From patchwork Mon Jul 12 06:09:47 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: 473891 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 C0455C11F6D for ; Mon, 12 Jul 2021 07:20:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A29E061375 for ; Mon, 12 Jul 2021 07:20:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242674AbhGLHW5 (ORCPT ); Mon, 12 Jul 2021 03:22:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:57842 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245647AbhGLHTn (ORCPT ); Mon, 12 Jul 2021 03:19:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id AB58160FF1; Mon, 12 Jul 2021 07:16:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626074214; bh=pXn31TkCyFWQq5xPePd9IsCjXV2Uf7TMp52YGIPBvuE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Pr3CXFue481F1DuSTAffECKFLxxtZEeKDA36u1COBfH+0lZoOzg/KLyau4DzqO11h 3saIhJZWWxX2CnHLt3kGmD0U2z2kJ8i1SGZ24lKvkCUigeHAVX0kLJPjGTqgAqc8vg BKEg5xC+J25mFMF1etchfzqBxfZzTQnOitoFPMrY= 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 5.12 504/700] clk: actions: Fix bisp_factor_table based clocks on Owl S500 SoC Date: Mon, 12 Jul 2021 08:09:47 +0200 Message-Id: <20210712061030.116594401@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 a8f1f03caa51aa7a69c671aa87c475034db7d368 ] The following clocks of the Actions Semi Owl S500 SoC have been defined to use a shared clock factor table 'bisp_factor_table[]': DE[1-2], VCE, VDE, BISP, SENSOR[0-1] There are several issues involved in this approach: * 'bisp_factor_table[]' describes the configuration of a regular 8-rates divider, so its usage is redundant. Additionally, judging by the BISP clock context, it is incomplete since it maps only 8 out of 12 possible entries. * The clocks mentioned above are not identical in terms of the available rates, therefore cannot rely on the same factor table. Specifically, BISP and SENSOR* are standard 12-rate dividers so their configuration should rely on a proper clock div table, while VCE and VDE require a factor table that is a actually a subset of the one needed for DE[1-2] clocks. Let's fix this by implementing the following: * Add new factor tables 'de_factor_table' and 'hde_factor_table' to properly handle DE[1-2], VCE and VDE clocks. * Add a common div table 'std12rate_div_table' for BISP and SENSOR[0-1] clocks converted to OWL_COMP_DIV. * Drop the now unused 'bisp_factor_table[]'. Additionally, drop the CLK_IGNORE_UNUSED flag for SENSOR[0-1] since there is no reason to always keep ON those clocks. Fixes: ed6b4795ece4 ("clk: actions: Add clock driver for S500 SoC") Signed-off-by: Cristian Ciocaltea Reviewed-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/e675820a46cd9930d8d576c6cae61d41c1a8416f.1623354574.git.cristian.ciocaltea@gmail.