From patchwork Mon Nov 21 12:29:54 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 13050848 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 49898C4332F for ; Mon, 21 Nov 2022 12:40:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ew6+L9aqHqlZQywPj238kgI7CvZBeJY2YyKt211tEzo=; b=ComKt42aFKjVHFFOjYLspHDb8T IhYJC43xnSt64vAGO9pmXlRSCOfkD91XVnTlo4KijlsITe4HJIFPJR44z3/A9OZL3XXz7f09l3X+r XvVa0WSqITqPoXUAbvLc7IMpYy1KW3g56JqBvA7q5odc4S2U+2JFO5zYA+Y8XnsGNNof13+H0IEEk 3UfaiHbLTc9xfI++ZHdp0Qe5U5oUlN1zOTMyDIEfQO4LMY5cRjNqMwqEbMKq8FzMRINLN+1LoHAhX jb18r7Z6Iimt0bE/rJeLFE3gdFgfkhOFRujhxjETVcm55GFQ9eFk4PJoHEkRDT29eXqevNwpUR6il xTiXlDKQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox65t-00DdYc-4Z; Mon, 21 Nov 2022 12:40:13 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox65o-00DdVF-Fc; Mon, 21 Nov 2022 12:40:10 +0000 X-UUID: b69daf2ff61f4021847bdb44056d46bb-20221121 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=ew6+L9aqHqlZQywPj238kgI7CvZBeJY2YyKt211tEzo=; b=pbWWk8BJEmmvmxYf0EUa302PrvYbWCSFeM8EIiWfkTbABGJfh8Wj9IRs6Q8YYbL94dTXfGNSdOnUCsR6DGRT57uZiJQzulNeqM6z3JKxb73vUi7as5GuYrXNi+O2iWCMlWobF7YwIKxP28uleM2tKW5CdZyUzQnU6lSFD9Bt7kI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:e15fa230-7376-4e55-9340-9003675eea6c,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:62cd327,CLOUDID:6cfbccdb-6ad4-42ff-91f3-18e0272db660,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: b69daf2ff61f4021847bdb44056d46bb-20221121 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 904609022; Mon, 21 Nov 2022 05:40:02 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 21 Nov 2022 20:29:58 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 21 Nov 2022 20:29:58 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH v5 1/4] clk: mediatek: Export PLL operations symbols Date: Mon, 21 Nov 2022 20:29:54 +0800 Message-ID: <20221121122957.21611-2-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221121122957.21611-1-johnson.wang@mediatek.com> References: <20221121122957.21611-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221121_044008_592763_1F8C938C X-CRM114-Status: GOOD ( 20.18 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Export PLL operations and register functions for different type of clock driver used. Co-developed-by: Edward-JW Yang Signed-off-by: Edward-JW Yang Signed-off-by: Johnson Wang Reviewed-by: AngeloGioacchino Del Regno --- drivers/clk/mediatek/clk-pll.c | 84 ++++++++++++++-------------------- drivers/clk/mediatek/clk-pll.h | 55 ++++++++++++++++++++++ 2 files changed, 89 insertions(+), 50 deletions(-) diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c index 54e6cfd29dfc..a4eca5fd539c 100644 --- a/drivers/clk/mediatek/clk-pll.c +++ b/drivers/clk/mediatek/clk-pll.c @@ -27,37 +27,10 @@ #define AUDPLL_TUNER_EN BIT(31) -#define POSTDIV_MASK 0x7 - /* default 7 bits integer, can be overridden with pcwibits. */ #define INTEGER_BITS 7 -/* - * MediaTek PLLs are configured through their pcw value. The pcw value describes - * a divider in the PLL feedback loop which consists of 7 bits for the integer - * part and the remaining bits (if present) for the fractional part. Also they - * have a 3 bit power-of-two post divider. - */ - -struct mtk_clk_pll { - struct clk_hw hw; - void __iomem *base_addr; - void __iomem *pd_addr; - void __iomem *pwr_addr; - void __iomem *tuner_addr; - void __iomem *tuner_en_addr; - void __iomem *pcw_addr; - void __iomem *pcw_chg_addr; - void __iomem *en_addr; - const struct mtk_pll_data *data; -}; - -static inline struct mtk_clk_pll *to_mtk_clk_pll(struct clk_hw *hw) -{ - return container_of(hw, struct mtk_clk_pll, hw); -} - -static int mtk_pll_is_prepared(struct clk_hw *hw) +int mtk_pll_is_prepared(struct clk_hw *hw) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); @@ -161,8 +134,8 @@ static void mtk_pll_set_rate_regs(struct mtk_clk_pll *pll, u32 pcw, * @fin: The input frequency * */ -static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, - u32 freq, u32 fin) +void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, + u32 freq, u32 fin) { unsigned long fmin = pll->data->fmin ? pll->data->fmin : (1000 * MHZ); const struct mtk_pll_div_table *div_table = pll->data->div_table; @@ -198,8 +171,8 @@ static void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, *pcw = (u32)_pcw; } -static int mtk_pll_set_rate(struct clk_hw *hw, unsigned long rate, - unsigned long parent_rate) +int mtk_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); u32 pcw = 0; @@ -211,8 +184,7 @@ static int mtk_pll_set_rate(struct clk_hw *hw, unsigned long rate, return 0; } -static unsigned long mtk_pll_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) +unsigned long mtk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); u32 postdiv; @@ -227,8 +199,8 @@ static unsigned long mtk_pll_recalc_rate(struct clk_hw *hw, return __mtk_pll_recalc_rate(pll, parent_rate, pcw, postdiv); } -static long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate, - unsigned long *prate) +long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); u32 pcw = 0; @@ -239,7 +211,7 @@ static long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate, return __mtk_pll_recalc_rate(pll, *prate, pcw, postdiv); } -static int mtk_pll_prepare(struct clk_hw *hw) +int mtk_pll_prepare(struct clk_hw *hw) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); u32 r; @@ -273,7 +245,7 @@ static int mtk_pll_prepare(struct clk_hw *hw) return 0; } -static void mtk_pll_unprepare(struct clk_hw *hw) +void mtk_pll_unprepare(struct clk_hw *hw) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); u32 r; @@ -301,7 +273,7 @@ static void mtk_pll_unprepare(struct clk_hw *hw) writel(r, pll->pwr_addr); } -static const struct clk_ops mtk_pll_ops = { +const struct clk_ops mtk_pll_ops = { .is_prepared = mtk_pll_is_prepared, .prepare = mtk_pll_prepare, .unprepare = mtk_pll_unprepare, @@ -310,18 +282,15 @@ static const struct clk_ops mtk_pll_ops = { .set_rate = mtk_pll_set_rate, }; -static struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, - void __iomem *base) +struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll, + const struct mtk_pll_data *data, + void __iomem *base, + const struct clk_ops *pll_ops) { - struct mtk_clk_pll *pll; struct clk_init_data init = {}; int ret; const char *parent_name = "clk26m"; - pll = kzalloc(sizeof(*pll), GFP_KERNEL); - if (!pll) - return ERR_PTR(-ENOMEM); - pll->base_addr = base + data->reg; pll->pwr_addr = base + data->pwr_reg; pll->pd_addr = base + data->pd_reg; @@ -343,7 +312,7 @@ static struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, init.name = data->name; init.flags = (data->flags & PLL_AO) ? CLK_IS_CRITICAL : 0; - init.ops = &mtk_pll_ops; + init.ops = pll_ops; if (data->parent_name) init.parent_names = &data->parent_name; else @@ -360,7 +329,22 @@ static struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, return &pll->hw; } -static void mtk_clk_unregister_pll(struct clk_hw *hw) +struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, + void __iomem *base) +{ + struct mtk_clk_pll *pll; + struct clk_hw *hw; + + pll = kzalloc(sizeof(*pll), GFP_KERNEL); + if (!pll) + return ERR_PTR(-ENOMEM); + + hw = mtk_clk_register_pll_ops(pll, data, base, &mtk_pll_ops); + + return hw; +} + +void mtk_clk_unregister_pll(struct clk_hw *hw) { struct mtk_clk_pll *pll; @@ -423,8 +407,8 @@ int mtk_clk_register_plls(struct device_node *node, } EXPORT_SYMBOL_GPL(mtk_clk_register_plls); -static __iomem void *mtk_clk_pll_get_base(struct clk_hw *hw, - const struct mtk_pll_data *data) +__iomem void *mtk_clk_pll_get_base(struct clk_hw *hw, + const struct mtk_pll_data *data) { struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); diff --git a/drivers/clk/mediatek/clk-pll.h b/drivers/clk/mediatek/clk-pll.h index fe3199715688..f17278ff15d7 100644 --- a/drivers/clk/mediatek/clk-pll.h +++ b/drivers/clk/mediatek/clk-pll.h @@ -7,6 +7,7 @@ #ifndef __DRV_CLK_MTK_PLL_H #define __DRV_CLK_MTK_PLL_H +#include #include struct clk_ops; @@ -20,6 +21,7 @@ struct mtk_pll_div_table { #define HAVE_RST_BAR BIT(0) #define PLL_AO BIT(1) +#define POSTDIV_MASK GENMASK(2, 0) struct mtk_pll_data { int id; @@ -48,10 +50,63 @@ struct mtk_pll_data { u8 pll_en_bit; /* Assume 0, indicates BIT(0) by default */ }; +/* + * MediaTek PLLs are configured through their pcw value. The pcw value describes + * a divider in the PLL feedback loop which consists of 7 bits for the integer + * part and the remaining bits (if present) for the fractional part. Also they + * have a 3 bit power-of-two post divider. + */ + +struct mtk_clk_pll { + struct clk_hw hw; + void __iomem *base_addr; + void __iomem *pd_addr; + void __iomem *pwr_addr; + void __iomem *tuner_addr; + void __iomem *tuner_en_addr; + void __iomem *pcw_addr; + void __iomem *pcw_chg_addr; + void __iomem *en_addr; + const struct mtk_pll_data *data; +}; + int mtk_clk_register_plls(struct device_node *node, const struct mtk_pll_data *plls, int num_plls, struct clk_hw_onecell_data *clk_data); void mtk_clk_unregister_plls(const struct mtk_pll_data *plls, int num_plls, struct clk_hw_onecell_data *clk_data); +extern const struct clk_ops mtk_pll_ops; + +static inline struct mtk_clk_pll *to_mtk_clk_pll(struct clk_hw *hw) +{ + return container_of(hw, struct mtk_clk_pll, hw); +} + +int mtk_pll_is_prepared(struct clk_hw *hw); + +int mtk_pll_prepare(struct clk_hw *hw); + +void mtk_pll_unprepare(struct clk_hw *hw); + +unsigned long mtk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate); + +void mtk_pll_calc_values(struct mtk_clk_pll *pll, u32 *pcw, u32 *postdiv, + u32 freq, u32 fin); +int mtk_pll_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate); +long mtk_pll_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *prate); + +struct clk_hw *mtk_clk_register_pll_ops(struct mtk_clk_pll *pll, + const struct mtk_pll_data *data, + void __iomem *base, + const struct clk_ops *pll_ops); +struct clk_hw *mtk_clk_register_pll(const struct mtk_pll_data *data, + void __iomem *base); +void mtk_clk_unregister_pll(struct clk_hw *hw); + +__iomem void *mtk_clk_pll_get_base(struct clk_hw *hw, + const struct mtk_pll_data *data); + #endif /* __DRV_CLK_MTK_PLL_H */ From patchwork Mon Nov 21 12:29:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 13050916 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DE1ADC4332F for ; Mon, 21 Nov 2022 13:30:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=chwOzhzqZetC3MhgqfNY3NF6RywTjwGetB7f0sa8uTc=; b=pleyuKuAEf3p8ZYax7XfxHRE20 DFg42KVhCM5xyFw8Who40RS8j5RAUVLIYDBml9pKzhjxUCjTFTWq4X6/SousQ7FQ2p7YWlQqoXo77 Y0ZbNftWDRlTGY7SctwvW0XUBuIvHXIiqVdwv+LRljOEdhKLhA6JUV2zs2DrCQX5reDCTgLiny6Br mdhX4H+Q/mflgcc0oGRj5Z0LXcaRkiqiVLMyXM87q2A4CW/dtaIndyRNjLtqFINcviUippUJOhH/9 3WkqAJlfSTGyg//Hobp1ybBYooZA8dBLuBpFdXS8w+VbC/aZzBUaV1ifleqNe6mb97i0A1bO8dL8C XY0FX3Ng==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox6sl-00DySZ-H0; Mon, 21 Nov 2022 13:30:43 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox6si-00DyRL-9l; Mon, 21 Nov 2022 13:30:41 +0000 X-UUID: d559f8f5da114e8ab89e8ff71505903e-20221121 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=chwOzhzqZetC3MhgqfNY3NF6RywTjwGetB7f0sa8uTc=; b=lLYZivN2/S1nwx6oLSNyIpCcHWdfX8tjwWhMlfJNySMOA/FgVxDqznoVDSFFTm7qgKQjZzU23gn1yoUDtSnpb2XznPH4lo+fI5T+BU+Qhx5s+QxuTj/dezU2+GzMJzzHeIN2GK8fk8ftt9KrrV5ARYb0P3vsLVy4AWq9sczM2GI=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:cafcd721-6daa-4e45-b553-bd5890eb9e27,IP:0,U RL:25,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:25 X-CID-META: VersionHash:62cd327,CLOUDID:1badcddb-6ad4-42ff-91f3-18e0272db660,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: d559f8f5da114e8ab89e8ff71505903e-20221121 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1163553125; Mon, 21 Nov 2022 06:30:35 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs13n2.mediatek.inc (172.21.101.108) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 21 Nov 2022 20:29:59 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 21 Nov 2022 20:29:59 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH v5 2/4] dt-bindings: clock: mediatek: Add new bindings of MediaTek frequency hopping Date: Mon, 21 Nov 2022 20:29:55 +0800 Message-ID: <20221121122957.21611-3-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221121122957.21611-1-johnson.wang@mediatek.com> References: <20221121122957.21611-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221121_053040_370982_6188AA63 X-CRM114-Status: GOOD ( 13.21 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add the new binding documentation for MediaTek frequency hopping and spread spectrum clocking control. Co-developed-by: Edward-JW Yang Signed-off-by: Edward-JW Yang Signed-off-by: Johnson Wang Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Rob Herring --- .../bindings/clock/mediatek,mt8186-fhctl.yaml | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/mediatek,mt8186-fhctl.yaml diff --git a/Documentation/devicetree/bindings/clock/mediatek,mt8186-fhctl.yaml b/Documentation/devicetree/bindings/clock/mediatek,mt8186-fhctl.yaml new file mode 100644 index 000000000000..cfd042ac1e14 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/mediatek,mt8186-fhctl.yaml @@ -0,0 +1,53 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/clock/mediatek,mt8186-fhctl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek frequency hopping and spread spectrum clocking control + +maintainers: + - Edward-JW Yang + +description: | + Frequency hopping control (FHCTL) is a piece of hardware that control + some PLLs to adopt "hopping" mechanism to adjust their frequency. + Spread spectrum clocking (SSC) is another function provided by this hardware. + +properties: + compatible: + const: mediatek,mt8186-fhctl + + reg: + maxItems: 1 + + clocks: + description: Phandles of the PLL with FHCTL hardware capability. + minItems: 1 + maxItems: 30 + + mediatek,hopping-ssc-percent: + description: The percentage of spread spectrum clocking for one PLL. + minItems: 1 + maxItems: 30 + items: + default: 0 + minimum: 0 + maximum: 8 + +required: + - compatible + - reg + - clocks + +additionalProperties: false + +examples: + - | + #include + fhctl: fhctl@1000ce00 { + compatible = "mediatek,mt8186-fhctl"; + reg = <0x1000ce00 0x200>; + clocks = <&apmixedsys CLK_APMIXED_MSDCPLL>; + mediatek,hopping-ssc-percent = <3>; + }; From patchwork Mon Nov 21 12:29:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 13050829 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8FAA2C433FE for ; Mon, 21 Nov 2022 12:31:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=P2gBUQV5U+DSvs6HTUi65xSW67meDh1qY+gJfeLoGEg=; b=ioSh4On9IR7wDnv5M3Y2GxJ7D8 U9KHbntUQxL4ybCZIDn67ubarOIM3tcynQEHhU1HhyvgHcfPdSZU6ucOMwe+G/iqshqX2BFF97tWq nvFAZeLuvcJtN2+bMDZzDRJ17qflwhqa7xPoYxNXoHkttAplggnwUs7oC5f38PGrFlPU7yXMwqEZJ aSe7KymJDcS5M7g7f7utzqavZ093ZIG+TwMUnQTDYEWVylPbo8Z+TZa1VmaH6w+x6IsvoeM6Mo6Jn AP2mdKROlkqLnnzn02l9W4STAb2RKBJqNMjz8IQ0x+uo/xdjxxeKQmPGWOpkWFNR36+gjhWd0TyQX nSj8LDGQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox5wu-00DWtE-F3; Mon, 21 Nov 2022 12:30:56 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox5wi-00DWou-Vn; Mon, 21 Nov 2022 12:30:47 +0000 X-UUID: 7d7cb3de3c154cc08afa1855a61bbe46-20221121 