From patchwork Tue Sep 3 21:39:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13789343 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 7A3ABCD37B1 for ; Tue, 3 Sep 2024 21:45:06 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YQYpshO2ewNr1tRZCltnRj5TH+vMwN50VReMJ+CoI30=; b=tukrHdy9IZJK5S/H/1rhsbduBv 8zMXqB5eyPaQ0LjWFHp7tWvqVZdBue12hD7Exqj8TY94HtXy8zwWIytYn5Y86POs5Y2BhH43Ye1qS k3DHQkbKNzIQo6NbPIMFCyZH67Mi2iQwMn/fuhGHypUFbV4r5nJt+OnWYZi7D8PmfghJrDpkysMDi 9825PIqJdAG0krZLrgQbPblC6tS9F1cdU3drgkCboByrPgSRhyYWJmgEQVWXvBBuTiVzm49qfzin9 rrOYgZMeAmEfjyArGcFa0+6g/uhFRI7RXR7zlJjO0W/rCeYkK/i7w5BgPMbYWGdSwTNxOj7LcCCds gtRARqfg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1slbKa-000000022UW-3ekI; Tue, 03 Sep 2024 21:44:56 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1slbGA-000000021Tw-2dkT for linux-arm-kernel@lists.infradead.org; Tue, 03 Sep 2024 21:40:24 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id AC28F5C566E; Tue, 3 Sep 2024 21:40:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EDCDC4CEC5; Tue, 3 Sep 2024 21:40:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725399621; bh=Ph06Tg/4q5VIk3xDmgEvYK5TF6r7nuySH269VXi+Mc0=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=kp+Tv5zrsKPvMIjlpMQuG9FsxZXiiA2jDXRtG3s1hlGIHRaD2MGjcBwxHkX+xEveA Mrj820pWOwai1XbL08PoA3WaZKU81HHGQJl2B2yzj4Y/ze/HS6BYzkKnRSxoU6e7N5 YbUaFi0BRfO4mV7KPIlFLEpoMtW0x0JuTCx6Qm/Y083LE3c8G0IGCWL+WsSPzIbsOf nuAQLJZc3lG1ejWpmeo7vrI+xThU143W2sFAn89XseTze681iPQCEg1uQaA5+Ys5BR 9ORIwYQkD8fOD4Oobe6AZz3efA3VspSe/a8ZeXmmJKL69Kh5mmdM5YUw+4rATzPM5w uBdtFlZjBRuIg== From: Lorenzo Bianconi Date: Tue, 03 Sep 2024 23:39:48 +0200 Subject: [PATCH v2 4/7] clk: en7523: introduce chip_scu regmap MIME-Version: 1.0 Message-Id: <20240903-clk-en7581-syscon-v2-4-86fbe2fc15c3@kernel.org> References: <20240903-clk-en7581-syscon-v2-0-86fbe2fc15c3@kernel.org> In-Reply-To: <20240903-clk-en7581-syscon-v2-0-86fbe2fc15c3@kernel.org> To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Felix Fietkau , Philipp Zabel Cc: linux-clk@vger.kernel.org, devicetree@vger.kernel.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com, linux-arm-kernel@lists.infradead.org, lorenzo.bianconi83@gmail.com, ansuelsmth@gmail.com, Lorenzo Bianconi X-Mailer: b4 0.14.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240903_144022_800141_CB2FD08E X-CRM114-Status: GOOD ( 17.10 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce chip_scu regmap pointer since EN7581 SoC will access chip-scu memory area via a syscon node. Remove first memory region mapping for EN7581 SoC. This patch does not introduce any backward incompatibility since the dts for EN7581 SoC is not upstream yet. Signed-off-by: Lorenzo Bianconi --- drivers/clk/clk-en7523.c | 81 ++++++++++++++++++++++++++++++++++++------------ 1 file changed, 61 insertions(+), 20 deletions(-) diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c index da112c9fe8ef..7f83cbce01ee 100644 --- a/drivers/clk/clk-en7523.c +++ b/drivers/clk/clk-en7523.c @@ -3,8 +3,10 @@ #include #include #include +#include #include #include +#include #include #include #include @@ -247,15 +249,11 @@ static const u16 en7581_rst_map[] = { [EN7581_XPON_MAC_RST] = RST_NR_PER_BANK + 31, }; -static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i) +static u32 en7523_get_base_rate(const struct en_clk_desc *desc, u32 val) { - const struct en_clk_desc *desc = &en7523_base_clks[i]; - u32 val; - if (!desc->base_bits) return desc->base_value; - val = readl(base + desc->base_reg); val >>= desc->base_shift; val &= (1 << desc->base_bits) - 1; @@ -265,16 +263,11 @@ static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i) return desc->base_values[val]; } -static u32 en7523_get_div(void __iomem *base, int i) +static u32 en7523_get_div(const struct en_clk_desc *desc, u32 val) { - const struct en_clk_desc *desc = &en7523_base_clks[i]; - u32 reg, val; - if (!desc->div_bits) return 1; - reg = desc->div_reg ? desc->div_reg : desc->base_reg; - val = readl(base + reg); val >>= desc->div_shift; val &= (1 << desc->div_bits) - 1; @@ -416,9 +409,12 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) { const struct en_clk_desc *desc = &en7523_base_clks[i]; + u32 reg = desc->div_reg ? desc->div_reg : desc->base_reg; + u32 val = readl(base + desc->base_reg); - rate = en7523_get_base_rate(base, i); - rate /= en7523_get_div(base, i); + rate = en7523_get_base_rate(desc, val); + val = readl(base + reg); + rate /= en7523_get_div(desc, val); hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate); if (IS_ERR(hw)) { @@ -454,21 +450,66 @@ static int en7523_clk_hw_init(struct platform_device *pdev, return 0; } +static void en7581_register_clocks(struct device *dev, struct clk_hw_onecell_data *clk_data, + struct regmap *map, void __iomem *base) +{ + struct clk_hw *hw; + u32 rate; + int i; + + for (i = 0; i < ARRAY_SIZE(en7523_base_clks); i++) { + const struct en_clk_desc *desc = &en7523_base_clks[i]; + u32 val, reg = desc->div_reg ? desc->div_reg : desc->base_reg; + int err; + + err = regmap_read(map, desc->base_reg, &val); + if (err) { + pr_err("Failed reading fixed clk rate %s: %d\n", + desc->name, err); + continue; + } + rate = en7523_get_base_rate(desc, val); + + err = regmap_read(map, reg, &val); + if (err) { + pr_err("Failed reading fixed clk div %s: %d\n", + desc->name, err); + continue; + } + rate /= en7523_get_div(desc, val); + + hw = clk_hw_register_fixed_rate(dev, desc->name, NULL, 0, rate); + if (IS_ERR(hw)) { + pr_err("Failed to register clk %s: %ld\n", + desc->name, PTR_ERR(hw)); + continue; + } + + clk_data->hws[desc->id] = hw; + } + + hw = en7523_register_pcie_clk(dev, base); + clk_data->hws[EN7523_CLK_PCIE] = hw; + + clk_data->num = EN7523_NUM_CLOCKS; +} + static int en7581_clk_hw_init(struct platform_device *pdev, struct clk_hw_onecell_data *clk_data) { - void __iomem *base, *np_base; + void __iomem *np_base; + struct regmap *map; u32 val; - base = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(base)) - return PTR_ERR(base); + map = syscon_regmap_lookup_by_compatible("airoha,en7581-chip-scu"); + if (IS_ERR(map)) + return PTR_ERR(map); - np_base = devm_platform_ioremap_resource(pdev, 1); + np_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(np_base)) return PTR_ERR(np_base); - en7523_register_clocks(&pdev->dev, clk_data, base, np_base); + en7581_register_clocks(&pdev->dev, clk_data, map, np_base); val = readl(np_base + REG_NP_SCU_SSTR); val &= ~(REG_PCIE_XSI0_SEL_MASK | REG_PCIE_XSI1_SEL_MASK); @@ -545,7 +586,7 @@ static int en7523_reset_register(struct platform_device *pdev, if (!soc_data->reset.idx_map_nr) return 0; - base = devm_platform_ioremap_resource(pdev, 2); + base = devm_platform_ioremap_resource(pdev, 1); if (IS_ERR(base)) return PTR_ERR(base);