From patchwork Wed May 31 22:26:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 13262780 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 90170C77B73 for ; Wed, 31 May 2023 22:28:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229755AbjEaW2o (ORCPT ); Wed, 31 May 2023 18:28:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229706AbjEaW2n (ORCPT ); Wed, 31 May 2023 18:28:43 -0400 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C35F1B7; Wed, 31 May 2023 15:28:04 -0700 (PDT) Received: by mail-wm1-x333.google.com with SMTP id 5b1f17b1804b1-3f61530506aso1972845e9.1; Wed, 31 May 2023 15:28:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685572083; x=1688164083; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=/ZrH6+6IbeVshYJ6pXjPVvHFDvO94wadeWCs5fY2QiA=; b=H4CSI83crZfYh6Jo3K7um1xH/c5908hKfqW328aMr5819CvyXz7KO2v2So9VMW93My Do3WjGcQkfRdDbKyuuh5xlbP5HTGVFsI7ujv0O3cZHSZ7kBxgf5NlMODEGxCagbC0U8F XodN8lsZtiDukaQ3YBYP+G1XTfaTyd2AVPaycM/7PvufRV2rPP2NDewzWRhSnXFoOunx g96H1azM6jHn9ewhwe0PhfDc+eGLKtRkXcTPeLwjp/7bJSRHOpp8NgLcyVbF30IyR9Ta pKX0BRzcb5nmm76dBe1ttdqq5FzQZTbliZJyNDrRKJmGAnGid7/BqmqUBGJHnQf9uPuJ afyA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685572083; x=1688164083; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/ZrH6+6IbeVshYJ6pXjPVvHFDvO94wadeWCs5fY2QiA=; b=CpUZoOVhWbjFiUQw9EPKDPNd4fazTA2+mUUP729ohnhEfFoM3AHGHpfCWqfQVKBQPu zZxahCgkMIWpIi7fJLp55S1cnbW3L3sCVm7YB7KDY46B7bTaJxH4/MRkTt1834sMlYaC QxatncyrzCbVqPtncS/RnC976QeG1kcswfyp18g+woWU6MrwLhWMw7HpBMgFKEdeKOno nkwUPJoygRqkDlcev1b+QFNsrn3yGmCy6/RjqwJYupt4mec6hWVnvj++5xTOJElnInfT dtS6UPHNMlpcNzGxgK4sdv/bl65WS82TIjDIyXWx+fXrAzSXm7qVpz5oy7nLn462cMRp IopQ== X-Gm-Message-State: AC+VfDw0Q12BV9b3bRdi8UxID+idFtrAVh0GUbGAxIkZyI0qr8+ThmKf 2s+m9kxwuFiOiotNsy89I50= X-Google-Smtp-Source: ACHHUZ4u3vb9tLYQqfnHtb98Q7pYBnUwLjiBTds/e+ZzRA5HEXqgheByPQDYF9xErLygKLzx5+4qrA== X-Received: by 2002:a1c:7905:0:b0:3f6:1bb:1dce with SMTP id l5-20020a1c7905000000b003f601bb1dcemr642113wme.13.1685572082701; Wed, 31 May 2023 15:28:02 -0700 (PDT) Received: from localhost.localdomain (93-34-93-173.ip49.fastwebnet.it. [93.34.93.173]) by smtp.googlemail.com with ESMTPSA id 9-20020a05600c028900b003f6132f95e6sm70020wmk.35.2023.05.31.15.27.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 15:27:42 -0700 (PDT) From: Christian Marangi To: Bjorn Andersson , Andy Gross , Konrad Dybcio , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christian Marangi Subject: [PATCH v5 1/3] clk: qcom: clk-rcg: introduce support for multiple conf for same freq Date: Thu, 1 Jun 2023 00:26:52 +0200 Message-Id: <20230531222654.25475-2-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230531222654.25475-1-ansuelsmth@gmail.com> References: <20230531222654.25475-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Some RCG frequency can be reached by multiple configuration. We currently declare multiple configuration for the same frequency but that is not supported and always the first configuration will be taken. These multiple configuration are needed as based on the current parent