From patchwork Thu Jun 13 12:47:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13696748 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 451BEC27C4F for ; Thu, 13 Jun 2024 12:48:05 +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-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=RPyI9ABYR6Q+dmV6LOS9IcUYJFYMVLH2Poi0/LYPU4A=; b=DH+mlj2k7GYvWtSUa1h+cuVTtT OwNlY/FtWDaNZc30HZA01nuTLK8Io5vnr77SdC3z5UZQTWYSvClwU8Wp1gexh2ul9hklGJYdVkAWc N2XpgYoru5GWYl55ONDc7p1uWJWQ350+LvbuoxUy25dERbuDPLGm1IRMDztl7LO4WLWwyKHR7jk7e EXcSRFL+lO1uV+Av3NB7Hgu5l1CdNlY+iiazlm2Ppczn11JMA/96PvZnwINwAhUpLxapl1tRXabwi 41/VRcNI45I1+NNfPRJzikpIOx8VFeQpKk1+GjgUTy4DnbwvBT3K1YsiVr67MGCZLmJQBYqKDGQrZ hpiGnHTg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHjrq-0000000GZCa-00UF; Thu, 13 Jun 2024 12:47:50 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sHjrj-0000000GZAv-3Cgk for linux-arm-kernel@lists.infradead.org; Thu, 13 Jun 2024 12:47:45 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id EC13161B1F; Thu, 13 Jun 2024 12:47:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 23703C2BBFC; Thu, 13 Jun 2024 12:47:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718282862; bh=ad9x5yMs8ga0zZnmsTn+ucutXDEmn4srbTD18t0nLS0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=itDSX2RnedPjYnzaoyH91+9KKIqhjMs18rPHCEJJTBI4D6CgiOdjRnEF9vKnV1P2/ +hfTxfx2lw7JGcHmnbW0vExyHeOb0XF3CpKSlUV7C89IcnDu1SIvIwBSEa83DJIKVw fQy2A2GzZfqNKVAKCfY8NTxEa6vjev9Be8BWVlgH5mLZ1MGFWzfjcmM4b3JSLwAavs JZURSqvxSUcskYl8UpMM59FJZoiFTzRB1PztCm4Tgzgbwb3YGj7k9GEmJ/HcY33iCb fEVVbuk/J8947XcXNCbmgfUNhYkPXPTj3CNJgUugDKtkzsq4ogezj0hzwS75QAOp/2 Jne8EfSVi7iQA== From: Lorenzo Bianconi To: linux-clk@vger.kernel.org Cc: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, lorenzo.bianconi83@gmail.com, conor@kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, nbd@nbd.name, john@phrozen.org, dd@embedd.com, catalin.marinas@arm.com, will@kernel.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com Subject: [PATCH v3 1/4] dt-bindings: clock: airoha: Add reset support to EN7581 clock binding Date: Thu, 13 Jun 2024 14:47:03 +0200 Message-ID: X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240613_054743_953577_644FC54D X-CRM114-Status: GOOD ( 12.66 ) 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 reset capability to EN7581 device-tree clock binding documentation. Signed-off-by: Lorenzo Bianconi Reviewed-by: Rob Herring (Arm) Reviewed-by: AngeloGioacchino Del Regno --- .../bindings/clock/airoha,en7523-scu.yaml | 25 ++++++- .../dt-bindings/reset/airoha,en7581-reset.h | 66 +++++++++++++++++++ 2 files changed, 90 insertions(+), 1 deletion(-) create mode 100644 include/dt-bindings/reset/airoha,en7581-reset.h diff --git a/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml b/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml index 3f4266637733..84353fd09428 100644 --- a/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml +++ b/Documentation/devicetree/bindings/clock/airoha,en7523-scu.yaml @@ -35,7 +35,7 @@ properties: reg: minItems: 2 - maxItems: 3 + maxItems: 4 "#clock-cells": description: @@ -43,6 +43,10 @@ properties: clocks. const: 1 + '#reset-cells': + description: ID of the controller reset line + const: 1 + required: - compatible - reg @@ -60,6 +64,8 @@ allOf: - description: