Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752360AbdFNMGL (ORCPT ); Wed, 14 Jun 2017 08:06:11 -0400 Received: from mail-wr0-f178.google.com ([209.85.128.178]:34207 "EHLO mail-wr0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751624AbdFNMFx (ORCPT ); Wed, 14 Jun 2017 08:05:53 -0400 From: Neil Armstrong To: khilman@baylibre.com, carlo@caione.org Cc: Neil Armstrong , linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v3 1/3] dt-bindings: arm: amlogic: Add SoC information bindings Date: Wed, 14 Jun 2017 14:05:44 +0200 Message-Id: <1497441946-24379-2-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1497441946-24379-1-git-send-email-narmstrong@baylibre.com> References: <1497441946-24379-1-git-send-email-narmstrong@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1513 Lines: 46 Add bindings for the SoC information register of the Amlogic SoCs. Signed-off-by: Neil Armstrong --- Documentation/devicetree/bindings/arm/amlogic.txt | 29 +++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/amlogic.txt b/Documentation/devicetree/bindings/arm/amlogic.txt index 5c01e65..a6d8754 100644 --- a/Documentation/devicetree/bindings/arm/amlogic.txt +++ b/Documentation/devicetree/bindings/arm/amlogic.txt @@ -60,3 +60,32 @@ Board compatible values (alphabetically, grouped by SoC): - "amlogic,q201" (Meson gxm s912) - "kingnovel,r-box-pro" (Meson gxm S912) - "nexbox,a1" (Meson gxm s912) + +Amlogic Meson Firmware registers Interface +------------------------------------------ + +The Meson SoCs have a register bank with status and data shared with the +secure firmware. + +Required properties: + - compatible: For Meson GX SoCs, must be "amlogic,meson-gx-ao-secure", "syscon" + +Properties should indentify components of this register interface : + +Meson GX SoC Information +------------------------ +A firmware register encodes the SoC type, package and revision information on +the Meson GX SoCs. +If present, the following property should be added : + +Optional properties: + - has-chip-id: If present, the interface gives the current SoC version. + +Example +------- + +ao-secure@140 { + compatible = "amlogic,meson-gx-ao-secure", "syscon"; + reg = <0x0 0x140 0x0 0x140>; + has-chip-id; +}; -- 1.9.1