From patchwork Thu May 23 17:31:28 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 2608491 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork2.kernel.org (Postfix) with ESMTP id 3A925DFB78 for ; Thu, 23 May 2013 17:32:24 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UfZNG-0002ur-F4; Thu, 23 May 2013 17:32:22 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UfZND-0003kH-Jg; Thu, 23 May 2013 17:32:19 +0000 Received: from eu1sys200aog111.obsmtp.com ([207.126.144.131]) by merlin.infradead.org with smtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UfZN8-0003iS-Vz for linux-arm-kernel@lists.infradead.org; Thu, 23 May 2013 17:32:16 +0000 Received: from beta.dmz-us.st.com ([167.4.1.35]) (using TLSv1) by eu1sys200aob111.postini.com ([207.126.147.11]) with SMTP ID DSNKUZ5Sgyp/iAoMRuj6lW6/Ksh7NgV3b/bU@postini.com; Thu, 23 May 2013 17:32:14 UTC Received: from zeta.dmz-us.st.com (ns4.st.com [167.4.16.71]) by beta.dmz-us.st.com (STMicroelectronics) with ESMTP id 25DFE50; Thu, 23 May 2013 17:30:47 +0000 (GMT) Received: from relay1.stm.gmessaging.net (unknown [10.230.100.17]) by zeta.dmz-us.st.com (STMicroelectronics) with ESMTP id EDBAD4E; Thu, 23 May 2013 17:31:44 +0000 (GMT) Received: from exdcvycastm003.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm003", Issuer "exdcvycastm003" (not verified)) by relay1.stm.gmessaging.net (Postfix) with ESMTPS id 8C40F24C2C0; Thu, 23 May 2013 19:31:35 +0200 (CEST) Received: from steludxu4075.lud.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.1) with Microsoft SMTP Server (TLS) id 8.3.279.5; Thu, 23 May 2013 19:31:44 +0200 From: Linus Walleij To: , Rob Herring , Mike Turquette Subject: [PATCH 6/6] ARM: u300: convert MMC/SD clock to device tree Date: Thu, 23 May 2013 19:31:28 +0200 Message-ID: <1369330288-14856-7-git-send-email-linus.walleij@stericsson.com> X-Mailer: git-send-email 1.7.11.3 In-Reply-To: <1369330288-14856-1-git-send-email-linus.walleij@stericsson.com> References: <1369330288-14856-1-git-send-email-linus.walleij@stericsson.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130523_133215_260298_6AF26BF3 X-CRM114-Status: GOOD ( 17.20 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.126.144.131 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: devicetree-discuss@lists.ozlabs.org, Linus Walleij , Arnd Bergmann X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Linus Walleij This converts the last of the U300 clocks to being probed from the device tree. Cc: Mike Turquette Signed-off-by: Linus Walleij Acked-by: Mike Turquette --- Hi Mike, I'm seeking an ACK on this to take it through the ARM SoC tree. --- .../bindings/clock/ste-u300-syscon-clock.txt | 23 ++++++++++++++++++++++ arch/arm/boot/dts/ste-u300.dts | 9 +++++++-- drivers/clk/clk-u300.c | 22 ++++++++++++++++----- 3 files changed, 47 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/ste-u300-syscon-clock.txt b/Documentation/devicetree/bindings/clock/ste-u300-syscon-clock.txt index b6a30f5..7cafcb9 100644 --- a/Documentation/devicetree/bindings/clock/ste-u300-syscon-clock.txt +++ b/Documentation/devicetree/bindings/clock/ste-u300-syscon-clock.txt @@ -55,3 +55,26 @@ gpio: gpio@c0016000 { (...) clocks = <&gpio_clk>; }; + + +Bindings for the MMC/SD card clock: + +Required properties: +- compatible: must be "stericsson,u300-syscon-mclk" +- #clock-cells: must be <0> + +Optional properties: +- clocks: parent clock(s) + +mmc_mclk: mmc_mclk { + #clock-cells = <0>; + compatible = "stericsson,u300-syscon-mclk"; + clocks = <&mmc_pclk>; +}; + +mmcsd: mmcsd@c0001000 { + compatible = "arm,pl18x", "arm,primecell"; + clocks = <&mmc_pclk>, <&mmc_mclk>; + clock-names = "apb_pclk", "mclk"; + (...) +}; diff --git a/arch/arm/boot/dts/ste-u300.dts b/arch/arm/boot/dts/ste-u300.dts index e83aafc..d5dd243 100644 --- a/arch/arm/boot/dts/ste-u300.dts +++ b/arch/arm/boot/dts/ste-u300.dts @@ -205,6 +205,11 @@ clock-id = <5>; clocks = <&fast_clk>; }; + mmc_mclk: mmc_mclk { + #clock-cells = <0>; + compatible = "stericsson,u300-syscon-mclk"; + clocks = <&mmc_pclk>; + }; spi_clk: spi_p_clk@26M { #clock-cells = <0>; compatible = "stericsson,u300-syscon-clk"; @@ -433,8 +438,8 @@ reg = <0xc0001000 0x1000>; interrupt-parent = <&vicb>; interrupts = <6 7>; - clocks = <&mmc_pclk>; - clock-names = "apb_pclk"; + clocks = <&mmc_pclk>, <&mmc_mclk>; + clock-names = "apb_pclk", "mclk"; max-frequency = <24000000>; bus-width = <4>; // SD-card slot mmc-cap-mmc-highspeed; diff --git a/drivers/clk/clk-u300.c b/drivers/clk/clk-u300.c index 5f234d3..8774e05 100644 --- a/drivers/clk/clk-u300.c +++ b/drivers/clk/clk-u300.c @@ -1139,6 +1139,18 @@ mclk_clk_register(struct device *dev, const char *name, return clk; } +static void __init of_u300_syscon_mclk_init(struct device_node *np) +{ + struct clk *clk = ERR_PTR(-EINVAL); + const char *clk_name = np->name; + const char *parent_name; + + parent_name = of_clk_get_parent_name(np, 0); + clk = mclk_clk_register(NULL, clk_name, parent_name, false); + if (!IS_ERR(clk)) + of_clk_add_provider(np, of_clk_src_simple_get, clk); +} + static const __initconst struct of_device_id u300_clk_match[] = { { .compatible = "fixed-clock", @@ -1152,12 +1164,16 @@ static const __initconst struct of_device_id u300_clk_match[] = { .compatible = "stericsson,u300-syscon-clk", .data = of_u300_syscon_clk_init, }, + { + .compatible = "stericsson,u300-syscon-mclk", + .data = of_u300_syscon_mclk_init, + }, }; + void __init u300_clk_init(void __iomem *base) { u16 val; - struct clk *clk; syscon_vbase = base; @@ -1175,8 +1191,4 @@ void __init u300_clk_init(void __iomem *base) writew(val, syscon_vbase + U300_SYSCON_PMCR); of_clk_init(u300_clk_match); - - /* Then this special MMC/SD clock */ - clk = mclk_clk_register(NULL, "mmc_clk", "mmc_p_clk", false); - clk_register_clkdev(clk, NULL, "mmci"); }