configuration, it may be needed to use a different configuration to reach the same frequency. To handle this introduce 3 new macro, C, FM and FMS: - C is used to declare a freq_conf where src, pre_div, m and n are provided. - FM is used to declare a freq_multi_tbl with the frequency and an array of confs to insert all the config for the provided frequency. - FMS is used to declare a freq_multi_tbl with the frequency and an array of a single conf with the provided src, pre_div, m and n. Struct clk_rcg2 is changed to add a union type to reference a simple freq_tbl or a complex freq_multi_tbl. Signed-off-by: Christian Marangi --- drivers/clk/qcom/clk-rcg.h | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h index 01581f4d2c39..dc85b46b0d79 100644 --- a/drivers/clk/qcom/clk-rcg.h +++ b/drivers/clk/qcom/clk-rcg.h @@ -17,6 +17,23 @@ struct freq_tbl { u16 n; }; +#define C(s, h, m, n) { (s), (2 * (h) - 1), (m), (n) } +#define FM(f, confs) { (f), ARRAY_SIZE(confs), (confs) } +#define FMS(f, s, h, m, n) { (f), 1, (const struct freq_conf []){ C(s, h, m, n) } } + +struct freq_conf { + u8 src; + u8 pre_div; + u16 m; + u16 n; +}; + +struct freq_multi_tbl { + unsigned long freq; + int num_confs; + const struct freq_conf *confs; +}; + /** * struct mn - M/N:D counter * @mnctr_en_bit: bit to enable mn counter @@ -138,6 +155,7 @@ extern const struct clk_ops clk_dyn_rcg_ops; * @safe_src_index: safe src index value * @parent_map: map from software's parent index to hardware's src_sel field * @freq_tbl: frequency table + * @freq_multi_tbl: frequency table for clocks reachable with multiple RCGs conf * @clkr: regmap clock handle * @cfg_off: defines the cfg register offset from the CMD_RCGR + CFG_REG * @parked_cfg: cached value of the CFG register for parked RCGs @@ -148,7 +166,10 @@ struct clk_rcg2 { u8 hid_width; u8 safe_src_index; const struct parent_map *parent_map; - const struct freq_tbl *freq_tbl; + union { + const struct freq_tbl *freq_tbl; + const struct freq_multi_tbl *freq_multi_tbl; + }; struct clk_regmap clkr; u8 cfg_off; u32 parked_cfg; From patchwork Wed May 31 22:26:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 13262781 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C9CFC7EE23 for ; Wed, 31 May 2023 22:29:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230490AbjEaW3E (ORCPT ); Wed, 31 May 2023 18:29:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45992 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230446AbjEaW2y (ORCPT ); Wed, 31 May 2023 18:28:54 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4DDCE40; Wed, 31 May 2023 15:28:14 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id 2adb3069b0e04-4f3edc05aa5so36467e87.3; Wed, 31 May 2023 15:28:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1685572093; x=1688164093; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=70rKVpOd5wJ3gBObsOuE50d5h49q/cRV9IOkJxvD4f0=; b=FNurri+x8xi17/7oHhHUw3Kt6VJx87UgXVgwEmAcmGDK4p60HAeOYOqDrAWEaL0xhT H1Iu+gTJLDA5y+JBsGkmewDxBux106wP2O+DWq1hdeS4ce+hs6iC74krSk/T3HEGuTPq IjmOYj692HbBg1cjMQ9dkWKL/IyuwlJRQQiEXFPNp9xk8XwRaOjX3HDATLp6/rlYL4y4 