linux-kernel - [PATCH linux v2 1/3] spi: dt-bindings: aspeed: Add a ranges property

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Date:   Mon, 17 Oct 2022 11:16:22 +0200
From:   Cédric Le Goater <clg@...d.org>
To:     linux-spi@...r.kernel.org
Cc:     Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-aspeed@...ts.ozlabs.org,
        openbmc@...ts.ozlabs.org, Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Cédric Le Goater <clg@...d.org>,
        Naresh Solanki <naresh.solanki@...ements.com>
Subject: [PATCH linux v2 1/3] spi: dt-bindings: aspeed: Add a ranges property

"ranges" predefines settings for the decoding ranges of each CS.

Cc: Naresh Solanki <naresh.solanki@...ements.com>
Cc: Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>
Signed-off-by: Cédric Le Goater <clg@...d.org>
---
 .../devicetree/bindings/spi/aspeed,ast2600-fmc.yaml      | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml b/Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml
index fa8f4ac20985..a11cbc4c4c5c 100644
--- a/Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml
+++ b/Documentation/devicetree/bindings/spi/aspeed,ast2600-fmc.yaml
@@ -38,6 +38,14 @@ properties:
   interrupts:
     maxItems: 1
 
+  ranges:
+    minItems: 1
+    maxItems: 5
+    description: |
+      Defines the address mapping for child devices with four integer
+      values for each chip-select line in use:
+      <cs-number> 0 <physical address of mapping> <size>
+
 required:
   - compatible
   - reg
@@ -58,6 +66,7 @@ examples:
         compatible = "aspeed,ast2600-fmc";
         clocks = <&syscon ASPEED_CLK_AHB>;
         interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>;
+        ranges = <0 0 0x20000000 0x2000000>, <1 0 0x22000000 0x2000000>;
 
         flash@0 {
                 reg = < 0 >;
-- 
2.37.3