From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from rtits2.realtek.com.tw (rtits2.realtek.com [211.75.126.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F1A23749E3; Wed, 12 Aug 2026 02:00:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=211.75.126.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786500046; cv=none; b=BHIosf1XqbqEEnjLhrE3o9MsqOYDIZdNf4jAdK4hE5lgzkl0hnpKYYte3ja1SlhetG+8KVhmjBIbjA249V4N41hL5PkO1UCbtdvhqnj+N1nkoanKJv48bDkPt4AEqqSlmyKT+13SwEvpiiP4qFIMhNKQ4zOtzPXthOInZS8wDjE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786500046; c=relaxed/simple; bh=W9HvHDOdd7Wqyz0jkx1obougkGbN6XQo3WMYJhYOUzQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tfRyVa8cbsfL+gxkwwXX6KtadGXTckfX6dh1IFg1c37In8mGOhA7OLA/YsD2KIBbcx8MB+RAKKC/Y5dJVAiXJEy1Y0MPcX8psP5eWvtNd/EeVYWPv2f4QVQNzfxBBmC9nvqYnpL359WR5Dnue1MfbrAoEDJcR8OayeGP4QbUMrM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com; spf=pass smtp.mailfrom=realtek.com; dkim=pass (2048-bit key) header.d=realtek.com header.i=@realtek.com header.b=IrRJDo49; arc=none smtp.client-ip=211.75.126.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=realtek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=realtek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=realtek.com header.i=@realtek.com header.b="IrRJDo49" X-SpamFilter-By: ArmorX SpamTrap 5.80 with qID 67C20HnF43195425, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=realtek.com; s=dkim; t=1786500017; bh=1Wg/Sqbqyucwn9FlZ2PxqD63rprknpvTA+dmj79H/lE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type; b=IrRJDo49PZ8RtxdzrI2LFc+NOj+GkeMSW+yYvhYtHEO96WBbMNkPNUFrW9bfzv0+U B1S2FJS53DB+Uds6NdGU2H5cuRL6FbH5VTa0eKUFgpq1b9mAmaJf1LusLyI6I+PV54 ZldWsXK+dYr+X8j+VeeuP2AUJYEBhl8Wq2R3jFkr2OK20mM9NE6l52Xw7+9eb/H8II 4F7cT30KDstXwFHiY3N0KBoDmt29Sr65jVi+l1IeddTJzQIVlsOzbHPN4Ds5eQ70bq t0himSpj76z9D7LArIXyWQNFqRcl1l2pRw8filp5SdUh1fyh+MkXi8TErflgNDJH27 1vLXnCgLfn9FA== Received: from mail.realtek.com (rtkexhmbs04.realtek.com.tw[10.21.1.54]) by rtits2.realtek.com.tw (8.15.2/3.29/5.94) with ESMTPS id 67C20HnF43195425 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 12 Aug 2026 10:00:17 +0800 Received: from RTKEXHMBS01.realtek.com.tw (172.21.6.40) by RTKEXHMBS04.realtek.com.tw (10.21.1.54) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.43; Wed, 12 Aug 2026 10:00:17 +0800 Received: from RTKEXHMBS04.realtek.com.tw (10.21.1.54) by RTKEXHMBS01.realtek.com.tw (172.21.6.40) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.43; Wed, 12 Aug 2026 10:00:16 +0800 Received: from cn1dhc-k02 (172.21.252.101) by RTKEXHMBS04.realtek.com.tw (10.21.1.54) with Microsoft SMTP Server id 15.2.2562.43 via Frontend Transport; Wed, 12 Aug 2026 10:00:16 +0800 From: Yu-Chun Lin To: , , , , , , , , , CC: , , , , , , , , Subject: [PATCH v13 10/11] clk: realtek: Add RTD1625-ISO clock controller driver Date: Wed, 12 Aug 2026 10:00:08 +0800 Message-ID: <20260812020009.3480538-11-eleanor.lin@realtek.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260812020009.3480538-1-eleanor.lin@realtek.com> References: <20260812020009.3480538-1-eleanor.lin@realtek.