From patchwork Mon Oct 27 13:47:29 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Zhong X-Patchwork-Id: 5160831 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 DCB289F318 for ; Mon, 27 Oct 2014 13:49:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 060532024F for ; Mon, 27 Oct 2014 13:49:00 +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 345E8201E4 for ; Mon, 27 Oct 2014 13:48:59 +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 1XikfK-0004yl-TX; Mon, 27 Oct 2014 13:48:58 +0000 Received: from mail-pd0-f196.google.com ([209.85.192.196]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XikfJ-0004jJ-DP for linux-rockchip@lists.infradead.org; Mon, 27 Oct 2014 13:48:57 +0000 Received: by mail-pd0-f196.google.com with SMTP id r10so2353889pdi.7 for ; Mon, 27 Oct 2014 06:48:36 -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=Ezlyx+YwyExotfdyElQR4AllUg+kfavP6ae/T1hM92k=; b=eQKB1DZd2Q8fvZ6VRRLhG0b9yqP8xiFfz0qjahXppTOHgVkJbNq/nxkWT66O4Oyssd cZJWqZ7t5mvPAX4WlvEPsShZOv7+3UCSrrmERg+vPdKAl3vpUNahajShVMbk2HVbaw5X 5WYWRGYqflimkzJ5SVAihBmOLQfayITkpbb3PEtVBFSLegRtsPV228InqGL0nPxLmU4b rVpy9uX0P5NyMBxMUPuNmO5gT0rakgTdHt6E/zRCyEcTigmmRpQrx0n/XjOTmLan+FIy EuC6QA7PY/xxwPu2CpkG66KG+wTTF8L9CbGjGXunpS6ughkzQk/mJuWWNTbBN0PzzwO+ fxbA== X-Received: by 10.66.139.106 with SMTP id qx10mr2395753pab.138.1414417716215; Mon, 27 Oct 2014 06:48:36 -0700 (PDT) Received: from localhost.localdomain ([58.22.7.114]) by mx.google.com with ESMTPSA id cc2sm9971830pbd.62.2014.10.27.06.48.28 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 27 Oct 2014 06:48:35 -0700 (PDT) From: Chris Zhong To: heiko@sntech.de, dianders@chromium.org Subject: [PATCH v5 5/6] ARM: rockchip: Add pmu-sram binding Date: Mon, 27 Oct 2014 21:47:29 +0800 Message-Id: <1414417650-19402-6-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1414417650-19402-1-git-send-email-zyw@rock-chips.com> References: <1414417650-19402-1-git-send-email-zyw@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141027_064857_486255_5EE06483 X-CRM114-Status: GOOD ( 10.19 ) X-Spam-Score: -0.5 (/) Cc: Mark Rutland , Russell King , Pawel Moll , Ian Campbell , Linus Walleij , khilman@kernel.org, linux-rockchip@lists.infradead.org, Rob Herring , 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 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..e764b9c --- /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: + pmu_intmem@ff720000 { + compatible = "rockchip,rk3288-pmu-sram", "mmio-sram"; + reg = <0xff720000 0x1000>; + };