From 5384f45cd9714287f198771bfb057eda799af9a8 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 14 Nov 2016 19:37:07 +0100 Subject: [PATCH] ARM: shmobile: Document DT bindings for Product Register Add device tree binding documentation for the Product Register (PRR), which provides product and revision information on most Renesas ARM SoCs. Signed-off-by: Geert Uytterhoeven Acked-by: Rob Herring Signed-off-by: Simon Horman --- .../devicetree/bindings/arm/shmobile.txt | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt index 2f0b7169f132..23c77315fdac 100644 --- a/Documentation/devicetree/bindings/arm/shmobile.txt +++ b/Documentation/devicetree/bindings/arm/shmobile.txt @@ -75,3 +75,21 @@ Boards: compatible = "renesas,silk", "renesas,r8a7794" - Wheat compatible = "renesas,wheat", "renesas,r8a7792" + + +Most Renesas ARM SoCs have a Product Register that allows to retrieve SoC +product and revision information. If present, a device node for this register +should be added. + +Required properties: + - compatible: Must be "renesas,prr". + - reg: Base address and length of the register block. + + +Examples +-------- + + prr: chipid@ff000044 { + compatible = "renesas,prr"; + reg = <0 0xff000044 0 4>; + };