scu base address - description: misc scu base address + '#reset-cells': false + - if: properties: compatible: @@ -70,6 +76,7 @@ allOf: items: - description: scu base address - description: misc scu base address + - description: reset base address - description: pb scu base address additionalProperties: false @@ -83,3 +90,19 @@ examples: <0x1fb00000 0x1000>; #clock-cells = <1>; }; + + - | + soc { + #address-cells = <2>; + #size-cells = <2>; + + scuclk: clock-controller@1fa20000 { + compatible = "airoha,en7581-scu"; + reg = <0x0 0x1fa20000 0x0 0x400>, + <0x0 0x1fb00000 0x0 0x90>, + <0x0 0x1fb00830 0x0 0x8>, + <0x0 0x1fbe3400 0x0 0xfc>; + #clock-cells = <1>; + #reset-cells = <1>; + }; + }; diff --git a/include/dt-bindings/reset/airoha,en7581-reset.h b/include/dt-bindings/reset/airoha,en7581-reset.h new file mode 100644 index 000000000000..6544a1790b83 --- /dev/null +++ b/include/dt-bindings/reset/airoha,en7581-reset.h @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2024 AIROHA Inc + * Author: Lorenzo Bianconi + */ + +#ifndef __DT_BINDINGS_RESET_CONTROLLER_AIROHA_EN7581_H_ +#define __DT_BINDINGS_RESET_CONTROLLER_AIROHA_EN7581_H_ + +/* RST_CTRL2 */ +#define EN7581_XPON_PHY_RST 0 +#define EN7581_CPU_TIMER2_RST 1 +#define EN7581_HSUART_RST 2 +#define EN7581_UART4_RST 3 +#define EN7581_UART5_RST 4 +#define EN7581_I2C2_RST 5 +#define EN7581_XSI_MAC_RST 6 +#define EN7581_XSI_PHY_RST 7 +#define EN7581_NPU_RST 8 +#define EN7581_I2S_RST 9 +#define EN7581_TRNG_RST 10 +#define EN7581_TRNG_MSTART_RST 11 +#define EN7581_DUAL_HSI0_RST 12 +#define EN7581_DUAL_HSI1_RST 13 +#define EN7581_HSI_RST 14 +#define EN7581_DUAL_HSI0_MAC_RST 15 +#define EN7581_DUAL_HSI1_MAC_RST 16 +#define EN7581_HSI_MAC_RST 17 +#define EN7581_WDMA_RST 18 +#define EN7581_WOE0_RST 19 +#define EN7581_WOE1_RST 20 +#define EN7581_HSDMA_RST 21 +#define EN7581_TDMA_RST 22 +#define EN7581_EMMC_RST 23 +#define EN7581_SOE_RST 24 +#define EN7581_PCIE2_RST 25 +#define EN7581_XFP_MAC_RST 26 +#define EN7581_USB_HOST_P1_RST 27 +#define EN7581_USB_HOST_P1_U3_PHY_RST 28 +/* RST_CTRL1 */ +#define EN7581_PCM1_ZSI_ISI_RST 29 +#define EN7581_FE_PDMA_RST 30 +#define EN7581_FE_QDMA_RST 31 +#define EN7581_PCM_SPIWP_RST 32 +#define EN7581_CRYPTO_RST 33 +#define EN7581_TIMER_RST 34 +#define EN7581_PCM1_RST 35 +#define EN7581_UART_RST 36 +#define EN7581_GPIO_RST 37 +#define EN7581_GDMA_RST 38 +#define EN7581_I2C_MASTER_RST 39 +#define EN7581_PCM2_ZSI_ISI_RST 40 +#define EN7581_SFC_RST 41 +#define EN7581_UART2_RST 42 +#define EN7581_GDMP_RST 43 +#define EN7581_FE_RST 44 +#define EN7581_USB_HOST_P0_RST 45 +#define EN7581_GSW_RST 46 +#define EN7581_SFC2_PCM_RST 47 +#define EN7581_PCIE0_RST 48 +#define EN7581_PCIE1_RST 49 +#define EN7581_CPU_TIMER_RST 50 +#define EN7581_PCIE_HB_RST 51 +#define EN7581_XPON_MAC_RST 52 + +#endif /* __DT_BINDINGS_RESET_CONTROLLER_AIROHA_EN7581_H_ */ From patchwork Thu Jun 13 12:47:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13696747 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 BC184C27C4F for ; Thu, 13 Jun 2024 12:48:01 +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-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=1ouSRU7mMws/JxVL9v+L1JwwIGK0aVNh+HvlYQN2QB8=; 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Thu, 13 Jun 2024 