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/actions/owl-s500.c | 44 ++++++++++++++++++++++------------ 1 file changed, 29 insertions(+), 15 deletions(-) diff --git a/drivers/clk/actions/owl-s500.c b/drivers/clk/actions/owl-s500.c index 42abdf964044..42d6899755e6 100644 --- a/drivers/clk/actions/owl-s500.c +++ b/drivers/clk/actions/owl-s500.c @@ -140,9 +140,16 @@ static struct clk_factor_table sd_factor_table[] = { { 0, 0, 0 }, }; -static struct clk_factor_table bisp_factor_table[] = { - { 0, 1, 1 }, { 1, 1, 2 }, { 2, 1, 3 }, { 3, 1, 4 }, - { 4, 1, 5 }, { 5, 1, 6 }, { 6, 1, 7 }, { 7, 1, 8 }, +static struct clk_factor_table de_factor_table[] = { + { 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 2, 5 }, + { 4, 1, 3 }, { 5, 1, 4 }, { 6, 1, 6 }, { 7, 1, 8 }, + { 8, 1, 12 }, + { 0, 0, 0 }, +}; + +static struct clk_factor_table hde_factor_table[] = { + { 0, 1, 1 }, { 1, 2, 3 }, { 2, 1, 2 }, { 3, 2, 5 }, + { 4, 1, 3 }, { 5, 1, 4 }, { 6, 1, 6 }, { 7, 1, 8 }, { 0, 0, 0 }, }; @@ -156,6 +163,13 @@ static struct clk_div_table rmii_ref_div_table[] = { { 0, 0 }, }; +static struct clk_div_table std12rate_div_table[] = { + { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, + { 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 8 }, + { 8, 9 }, { 9, 10 }, { 10, 11 }, { 11, 12 }, + { 0, 0 }, +}; + static struct clk_div_table i2s_div_table[] = { { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, { 4, 6 }, { 5, 8 }, { 6, 12 }, { 7, 16 }, @@ -191,39 +205,39 @@ static OWL_DIVIDER(rmii_ref_clk, "rmii_ref_clk", "ethernet_pll_clk", CMU_ETHERNE /* 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, 3, bisp_factor_table, 0, 0); -static OWL_FACTOR(de2_clk, "de_clk2", "de_clk", CMU_DECLK, 4, 3, bisp_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_FACTOR(vce_clk, "vce_clk", hde_clk_mux_p, OWL_MUX_HW(CMU_VCECLK, 4, 2), OWL_GATE_HW(CMU_DEVCLKEN0, 26, 0), - OWL_FACTOR_HW(CMU_VCECLK, 0, 3, 0, bisp_factor_table), + OWL_FACTOR_HW(CMU_VCECLK, 0, 3, 0, hde_factor_table), 0); static OWL_COMP_FACTOR(vde_clk, "vde_clk", hde_clk_mux_p, OWL_MUX_HW(CMU_VDECLK, 4, 2), OWL_GATE_HW(CMU_DEVCLKEN0, 25, 0), - OWL_FACTOR_HW(CMU_VDECLK, 0, 3, 0, bisp_factor_table), + OWL_FACTOR_HW(CMU_VDECLK, 0, 3, 0, hde_factor_table), 0); -static OWL_COMP_FACTOR(bisp_clk, "bisp_clk", bisp_clk_mux_p, +static OWL_COMP_DIV(bisp_clk, "bisp_clk", bisp_clk_mux_p, OWL_MUX_HW(CMU_BISPCLK, 4, 1), OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0), - OWL_FACTOR_HW(CMU_BISPCLK, 0, 3, 0, bisp_factor_table), + OWL_DIVIDER_HW(CMU_BISPCLK, 0, 4, 0, std12rate_div_table), 0); -static OWL_COMP_FACTOR(sensor0_clk, "sensor0_clk", sensor_clk_mux_p, +static OWL_COMP_DIV(sensor0_clk, "sensor0_clk", sensor_clk_mux_p, OWL_MUX_HW(CMU_SENSORCLK, 4, 1), OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0), - OWL_FACTOR_HW(CMU_SENSORCLK, 0, 3, 0, bisp_factor_table), - CLK_IGNORE_UNUSED); + OWL_DIVIDER_HW(CMU_SENSORCLK, 0, 4, 0, std12rate_div_table), + 0); -static OWL_COMP_FACTOR(sensor1_clk, "sensor1_clk", sensor_clk_mux_p, +static OWL_COMP_DIV(sensor1_clk, "sensor1_clk", sensor_clk_mux_p, OWL_MUX_HW(CMU_SENSORCLK, 4, 1), OWL_GATE_HW(CMU_DEVCLKEN0, 14, 0), - OWL_FACTOR_HW(CMU_SENSORCLK, 8, 3, 0, bisp_factor_table), - CLK_IGNORE_UNUSED); + OWL_DIVIDER_HW(CMU_SENSORCLK, 8, 4, 0, std12rate_div_table), + 0); static OWL_COMP_FACTOR(sd0_clk, "sd0_clk", sd_clk_mux_p, OWL_MUX_HW(CMU_SD0CLK, 9, 1),