From patchwork Mon Dec 21 15:06:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Tretter X-Patchwork-Id: 11984725 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26A1BC433E0 for ; Mon, 21 Dec 2020 15:08:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CDFBA22BEA for ; Mon, 21 Dec 2020 15:08:27 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDFBA22BEA Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rrGmO1mBA0Wb88ivNS45afg++2vdyP9eV8n53C5eogM=; b=2SEkH/+bIGQ3MNncVkZ21qv8j 410ohO8Fvj2Yh9GHQyK3ZGKaIICXJjgGgjVbwdJvuXnJl8TYhR7OeC8P7AbOtydoiEow5WX39fQxT 5dRiMHUt8+4X4rXtG7SSoEpXFdqcSm77US9vAtpVJcayeeDmoKzmcxdLuoBEmUybkJ/GjxsZ1ewej o4fBwiDE/prL5DN1jGmJVZIgFOJ4d8LK0gsBlFlEAXEynXktbJ9zwH6fIEHhu64yLOAcNkZ6dqkaj bIsxjq/j7QZOCrXVxyAcV47C5zuVKkzDxfJDk9mJL93XxjoQogzqSmef01VI0H3j51aulFYazqnMq 9Fa0552vg==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1krMm8-0008Qf-1B; Mon, 21 Dec 2020 15:07:04 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1krMli-0008HI-Mp for linux-arm-kernel@lists.infradead.org; Mon, 21 Dec 2020 15:06:41 +0000 Received: from [2a0a:edc0:0:1101:1d::39] (helo=dude03.red.stw.pengutronix.de) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1krMlg-0007Vq-AD; Mon, 21 Dec 2020 16:06:36 +0100 Received: from mtr by dude03.red.stw.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1krMle-003AbI-Qx; Mon, 21 Dec 2020 16:06:34 +0100 From: Michael Tretter To: linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Subject: [PATCH v2 07/15] soc: xilinx: vcu: register PLL as fixed rate clock Date: Mon, 21 Dec 2020 16:06:26 +0100 Message-Id: <20201221150634.755673-8-m.tretter@pengutronix.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201221150634.755673-1-m.tretter@pengutronix.de> References: <20201221150634.755673-1-m.tretter@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::39 X-SA-Exim-Mail-From: mtr@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201221_100639_325368_5AFA5F22 X-CRM114-Status: GOOD ( 18.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dshah@xilinx.com, tejasp@xilinx.com, sboyd@kernel.org, mturquette@baylibre.com, rajanv@xilinx.com, michals@xilinx.com, kernel@pengutronix.de, rvisaval@xilinx.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently, xvcu_pll_set_rate configures the PLL to a clock rate that is pre-calculated when probing the driver. To still make the clock framework aware of the PLL and to allow to configure other clocks based on the PLL rate, register the PLL as a fixed rate clock. Signed-off-by: Michael Tretter --- Changelog: v2: - Fix kernel-doc of struct xvcu_device - Add missing clk_hw_unregister_fixed_rate --- drivers/soc/xilinx/Kconfig | 2 +- drivers/soc/xilinx/xlnx_vcu.c | 19 ++++++++++++++++++- 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/soc/xilinx/Kconfig b/drivers/soc/xilinx/Kconfig index 0b1708dae361..9fe703772e5a 100644 --- a/drivers/soc/xilinx/Kconfig +++ b/drivers/soc/xilinx/Kconfig @@ -3,7 +3,7 @@ menu "Xilinx SoC drivers" config XILINX_VCU tristate "Xilinx VCU logicoreIP Init" - depends on HAS_IOMEM + depends on HAS_IOMEM && COMMON_CLK select REGMAP_MMIO help Provides the driver to enable and disable the isolation between the diff --git a/drivers/soc/xilinx/xlnx_vcu.c b/drivers/soc/xilinx/xlnx_vcu.c index 34f3299afc0d..6a733a181982 100644 --- a/drivers/soc/xilinx/xlnx_vcu.c +++ b/drivers/soc/xilinx/xlnx_vcu.c @@ -7,6 +7,7 @@ * Contacts Dhaval Shah */ #include +#include #include #include #include @@ -73,6 +74,7 @@ * @aclk: axi clock source * @logicore_reg_ba: logicore reg base address * @vcu_slcr_ba: vcu_slcr Register base address + * @pll: handle for the VCU PLL */ struct xvcu_device { struct device *dev; @@ -80,6 +82,7 @@ struct xvcu_device { struct clk *aclk; struct regmap *logicore_reg_ba; void __iomem *vcu_slcr_ba; + struct clk_hw *pll; }; static struct regmap_config vcu_settings_regmap_config = { @@ -403,7 +406,9 @@ static int xvcu_set_vcu_pll_info(struct xvcu_device *xvcu) u32 clkoutdiv, vcu_pll_ctrl, pll_clk; u32 mod, ctrl; int i; + int ret; const struct xvcu_pll_cfg *found = NULL; + struct clk_hw *hw; regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK, &inte); regmap_read(xvcu->logicore_reg_ba, VCU_PLL_CLK_DEC, &deci); @@ -505,7 +510,18 @@ static int xvcu_set_vcu_pll_info(struct xvcu_device *xvcu) ctrl |= (VCU_SRCSEL_PLL & VCU_SRCSEL_MASK) << VCU_SRCSEL_SHIFT; xvcu_write(xvcu->vcu_slcr_ba, VCU_DEC_MCU_CTRL, ctrl); - return xvcu_pll_set_rate(xvcu, fvco, refclk); + ret = xvcu_pll_set_rate(xvcu, fvco, refclk); + if (ret) + return ret; + + hw = clk_hw_register_fixed_rate(xvcu->dev, "vcu_pll", + __clk_get_name(xvcu->pll_ref), + 0, pll_clk); + if (IS_ERR(hw)) + return PTR_ERR(hw); + xvcu->pll = hw; + + return 0; } /** @@ -652,6 +668,7 @@ static int xvcu_remove(struct platform_device *pdev) /* Add the the Gasket isolation and put the VCU in reset. */ regmap_write(xvcu->logicore_reg_ba, VCU_GASKET_INIT, 0); + clk_hw_unregister_fixed_rate(xvcu->pll); xvcu_pll_disable(xvcu); clk_disable_unprepare(xvcu->aclk);