12:47:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718282866; bh=lboWJOELb7i1u/sdo5EvnbtrEmDgZV0z3zT35BMdUfs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I+n346rLl9Gji9k9bBt49hGAzJb9ZMrR3aS8Q6EhoZ7Wx4JVQbrfhvwEax/ULq0ds aqk1u+iheRQDSn2gk4SF8wE9N7wOQUx+jCD90olhMfEeXgYIH1Mve5+f9MGyYulqiP /Y+1PiD6ad+YbsOj6J6yMxmmstWqXSrQAvJqq8XTsXp2BLUim6BgwlLF4iMGKcU83x 35ewuW4Es1nButRGmDHZO1ATt5vI27PB/6xuqX36rCVfjtyGlMH/T2ZO7tw9PE9noG RZ/zX4VZvZTBEFa79JhK5mfVHBMPhcqzulRkyORoZgsyylcaLKZ7DpgHHiIplJxvfH 16jG39IcolpfA== From: Lorenzo Bianconi To: linux-clk@vger.kernel.org Cc: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, lorenzo.bianconi83@gmail.com, conor@kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, nbd@nbd.name, john@phrozen.org, dd@embedd.com, catalin.marinas@arm.com, will@kernel.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com Subject: [PATCH v3 2/4] clk: en7523: Add reset-controller support for EN7581 SoC Date: Thu, 13 Jun 2024 14:47:04 +0200 Message-ID: <20ebe87f8928918ae244677cf85e4e249285759d.1718282056.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240613_054747_531210_CB4E170D X-CRM114-Status: GOOD ( 19.65 ) 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 reset API support to EN7581 clock driver. Tested-by: Zhengping Zhang Signed-off-by: Lorenzo Bianconi Reviewed-by: AngeloGioacchino Del Regno --- drivers/clk/clk-en7523.c | 200 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 197 insertions(+), 3 deletions(-) diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c index ccc394692671..00638714fe08 100644 --- a/drivers/clk/clk-en7523.c +++ b/drivers/clk/clk-en7523.c @@ -5,7 +5,11 @@ #include #include #include +#include #include +#include + +#define RST_NR_PER_BANK 32 #define REG_PCI_CONTROL 0x88 #define REG_PCI_CONTROL_PERSTOUT BIT(29) @@ -40,6 +44,9 @@ #define REG_PCIE_XSI0_SEL_MASK GENMASK(14, 13) #define REG_PCIE_XSI1_SEL_MASK GENMASK(12, 11) +#define REG_RST_CTRL2 0x00 +#define REG_RST_CTRL1 0x04 + struct en_clk_desc { int id; const char *name; @@ -64,8 +71,20 @@ struct en_clk_gate { struct clk_hw hw; }; +struct en_rst_data { + const u16 *bank_ofs; + const u16 *idx_map; + void __iomem *base; + struct reset_controller_dev rcdev; +}; + struct en_clk_soc_data { const struct clk_ops pcie_ops; + struct { + const u16 *bank_ofs; + const u16 *idx_map; + u16 idx_map_nr; + } reset; int (*hw_init)(struct platform_device *pdev, void __iomem *base, void __iomem *np_base); }; @@ -168,6 +187,69 @@ static const struct en_clk_desc en7523_base_clks[] = { } }; +static const u16 en7581_rst_ofs[] = { + REG_RST_CTRL2, + REG_RST_CTRL1, +}; + +static const u16 en7581_rst_map[] = { + /* RST_CTRL2 */ + [EN7581_XPON_PHY_RST] = 0, + [EN7581_CPU_TIMER2_RST] = 2, + [EN7581_HSUART_RST] = 3, + [EN7581_UART4_RST] = 4, + [EN7581_UART5_RST] = 5, + [EN7581_I2C2_RST] = 6, + [EN7581_XSI_MAC_RST] = 7, + [EN7581_XSI_PHY_RST] = 8, + [EN7581_NPU_RST] = 9, + [EN7581_I2S_RST] = 10, + [EN7581_TRNG_RST] = 11, + [EN7581_TRNG_MSTART_RST] = 12, + [EN7581_DUAL_HSI0_RST] = 13, + [EN7581_DUAL_HSI1_RST] = 14, + [EN7581_HSI_RST] = 15, + [EN7581_DUAL_HSI0_MAC_RST] = 16, + [EN7581_DUAL_HSI1_MAC_RST] = 17, + [EN7581_HSI_MAC_RST] = 18, + [EN7581_WDMA_RST] = 19, + [EN7581_WOE0_RST] = 20, + [EN7581_WOE1_RST] = 21, + [EN7581_HSDMA_RST] = 22, + [EN7581_TDMA_RST] = 24, + [EN7581_EMMC_RST] = 