From patchwork Thu Jun 16 09:20:24 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gabriel Fernandez X-Patchwork-Id: 636312 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3rVdL84tFcz9sxR for ; Thu, 16 Jun 2016 19:26:24 +1000 (AEST) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b=VcLZXnNQ; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753910AbcFPJZ5 (ORCPT ); Thu, 16 Jun 2016 05:25:57 -0400 Received: from mail-wm0-f49.google.com ([74.125.82.49]:37122 "EHLO mail-wm0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753840AbcFPJU5 (ORCPT ); Thu, 16 Jun 2016 05:20:57 -0400 Received: by mail-wm0-f49.google.com with SMTP id a66so48392688wme.0 for ; Thu, 16 Jun 2016 02:20:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Mz2/wK2vmjXVAei4bOSaNqqtGr4Fk5pJqthQTTkva0g=; b=VcLZXnNQxiD19Qd611GD9n9OmJ1UnZXxK6SdGqmO13KCYW/tm+chy4u47AeDoV6JO6 u4J/HIL5FqKuu9P6g0lOg5icP+oqRaijDYNc/fXHGIjYbmEvhjmg6VoT8y6IbEYceeSc q+ph2hYDU3tl5/NsUeGceM/KJx4LcMicL1vMU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Mz2/wK2vmjXVAei4bOSaNqqtGr4Fk5pJqthQTTkva0g=; b=ZUiRry5k4WulpbqPz3nObYFY2Uhi2sBQqTB8hnZXvhp3Ii/q23/zExad6HpMzqA+zC jwZV42N34S2tWUjjqkyKgWUOOWX2kqSo5G6nnys+kPryqRsytyT3hxL8/PRScANRdDUV FkAP1KHBsCrB6vunUZW42VPW46kcXqr3oLIr+mv6k/DUMuWlOEgN2QbV1wFBm7tLXPKX El5BVBqqfyrLlJkXu8Lzj8zMIBg/5NpZbeh1m+5kwKZK2LYQG3lsHHeCzhQJR8HnNs6/ DhGsMXxTyBDk7SsJ60XfI985mr9YCnu+cjqHfZSu+2wpdsE3lhlnISy6r0C0xzAtb9bC og7g== X-Gm-Message-State: ALyK8tJnfPgTfmVkYECJSR7tE+PbZpj8UhMbfjohQWHfH8f68JvN6AvYFHeFZkJ0PUbTvOOr X-Received: by 10.28.26.67 with SMTP id a64mr13765145wma.70.1466068855304; Thu, 16 Jun 2016 02:20:55 -0700 (PDT) Received: from lmenx315.st.com. ([80.12.42.230]) by smtp.gmail.com with ESMTPSA id db6sm42619757wjb.2.2016.06.16.02.20.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 16 Jun 2016 02:20:54 -0700 (PDT) From: Gabriel Fernandez To: Rob Herring , Mark Rutland , Ian Campbell , Kumar Gala , Srinivas Kandagatla , Maxime Coquelin , Patrice Chotard , Russell King , Michael Turquette , Stephen Boyd , Olivier Bideau , Gabriel Fernandez , Geert Uytterhoeven , Sebastian Hesselbarth , Andrzej Hajda , Pankaj Dev , Dinh Nguyen , Arnd Bergmann , Thierry Reding Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel@stlinux.com, linux-clk@vger.kernel.org, Lee Jones , Peter Griffin , , , , Subject: [RESEND PATCH v2 04/13] drivers: clk: st: Add clock propagation for audio clocks Date: Thu, 16 Jun 2016 11:20:24 +0200 Message-Id: <1466068833-5055-5-git-send-email-gabriel.fernandez@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1466068833-5055-1-git-send-email-gabriel.fernandez@linaro.org> References: <1466068833-5055-1-git-send-email-gabriel.fernandez@linaro.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch allows fine tuning of the quads FS for audio clocks accuracy. Signed-off-by: Olivier Bideau Signed-off-by: Gabriel Fernandez --- .../devicetree/bindings/clock/st/st,flexgen.txt | 2 ++ drivers/clk/st/clk-flexgen.c | 24 ++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/Documentation/devicetree/bindings/clock/st/st,flexgen.txt b/Documentation/devicetree/bindings/clock/st/st,flexgen.txt index b7ee5c7..d68f6a5f 100644 --- a/Documentation/devicetree/bindings/clock/st/st,flexgen.txt +++ b/Documentation/devicetree/bindings/clock/st/st,flexgen.txt @@ -60,6 +60,8 @@ This binding uses the common clock binding[2]. Required properties: - compatible : shall be: "st,flexgen" + "st,flexgen-audio", "st,flexgen" (enable clock propagation on parent for + audio use case) - #clock-cells : from common clock binding; shall be set to 1 (multiple clock outputs). diff --git a/drivers/clk/st/clk-flexgen.c b/drivers/clk/st/clk-flexgen.c index 627267c..33d6ced 100644 --- a/drivers/clk/st/clk-flexgen.c +++ b/drivers/clk/st/clk-flexgen.c @@ -15,6 +15,10 @@ #include #include +struct clkgen_data { + unsigned long flags; +}; + struct flexgen { struct clk_hw hw; @@ -259,6 +263,18 @@ static const char ** __init flexgen_get_parents(struct device_node *np, return parents; } +static const struct clkgen_data clkgen_audio = { + .flags = CLK_SET_RATE_PARENT, +}; + +static const struct of_device_id flexgen_of_match[] = { + { + .compatible = "st,flexgen-audio", + .data = &clkgen_audio, + }, + {} +}; + static void __init st_of_flexgen_setup(struct device_node *np) { struct device_node *pnode; @@ -267,6 +283,8 @@ static void __init st_of_flexgen_setup(struct device_node *np) const char **parents; int num_parents, i; spinlock_t *rlock = NULL; + const struct of_device_id *match; + struct clkgen_data *data = NULL; unsigned long flex_flags = 0; int ret; @@ -282,6 +300,12 @@ static void __init st_of_flexgen_setup(struct device_node *np) if (!parents) return; + match = of_match_node(flexgen_of_match, np); + if (match) { + data = (struct clkgen_data *)match->data; + flex_flags = data->flags; + } + clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL); if (!clk_data) goto err;