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain From: Cheng-Yu Lee Add support for the ISO (Isolation) domain clock controller on the Realtek RTD1625 SoC. This controller manages clocks in the always-on power domain, ensuring essential services remain functional even when the main system power is gated. Because the reset controller shares the same register space with this ISO clock controller, this driver also acts as the parent device and registers the reset controller as an auxiliary device on the auxiliary bus. Reviewed-by: Brian Masney Signed-off-by: Cheng-Yu Lee Co-developed-by: Yu-Chun Lin Signed-off-by: Yu-Chun Lin --- Changes in v13: - Add Reviewed-by tag from Brian. --- drivers/clk/realtek/Makefile | 1 + drivers/clk/realtek/clk-rtd1625-iso.c | 142 ++++++++++++++++++++++++++ 2 files changed, 143 insertions(+) create mode 100644 drivers/clk/realtek/clk-rtd1625-iso.c diff --git a/drivers/clk/realtek/Makefile b/drivers/clk/realtek/Makefile index 52d5d1b18104..e8d9017098d3 100644 --- a/drivers/clk/realtek/Makefile +++ b/drivers/clk/realtek/Makefile @@ -9,3 +9,4 @@ clk-rtk-y += freq_table.o clk-rtk-$(CONFIG_RTK_CLK_PLL_MMC) += clk-pll-mmc.o obj-$(CONFIG_CLK_RTD1625) += clk-rtd1625-crt.o +obj-$(CONFIG_CLK_RTD1625) += clk-rtd1625-iso.o diff --git a/drivers/clk/realtek/clk-rtd1625-iso.c b/drivers/clk/realtek/clk-rtd1625-iso.c new file mode 100644 index 000000000000..6025c148adf8 --- /dev/null +++ b/drivers/clk/realtek/clk-rtd1625-iso.c @@ -0,0 +1,142 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024-2026 Realtek Semiconductor Corporation + * Author: Cheng-Yu Lee + */ + +#include +#include +#include +#include +#include +#include +#include "clk-regmap-gate.h" + +#define RTD1625_ISO_CLK_MAX 19 +#define RTD1625_ISO_S_CLK_MAX 5 + +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_p4, 0, 0x4, 0, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_p3, 0, 0x4, 1, 0); +static RTK_CLK_REGMAP_GATE(clk_en_misc_cec0, "clk_en_misc", 0, 0x4, 2, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_cbusrx_sys, 0, 0x4, 3, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_cbustx_sys, 0, 0x4, 4, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_cbus_sys, 0, 0x4, 5, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_cbus_osc, 0, 0x4, 6, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_i2c0, 0, 0x4, 9, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_i2c1, 0, 0x4, 10, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_etn_250m, 0, 0x4, 11, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_etn_sys, 0, 0x4, 12, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_drd, 0, 0x4, 13, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_host, 0, 0x4, 14, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_u3_host, 0, 0x4, 15, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_usb, 0, 0x4, 16, 0); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_vtc, 0, 0x4, 17, 0); +static RTK_CLK_REGMAP_GATE(clk_en_misc_vfd, "clk_en_misc", 0, 0x4, 18, 0); + +static struct rtk_clk_regmap *rtd1625_iso_clk_regmap_list[] = { + &clk_en_usb_p4.clkr, + &clk_en_usb_p3.clkr, + &clk_en_misc_cec0.clkr, + &clk_en_cbusrx_sys.clkr, + &clk_en_cbustx_sys.clkr, + &clk_en_cbus_sys.clkr, + &clk_en_cbus_osc.clkr, + &clk_en_i2c0.clkr, + &clk_en_i2c1.clkr, + &clk_en_etn_250m.clkr, + &clk_en_etn_sys.clkr, + &clk_en_usb_drd.clkr, + &clk_en_usb_host.clkr, + &clk_en_usb_u3_host.clkr, + &clk_en_usb.clkr, + &clk_en_vtc.clkr, + &clk_en_misc_vfd.clkr, +}; + +static struct clk_hw_onecell_data