25, + [EN7581_SOE_RST] = 26, + [EN7581_PCIE2_RST] = 27, + [EN7581_XFP_MAC_RST] = 28, + [EN7581_USB_HOST_P1_RST] = 29, + [EN7581_USB_HOST_P1_U3_PHY_RST] = 30, + /* RST_CTRL1 */ + [EN7581_PCM1_ZSI_ISI_RST] = RST_NR_PER_BANK + 0, + [EN7581_FE_PDMA_RST] = RST_NR_PER_BANK + 1, + [EN7581_FE_QDMA_RST] = RST_NR_PER_BANK + 2, + [EN7581_PCM_SPIWP_RST] = RST_NR_PER_BANK + 4, + [EN7581_CRYPTO_RST] = RST_NR_PER_BANK + 6, + [EN7581_TIMER_RST] = RST_NR_PER_BANK + 8, + [EN7581_PCM1_RST] = RST_NR_PER_BANK + 11, + [EN7581_UART_RST] = RST_NR_PER_BANK + 12, + [EN7581_GPIO_RST] = RST_NR_PER_BANK + 13, + [EN7581_GDMA_RST] = RST_NR_PER_BANK + 14, + [EN7581_I2C_MASTER_RST] = RST_NR_PER_BANK + 16, + [EN7581_PCM2_ZSI_ISI_RST] = RST_NR_PER_BANK + 17, + [EN7581_SFC_RST] = RST_NR_PER_BANK + 18, + [EN7581_UART2_RST] = RST_NR_PER_BANK + 19, + [EN7581_GDMP_RST] = RST_NR_PER_BANK + 20, + [EN7581_FE_RST] = RST_NR_PER_BANK + 21, + [EN7581_USB_HOST_P0_RST] = RST_NR_PER_BANK + 22, + [EN7581_GSW_RST] = RST_NR_PER_BANK + 23, + [EN7581_SFC2_PCM_RST] = RST_NR_PER_BANK + 25, + [EN7581_PCIE0_RST] = RST_NR_PER_BANK + 26, + [EN7581_PCIE1_RST] = RST_NR_PER_BANK + 27, + [EN7581_CPU_TIMER_RST] = RST_NR_PER_BANK + 28, + [EN7581_PCIE_HB_RST] = RST_NR_PER_BANK + 29, + [EN7581_XPON_MAC_RST] = RST_NR_PER_BANK + 31, +}; + static unsigned int en7523_get_base_rate(void __iomem *base, unsigned int i) { const struct en_clk_desc *desc = &en7523_base_clks[i]; @@ -370,7 +452,7 @@ static int en7581_clk_hw_init(struct platform_device *pdev, void __iomem *pb_base; u32 val; - pb_base = devm_platform_ioremap_resource(pdev, 2); + pb_base = devm_platform_ioremap_resource(pdev, 3); if (IS_ERR(pb_base)) return PTR_ERR(pb_base); @@ -423,6 +505,102 @@ static void en7523_register_clocks(struct device *dev, struct clk_hw_onecell_dat clk_data->num = EN7523_NUM_CLOCKS; } +static int en7523_reset_update(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) +{ + struct en_rst_data *rst_data; + void __iomem *addr; + u32 val; + + rst_data = container_of(rcdev, struct en_rst_data, rcdev); + addr = rst_data->base + rst_data->bank_ofs[id / RST_NR_PER_BANK]; + + val = readl(addr); + if (assert) + val |= BIT(id % RST_NR_PER_BANK); + else + val &= ~BIT(id % RST_NR_PER_BANK); + writel(val, addr); + + return 0; +} + +static int en7523_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return en7523_reset_update(rcdev, id, true); +} + +static int en7523_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return en7523_reset_update(rcdev, id, false); +} + +static int en7523_reset_status(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct en_rst_data *rst_data; + void __iomem *addr; + + rst_data = container_of(rcdev, struct en_rst_data, rcdev); + addr = rst_data->base + rst_data->bank_ofs[id / RST_NR_PER_BANK]; + + return !!(readl(addr) & BIT(id % RST_NR_PER_BANK)); +} + +static int en7523_reset_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + struct en_rst_data *rst_data; + + rst_data = container_of(rcdev, struct en_rst_data, rcdev); + if (reset_spec->args[0] >= rcdev->nr_resets) + return -EINVAL; + + return rst_data->idx_map[reset_spec->args[0]]; +} + +static const struct reset_control_ops en7523_reset_ops = { + .assert = en7523_reset_assert, + .deassert = en7523_reset_deassert, + .status = en7523_reset_status, +}; + +static