linux-kernel - [PATCH 2/3] dt-bindings: serial: renesas,sci: Document RZ/G2L SoC

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Message-Id: <20211103173127.13701-3-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date:   Wed,  3 Nov 2021 17:31:26 +0000
From:   Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
To:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>
Cc:     linux-serial@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Prabhakar <prabhakar.csengg@...il.com>,
        Biju Das <biju.das.jz@...renesas.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH 2/3] dt-bindings: serial: renesas,sci: Document RZ/G2L SoC

Add SCI binding documentation for Renesas RZ/G2L SoC.

Also update the example node with real world DT node.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
---
 .../bindings/serial/renesas,sci.yaml          | 43 ++++++++++++++++---
 1 file changed, 37 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/serial/renesas,sci.yaml b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
index 22ed2f0b1dc3..6fc573406240 100644
--- a/Documentation/devicetree/bindings/serial/renesas,sci.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,sci.yaml
@@ -14,7 +14,11 @@ allOf:
 
 properties:
   compatible:
-    const: renesas,sci
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a07g044-sci     # RZ/G2{L,LC}
+          - const: renesas,sci            # generic SCI compatible UART
 
   reg:
     maxItems: 1
@@ -54,18 +58,45 @@ required:
   - clocks
   - clock-names
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - renesas,r9a07g044-sci
+then:
+  properties:
+    resets:
+      maxItems: 1
+
+    power-domains:
+      maxItems: 1
+
+  required:
+    - resets
+    - power-domains
+
 unevaluatedProperties: false
 
 examples:
   - |
+    #include <dt-bindings/clock/r9a07g044-cpg.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
     aliases {
             serial0 = &sci0;
     };
 
-    sci0: serial@...f78 {
-            compatible = "renesas,sci";
-            reg = <0xffff78 8>;
-            interrupts = <88 0>, <89 0>, <90 0>, <91 0>;
-            clocks = <&fclk>;
+    sci0: serial@...4d000 {
+            compatible = "renesas,r9a07g044-sci", "renesas,sci";
+            reg = <0x1004d000 0x400>;
+            interrupts = <GIC_SPI 405 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 406 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 407 IRQ_TYPE_LEVEL_HIGH>,
+                         <GIC_SPI 408 IRQ_TYPE_LEVEL_HIGH>;
+            interrupt-names = "eri", "rxi", "txi", "tei";
+            clocks = <&cpg CPG_MOD R9A07G044_SCI0_CLKP>;
             clock-names = "fck";
+            power-domains = <&cpg>;
+            resets = <&cpg R9A07G044_SCI0_RST>;
     };
-- 
2.17.1