From patchwork Wed Oct 29 11:52:03 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Zhong X-Patchwork-Id: 5187081 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id B4D129F349 for ; Wed, 29 Oct 2014 11:55:50 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DCA542024C for ; Wed, 29 Oct 2014 11:55:49 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E63B72024F for ; Wed, 29 Oct 2014 11:55:48 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XjRqt-0006Aj-HH; Wed, 29 Oct 2014 11:55:47 +0000 Received: from mail-pd0-f178.google.com ([209.85.192.178]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XjRoi-0002uy-Ij for linux-rockchip@lists.infradead.org; Wed, 29 Oct 2014 11:53:33 +0000 Received: by mail-pd0-f178.google.com with SMTP id fp1so2803628pdb.23 for ; Wed, 29 Oct 2014 04:53:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=e7oessmzSymD/QGjSltFgP5GVX5R0BCxwCPZ/Wmq7fQ=; b=QX1FYSJGdY3hcMj+ViB8PI71riabrvVZRAHqOYpJg9rpfFaq+aJe0igYVEbjJOwFuz Cz4IXCnStRwVXZmGw4c0js+ZZOqg2d/sqDHXD5UruKJRvckotcgu4cJ7TDbcT7qoQ51B kRaZQKEIKL0fj//ZEGS2o+pP54esSNyMty0orxX9VNpJAm/ka9yOPiVSzRyLlxzpUHEa sh+Rh7I5plSTEqrxElx/7pxiOstr37H0Wv4STHgq17uwIeEIuZEUudwj8LtntHdskFY8 3jWxJosGsX6cEHOS5zsU3vIe46fya+rMJMrS0OhggjOzueh3Q8aQz40St9H32qbcHbjp VXyw== X-Received: by 10.66.159.3 with SMTP id wy3mr9808891pab.98.1414583590928; Wed, 29 Oct 2014 04:53:10 -0700 (PDT) Received: from localhost.localdomain ([104.166.103.139]) by mx.google.com with ESMTPSA id tc8sm3441987pab.19.2014.10.29.04.53.05 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 29 Oct 2014 04:53:09 -0700 (PDT) From: Chris Zhong To: heiko@sntech.de, dianders@chromium.org Subject: [PATCH v6 5/7] ARM: rockchip: Add pmu-sram binding Date: Wed, 29 Oct 2014 19:52:03 +0800 Message-Id: <1414583525-17395-6-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1414583525-17395-1-git-send-email-zyw@rock-chips.com> References: <1414583525-17395-1-git-send-email-zyw@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141029_045332_636142_1336CA0A X-CRM114-Status: GOOD ( 10.40 ) X-Spam-Score: -0.5 (/) Cc: Mark Rutland , devicetree@vger.kernel.org, Russell King , Pawel Moll , Ian Campbell , Linus Walleij , khilman@kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Rob Herring , Kumar Gala , Chris Zhong , mturquette@linaro.org, Tony Xie X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The pmu-sram is used to store resume code, suspend/resume need get the address of it. Therefore add a binding and documentation for it. Signed-off-by: Tony Xie Signed-off-by: Chris Zhong Reviewed-by: Doug Anderson --- Changes in v6: - change pmu_intmem@ff720000 to sram@ff720000 Changes in v5: - change the size of sram in example Changes in v4: None Changes in v3: None Changes in v2: None .../devicetree/bindings/arm/rockchip/pmu-sram.txt | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt diff --git a/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt b/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt new file mode 100644 index 0000000..6b42fda --- /dev/null +++ b/Documentation/devicetree/bindings/arm/rockchip/pmu-sram.txt @@ -0,0 +1,16 @@ +Rockchip SRAM for pmu: +------------------------------ + +The sram of pmu is used to store the function of resume from maskrom(the 1st +level loader). This is a common use of the "pmu-sram" because it keeps power +even in low power states in the system. + +Required node properties: +- compatible : should be "rockchip,rk3288-pmu-sram" +- reg : physical base address and the size of the registers window + +Example: + sram@ff720000 { + compatible = "rockchip,rk3288-pmu-sram", "mmio-sram"; + reg = <0xff720000 0x1000>; + };