From patchwork Wed Apr 10 22:02:57 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mike Turquette X-Patchwork-Id: 235495 Return-Path: X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 083D02C00BD for ; Thu, 11 Apr 2013 08:05:07 +1000 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UQ37c-0002pW-8N; Wed, 10 Apr 2013 22:04:04 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UQ37K-0008E6-9H; Wed, 10 Apr 2013 22:03:46 +0000 Received: from mail-pa0-f50.google.com ([209.85.220.50]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UQ36r-0008C4-VW for linux-arm-kernel@lists.infradead.org; Wed, 10 Apr 2013 22:03:19 +0000 Received: by mail-pa0-f50.google.com with SMTP id bg2so533014pad.23 for ; Wed, 10 Apr 2013 15:03:16 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=x-received:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references:mime-version:content-type:content-transfer-encoding :x-gm-message-state; bh=QY22+gB5eQ/HSqtb9Iu5t4ErZdQkXGXX7DTdAbujGDk=; b=V2lmKiRLavl1Wl7RZAr0LYjqF5BeUlCpNzWZOp+LtEOJ1RhihUr+4uYXlZpN3GbKFo 2GwSrIOr8SOZ8Se3+VCCVds1ZxiFp2a3vVjpH83zU1xTVh3HHefrxBATnDV0DX0h38fF BmWelXjDC5MfDNIPqWgp54PC4aR/p8AlwpVMsRvtrXFEvHE0cYZs3430FxKOCeZialb2 n1CVrFo7kGwU/Pc4tafmWUvnN4WT5ALbBuiQ+t3htxN/R29FmO3p/TIc6W9+DU11OxwD eVU5BShuba6fC/bR420CZnOx3Jha+bdeBkzNrp9Gg3DhEImX4/t19ESO+57Tff6jiemJ sqRg== X-Received: by 10.66.52.50 with SMTP id q18mr5971476pao.201.1365631396436; Wed, 10 Apr 2013 15:03:16 -0700 (PDT) Received: from quantum.gateway.2wire.net (adsl-69-228-93-79.dsl.pltn13.pacbell.net. [69.228.93.79]) by mx.google.com with ESMTPS id z8sm1394888pbt.23.2013.04.10.15.03.13 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 10 Apr 2013 15:03:15 -0700 (PDT) From: Mike Turquette To: Emilio Lopez Subject: [PATCH v2 3/3] clk: sunxi: Unify oscillator clock Date: Wed, 10 Apr 2013 15:02:57 -0700 Message-Id: <1365631378-16103-4-git-send-email-mturquette@linaro.org> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1365631378-16103-1-git-send-email-mturquette@linaro.org> References: <1365515284-32061-2-git-send-email-emilio@elopez.com.ar> <1365631378-16103-1-git-send-email-mturquette@linaro.org> MIME-Version: 1.0 X-Gm-Message-State: ALoCoQkB0Riglw1QLANyIujz409PJx1aRfPcIlxnBW4Tz3CYHAGay5yxc++bcBeEoyIGlhkCHdxZ X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130410_180318_184058_B406A4E5 X-CRM114-Status: GOOD ( 14.36 ) X-Spam-Score: -2.6 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.220.50 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Gregory CLEMENT , Maxime Ripard , Prashant Gaikwad , Mike Turquette , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org From: Emilio López This commit uses the new fixed-rate support on the composite clock to unify osc24M_fixed and osc24M clocks, so it matches the actual hardware. Signed-off-by: Emilio López Signed-off-by: Mike Turquette [mturquette@linaro.org: replace clk_register_gatable_osc with a call to clk_register_composite] Tested-by: Emilio López --- Emilio, I haven't been able to test these changes at run-time. Can you see if they are valid for solving your issue on sunxi? drivers/clk/sunxi/clk-sunxi.c | 33 ++++++++++++++++++++++++++------- 1 file changed, 26 insertions(+), 7 deletions(-) diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c index 0bb0eb4..8492ad1 100644 --- a/drivers/clk/sunxi/clk-sunxi.c +++ b/drivers/clk/sunxi/clk-sunxi.c @@ -33,16 +33,36 @@ static DEFINE_SPINLOCK(clk_lock); static void __init sunxi_osc_clk_setup(struct device_node *node) { struct clk *clk; + struct clk_fixed_rate *fixed; + struct clk_gate *gate; const char *clk_name = node->name; - const char *parent; - void *reg; + u32 rate; - reg = of_iomap(node, 0); + /* allocate fixed-rate and gate clock structs */ + fixed = kzalloc(sizeof(struct clk_fixed_rate), GFP_KERNEL); + if (!fixed) + return; + gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL); + if (!gate) { + kfree(fixed); + return; + } - parent = of_clk_get_parent_name(node, 0); + if (of_property_read_u32(node, "clock-frequency", &rate)) + return; + + /* set up gate and fixed rate properties */ + gate->reg = of_iomap(node, 0); + gate->bit_idx = SUNXI_OSC24M_GATE; + gate->lock = &clk_lock; + fixed->fixed_rate = rate; - clk = clk_register_gate(NULL, clk_name, parent, 0, reg, - SUNXI_OSC24M_GATE, 0, &clk_lock); + clk = clk_register_composite(NULL, clk_name, + NULL, 0, + NULL, NULL, + &fixed->hw, &clk_fixed_rate_ops, + &gate->hw, &clk_gate_ops, + CLK_IS_ROOT); if (clk) { of_clk_add_provider(node, of_clk_src_simple_get, clk); @@ -380,7 +400,6 @@ static void __init sunxi_gates_clk_setup(struct device_node *node, /* Matches for of_clk_init */ static const __initconst struct of_device_id clk_match[] = { - {.compatible = "fixed-clock", .data = of_fixed_clk_setup,}, {.compatible = "allwinner,sun4i-osc-clk", .data = sunxi_osc_clk_setup,}, {} };