bicp9Let1nXPSej584nXhu43wD3nFhn8a3XayLBLwiaqWn/5+GRzgVb8mJc4v27tOLe4 qAjHjdD+IN5LuMkhnhfJ3Mk3Tdj2O5xBmLx6xzR34uoJtr20q2xAzOQvwhWZVHRh7gxM omGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1685572093; x=1688164093; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=70rKVpOd5wJ3gBObsOuE50d5h49q/cRV9IOkJxvD4f0=; b=ehQdX1ifo3GkCL6zFvPXR0tmM+kyHoge85hIycsbusxZNdbQaOH1hMQS+fgT0XyEWN +OZpDvd9vwVWPIW/+po8b3wYW2i2jL7Kx5+4BHx4tWegoA5Ebr1Z4ohHGYghDU395o+n PAcbFeY+jBGai0+UZOVoJGjCQa5LPNWWZOXnTdflhJBUlQ7e7/USGDKb+yeTCneGYmoP D2EJm97bnSSR8JrU/IMAP5I/0PIaY51NnNG/IsSSbOIGk9L2mQ3GYTMCNeUp/Wjs+HzM y6jk50U2oI//hFW+tgZ5jf1ARgykBW9C12eQFu//pYTzITllqQMCy/rk8Lg2LhBuV8ho fRSQ== X-Gm-Message-State: AC+VfDz0Fiqre+7Wjd7ddmf8iL1QCxqkNL5J+oZOV2bwbo4tiG3yCO94 vF1CSpCbQ/qIY7T6CpxSCrhGI6K1CdY= X-Google-Smtp-Source: ACHHUZ4C3xtfKqlv5GcUGqROnl6/se6nIKa97hzQo4+3AcfexBgCvpnYiHmOSq+IfHOF+fElmb3CHQ== X-Received: by 2002:ac2:430f:0:b0:4f4:b28d:73eb with SMTP id l15-20020ac2430f000000b004f4b28d73ebmr185558lfh.12.1685572092464; Wed, 31 May 2023 15:28:12 -0700 (PDT) Received: from localhost.localdomain (93-34-93-173.ip49.fastwebnet.it. [93.34.93.173]) by smtp.googlemail.com with ESMTPSA id 9-20020a05600c028900b003f6132f95e6sm70020wmk.35.2023.05.31.15.28.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 15:28:03 -0700 (PDT) From: Christian Marangi To: Bjorn Andersson , Andy Gross , Konrad Dybcio , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christian Marangi Subject: [PATCH v5 2/3] clk: qcom: clk-rcg2: add support for rcg2 freq multi ops Date: Thu, 1 Jun 2023 00:26:53 +0200 Message-Id: <20230531222654.25475-3-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230531222654.25475-1-ansuelsmth@gmail.com> References: <20230531222654.25475-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Some RCG frequency can be reached by multiple configuration. Add clk_rcg2_fm_ops ops to support these special RCG configurations. These alternative ops will select the frequency using a CEIL policy. When the correct frequency is found, the correct config is selected by calculating the final rate (by checking the defined parent and values in the config that is being checked) and deciding based on the one that is less different than the requested one. These check are skipped if there is just on config for the requested freq. qcom_find_freq_multi is added to search the freq with the new struct freq_multi_tbl. __clk_rcg2_select_conf is used to select the correct conf by simulating the final clock. If a conf can't be found due to parent not reachable, a WARN is printed and -EINVAL is returned. Signed-off-by: Christian Marangi --- drivers/clk/qcom/clk-rcg.h | 1 + drivers/clk/qcom/clk-rcg2.c | 163 ++++++++++++++++++++++++++++++++++++ drivers/clk/qcom/common.c | 18 ++++ drivers/clk/qcom/common.h | 2 + 4 files changed, 184 insertions(+) diff --git a/drivers/clk/qcom/clk-rcg.h b/drivers/clk/qcom/clk-rcg.h index dc85b46b0d79..f8ec989ed3d9 100644 --- a/drivers/clk/qcom/clk-rcg.h +++ b/drivers/clk/qcom/clk-rcg.h @@ -188,6 +188,7 @@ struct