From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, USER_AGENT_GIT autolearn=ham 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 4DAC1C47096 for ; Thu, 3 Jun 2021 06:34:49 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C69EB61263 for ; Thu, 3 Jun 2021 06:34:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C69EB61263 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 6A93E82F9B; Thu, 3 Jun 2021 08:33:36 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="W7o5hRTs"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 6BA4E82F98; Thu, 3 Jun 2021 08:33:21 +0200 (CEST) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 17D3C82F88 for ; Thu, 3 Jun 2021 08:33:18 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=kristo@kernel.org Received: by mail.kernel.org (Postfix) with ESMTPSA id F212F613DC; Thu, 3 Jun 2021 06:33:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622701996; bh=pog305gu/V/AuPR8qHSAOQPIKQkWwnJuD3/j+Bsr+os=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W7o5hRTsJ1dxgkgSJ+NmQAaRbo5eCOnuTy7R9PF0LXX250sVZXkQWekdiV3Y5ucEC oNOwD9BBhGm9dimincc4BJyMCYrE4UksW17Y2FE1r6pj3+GEd6rHPnMKsTH1lwbF9B ujTz7ZaTW1qV8e8V9l5G6kpcApdLA3vk7dPAYxaIBMFrSvJXXUcSGBtV/NPdrYI1qr eUZF/G3ct7BRh4vNTtNwNzcrwo8FV9nN/G7Vw0x6RIloBRBiR3wo0df8/Q8iZLYJUT Fg9dTRroaJr8UE76SM/qiynLSmUo9o19s+XH3WZX8lHuVadMJc0/RIdPe31lih84sz o96Bm77v/s9dQ== From: Tero Kristo To: u-boot@lists.denx.de, lokeshvutla@ti.com Cc: trini@konsulko.com Subject: [PATCHv5 08/26] clk: add support for setting clk rate from cmdline Date: Thu, 3 Jun 2021 09:32:37 +0300 Message-Id: <20210603063255.5483-9-kristo@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210603063255.5483-1-kristo@kernel.org> References: <20210603063255.5483-1-kristo@kernel.org> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.4 at phobos.denx.de X-Virus-Status: Clean From: Tero Kristo Add new clk subcommand "clk setfreq", for setting up a clock rate directly from u-boot cmdline. This is handy for any debugging purposes towards clocks. Acked-by: Lukasz Majewski Signed-off-by: Tero Kristo Signed-off-by: Tero Kristo --- cmd/clk.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 47 insertions(+), 2 deletions(-) diff --git a/cmd/clk.c b/cmd/clk.c index 0245b97136..fd7944c02e 100644 --- a/cmd/clk.c +++ b/cmd/clk.c @@ -98,8 +98,52 @@ static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc, return ret; } +struct udevice *clk_lookup(const char *name) +{ + int i = 0; + struct udevice *dev; + + do { + uclass_get_device(UCLASS_CLK, i++, &dev); + if (!strcmp(name, dev->name)) + return dev; + } while (dev); + + return NULL; +} + +static int do_clk_setfreq(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct clk *clk = NULL; + s32 freq; + struct udevice *dev; + + freq = simple_strtoul(argv[2], NULL, 10); + + dev = clk_lookup(argv[1]); + + if (dev) + clk = dev_get_clk_ptr(dev); + + if (!clk) { + printf("clock '%s' not found.\n", argv[1]); + return -EINVAL; + } + + freq = clk_set_rate(clk, freq); + if (freq < 0) { + printf("set_rate failed: %d\n", freq); + return CMD_RET_FAILURE; + } + + printf("set_rate returns %u\n", freq); + return 0; +} + static struct cmd_tbl cmd_clk_sub[] = { U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""), + U_BOOT_CMD_MKENT(setfreq, 3, 1, do_clk_setfreq, "", ""), }; static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc, @@ -124,7 +168,8 @@ static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc, #ifdef CONFIG_SYS_LONGHELP static char clk_help_text[] = - "dump - Print clock frequencies"; + "dump - Print clock frequencies\n" + "setfreq [clk] [freq] - Set clock frequency"; #endif -U_BOOT_CMD(clk, 2, 1, do_clk, "CLK sub-system", clk_help_text); +U_BOOT_CMD(clk, 4, 1, do_clk, "CLK sub-system", clk_help_text); -- 2.17.1