int en7523_reset_register(struct platform_device *pdev, + const struct en_clk_soc_data *soc_data) +{ + struct device *dev = &pdev->dev; + struct en_rst_data *rst_data; + void __iomem *base; + + /* no reset lines available */ + if (!soc_data->reset.idx_map_nr) + return 0; + + base = devm_platform_ioremap_resource(pdev, 2); + if (IS_ERR(base)) + return PTR_ERR(base); + + rst_data = devm_kzalloc(dev, sizeof(*rst_data), GFP_KERNEL); + if (!rst_data) + return -ENOMEM; + + rst_data->bank_ofs = soc_data->reset.bank_ofs; + rst_data->idx_map = soc_data->reset.idx_map; + rst_data->base = base; + + rst_data->rcdev.nr_resets = soc_data->reset.idx_map_nr; + rst_data->rcdev.of_xlate = en7523_reset_xlate; + rst_data->rcdev.ops = &en7523_reset_ops; + rst_data->rcdev.of_node = dev->of_node; + rst_data->rcdev.of_reset_n_cells = 1; + rst_data->rcdev.owner = THIS_MODULE; + rst_data->rcdev.dev = dev; + + return devm_reset_controller_register(dev, &rst_data->rcdev); +} + static int en7523_clk_probe(struct platform_device *pdev) { struct device_node *node = pdev->dev.of_node; @@ -455,12 +633,23 @@ static int en7523_clk_probe(struct platform_device *pdev) en7523_register_clocks(&pdev->dev, clk_data, base, np_base); r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); - if (r) + if (r) { dev_err(&pdev->dev, "could not register clock provider: %s: %d\n", pdev->name, r); + return r; + } - return r; + r = en7523_reset_register(pdev, soc_data); + if (r) { + dev_err(&pdev->dev, + "could not register reset controller: %s: %d\n", + pdev->name, r); + of_clk_del_provider(node); + return r; + } + + return 0; } static const struct en_clk_soc_data en7523_data = { @@ -479,6 +668,11 @@ static const struct en_clk_soc_data en7581_data = { .unprepare = en7581_pci_unprepare, .disable = en7581_pci_disable, }, + .reset = { + .bank_ofs = en7581_rst_ofs, + .idx_map = en7581_rst_map, + .idx_map_nr = ARRAY_SIZE(en7581_rst_map), + }, .hw_init = en7581_clk_hw_init, }; From patchwork Thu Jun 13 12:47:05 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13696749 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 29C2CC27C75 for ; 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Thu, 13 Jun 2024 12:47:58 +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 1sHjrr-0000000GZD6-0iDY for linux-arm-kernel@lists.infradead.org; Thu, 13 Jun 2024 12:47:52 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id AE86761B1F; Thu, 13 Jun 2024 12:47:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0FBDBC2BBFC; Thu, 13 Jun 2024 12:47:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718282870; bh=XOhLNu1Gw/6tXu5zO2Hw9R364lU9DFB5MHOLEurSqIY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dKuPfWQAaMZlQt005MkwZu20B6WIQNhXHhCu1aBYyceW5tYmOdsh7SINeATbJX6Ju NezndLegtJZQ5eMil/uzICvhcUypsVIbET+lQnZmKsyary1A1fGRoG3FSupP2StWsW CFsuVy2DNWlLSGRTdIAaF84JNMOykrDHVxm8Fxgme3vtaXlCBQMrk+BGHB6EMEYNov f8fiUjzbx3BkE9L58+KkDm7NTsX3du7rSklZ9S6V1ZgN8NVwOGdUV/qpoU0pyfn34J 7UvvmCKB9Ew6s5h0Y2pltqtJ+IZ+RN0B7sRZE1EmjFAf8RdtkJu1Da220XqDXMW+zh BKJ1+yWPnIJ8Q== From: Lorenzo Bianconi To: linux-clk@vger.kernel.org Cc: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, lorenzo.bianconi83@gmail.com, conor@kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, nbd@nbd.name, john@phrozen.org, dd@embedd.com, catalin.marinas@arm.com, will@kernel.