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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 958DDC433E0 for ; Sat, 8 Aug 2020 23:36:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7317B206D8 for ; Sat, 8 Aug 2020 23:36:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596929781; bh=5FS1bRYbhh3iZG9BJtPW8I/Q7cLQiRbWaIwY811DndM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=heF7YB4fyW49+WTk4bXFiHIkCkoAN+2JQpbTCwdB8bET7QkYbDjGDo7HF18iJsA6t d3W8kfxax4ktE8F85rhrwUiF7DDvyFGjTZS/mGjfQCYaGJTOft11e3s9y6pZcKSdyl /ZGfXa0uzZb2a66FD7Rj8+cGAw6Zn5WsUdvSxo/E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726817AbgHHXgT (ORCPT ); Sat, 8 Aug 2020 19:36:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:48660 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726798AbgHHXgS (ORCPT ); Sat, 8 Aug 2020 19:36:18 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 69B7920716; Sat, 8 Aug 2020 23:36:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596929778; bh=5FS1bRYbhh3iZG9BJtPW8I/Q7cLQiRbWaIwY811DndM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cefXIEo0DVWHUp76r2okkzVKDnF5Emet+xGoImO7y5WqCWF3W+NefB3297jQl+2cA SbDTV9yRlZLDMGKfRXBviq86iQIkqektuCn6X+wp+jSx89zcCHkJtkRDTMKtxC0MGO Hsoy8aona2N/Qpw8Ad+pxmoTnoaigRdKSyyaSYzA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Sudeep Holla , Stephen Boyd , Dien Pham , Sasha Levin , linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org Subject: [PATCH AUTOSEL 5.8 27/72] clk: scmi: Fix min and max rate when registering clocks with discrete rates Date: Sat, 8 Aug 2020 19:34:56 -0400 Message-Id: <20200808233542.3617339-27-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200808233542.3617339-1-sashal@kernel.org> References: <20200808233542.3617339-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sudeep Holla [ Upstream commit fcd2e0deae50bce48450f14c8fc5611b08d7438c ] Currently we are not initializing the scmi clock with discrete rates correctly. We fetch the min_rate and max_rate value only for clocks with ranges and ignore the ones with discrete rates. This will lead to wrong initialization of rate range when clock supports discrete rate. Fix this by using the first and the last rate in the sorted list of the discrete clock rates while registering the clock. Link: https://lore.kernel.org/r/20200709081705.46084-2-sudeep.holla@arm.com Fixes: 6d6a1d82eaef7 ("clk: add support for clocks provided by SCMI") Reviewed-by: Stephen Boyd Reported-and-tested-by: Dien Pham Signed-off-by: Sudeep Holla Signed-off-by: Sasha Levin --- drivers/clk/clk-scmi.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk-scmi.c b/drivers/clk/clk-scmi.c index c491f5de0f3f4..c754dfbb73fd4 100644 --- a/drivers/clk/clk-scmi.c +++ b/drivers/clk/clk-scmi.c @@ -103,6 +103,8 @@ static const struct clk_ops scmi_clk_ops = { static int scmi_clk_ops_init(struct device *dev, struct scmi_clk *sclk) { int ret; + unsigned long min_rate, max_rate; + struct clk_init_data init = { .flags = CLK_GET_RATE_NOCACHE, .num_parents = 0, @@ -112,9 +114,23 @@ static int scmi_clk_ops_init(struct device *dev, struct scmi_clk *sclk) sclk->hw.init = &init; ret = devm_clk_hw_register(dev, &sclk->hw); - if (!ret) - clk_hw_set_rate_range(&sclk->hw, sclk->info->range.min_rate, - sclk->info->range.max_rate); + if (ret) + return ret; + + if (sclk->info->rate_discrete) { + int num_rates = sclk->info->list.num_rates; + + if (num_rates <= 0) + return -EINVAL; + + min_rate = sclk->info->list.rates[0]; + max_rate = sclk->info->list.rates[num_rates - 1]; + } else { + min_rate = sclk->info->range.min_rate; + max_rate = sclk->info->range.max_rate; + } + + clk_hw_set_rate_range(&sclk->hw, min_rate, max_rate); return ret; } -- 2.25.1