clk_rcg2_gfx3d { extern const struct clk_ops clk_rcg2_ops; extern const struct clk_ops clk_rcg2_floor_ops; +extern const struct clk_ops clk_rcg2_fm_ops; extern const struct clk_ops clk_rcg2_mux_closest_ops; extern const struct clk_ops clk_edp_pixel_ops; extern const struct clk_ops clk_byte_ops; diff --git a/drivers/clk/qcom/clk-rcg2.c b/drivers/clk/qcom/clk-rcg2.c index 76551534f10d..9a139fc8bbfa 100644 --- a/drivers/clk/qcom/clk-rcg2.c +++ b/drivers/clk/qcom/clk-rcg2.c @@ -266,6 +266,112 @@ static int _freq_tbl_determine_rate(struct clk_hw *hw, const struct freq_tbl *f, return 0; } +static const struct freq_conf * +__clk_rcg2_select_conf(struct clk_hw *hw, const struct freq_multi_tbl *f, + unsigned long req_rate) +{ + unsigned long rate_diff, best_rate_diff = ULONG_MAX; + const struct freq_conf *conf, *best_conf; + struct clk_rcg2 *rcg = to_clk_rcg2(hw); + const char *name = clk_hw_get_name(hw); + unsigned long parent_rate, rate; + struct clk_hw *p; + int index, i; + + /* Exit early if only one config is defined */ + if (f->num_confs == 1) + return f->confs; + + /* Search in each provided config the one that is near the wanted rate */ + for (i = 0, conf = f->confs; i < f->num_confs; i++, conf++) { + index = qcom_find_src_index(hw, rcg->parent_map, conf->src); + if (index < 0) + continue; + + p = clk_hw_get_parent_by_index(hw, index); + if (!p) + continue; + + parent_rate = clk_hw_get_rate(p); + rate = calc_rate(parent_rate, conf->n, conf->m, conf->n, conf->pre_div); + + if (rate == req_rate) { + best_conf = conf; + break; + } + + rate_diff = abs(req_rate - rate); + if (rate_diff < best_rate_diff) { + best_rate_diff = rate_diff; + best_conf = conf; + } + } + + /* + * Very unlikely. Warn if we couldn't find a correct config + * due to parent not present. + */ + if (unlikely(i == f->num_confs)) { + WARN(1, "%s: can't find a configuration for rate %lu.", + name, req_rate); + return ERR_PTR(-EINVAL); + } + + return best_conf; +} + +static int _freq_tbl_fm_determine_rate(struct clk_hw *hw, const struct freq_multi_tbl *f, + struct clk_rate_request *req) +{ + unsigned long clk_flags, rate = req->rate; + struct clk_rcg2 *rcg = to_clk_rcg2(hw); + const struct freq_conf *conf; + struct clk_hw *p; + int index; + + f = qcom_find_freq_multi(f, rate); + if (!f || !f->confs) + return -EINVAL; + + conf = __clk_rcg2_select_conf(hw, f, rate); + if (IS_ERR(conf)) + return PTR_ERR(conf); + index = qcom_find_src_index(hw, rcg->parent_map, conf->src); + if (index < 0) + return index; + + clk_flags = clk_hw_get_flags(hw); + p = clk_hw_get_parent_by_index(hw, index); + if (!p) + return -EINVAL; + + if (clk_flags & CLK_SET_RATE_PARENT) { + rate = f->freq; + if (conf->pre_div) { + if (!rate) + rate = req->rate; + rate /= 2; + rate *= conf->pre_div + 1; + } + + if (conf->n) { + u64 tmp = rate; + + tmp = tmp * conf->n; + do_div(tmp, conf->m); + rate = tmp; + } + } else { + rate = clk_hw_get_rate(p); + } + + req->best_parent_hw = p; + req->best_parent_rate = rate; + req->rate = f->freq; + + return 0; +} + static int clk_rcg2_determine_rate(struct clk_hw *hw, struct clk_rate_request *req) { @@ -282,6 +388,14 @@ static int clk_rcg2_determine_floor_rate(struct clk_hw *hw, return _freq_tbl_determine_rate(hw, rcg->freq_tbl, req, FLOOR); } +static int clk_rcg2_fm_determine_rate(struct clk_hw *hw, + struct clk_rate_request *req) +{ + struct clk_rcg2 *rcg = to_clk_rcg2(hw); + + return _freq_tbl_fm_determine_rate(hw, rcg->freq_multi_tbl, req); +} + static int __clk_rcg2_configure(struct clk_rcg2 *rcg, const struct freq_tbl *f, u32 *_cfg) { @@ -375,6 +489,30 @@ static int __clk_rcg2_set_rate(struct clk_hw *hw, unsigned long rate, return clk_rcg2_configure(rcg, f); } +static int __clk_rcg2_fm_set_rate(struct clk_hw *hw, unsigned long rate) +{ + struct clk_rcg2 *rcg = to_clk_rcg2(hw); + const struct freq_multi_tbl *f; + const struct freq_conf *conf; + struct freq_tbl f_tbl; + + f = qcom_find_freq_multi(rcg->freq_multi_tbl, rate); + if (!f || !f->confs) + return -EINVAL; + + conf = __clk_rcg2_select_conf(hw, f, rate); + if (IS_ERR(conf)) + return PTR_ERR(conf); + + f_tbl.freq = f->freq; + f_tbl.src = conf->src; + f_tbl.pre_div = conf->pre_div; + f_tbl.m = conf->m; + f_tbl.n = conf->n; + + return clk_rcg2_configure(rcg, &f_tbl); +} + static int clk_rcg2_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { @@ -387,6 +525,12 @@ static int clk_rcg2_set_floor_rate(struct clk_hw *hw, unsigned long rate, return __clk_rcg2_set_rate(hw, rate, FLOOR); } +static int clk_rcg2_fm_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + return __clk_rcg2_fm_set_rate(hw, rate); +} + static int clk_rcg2_set_rate_and_parent(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate, u8 index) { @@ -399,6 +543,12 @@ static int clk_rcg2_set_floor_rate_and_parent(struct clk_hw *hw, return __clk_rcg2_set_rate(hw, rate, FLOOR); } +static int clk_rcg2_fm_set_rate_and_parent(struct clk_hw *hw, + unsigned long rate, unsigned long parent_rate, u8 index) +{ + return __clk_rcg2_fm_set_rate(hw, rate); +} + static int clk_rcg2_get_duty_cycle(struct clk_hw *hw, struct clk_duty *duty) { struct clk_rcg2 *rcg = to_clk_rcg2(hw); @@ -509,6 +659,19 @@ const struct clk_ops clk_rcg2_floor_ops = { }; EXPORT_SYMBOL_GPL(clk_rcg2_floor_ops); +const struct clk_ops clk_rcg2_fm_ops = { + .is_enabled = clk_rcg2_is_enabled, + .get_parent = clk_rcg2_get_parent, + .set_parent = clk_rcg2_set_parent, + .recalc_rate = clk_rcg2_recalc_rate, + .determine_rate = clk_rcg2_fm_determine_rate, + .set_rate = clk_rcg2_fm_set_rate, + .set_rate_and_parent = clk_rcg2_fm_set_rate_and_parent, + .get_duty_cycle = clk_rcg2_get_duty_cycle, + .set_duty_cycle = clk_rcg2_set_duty_cycle, +}; +EXPORT_SYMBOL_GPL(clk_rcg2_fm_ops); + const struct clk_ops clk_rcg2_mux_closest_ops = { .determine_rate = __clk_mux_determine_rate_closest, .get_parent = clk_rcg2_get_parent, diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index 75f09e6e057e..48f81e3a5e80 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -41,6 +41,24 @@ struct freq_tbl *qcom_find_freq(const struct freq_tbl *f, unsigned long rate) } EXPORT_SYMBOL_GPL(qcom_find_freq); +const struct freq_multi_tbl *qcom_find_freq_multi(const struct freq_multi_tbl *f, + unsigned long rate) +{ + if (!f) + return NULL; + + if (!f->freq) + return f; + + for (; f->freq; f++) + if (rate <= f->freq) + return f; + + /* Default to our fastest rate */ + return f - 1; +} +EXPORT_SYMBOL_GPL(qcom_find_freq_multi); + const struct freq_tbl *qcom_find_freq_floor(const struct freq_tbl *f, unsigned long rate) { diff --git a/drivers/clk/qcom/common.h b/drivers/clk/qcom/common.h index 9c8f7b798d9f..2d4a8a837e6c 100644 --- a/drivers/clk/qcom/common.h +++ b/drivers/clk/qcom/common.h @@ -45,6 +45,8 @@ extern const struct freq_tbl *qcom_find_freq(const struct freq_tbl *f, unsigned long rate); extern const struct freq_tbl *qcom_find_freq_floor(const struct freq_tbl *f, unsigned long rate); +extern const struct freq_multi_tbl *qcom_find_freq_multi(const struct freq_multi_tbl *f, + unsigned long rate); extern void qcom_pll_set_fsm_mode(struct regmap *m, u32 reg, u8 bias_count, u8 lock_count); 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[93.34.93.173]) by smtp.googlemail.com with ESMTPSA id 9-20020a05600c028900b003f6132f95e6sm70020wmk.35.2023.05.31.15.28.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 May 2023 15:28:13 -0700 (PDT) From: Christian Marangi To: Bjorn Andersson , Andy Gross , Konrad Dybcio , Michael Turquette , Stephen Boyd , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Christian Marangi Subject: [PATCH v5 3/3] clk: qcom: gcc-ipq8074: rework nss_port5/6 clock to multiple conf Date: Thu, 1 Jun 2023 00:26:54 +0200 Message-Id: <20230531222654.25475-4-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230531222654.25475-1-ansuelsmth@gmail.com> References: <20230531222654.25475-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Rework nss_port5/6 to use the new multiple configuration implementation and correctly fix the clocks for these port under some corner case. This is particularly relevant for device that have 2.5G or 10G port connected to port5 or port 6 on ipq8074. As the parent are shared across multiple port it may be required to select the correct configuration to accomplish the desired clock. Without this patch such port doesn't work in some specific ethernet speed as the clock will be set to the wrong frequency as we just select the first configuration for the related frequency instead of selecting the best one. Signed-off-by: Christian Marangi --- drivers/clk/qcom/gcc-ipq8074.c | 120 +++++++++++++++++++++------------ 1 file changed, 76 insertions(+), 44 deletions(-) diff --git a/drivers/clk/qcom/gcc-ipq8074.c b/drivers/clk/qcom/gcc-ipq8074.c index 6541d98c0348..bce459cecb2d 100644 --- a/drivers/clk/qcom/gcc-ipq8074.c +++ b/drivers/clk/qcom/gcc-ipq8074.c @@ -1682,15 +1682,23 @@ static struct clk_regmap_div nss_port4_tx_div_clk_src = { }, }; -static const struct freq_tbl ftbl_nss_port5_rx_clk_src[] = { - F(19200000, P_XO, 1, 0, 0), - F(25000000, P_UNIPHY1_RX, 12.5, 0, 0), - F(25000000, P_UNIPHY0_RX, 5, 0, 0), - F(78125000, P_UNIPHY1_RX, 4, 0, 0), - F(125000000, P_UNIPHY1_RX, 2.5, 0, 0), - F(125000000, P_UNIPHY0_RX, 