From patchwork Mon Jul 12 06:09:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 475684 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, 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 7B8A8C11F67 for ; Mon, 12 Jul 2021 07:20:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5FDF1613AB for ; Mon, 12 Jul 2021 07:20:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241497AbhGLHW7 (ORCPT ); Mon, 12 Jul 2021 03:22:59 -0400 Received: from mail.kernel.org ([198.145.29.99]:57896 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245709AbhGLHTs (ORCPT ); Mon, 12 Jul 2021 03:19:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C4E4260FF1; Mon, 12 Jul 2021 07:16:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626074220; bh=ZivRLk3vTNtAwKZL3S42TJm2A9EcTEfHPTEK+8QwizA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kmr0GDiSxRY3x0rg3ZteuIRuAFbtSDvmk1uTp5z+zzQUkxJgpJUigEpuFZAmY/Qo9 ptH5g7h2NH2Q27F1SlRMipSPZe6O7si1CoBDMhyjLC07ZM7wLiYAS3O7HT39CfKaxN 6sog2Xqoue6i/+FZyEwUGmNjJ35g8dIb4QyLfdKQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Cristian Ciocaltea , Manivannan Sadhasivam , Stephen Boyd , Sasha Levin Subject: [PATCH 5.12 505/700] clk: actions: Fix AHPPREDIV-H-AHB clock chain on Owl S500 SoC Date: Mon, 12 Jul 2021 08:09:48 +0200 Message-Id: <20210712061030.227880294@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060924.797321836@linuxfoundation.org> References: <20210712060924.797321836@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Cristian Ciocaltea [ Upstream commit fd90b5b9045274360b12cea0f2ce50f3bcfb25cc ] There are a few issues with the setup of the Actions Semi Owl S500 SoC's clock chain involving AHPPREDIV, H and AHB clocks: * AHBPREDIV clock is defined as a muxer only, although it also acts as a divider. * H clock is using a wrong divider register offset * AHB is defined as a multi-rate factor clock, but it is actually just a fixed pass clock. Let's provide the following fixes: * Change AHBPREDIV clock to an ungated OWL_COMP_DIV definition. * Use the correct register shift value in the OWL_DIVIDER definition for H clock * Drop the unneeded 'ahb_factor_table[]' and change AHB clock to an ungated OWL_COMP_FIXED_FACTOR definition. Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC") Signed-off-by: Cristian Ciocaltea Link: https://lore.kernel.org/r/21c1abd19a7089b65a34852ac6513961be88cbe1.1623354574.git.cristian.ciocaltea@gmail.com Reviewed-by: Manivannan Sadhasivam Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/actions/owl-s500.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/clk/actions/owl-s500.c b/drivers/clk/actions/owl-s500.c index 42d6899755e6..cbeb51c804eb 100644 --- a/drivers/clk/actions/owl-s500.c +++ b/drivers/clk/actions/owl-s500.c @@ -153,11 +153,6 @@ static struct clk_factor_table hde_factor_table[] = { { 0, 0, 0 }, }; -static struct clk_factor_table ahb_factor_table[] = { - { 1, 1, 2 }, { 2, 1, 3 }, - { 0, 0, 0 }, -}; - static struct clk_div_table rmii_ref_div_table[] = { { 0, 4 }, { 1, 10 }, { 0, 0 }, @@ -186,7 +181,6 @@ static struct clk_div_table nand_div_table[] = { /* mux clock */ static OWL_MUX(dev_clk, "dev_clk", dev_clk_mux_p, CMU_DEVPLL, 12, 1, CLK_SET_RATE_PARENT); -static OWL_MUX(ahbprediv_clk, "ahbprediv_clk", ahbprediv_clk_mux_p, CMU_BUSCLK1, 8, 3, CLK_SET_RATE_PARENT); /* gate clocks */ static OWL_GATE(gpio_clk, "gpio_clk", "apb_clk", CMU_DEVCLKEN0, 18, 0, 0); @@ -199,16 +193,25 @@ static OWL_GATE(timer_clk, "timer_clk", "hosc", CMU_DEVCLKEN1, 27, 0, 0); static OWL_GATE(hdmi_clk, "hdmi_clk", "hosc", CMU_DEVCLKEN1, 3, 0, 0); /* divider clocks */ -static OWL_DIVIDER(h_clk, "h_clk", "ahbprediv_clk", CMU_BUSCLK1, 12, 2, NULL, 0, 0); +static OWL_DIVIDER(h_clk, "h_clk", "ahbprediv_clk", CMU_BUSCLK1, 2, 2, NULL, 0, 0); static OWL_DIVIDER(apb_clk, "apb_clk", "ahb_clk", CMU_BUSCLK1, 14, 2, NULL, 0, 0); static OWL_DIVIDER(rmii_ref_clk, "rmii_ref_clk", "ethernet_pll_clk", CMU_ETHERNETPLL, 1, 1, rmii_ref_div_table, 0, 0); /* factor clocks */ -static OWL_FACTOR(ahb_clk, "ahb_clk", "h_clk", CMU_BUSCLK1, 2, 2, ahb_factor_table, 0, 0); static OWL_FACTOR(de1_clk, "de_clk1", "de_clk", CMU_DECLK, 0, 4, de_factor_table, 0, 0); static OWL_FACTOR(de2_clk, "de_clk2", "de_clk", CMU_DECLK, 4, 4, de_factor_table, 0, 0); /* composite clocks */ +static OWL_COMP_DIV(ahbprediv_clk, "ahbprediv_clk", ahbprediv_clk_mux_p, + OWL_MUX_HW(CMU_BUSCLK1, 8, 3), + { 0 }, + OWL_DIVIDER_HW(CMU_BUSCLK1, 12, 2, 0, NULL), + CLK_SET_RATE_PARENT); + +static OWL_COMP_FIXED_FACTOR(ahb_clk, "ahb_clk", "h_clk", + { 0 }, + 1, 1, 0); + static OWL_COMP_FACTOR(vce_clk, "vce_clk", hde_clk_mux_p, OWL_MUX_HW(CMU_VCECLK, 4, 2), OWL_GATE_HW(CMU_DEVCLKEN0, 26, 0),