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=P2gBUQV5U+DSvs6HTUi65xSW67meDh1qY+gJfeLoGEg=; b=ikmymAYy/M67nzXaMAOFwRP5krJQM6Aw4IfQ+8rVVmv6gY/p/qcpDOOL+66eIE8ZnrH+5cTzDjZOD6r9qA52d5Kqu0dXyqrypGwOUNThI/0WMFonFdQ3QbL68lYG2Fx8JmUQrlrzbRpO+Uyf2EyzEipPDs4tH22XnbK5X+Cc2Fo=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:de3c2a46-666d-431d-8883-b8fbd3e45f10,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:62cd327,CLOUDID:cbd8ccdb-6ad4-42ff-91f3-18e0272db660,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 7d7cb3de3c154cc08afa1855a61bbe46-20221121 Received: from mtkmbs13n2.mediatek.inc [(172.21.101.108)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1914045285; Mon, 21 Nov 2022 05:30:36 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 21 Nov 2022 20:29:59 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 21 Nov 2022 20:29:59 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH v5 3/4] clk: mediatek: Add new clock driver to handle FHCTL hardware Date: Mon, 21 Nov 2022 20:29:56 +0800 Message-ID: <20221121122957.21611-4-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221121122957.21611-1-johnson.wang@mediatek.com> References: <20221121122957.21611-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221121_043045_078055_1D7848A8 X-CRM114-Status: GOOD ( 25.55 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org To implement frequency hopping and spread spectrum clocking function, we introduce new clock type and APIs to handle FHCTL hardware. Co-developed-by: Edward-JW Yang Signed-off-by: Edward-JW Yang Signed-off-by: Johnson Wang Reviewed-by: AngeloGioacchino Del Regno --- drivers/clk/mediatek/Kconfig | 7 + drivers/clk/mediatek/Makefile | 1 + drivers/clk/mediatek/clk-fhctl.c | 244 +++++++++++++++++++++++++++ drivers/clk/mediatek/clk-fhctl.h | 26 +++ drivers/clk/mediatek/clk-pllfh.c | 275 +++++++++++++++++++++++++++++++ drivers/clk/mediatek/clk-pllfh.h | 82 +++++++++ 6 files changed, 635 insertions(+) create mode 100644 drivers/clk/mediatek/clk-fhctl.c create mode 100644 drivers/clk/mediatek/clk-fhctl.h create mode 100644 drivers/clk/mediatek/clk-pllfh.c create mode 100644 drivers/clk/mediatek/clk-pllfh.h diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index 843cea0c7a44..38f667eadda3 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -11,6 +11,13 @@ config COMMON_CLK_MEDIATEK help MediaTek SoCs' clock support. +config COMMON_CLK_MEDIATEK_FHCTL + bool "clock driver for MediaTek FHCTL hardware control" + select COMMON_CLK_MEDIATEK + help + This driver supports MediaTek frequency hopping and + spread spectrum clocking features. + config COMMON_CLK_MT2701 bool "Clock driver for MediaTek MT2701" depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST diff --git a/drivers/clk/mediatek/Makefile b/drivers/clk/mediatek/Makefile index ea3b73240303..e24080fd6e7f 100644 --- a/drivers/clk/mediatek/Makefile +++ b/drivers/clk/mediatek/Makefile @@ -1,5 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_COMMON_CLK_MEDIATEK) += clk-mtk.o clk-pll.o clk-gate.o clk-apmixed.o clk-cpumux.o reset.o clk-mux.o +obj-$(CONFIG_COMMON_CLK_MEDIATEK_FHCTL) += clk-fhctl.o clk-pllfh.o obj-$(CONFIG_COMMON_CLK_MT6765) += clk-mt6765.o obj-$(CONFIG_COMMON_CLK_MT6765_AUDIOSYS) += clk-mt6765-audio.o diff --git a/drivers/clk/mediatek/clk-fhctl.c b/drivers/clk/mediatek/clk-fhctl.c new file mode 100644 index 000000000000..4f271acef5fe --- /dev/null +++ b/drivers/clk/mediatek/clk-fhctl.c @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 MediaTek Inc. + * Author: Edward-JW Yang + */ + +#include +#include + +#include "clk-mtk.h" +#include "clk-pllfh.h" +#include "clk-fhctl.h" + +#define PERCENT_TO_DDSLMT(dds, percent_m10) \ + ((((dds) * (percent_m10)) >> 5) / 100) + +static const struct fhctl_offset fhctl_offset = { + .offset_hp_en = 0x0, + .offset_clk_con = 0x8, + .offset_rst_con = 0xc, + .offset_slope0 = 0x10, + .offset_slope1 = 0x14, + .offset_cfg = 0x0, + .offset_updnlmt = 0x4, + .offset_dds = 0x8, + .offset_dvfs = 0xc, + .offset_mon = 0x10, +}; + +const struct fhctl_offset *fhctl_get_offset_table(void) +{ + return &fhctl_offset; +} + +static void dump_hw(struct mtk_clk_pll *pll, struct fh_pll_regs *regs, + const struct fh_pll_data *data) +{ + pr_info("hp_en<%x>,clk_con<%x>,slope0<%x>,slope1<%x>\n", + readl(regs->reg_hp_en), readl(regs->reg_clk_con), + readl(regs->reg_slope0), readl(regs->reg_slope1)); + pr_info("cfg<%x>,lmt<%x>,dds<%x>,dvfs<%x>,mon<%x>\n", + readl(regs->reg_cfg), readl(regs->reg_updnlmt), + readl(regs->reg_dds), readl(regs->reg_dvfs), + readl(regs->reg_mon)); + pr_info("pcw<%x>\n", readl(pll->pcw_addr)); +} + +static int fhctl_set_ssc_regs(struct mtk_clk_pll *pll, struct fh_pll_regs *regs, + const struct fh_pll_data *data, u32 rate) +{ + u32 updnlmt_val, r; + + writel((readl(regs->reg_cfg) & ~(data->frddsx_en)), regs->reg_cfg); + writel((readl(regs->reg_cfg) & ~(data->sfstrx_en)), regs->reg_cfg); + writel((readl(regs->reg_cfg) & ~(data->fhctlx_en)), regs->reg_cfg); + + if (rate > 0) { + /* Set the relative parameter registers (dt/df/upbnd/downbnd) */ + r = readl(regs->reg_cfg); + r &= ~(data->msk_frddsx_dys); + r |= (data->df_val << (ffs(data->msk_frddsx_dys) - 1)); + writel(r, regs->reg_cfg); + + r = readl(regs->reg_cfg); + r &= ~(data->msk_frddsx_dts); + r |= (data->dt_val << (ffs(data->msk_frddsx_dts) - 1)); + writel(r, regs->reg_cfg); + + writel((readl(pll->pcw_addr) & data->dds_mask) | data->tgl_org, + regs->reg_dds); + + /* Calculate UPDNLMT */ + updnlmt_val = PERCENT_TO_DDSLMT((readl(regs->reg_dds) & + data->dds_mask), rate) << + data->updnlmt_shft; + + writel(updnlmt_val, regs->reg_updnlmt); + writel(readl(regs->reg_hp_en) | BIT(data->fh_id), + regs->reg_hp_en); + /* Enable SSC */ + writel(readl(regs->reg_cfg) | data->frddsx_en, regs->reg_cfg); + /* Enable Hopping control */ + writel(readl(regs->reg_cfg) | data->fhctlx_en, regs->reg_cfg); + + } else { + /* Switch to APMIXEDSYS control */ + writel(readl(regs->reg_hp_en) & ~BIT(data->fh_id), + regs->reg_hp_en); + /* Wait for DDS to be stable */ + udelay(30); + } + + return 0; +} + +static int hopping_hw_flow(struct mtk_clk_pll *pll, struct fh_pll_regs *regs, + const struct fh_pll_data *data, + struct fh_pll_state *state, unsigned int new_dds) +{ + u32 dds_mask = data->dds_mask; + u32 mon_dds = 0; + u32 con_pcw_tmp; + int ret; + + if (state->ssc_rate) + fhctl_set_ssc_regs(pll, regs, data, 0); + + writel((readl(pll->pcw_addr) & dds_mask) | data->tgl_org, + regs->reg_dds); + + writel(readl(regs->reg_cfg) | data->sfstrx_en, regs->reg_cfg); + writel(readl(regs->reg_cfg) | data->fhctlx_en, regs->reg_cfg); + writel(data->slope0_value, regs->reg_slope0); + writel(data->slope1_value, regs->reg_slope1); + + writel(readl(regs->reg_hp_en) | BIT(data->fh_id), regs->reg_hp_en); + writel((new_dds) | (data->dvfs_tri), regs->reg_dvfs); + + /* Wait 1000 us until DDS stable */ + ret = readl_poll_timeout_atomic(regs->reg_mon, mon_dds, + (mon_dds & dds_mask) == new_dds, + 10, 1000); + if (ret) { + pr_warn("%s: FHCTL hopping timeout\n", pll->data->name); + dump_hw(pll, regs, data); + } + + con_pcw_tmp = readl(pll->pcw_addr) & (~dds_mask); + con_pcw_tmp = (con_pcw_tmp | (readl(regs->reg_mon) & dds_mask) | + data->pcwchg); + + writel(con_pcw_tmp, pll->pcw_addr); + writel(readl(regs->reg_hp_en) & ~BIT(data->fh_id), regs->reg_hp_en); + + if (state->ssc_rate) + fhctl_set_ssc_regs(pll, regs, data, state->ssc_rate); + + return ret; +} + +static unsigned int __get_postdiv(struct mtk_clk_pll *pll) +{ + unsigned int regval; + + regval = readl(pll->pd_addr) >> pll->data->pd_shift; + regval &= POSTDIV_MASK; + + return BIT(regval); +} + +static void __set_postdiv(struct mtk_clk_pll *pll, unsigned int postdiv) +{ + unsigned int regval; + + regval = readl(pll->pd_addr); + regval &= ~(POSTDIV_MASK << pll->data->pd_shift); + regval |= (ffs(postdiv) - 1) << pll->data->pd_shift; + writel(regval, pll->pd_addr); +} + +static int fhctl_hopping(struct mtk_fh *fh, unsigned int new_dds, + unsigned int postdiv) +{ + const struct fh_pll_data *data = &fh->pllfh_data->data; + struct fh_pll_state *state = &fh->pllfh_data->state; + struct fh_pll_regs *regs = &fh->regs; + struct mtk_clk_pll *pll = &fh->clk_pll; + spinlock_t *lock = fh->lock; + unsigned int pll_postdiv; + unsigned long flags = 0; + int ret; + + if (postdiv) { + pll_postdiv = __get_postdiv(pll); + + if (postdiv > pll_postdiv) + __set_postdiv(pll, postdiv); + } + + spin_lock_irqsave(lock, flags); + + ret = hopping_hw_flow(pll, regs, data, state, new_dds); + + spin_unlock_irqrestore(lock, flags); + + if (postdiv && postdiv < pll_postdiv) + __set_postdiv(pll, postdiv); + + return ret; +} + +static int fhctl_ssc_enable(struct mtk_fh *fh, u32 rate) +{ + const struct fh_pll_data *data = &fh->pllfh_data->data; + struct fh_pll_state *state = &fh->pllfh_data->state; + struct fh_pll_regs *regs = &fh->regs; + struct mtk_clk_pll *pll = &fh->clk_pll; + spinlock_t *lock = fh->lock; + unsigned long flags = 0; + + spin_lock_irqsave(lock, flags); + + fhctl_set_ssc_regs(pll, regs, data, rate); + state->ssc_rate = rate; + + spin_unlock_irqrestore(lock, flags); + + return 0; +} + +static const struct fh_operation fhctl_ops = { + .hopping = fhctl_hopping, + .ssc_enable = fhctl_ssc_enable, +}; + +const struct fh_operation *fhctl_get_ops(void) +{ + return &fhctl_ops; +} + +void fhctl_hw_init(struct mtk_fh *fh) +{ + const struct fh_pll_data data = fh->pllfh_data->data; + struct fh_pll_state state = fh->pllfh_data->state; + struct fh_pll_regs regs = fh->regs; + u32 val; + + /* initial hw register */ + val = readl(regs.reg_clk_con) | BIT(data.fh_id); + writel(val, regs.reg_clk_con); + + val = readl(regs.reg_rst_con) & ~BIT(data.fh_id); + writel(val, regs.reg_rst_con); + val = readl(regs.reg_rst_con) | BIT(data.fh_id); + writel(val, regs.reg_rst_con); + + writel(0x0, regs.reg_cfg); + writel(0x0, regs.reg_updnlmt); + writel(0x0, regs.reg_dds); + + /* enable ssc if needed */ + if (state.ssc_rate) + fh->ops->ssc_enable(fh, state.ssc_rate); +} diff --git a/drivers/clk/mediatek/clk-fhctl.h b/drivers/clk/mediatek/clk-fhctl.h new file mode 100644 index 000000000000..51275febf086 --- /dev/null +++ b/drivers/clk/mediatek/clk-fhctl.