1, 0, 0), - F(156250000, P_UNIPHY1_RX, 2, 0, 0), - F(312500000, P_UNIPHY1_RX, 1, 0, 0), +static const struct freq_conf ftbl_nss_port5_rx_clk_src_25[] = { + C(P_UNIPHY1_RX, 12.5, 0, 0), + C(P_UNIPHY0_RX, 5, 0, 0), +}; + +static const struct freq_conf ftbl_nss_port5_rx_clk_src_125[] = { + C(P_UNIPHY1_RX, 2.5, 0, 0), + C(P_UNIPHY0_RX, 1, 0, 0), +}; + +static const struct freq_multi_tbl ftbl_nss_port5_rx_clk_src[] = { + FMS(19200000, P_XO, 1, 0, 0), + FM(25000000, ftbl_nss_port5_rx_clk_src_25), + FMS(78125000, P_UNIPHY1_RX, 4, 0, 0), + FM(125000000, ftbl_nss_port5_rx_clk_src_125), + FMS(156250000, P_UNIPHY1_RX, 2, 0, 0), + FMS(312500000, P_UNIPHY1_RX, 1, 0, 0), { } }; @@ -1717,14 +1725,14 @@ gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias_map[] = { static struct clk_rcg2 nss_port5_rx_clk_src = { .cmd_rcgr = 0x68060, - .freq_tbl = ftbl_nss_port5_rx_clk_src, + .freq_multi_tbl = ftbl_nss_port5_rx_clk_src, .hid_width = 5, .parent_map = gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias_map, .clkr.hw.init = &(struct clk_init_data){ .name = "nss_port5_rx_clk_src", .parent_data = gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias, .num_parents = ARRAY_SIZE(gcc_xo_uniphy0_rx_tx_uniphy1_rx_tx_ubi32_bias), - .ops = &clk_rcg2_ops, + .ops = &clk_rcg2_fm_ops, }, }; @@ -1744,15 +1752,23 @@ static struct clk_regmap_div nss_port5_rx_div_clk_src = { }, }; -static const struct freq_tbl ftbl_nss_port5_tx_clk_src[] = { - F(19200000, P_XO, 1, 0, 0), - F(25000000, P_UNIPHY1_TX, 12.5, 0, 0), - F(25000000, P_UNIPHY0_TX, 5, 0, 0), - F(78125000, P_UNIPHY1_TX, 4, 0, 0), - F(125000000, P_UNIPHY1_TX, 2.5, 0, 0), - F(125000000, P_UNIPHY0_TX, 1, 0, 0), - F(156250000, P_UNIPHY1_TX, 2, 0, 0), - F(312500000, P_UNIPHY1_TX, 1, 0, 0), +static const struct freq_conf ftbl_nss_port5_tx_clk_src_25[] = { + C(P_UNIPHY1_TX, 12.5, 0, 0), + C(P_UNIPHY0_TX, 5, 0, 0), +}; + +static const struct freq_conf ftbl_nss_port5_tx_clk_src_125[] = { + C(P_UNIPHY1_TX, 2.5, 0, 0), + C(P_UNIPHY0_TX, 1, 0, 0), +}; + +static const struct freq_multi_tbl ftbl_nss_port5_tx_clk_src[] = { + FMS(19200000, P_XO, 1, 0, 0), + FM(25000000, ftbl_nss_port5_tx_clk_src_25), + FMS(78125000, P_UNIPHY1_TX, 4, 0, 0), + FM(125000000, ftbl_nss_port5_tx_clk_src_125), + FMS(156250000, P_UNIPHY1_TX, 2, 0, 0), + FMS(312500000, P_UNIPHY1_TX, 1, 0, 0), { } }; @@ -1779,14 +1795,14 @@ gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias_map[] = { static struct clk_rcg2 nss_port5_tx_clk_src = { .cmd_rcgr = 0x68068, - .freq_tbl = ftbl_nss_port5_tx_clk_src, + .freq_multi_tbl = ftbl_nss_port5_tx_clk_src, .hid_width = 5, .parent_map = gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias_map, .clkr.hw.init = &(struct clk_init_data){ .name = "nss_port5_tx_clk_src", .parent_data = gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias, .num_parents = ARRAY_SIZE(gcc_xo_uniphy0_tx_rx_uniphy1_tx_rx_ubi32_bias), - .ops = &clk_rcg2_ops, + .ops = &clk_rcg2_fm_ops, }, }; @@ -1806,15 +1822,23 @@ static struct clk_regmap_div nss_port5_tx_div_clk_src = { }, }; -static const struct freq_tbl