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=-16.4 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 CB826C48BD1 for ; Fri, 11 Jun 2021 08:47:26 +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 2C8AC613C3 for ; Fri, 11 Jun 2021 08:47:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2C8AC613C3 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 6AA6080EC8; Fri, 11 Jun 2021 10:46:16 +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="N3iVRtvL"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 42BFD801E8; Fri, 11 Jun 2021 10:45:53 +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 EDCD5801D7 for ; Fri, 11 Jun 2021 10:45:49 +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 B1607613C3; Fri, 11 Jun 2021 08:45:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1623401148; bh=pqv5xYB9M8+ELuiYSh3Nu2jeL8j6h/EVgdTR/OOVv+o=; h=From:To:Subject:Date:In-Reply-To:References:From; b=N3iVRtvLahjGKuW9TMGvdeosrr6M0tujhNsa2rqp5ZI/SetozSIL5JgvpyhzCUl8a rtdwDC1zfBwE5Fap9/INxGMTLWc+nLGOHCXpQNRI1M3y+49gugJtZymZv5WsTPUjbg n3P1a/Gpk5mg0qwIdfE/UZsqdZMOXqBQFk0GObutrxRxgBxxW+BVfFcW/2l5d1Y1G8 ZIMEjEFcmhDDV6ox0hXHlNUqMUQZLMu242bOQA6R39RhljHkKL02mNtx4TfcFE7Qi7 udCiSGAldGoKsR2HqJDEnbY0XZOjsD+A9vTUNWurafZXMSPKZc7t3DlQPjJLEXs+UD +g0vMECzT97ew== From: Tero Kristo To: lokeshvutla@ti.com, trini@konsulko.com, u-boot@lists.denx.de Subject: [PATCHv6 08/26] clk: add support for setting clk rate from cmdline Date: Fri, 11 Jun 2021 11:45:09 +0300 Message-Id: <20210611084527.7048-9-kristo@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210611084527.7048-1-kristo@kernel.org> References: <20210611084527.7048-1-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 0.103.2 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 | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 51 insertions(+), 2 deletions(-) diff --git a/cmd/clk.c b/cmd/clk.c index 0245b97136..7ece2454e0 100644 --- a/cmd/clk.c +++ b/cmd/clk.c @@ -98,8 +98,56 @@ static int do_clk_dump(struct cmd_tbl *cmdtp, int flag, int argc, return ret; } +#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK) +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; +} +#endif + static struct cmd_tbl cmd_clk_sub[] = { U_BOOT_CMD_MKENT(dump, 1, 1, do_clk_dump, "", ""), +#if CONFIG_IS_ENABLED(DM) && CONFIG_IS_ENABLED(CLK) + U_BOOT_CMD_MKENT(setfreq, 3, 1, do_clk_setfreq, "", ""), +#endif }; static int do_clk(struct cmd_tbl *cmdtp, int flag, int argc, @@ -124,7 +172,8 @@ 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