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com Subject: [PATCH v3 3/4] clk: en7523: Remove pcie prepare/unpreare callbacks for EN7581 SoC Date: Thu, 13 Jun 2024 14:47:05 +0200 Message-ID: <048cda25962ee98ebab31b374164d78ad09e09bb.1718282056.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240613_054751_313740_DDC97745 X-CRM114-Status: GOOD ( 11.80 ) 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 Get rid of prepare and unpreare callbacks for PCIe clock since they can be modeled as a reset line cosumed by the PCIe driver (pcie-mediatek-gen3) Reviewed-by: AngeloGioacchino Del Regno Tested-by: Zhengping Zhang Signed-off-by: Lorenzo Bianconi --- drivers/clk/clk-en7523.c | 41 ++-------------------------------------- 1 file changed, 2 insertions(+), 39 deletions(-) diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c index 00638714fe08..ad8a4d1ad62c 100644 --- a/drivers/clk/clk-en7523.c +++ b/drivers/clk/clk-en7523.c @@ -361,9 +361,8 @@ static struct clk_hw *en7523_register_pcie_clk(struct device *dev, cg->base = np_base; cg->hw.init = &init; - if (init.ops->disable) - init.ops->disable(&cg->hw); - init.ops->unprepare(&cg->hw); + if (init.ops->unprepare) + init.ops->unprepare(&cg->hw); if (clk_hw_register(dev, &cg->hw)) return NULL; @@ -381,23 +380,6 @@ static int en7581_pci_is_enabled(struct clk_hw *hw) return (val & mask) == mask; } -static int en7581_pci_prepare(struct clk_hw *hw) -{ - struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw); - void __iomem *np_base = cg->base; - u32 val, mask; - - mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 | - REG_RESET_CONTROL_PCIEHB; - val = readl(np_base + REG_RESET_CONTROL1); - writel(val & ~mask, np_base + REG_RESET_CONTROL1); - val = readl(np_base + REG_RESET_CONTROL2); - writel(val & ~REG_RESET2_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2); - usleep_range(5000, 10000); - - return 0; -} - static int en7581_pci_enable(struct clk_hw *hw) { struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw); @@ -414,23 +396,6 @@ static int en7581_pci_enable(struct clk_hw *hw) return 0; } -static void en7581_pci_unprepare(struct clk_hw *hw) -{ - struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw); - void __iomem *np_base = cg->base; - u32 val, mask; - - mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2 | - REG_RESET_CONTROL_PCIEHB; - val = readl(np_base + REG_RESET_CONTROL1); - writel(val | mask, np_base + REG_RESET_CONTROL1); - mask = REG_RESET_CONTROL_PCIE1 | REG_RESET_CONTROL_PCIE2; - writel(val | mask, np_base + REG_RESET_CONTROL1); - val = readl(np_base + REG_RESET_CONTROL2); - writel(val | REG_RESET_CONTROL_PCIE2, np_base + REG_RESET_CONTROL2); - msleep(100); -} - static void en7581_pci_disable(struct clk_hw *hw) { struct en_clk_gate *cg = container_of(hw, struct en_clk_gate, hw); @@ -663,9 +628,7 @@ static const struct en_clk_soc_data en7523_data = { static const struct en_clk_soc_data en7581_data = { .pcie_ops = { .is_enabled = en7581_pci_is_enabled, - .prepare = en7581_pci_prepare, .enable = en7581_pci_enable, - .unprepare = en7581_pci_unprepare, .disable = en7581_pci_disable, }, .reset = { From patchwork Thu Jun 13 12:47:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13696750 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 