&dmac1 0x21>, <&dmac1 0x22>;
+ dma-names = "tx", "rx", "tx", "rx";
+ };
diff --git a/Documentation/devicetree/bindings/serial/renesas,scifb.yaml b/Documentation/devicetree/bindings/serial/renesas,scifb.yaml
new file mode 100644
index 0000000000000000..57205cb1dcd42183
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/renesas,scifb.yaml
@@ -0,0 +1,98 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/serial/renesas,scifb.yaml#";
+$schema: "http://devicetree.org/meta-schemas/core.yaml#";
+
+title: Renesas Serial Communications Interface with FIFO B (SCIFB)
+
+maintainers:
+ - Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
+
+allOf:
+ - $ref: serial.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - renesas,scifb-r8a73a4 # R-Mobile APE6
+ - renesas,scifb-r8a7740 # R-Mobile A1
+ - renesas,scifb-sh73a0 # SH-Mobile AG5
+ - const: renesas,scifb # generic SCIFB compatible UART
+
+ - items:
+ - enum:
+ - renesas,scifb-r8a7743 # RZ/G1M
+ - renesas,scifb-r8a7744 # RZ/G1N
+ - renesas,scifb-r8a7745 # RZ/G1E
+ - renesas,scifb-r8a7790 # R-Car H2
+ - renesas,scifb-r8a7791 # R-Car M2-W
+ - renesas,scifb-r8a7793 # R-Car M2-N
+ - renesas,scifb-r8a7794 # R-Car E2
+ - const: renesas,rcar-gen2-scifb # R-Car Gen2 and RZ/G1
+ - const: renesas,scifb # generic SCIFB compatible UART
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ enum:
+ - fck # UART functional clock
+
+ power-domains:
+ maxItems: 1
+
+ resets:
+ maxItems: 1
+
+ dmas:
+ description:
+ Must contain a list of pairs of references to DMA specifiers, one for
+ transmission, and one for reception.
+
+ dma-names:
+ minItems: 2
+ maxItems: 4
+ items:
+ enum:
+ - tx
+ - rx
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - power-domains
+
+if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - renesas,rcar-gen2-scifb
+then:
+ required:
+ - resets
+
+examples:
+ - |
+ #include <dt-bindings/clock/r8a7740-clock.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ scifb: serial@e6c30000 {
+ compatible = "renesas,scifb-r8a7740", "renesas,scifb";
+ reg = <0xe6c30000 0x100>;
+ interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&mstp2_clks R8A7740_CLK_SCIFB>;
+ clock-names = "fck";
+ power-domains = <&pd_a3sp>;
+ };
--
2.17.1