rtd1625_iso_clk_data = { + .num = RTD1625_ISO_CLK_MAX, + .hws = { + [RTD1625_ISO_CLK_EN_USB_P4] = &__rtk_clk_regmap_gate_hw(&clk_en_usb_p4), + [RTD1625_ISO_CLK_EN_USB_P3] = &__rtk_clk_regmap_gate_hw(&clk_en_usb_p3), + [RTD1625_ISO_CLK_EN_MISC_CEC0] = &__rtk_clk_regmap_gate_hw(&clk_en_misc_cec0), + [RTD1625_ISO_CLK_EN_CBUSRX_SYS] = &__rtk_clk_regmap_gate_hw(&clk_en_cbusrx_sys), + [RTD1625_ISO_CLK_EN_CBUSTX_SYS] = &__rtk_clk_regmap_gate_hw(&clk_en_cbustx_sys), + [RTD1625_ISO_CLK_EN_CBUS_SYS] = &__rtk_clk_regmap_gate_hw(&clk_en_cbus_sys), + [RTD1625_ISO_CLK_EN_CBUS_OSC] = &__rtk_clk_regmap_gate_hw(&clk_en_cbus_osc), + [RTD1625_ISO_CLK_EN_I2C0] = &__rtk_clk_regmap_gate_hw(&clk_en_i2c0), + [RTD1625_ISO_CLK_EN_I2C1] = &__rtk_clk_regmap_gate_hw(&clk_en_i2c1), + [RTD1625_ISO_CLK_EN_ETN_250M] = &__rtk_clk_regmap_gate_hw(&clk_en_etn_250m), + [RTD1625_ISO_CLK_EN_ETN_SYS] = &__rtk_clk_regmap_gate_hw(&clk_en_etn_sys), + [RTD1625_ISO_CLK_EN_USB_DRD] = &__rtk_clk_regmap_gate_hw(&clk_en_usb_drd), + [RTD1625_ISO_CLK_EN_USB_HOST] = &__rtk_clk_regmap_gate_hw(&clk_en_usb_host), + [RTD1625_ISO_CLK_EN_USB_U3_HOST] = &__rtk_clk_regmap_gate_hw(&clk_en_usb_u3_host), + [RTD1625_ISO_CLK_EN_USB] = &__rtk_clk_regmap_gate_hw(&clk_en_usb), + [RTD1625_ISO_CLK_EN_VTC] = &__rtk_clk_regmap_gate_hw(&clk_en_vtc), + [RTD1625_ISO_CLK_EN_MISC_VFD] = &__rtk_clk_regmap_gate_hw(&clk_en_misc_vfd), + }, +}; + +static const struct rtk_clk_desc rtd1625_iso_desc = { + .clk_data = &rtd1625_iso_clk_data, + .clks = rtd1625_iso_clk_regmap_list, + .num_clks = ARRAY_SIZE(rtd1625_iso_clk_regmap_list), + .aux_name = "rtd1625_iso_rst", +}; + +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_irda, 0, 0x4, 6, 1); +static RTK_CLK_REGMAP_GATE_NO_PARENT(clk_en_ur10, 0, 0x4, 8, 1); + +static struct rtk_clk_regmap *rtd1625_iso_s_clk_regmap_list[] = { + &clk_en_irda.clkr, + &clk_en_ur10.clkr, +}; + +static struct clk_hw_onecell_data rtd1625_iso_s_clk_data = { + .num = RTD1625_ISO_S_CLK_MAX, + .hws = { + [RTD1625_ISO_S_CLK_EN_IRDA] = &__rtk_clk_regmap_gate_hw(&clk_en_irda), + [RTD1625_ISO_S_CLK_EN_UR10] = &__rtk_clk_regmap_gate_hw(&clk_en_ur10), + }, +}; + +static const struct rtk_clk_desc rtd1625_iso_s_desc = { + .clk_data = &rtd1625_iso_s_clk_data, + .clks = rtd1625_iso_s_clk_regmap_list, + .num_clks = ARRAY_SIZE(rtd1625_iso_s_clk_regmap_list), + .aux_name = "rtd1625_iso_s_rst", +}; + +static int rtd1625_iso_probe(struct platform_device *pdev) +{ + const struct rtk_clk_desc *desc; + + desc = device_get_match_data(&pdev->dev); + if (!desc) + return -EINVAL; + + return rtk_clk_probe(pdev, desc); +} + +static const struct of_device_id rtd1625_iso_match[] = { + { .compatible = "realtek,rtd1625-iso-clk", .data = &rtd1625_iso_desc }, + { .compatible = "realtek,rtd1625-iso-s-clk", .data = &rtd1625_iso_s_desc }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rtd1625_iso_match); + +static struct platform_driver rtd1625_iso_driver = { + .probe = rtd1625_iso_probe, + .remove = rtk_clk_remove, + .driver = { + .name = "rtk-rtd1625-iso-clk", + .of_match_table = rtd1625_iso_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(rtd1625_iso_driver); + +MODULE_DESCRIPTION("Realtek RTD1625 ISO Clock Controller Driver"); +MODULE_AUTHOR("Cheng-Yu Lee "); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("CLK_REALTEK"); -- 2.43.0