From patchwork Tue Nov 25 07:32:21 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Zhong X-Patchwork-Id: 5372941 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F3AC7C11AD for ; Tue, 25 Nov 2014 07:34:00 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0ED4E201D3 for ; Tue, 25 Nov 2014 07:34:00 +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 A1DE8201C7 for ; Tue, 25 Nov 2014 07:33:58 +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 1XtAdK-0007sS-0Z; Tue, 25 Nov 2014 07:33:58 +0000 Received: from mail-pd0-f181.google.com ([209.85.192.181]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XtAcb-0007QG-It for linux-rockchip@lists.infradead.org; Tue, 25 Nov 2014 07:33:14 +0000 Received: by mail-pd0-f181.google.com with SMTP id z10so36879pdj.12 for ; Mon, 24 Nov 2014 23:32:55 -0800 (PST) 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=oCwNnnbJrMMdVxuu96rb/g4linA8TUXLl+tUoY9c7uY=; b=a01DniuzCw9rVn1vlF1QH2dGJ7esZOi9Bd5CmZZbe9FhE/zZTueR7YTUPQ6085W4Im nKSS2zAmjE8URGSdOrjQ0pQyHcVQbRHOuqzUGXIQbc3CvkiBrMl3wr0m2ZYGxYixWWGV 444YDvo83cd4jHtjLonkUFYsFy44K5jnnB6iYYWkgI8pKkqpA1mysbW5WEXPcfxUNJUP 6DpT336TiPeAWWzJ46aeIpAGN8LOF1AnLRDX16FgxT4XUZRi2k9BOaQfm9enF0E7Qxu5 71H0oZQNwW7iJet1gji/THr7eydbtke+2aNhxVaP9lWg+qqT33T1aKb7Lkgg2zIhqfkw n2oQ== X-Received: by 10.70.35.104 with SMTP id g8mr7486499pdj.122.1416900775740; Mon, 24 Nov 2014 23:32:55 -0800 (PST) Received: from localhost.localdomain ([58.22.7.114]) by mx.google.com with ESMTPSA id o17sm604367pdn.33.2014.11.24.23.32.48 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 24 Nov 2014 23:32:54 -0800 (PST) From: Chris Zhong To: heiko@sntech.de, dianders@chromium.org Subject: [PATCH v9 2/4] ARM: rockchip: Add pmu-sram binding Date: Tue, 25 Nov 2014 15:32:21 +0800 Message-Id: <1416900743-29204-3-git-send-email-zyw@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1416900743-29204-1-git-send-email-zyw@rock-chips.com> References: <1416900743-29204-1-git-send-email-zyw@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141124_233313_658324_B2A12DBB X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.4 (/) 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=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, T_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 v9: None Changes in v8: None Changes in v7: None 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>; + };