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 <geert+rene...@glider.be> Acked-by: Rob Herring <r...@kernel.org> --- v3: - Add Acked-by, - Drop "renesas,cccr", as the CCCR is not a lone register, but part of the HPB/APB block, which will need its own set of bindings, v2: - New. --- Documentation/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 a1e94da0e322c8f4..1be9e8a7e2c43dfc 100644 --- a/Documentation/devicetree/bindings/arm/shmobile.txt +++ b/Documentation/devicetree/bindings/arm/shmobile.txt @@ -81,3 +81,21 @@ Boards: compatible = "renesas,sk-rzg1m", "renesas,r8a7743" - 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>; + }; -- 1.9.1