linux-kernel - [PATCH] ARM: dts: ux500: Add "simple-bus" compatible to soc node

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Date:   Sun, 24 Nov 2019 20:57:28 +0100
From:   Stephan Gerhold <stephan@...hold.net>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Stephan Gerhold <stephan@...hold.net>
Subject: [PATCH] ARM: dts: ux500: Add "simple-bus" compatible to soc node

The "soc" node in the Ux500 device tree does not need any special
handling - it is just a simple I/O bus that can be accessed without
additional configuration.

Therefore we can additionally describe it as compatible with "simple-bus".
This can be used by platforms to probe devices under the soc node without
special handling for our custom "stericsson,db8500" compatible
(e.g. in U-Boot).

Signed-off-by: Stephan Gerhold <stephan@...hold.net>
---
 arch/arm/boot/dts/ste-dbx5x0.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi
index bda454d12150..51ac65b78be0 100644
--- a/arch/arm/boot/dts/ste-dbx5x0.dtsi
+++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi
@@ -93,7 +93,7 @@
 	soc {
 		#address-cells = <1>;
 		#size-cells = <1>;
-		compatible = "stericsson,db8500";
+		compatible = "stericsson,db8500", "simple-bus";
 		interrupt-parent = <&intc>;
 		ranges;
 
-- 
2.24.0