41AA3C27C4F for ; Thu, 13 Jun 2024 12:48:15 +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-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=FE2I+ok3uKCOwmVddc0bcXSS9e2kqrWgkirI8+vOjPQ=; 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Thu, 13 Jun 2024 12:47:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718282874; bh=S6lUckfLeB0DNVN+ciQdJA86RnrUZzC0QD5OQ0XRMQw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TRXBKenEX9+k3PReXyruTVjZJAnBvKrryeGC52ULGTyVxKxgpjDQnQyoBs/YpfVcE CuBWgoEWMegQznKdP+rY6waDKmwjIvjbrVe8wOKmiK60mDqWIOLB7HkFcCvhyc/Se5 8LaJJbBXf07A+CiJgaYnFFQjMhDjG6WTDCqqX/SfAKsbYXSqZhcMId7pDbDjMsLiKJ ge+Krm3tFxCnCfiowjrJGo8uxp01a1mH+O0okS2shlmoJAJ+sdyeqPE1E9TSEv6CZ5 lofTNK1vlZQP4xhNHqBqu3eaXCKKL3lGWQGrVMHwr7tyXpYeSDJUCZjLj8gNMWKCxf /WfXizPV5vjaQ== From: Lorenzo Bianconi To: linux-clk@vger.kernel.org Cc: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, lorenzo.bianconi83@gmail.com, conor@kernel.org, linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, devicetree@vger.kernel.org, nbd@nbd.name, john@phrozen.org, dd@embedd.com, catalin.marinas@arm.com, will@kernel.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com Subject: [PATCH v3 4/4] clk: en7523: remove pcie reset open drain configuration for EN7581 Date: Thu, 13 Jun 2024 14:47:06 +0200 Message-ID: X-Mailer: git-send-email 2.45.1 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240613_054757_374249_95C3547B X-CRM114-Status: GOOD ( 11.98 ) 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 PCIE reset open drain configuration will be managed by pinctrl driver. Signed-off-by: Lorenzo Bianconi Reviewed-by: AngeloGioacchino Del Regno --- drivers/clk/clk-en7523.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/drivers/clk/clk-en7523.c b/drivers/clk/clk-en7523.c index ad8a4d1ad62c..9757023601c5 100644 --- a/drivers/clk/clk-en7523.c +++ b/drivers/clk/clk-en7523.c @@ -37,8 +37,6 @@ #define REG_PCIE1_MEM_MASK 0x0c #define REG_PCIE2_MEM 0x10 #define REG_PCIE2_MEM_MASK 0x14 -#define REG_PCIE_RESET_OPEN_DRAIN 0x018c -#define REG_PCIE_RESET_OPEN_DRAIN_MASK GENMASK(2, 0) #define REG_NP_SCU_PCIC 0x88 #define REG_NP_SCU_SSTR 0x9c #define REG_PCIE_XSI0_SEL_MASK GENMASK(14, 13) @@ -85,8 +83,7 @@ struct en_clk_soc_data { const u16 *idx_map; u16 idx_map_nr; } reset; - int (*hw_init)(struct platform_device *pdev, void __iomem *base, - void __iomem *np_base); + int (*hw_init)(struct platform_device *pdev, void __iomem *np_base); }; static const u32 gsw_base[] = { 400000000, 500000000 }; @@ -411,7 +408,6 @@ static void en7581_pci_disable(struct clk_hw *hw) } static int en7581_clk_hw_init(struct platform_device *pdev, - void __iomem *base, void __iomem *np_base) { void __iomem *pb_base; @@ -434,10 +430,6 @@ static int en7581_clk_hw_init(struct platform_device *pdev, writel(0x28000000, pb_base + REG_PCIE2_MEM); writel(0xfc000000, pb_base + REG_PCIE2_MEM_MASK); - val = readl(base + REG_PCIE_RESET_OPEN_DRAIN); - writel(val | REG_PCIE_RESET_OPEN_DRAIN_MASK, - base + REG_PCIE_RESET_OPEN_DRAIN); - return 0; } @@ -584,7 +576,7 @@ static int en7523_clk_probe(struct platform_device *pdev) soc_data = device_get_match_data(&pdev->dev); if (soc_data->hw_init) { - r = soc_data->hw_init(pdev, base, np_base); + r = soc_data->hw_init(pdev, np_base); if (r) return r; }