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022 MediaTek Inc. + * Author: Edward-JW Yang + */ + +#ifndef __CLK_FHCTL_H +#define __CLK_FHCTL_H + +struct fhctl_offset { + u32 offset_hp_en; + u32 offset_clk_con; + u32 offset_rst_con; + u32 offset_slope0; + u32 offset_slope1; + u32 offset_cfg; + u32 offset_updnlmt; + u32 offset_dds; + u32 offset_dvfs; + u32 offset_mon; +}; +const struct fhctl_offset *fhctl_get_offset_table(void); +const struct fh_operation *fhctl_get_ops(void); +void fhctl_hw_init(struct mtk_fh *fh); + +#endif diff --git a/drivers/clk/mediatek/clk-pllfh.c b/drivers/clk/mediatek/clk-pllfh.c new file mode 100644 index 000000000000..f48780bec507 --- /dev/null +++ b/drivers/clk/mediatek/clk-pllfh.c @@ -0,0 +1,275 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 MediaTek Inc. + * Author: Edward-JW Yang + */ + +#include +#include +#include +#include +#include +#include + +#include "clk-mtk.h" +#include "clk-pllfh.h" +#include "clk-fhctl.h" + +static DEFINE_SPINLOCK(pllfh_lock); + +inline struct mtk_fh *to_mtk_fh(struct clk_hw *hw) +{ + struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); + + return container_of(pll, struct mtk_fh, clk_pll); +} + +static int mtk_fhctl_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct mtk_clk_pll *pll = to_mtk_clk_pll(hw); + struct mtk_fh *fh = to_mtk_fh(hw); + u32 pcw = 0; + u32 postdiv; + + mtk_pll_calc_values(pll, &pcw, &postdiv, rate, parent_rate); + + return fh->ops->hopping(fh, pcw, postdiv); +} + +static const struct clk_ops mtk_pllfh_ops = { + .is_prepared = mtk_pll_is_prepared, + .prepare = mtk_pll_prepare, + .unprepare = mtk_pll_unprepare, + .recalc_rate = mtk_pll_recalc_rate, + .round_rate = mtk_pll_round_rate, + .set_rate = mtk_fhctl_set_rate, +}; + +static struct mtk_pllfh_data *get_pllfh_by_id(struct mtk_pllfh_data *pllfhs, + int num_fhs, int pll_id) +{ + int i; + + for (i = 0; i < num_fhs; i++) + if (pllfhs[i].data.pll_id == pll_id) + return &pllfhs[i]; + + return NULL; +} + +void fhctl_parse_dt(const u8 *compatible_node, struct mtk_pllfh_data *pllfhs, + int num_fhs) +{ + void __iomem *base; + struct device_node *node; + u32 num_clocks, pll_id, ssc_rate; + int offset, i; + + node = of_find_compatible_node(NULL, NULL, compatible_node); + if (!node) { + pr_err("cannot find \"%s\"\n", compatible_node); + return; + } + + base = of_iomap(node, 0); + if (!base) { + pr_err("%s(): ioremap failed\n", __func__); + return; + } + + num_clocks = of_clk_get_parent_count(node); + if (!num_clocks) { + pr_err("%s(): failed to get clocks property\n", __func__); + return; + } + + for (i = 0; i < num_clocks; i++) { + struct mtk_pllfh_data *pllfh; + + offset = i * 2; + + of_property_read_u32_index(node, "clocks", offset + 1, &pll_id); + of_property_read_u32_index(node, + "mediatek,hopping-ssc-percent", + i, &ssc_rate); + + pllfh = get_pllfh_by_id(pllfhs, num_fhs, pll_id); + if (!pllfh) + continue; + + pllfh->state.fh_enable = 1; + pllfh->state.ssc_rate = ssc_rate; + pllfh->state.base = base; + } +} + +static void pllfh_init(struct mtk_fh *fh, struct mtk_pllfh_data *pllfh_data) +{ + struct fh_pll_regs *regs = &fh->regs; + const struct fhctl_offset *offset; + void __iomem *base = pllfh_data->state.base; + void __iomem *fhx_base = base + pllfh_data->data.fhx_offset; + + offset = fhctl_get_offset_table(); + + regs->reg_hp_en = base + offset->offset_hp_en; + regs->reg_clk_con = base + offset->offset_clk_con; + regs->reg_rst_con = base + offset->offset_rst_con; + regs->reg_slope0 = base + offset->offset_slope0; + regs->reg_slope1 = base + offset->offset_slope1; + + regs->reg_cfg = fhx_base + offset->offset_cfg; + regs->reg_updnlmt = fhx_base + offset->offset_updnlmt; + regs->reg_dds = fhx_base + offset->offset_dds; + regs->reg_dvfs = fhx_base + offset->offset_dvfs; + regs->reg_mon = fhx_base + offset->offset_mon; + + fh->pllfh_data = pllfh_data; + fh->lock = &pllfh_lock; + + fh->ops = fhctl_get_ops(); +} + +static bool fhctl_is_supported_and_enabled(const struct mtk_pllfh_data *pllfh) +{ + return pllfh && (pllfh->state.fh_enable == 1); +} + +static struct clk_hw * +mtk_clk_register_pllfh(const struct mtk_pll_data *pll_data, + struct mtk_pllfh_data *pllfh_data, void __iomem *base) +{ + struct clk_hw *hw; + struct mtk_fh *fh; + + fh = kzalloc(sizeof(*fh), GFP_KERNEL); + if (!fh) + return ERR_PTR(-ENOMEM); + + pllfh_init(fh, pllfh_data); + + hw = mtk_clk_register_pll_ops(&fh->clk_pll, pll_data, base, + &mtk_pllfh_ops); + + if (IS_ERR(hw)) + kfree(fh); + else + fhctl_hw_init(fh); + + return hw; +} + +static void mtk_clk_unregister_pllfh(struct clk_hw *hw) +{ + struct mtk_fh *fh; + + if (!hw) + return; + + fh = to_mtk_fh(hw); + + clk_hw_unregister(hw); + kfree(fh); +} + +int mtk_clk_register_pllfhs(struct device_node *node, + const struct mtk_pll_data *plls, int num_plls, + struct mtk_pllfh_data *pllfhs, int num_fhs, + struct clk_hw_onecell_data *clk_data) +{ + void __iomem *base; + int i; + struct clk_hw *hw; + + base = of_iomap(node, 0); + if (!base) { + pr_err("%s(): ioremap failed\n", __func__); + return -EINVAL; + } + + for (i = 0; i < num_plls; i++) { + const struct mtk_pll_data *pll = &plls[i]; + struct