ftbl_nss_port6_rx_clk_src[] = { - F(19200000, P_XO, 1, 0, 0), - F(25000000, P_UNIPHY2_RX, 5, 0, 0), - F(25000000, P_UNIPHY2_RX, 12.5, 0, 0), - F(78125000, P_UNIPHY2_RX, 4, 0, 0), - F(125000000, P_UNIPHY2_RX, 1, 0, 0), - F(125000000, P_UNIPHY2_RX, 2.5, 0, 0), - F(156250000, P_UNIPHY2_RX, 2, 0, 0), - F(312500000, P_UNIPHY2_RX, 1, 0, 0), +static const struct freq_conf ftbl_nss_port6_rx_clk_src_25[] = { + C(P_UNIPHY2_RX, 5, 0, 0), + C(P_UNIPHY2_RX, 12.5, 0, 0), +}; + +static const struct freq_conf ftbl_nss_port6_rx_clk_src_125[] = { + C(P_UNIPHY2_RX, 1, 0, 0), + C(P_UNIPHY2_RX, 2.5, 0, 0), +}; + +static const struct freq_multi_tbl ftbl_nss_port6_rx_clk_src[] = { + FMS(19200000, P_XO, 1, 0, 0), + FM(25000000, ftbl_nss_port6_rx_clk_src_25), + FMS(78125000, P_UNIPHY2_RX, 4, 0, 0), + FM(125000000, ftbl_nss_port6_rx_clk_src_125), + FMS(156250000, P_UNIPHY2_RX, 2, 0, 0), + FMS(312500000, P_UNIPHY2_RX, 1, 0, 0), { } }; @@ -1836,14 +1860,14 @@ static const struct parent_map gcc_xo_uniphy2_rx_tx_ubi32_bias_map[] = { static struct clk_rcg2 nss_port6_rx_clk_src = { .cmd_rcgr = 0x68070, - .freq_tbl = ftbl_nss_port6_rx_clk_src, + .freq_multi_tbl = ftbl_nss_port6_rx_clk_src, .hid_width = 5, .parent_map = gcc_xo_uniphy2_rx_tx_ubi32_bias_map, .clkr.hw.init = &(struct clk_init_data){ .name = "nss_port6_rx_clk_src", .parent_data = gcc_xo_uniphy2_rx_tx_ubi32_bias, .num_parents = ARRAY_SIZE(gcc_xo_uniphy2_rx_tx_ubi32_bias), - .ops = &clk_rcg2_ops, + .ops = &clk_rcg2_fm_ops, }, }; @@ -1863,15 +1887,23 @@ static struct clk_regmap_div nss_port6_rx_div_clk_src = { }, }; -static const struct freq_tbl ftbl_nss_port6_tx_clk_src[] = { - F(19200000, P_XO, 1, 0, 0), - F(25000000, P_UNIPHY2_TX, 5, 0, 0), - F(25000000, P_UNIPHY2_TX, 12.5, 0, 0), - F(78125000, P_UNIPHY2_TX, 4, 0, 0), - F(125000000, P_UNIPHY2_TX, 1, 0, 0), - F(125000000, P_UNIPHY2_TX, 2.5, 0, 0), - F(156250000, P_UNIPHY2_TX, 2, 0, 0), - F(312500000, P_UNIPHY2_TX, 1, 0, 0), +static const struct freq_conf ftbl_nss_port6_tx_clk_src_25[] = { + C(P_UNIPHY2_TX, 5, 0, 0), + C(P_UNIPHY2_TX, 12.5, 0, 0), +}; + +static const struct freq_conf ftbl_nss_port6_tx_clk_src_125[] = { + C(P_UNIPHY2_TX, 1, 0, 0), + C(P_UNIPHY2_TX, 2.5, 0, 0), +}; + +static const struct freq_multi_tbl ftbl_nss_port6_tx_clk_src[] = { + FMS(19200000, P_XO, 1, 0, 0), + FM(25000000, ftbl_nss_port6_tx_clk_src_25), + FMS(78125000, P_UNIPHY1_RX, 4, 0, 0), + FM(125000000, ftbl_nss_port6_tx_clk_src_125), + FMS(156250000, P_UNIPHY1_RX, 2, 0, 0), + FMS(312500000, P_UNIPHY1_RX, 1, 0, 0), { } }; @@ -1893,14 +1925,14 @@ static const struct parent_map gcc_xo_uniphy2_tx_rx_ubi32_bias_map[] = { static struct clk_rcg2 nss_port6_tx_clk_src = { .cmd_rcgr = 0x68078, - .freq_tbl = ftbl_nss_port6_tx_clk_src, + .freq_multi_tbl = ftbl_nss_port6_tx_clk_src, .hid_width = 5, .parent_map = gcc_xo_uniphy2_tx_rx_ubi32_bias_map, .clkr.hw.init = &(struct clk_init_data){ .name = "nss_port6_tx_clk_src", .parent_data = gcc_xo_uniphy2_tx_rx_ubi32_bias, .num_parents = ARRAY_SIZE(gcc_xo_uniphy2_tx_rx_ubi32_bias), - .ops = &clk_rcg2_ops, + .ops = &clk_rcg2_fm_ops, }, };