mtk_pllfh_data *pllfh; + bool use_fhctl; + + pllfh = get_pllfh_by_id(pllfhs, num_fhs, pll->id); + use_fhctl = fhctl_is_supported_and_enabled(pllfh); + + if (use_fhctl) + hw = mtk_clk_register_pllfh(pll, pllfh, base); + else + hw = mtk_clk_register_pll(pll, base); + + if (IS_ERR(hw)) { + pr_err("Failed to register %s clk %s: %ld\n", + use_fhctl ? "fhpll" : "pll", pll->name, + PTR_ERR(hw)); + goto err; + } + + clk_data->hws[pll->id] = hw; + } + + return 0; + +err: + while (--i >= 0) { + const struct mtk_pll_data *pll = &plls[i]; + struct mtk_pllfh_data *pllfh; + bool use_fhctl; + + pllfh = get_pllfh_by_id(pllfhs, num_fhs, pll->id); + use_fhctl = fhctl_is_supported_and_enabled(pllfh); + + if (use_fhctl) + mtk_clk_unregister_pllfh(clk_data->hws[pll->id]); + else + mtk_clk_unregister_pll(clk_data->hws[pll->id]); + + clk_data->hws[pll->id] = ERR_PTR(-ENOENT); + } + + iounmap(base); + + return PTR_ERR(hw); +} + +void mtk_clk_unregister_pllfhs(const struct mtk_pll_data *plls, int num_plls, + struct mtk_pllfh_data *pllfhs, int num_fhs, + struct clk_hw_onecell_data *clk_data) +{ + void __iomem *base = NULL, *fhctl_base = NULL; + int i; + + if (!clk_data) + return; + + for (i = num_plls; i > 0; i--) { + const struct mtk_pll_data *pll = &plls[i - 1]; + struct mtk_pllfh_data *pllfh; + bool use_fhctl; + + if (IS_ERR_OR_NULL(clk_data->hws[pll->id])) + continue; + + pllfh = get_pllfh_by_id(pllfhs, num_fhs, pll->id); + use_fhctl = fhctl_is_supported_and_enabled(pllfh); + + if (use_fhctl) { + fhctl_base = pllfh->state.base; + mtk_clk_unregister_pllfh(clk_data->hws[pll->id]); + } else { + base = mtk_clk_pll_get_base(clk_data->hws[pll->id], + pll); + mtk_clk_unregister_pll(clk_data->hws[pll->id]); + } + + clk_data->hws[pll->id] = ERR_PTR(-ENOENT); + } + + if (fhctl_base) + iounmap(fhctl_base); + + iounmap(base); +} diff --git a/drivers/clk/mediatek/clk-pllfh.h b/drivers/clk/mediatek/clk-pllfh.h new file mode 100644 index 000000000000..c0a6e1537034 --- /dev/null +++ b/drivers/clk/mediatek/clk-pllfh.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2022 MediaTek Inc. + * Author: Edward-JW Yang + */ + +#ifndef __CLK_PLLFH_H +#define __CLK_PLLFH_H + +#include "clk-pll.h" + +struct fh_pll_state { + void __iomem *base; + u32 fh_enable; + u32 ssc_rate; +}; + +struct fh_pll_data { + int pll_id; + int fh_id; + u32 fhx_offset; + u32 dds_mask; + u32 slope0_value; + u32 slope1_value; + u32 sfstrx_en; + u32 frddsx_en; + u32 fhctlx_en; + u32 tgl_org; + u32 dvfs_tri; + u32 pcwchg; + u32 dt_val; + u32 df_val; + u32 updnlmt_shft; + u32 msk_frddsx_dys; + u32 msk_frddsx_dts; +}; + +struct mtk_pllfh_data { + struct fh_pll_state state; + const struct fh_pll_data data; +}; + +struct fh_pll_regs { + void __iomem *reg_hp_en; + void __iomem *reg_clk_con; + void __iomem *reg_rst_con; + void __iomem *reg_slope0; + void __iomem *reg_slope1; + void __iomem *reg_cfg; + void __iomem *reg_updnlmt; + void __iomem *reg_dds; + void __iomem *reg_dvfs; + void __iomem *reg_mon; +}; + +struct mtk_fh { + struct mtk_clk_pll clk_pll; + struct fh_pll_regs regs; + struct mtk_pllfh_data *pllfh_data; + const struct fh_operation *ops; + spinlock_t *lock; +}; + +struct fh_operation { + int (*hopping)(struct mtk_fh *fh, unsigned int new_dds, + unsigned int postdiv); + int (*ssc_enable)(struct mtk_fh *fh, u32 rate); +}; + +int mtk_clk_register_pllfhs(struct device_node *node, + const struct mtk_pll_data *plls, int num_plls, + struct mtk_pllfh_data *pllfhs, int num_pllfhs, + struct clk_hw_onecell_data *clk_data); + +void mtk_clk_unregister_pllfhs(const struct mtk_pll_data *plls, int num_plls, + struct mtk_pllfh_data *pllfhs, int num_fhs, + struct clk_hw_onecell_data *clk_data); + +void fhctl_parse_dt(const u8 *compatible_node, struct mtk_pllfh_data *pllfhs, + int num_pllfhs); + +#endif /* __CLK_PLLFH_H */ From patchwork Mon Nov 21 12:29:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johnson Wang X-Patchwork-Id: 13050877 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 55DBFC43219 for ; Mon, 21 Nov 2022 13:01:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gTtUIHM+yMWM9LPe/UtrJXEKtn+YXpU7xOJr9fdwsS8=; b=oQj5/TNtn7U4SRp/rOneWBW9cU Y+6aCscTOkVCksXitfFJn0lT35keIlzK7uutmyHFEmg9MfsXC4JGFb7wi8rhF1PbAABdIIP+ylBmT 8rl3yH0ID18LWi8m+RhTumTP098x/2zvZ47aBYnSJbHOgEz3SD8A//i9+YiuqCK+WtClqt5V4W/or TiVJzfTGB/tkPODa2xDrAqj+QGqyNPul3+wOzZT6pvqXxMKLmqGxI4YCz6tOi1nBrQzKcqp3Dxawa do7tpwjwvmZ06RQOO/hFtAxdsVatzlAvJz5vHSZ9xLH57dBDF2M/UXm/7ELiofqalnYiuWO40Wv3h 0ak0AITw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox6Pl-00DvTJ-5s; Mon, 21 Nov 2022 13:00:45 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ox6Ph-00DvSd-Om; Mon, 21 Nov 2022 13:00:43 +0000 X-UUID: f9e06a730977471da8034f9754bbf805-20221121 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=gTtUIHM+yMWM9LPe/UtrJXEKtn+YXpU7xOJr9fdwsS8=; b=MblAdXpzEz+o3DevoKQ+/DR1DmvOFEobhNJD7UvvjeCuqyWiOM/w4qzYljRjD6k1HB1nHnsfeGEKUkgN3Vz8YZn8W0EY5R7650rczg0Wac3b1hGcM/cCnk6+GoDTN+BI+8cFRLWAs/zzctrAjOtbcfNhYxPlIrdqc8muMl/wr+8=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:d44fc25a-158f-4dbd-b537-88ac87964eb0,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:62cd327,CLOUDID:f08a622f-2938-482e-aafd-98d66723b8a9,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:11|1,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: f9e06a730977471da8034f9754bbf805-20221121 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1107755777; Mon, 21 Nov 2022 06:00:38 -0700 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 21 Nov 2022 20:29:59 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 21 Nov 2022 20:29:59 +0800 From: Johnson Wang To: , , , CC: , , , , , , Johnson Wang , Edward-JW Yang Subject: [PATCH v5 4/4] clk: mediatek: Change PLL register API for MT8186 Date: Mon, 21 Nov 2022 20:29:57 +0800 Message-ID: <20221121122957.21611-5-johnson.wang@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221121122957.21611-1-johnson.wang@mediatek.com> References: <20221121122957.21611-1-johnson.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221121_050041_829138_F34C4BA6 X-CRM114-Status: GOOD ( 15.23 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Use mtk_clk_register_pllfhs() to enhance frequency hopping and spread spectrum clocking control for MT8186. Co-developed-by: Edward-JW Yang Signed-off-by: Edward-JW Yang Signed-off-by: Johnson Wang Reviewed-by: AngeloGioacchino Del Regno --- drivers/clk/mediatek/Kconfig | 1 + drivers/clk/mediatek/clk-mt8186-apmixedsys.c | 66 +++++++++++++++++++- 2 files changed, 64 insertions(+), 3 deletions(-) diff --git a/drivers/clk/mediatek/Kconfig b/drivers/clk/mediatek/Kconfig index 38f667eadda3..22e8e79475ee 100644 --- a/drivers/clk/mediatek/Kconfig +++ b/drivers/clk/mediatek/Kconfig @@ -560,6 +560,7 @@ config COMMON_CLK_MT8186 bool "Clock driver for MediaTek MT8186" depends on ARM64 || COMPILE_TEST select COMMON_CLK_MEDIATEK + select COMMON_CLK_MEDIATEK_FHCTL default ARCH_MEDIATEK help This driver supports MediaTek MT8186 clocks. diff --git a/drivers/clk/mediatek/clk-mt8186-apmixedsys.c b/drivers/clk/mediatek/clk-mt8186-apmixedsys.c index e692a2a67ce1..1d673c6278a9 100644 --- a/drivers/clk/mediatek/clk-mt8186-apmixedsys.c +++ b/drivers/clk/mediatek/clk-mt8186-apmixedsys.c @@ -9,6 +9,7 @@ #include "clk-mtk.h" #include "clk-pll.h" +#include "clk-pllfh.h" #define MT8186_PLL_FMAX (3800UL * MHZ) #define MT8186_PLL_FMIN (1500UL * MHZ) @@ -76,6 +77,59 @@ static const struct mtk_pll_data plls[] = { 0, 0, 32, 0x034C, 24, 0x0044, 0x000C, 5, 0x0350), }; +enum fh_pll_id { + FH_ARMPLL_LL, + FH_ARMPLL_BL, + FH_CCIPLL, + FH_MAINPLL, + FH_MMPLL, + FH_TVDPLL, + FH_RESERVE6, + FH_ADSPPLL, + FH_MFGPLL, + FH_NNAPLL, + FH_NNA2PLL, + FH_MSDCPLL, + FH_RESERVE12, + FH_NR_FH, +}; + +#define FH(_pllid, _fhid, _offset) { \ + .data = { \ + .pll_id = _pllid, \ + .fh_id = _fhid, \ + .fhx_offset = _offset, \ + .dds_mask = GENMASK(21, 0), \ + .slope0_value = 0x6003c97, \ + .slope1_value = 0x6003c97, \ + .sfstrx_en = BIT(2), \ + .frddsx_en = BIT(1), \ + .fhctlx_en = BIT(0), \ + .tgl_org = BIT(31), \ + .dvfs_tri = BIT(31), \ + .pcwchg = BIT(31), \ + .dt_val = 0x0, \ + .df_val = 0x9, \ + .updnlmt_shft = 16, \ + .msk_frddsx_dys = GENMASK(23, 20), \ + .msk_frddsx_dts = GENMASK(19, 16), \ + }, \ + } + +static struct mtk_pllfh_data pllfhs[] = { + FH(CLK_APMIXED_ARMPLL_LL, FH_ARMPLL_LL, 0x003C), + FH(CLK_APMIXED_ARMPLL_BL, FH_ARMPLL_BL, 0x0050), + FH(CLK_APMIXED_CCIPLL, FH_CCIPLL, 0x0064), + FH(CLK_APMIXED_MAINPLL, FH_MAINPLL, 0x0078), + FH(CLK_APMIXED_MMPLL, FH_MMPLL, 0x008C), + FH(CLK_APMIXED_TVDPLL, FH_TVDPLL, 0x00A0), + FH(CLK_APMIXED_ADSPPLL, FH_ADSPPLL, 0x00C8), + FH(CLK_APMIXED_MFGPLL, FH_MFGPLL, 0x00DC), + FH(CLK_APMIXED_NNAPLL, FH_NNAPLL, 0x00F0), + FH(CLK_APMIXED_NNA2PLL, FH_NNA2PLL, 0x0104), + FH(CLK_APMIXED_MSDCPLL, FH_MSDCPLL, 0x0118), +}; + static const struct of_device_id of_match_clk_mt8186_apmixed[] = { { .compatible = "mediatek,mt8186-apmixedsys", }, {} @@ -85,13 +139,17 @@ static int clk_mt8186_apmixed_probe(struct platform_device *pdev) { struct clk_hw_onecell_data *clk_data; struct device_node *node = pdev->dev.of_node; + const u8 *fhctl_node = "mediatek,mt8186-fhctl"; int r; clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK); if (!clk_data) return -ENOMEM; - r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data); + fhctl_parse_dt(fhctl_node, pllfhs, ARRAY_SIZE(pllfhs)); + + r = mtk_clk_register_pllfhs(node, plls, ARRAY_SIZE(plls), + pllfhs, ARRAY_SIZE(pllfhs), clk_data); if (r) goto free_apmixed_data; @@ -104,7 +162,8 @@ static int clk_mt8186_apmixed_probe(struct platform_device *pdev) return r; unregister_plls: - mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data); + mtk_clk_unregister_pllfhs(plls, ARRAY_SIZE(plls), pllfhs, + ARRAY_SIZE(pllfhs), clk_data); free_apmixed_data: mtk_free_clk_data(clk_data); return r; @@ -116,7 +175,8 @@ static int clk_mt8186_apmixed_remove(struct platform_device *pdev) struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev); of_clk_del_provider(node); - mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data); + mtk_clk_unregister_pllfhs(plls, ARRAY_SIZE(plls), pllfhs, + ARRAY_SIZE(pllfhs), clk_data); mtk_free_clk_data(clk_data); return 0;