From nobody Mon Feb 9 05:41:54 2026 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 78CF62DAFA4; Thu, 22 Jan 2026 11:09:16 +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=1769080160; cv=none; b=eHf8glxzo2QVUx+KIN6r2NuoYC0ckL1UMmk8rBnfaSJqM5f+lvRii2IFW9/lGxbASGyfBoy2vTIDSDzsKSG1JjJTr+GSOA4ROaBs81+4N4f66+rRMBbsa3oLY7gFkB59qJ9bv4Gv5u4qFD0p+3Nqc4qw4+x8CaXQ1Js4eDX66wk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769080160; c=relaxed/simple; bh=IsWn/3vOPCYRknA0LMIG68fisubCVp3CsGFIEpdrZu8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=ad59Ny2LwT14zvP3qDTCCq5uCs/X/wNJmFSN6z/O+Cxv5e0ao24T7lBaubdHtgadd6xsb4lbBaI8kJI8BAYnU7C4ZLAVClFpfSlaNCfxvqCDttKfMQgAu/EkyNaD7CHDfgwrxaSFRxD11zYgGQyW+wFAH5sYAu5rMluGe//ldUU= 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=XYIu4iv+; 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="XYIu4iv+" X-SpamFilter-By: ArmorX SpamTrap 5.80 with qID 60MB90vlC913389, This message is accepted by code: ctloc85258 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=realtek.com; s=dkim; t=1769080140; bh=Mx116ntBY9w2btL+Wb4TvqmggYWOjR5VB3+xYYaVSLE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding:Content-Type; b=XYIu4iv+6ifkwD91ZlNPmdws0uyW7jXoinhCsMAJZ/p2Ccn1nGI/0VO2fST76EwcW /pMtsxSa+HvZD8wibH+UgCZGwTYpZv2FCZbPGJTknjUjY10ms9SpMQ3us6Z+7SJP9n Q3Ct9fd/r3G8VycFpAgnlKi6wYb/siDn5yCQYNO1X4n4WQL8KBByouN3qoxRRDZegD X7N2XcNaIcitq4EKf5L/OfuPaSSE0cvTGT5v6GB0Ko8JPgcQBFP/tizMm1ZDxK8Ssr /f3IE/jI+baXlCqwUMHuVV3/ZzUVUEgju4AMlkms7fWFeJhs7suj97ZAElmr4x3oAY Etvo7THCkKMcA== Received: from mail.realtek.com (rtkexhmbs04.realtek.com.tw[10.21.1.54]) by rtits2.realtek.com.tw (8.15.2/3.21/5.94) with ESMTPS id 60MB90vlC913389 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 22 Jan 2026 19:09:00 +0800 Received: from RTKEXHMBS03.realtek.com.tw (10.21.1.53) 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 15.2.1748.10; Thu, 22 Jan 2026 19:09:00 +0800 Received: from cn1dhc-k02 (172.21.252.101) by RTKEXHMBS03.realtek.com.tw (10.21.1.53) with Microsoft SMTP Server id 15.2.1748.10 via Frontend Transport; Thu, 22 Jan 2026 19:09:00 +0800 From: Yu-Chun Lin To: , , , , , , , CC: , , , , , , Subject: [PATCH v3 9/9] clk: realtek: Add RTD1625-ISO clock controller driver Date: Thu, 22 Jan 2026 19:08:57 +0800 Message-ID: <20260122110857.12995-10-eleanor.lin@realtek.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260122110857.12995-1-eleanor.lin@realtek.com> References: <20260122110857.12995-1-eleanor.lin@realtek.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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. Signed-off-by: Cheng-Yu Lee Co-developed-by: Yu-Chun Lin Signed-off-by: Yu-Chun Lin --- Changes in v3: - None. --- drivers/clk/realtek/Makefile | 1 + drivers/clk/realtek/clk-rtd1625-iso.c | 153 ++++++++++++++++++++++++++ 2 files changed, 154 insertions(+) create mode 100644 drivers/clk/realtek/clk-rtd1625-iso.c diff --git a/drivers/clk/realtek/Makefile b/drivers/clk/realtek/Makefile index 3cda1e600172..e90fce42a85e 100644 --- a/drivers/clk/realtek/Makefile +++ b/drivers/clk/realtek/Makefile @@ -11,3 +11,4 @@ clk-rtk-y +=3D reset.o =20 clk-rtk-$(CONFIG_RTK_CLK_PLL_MMC) +=3D clk-pll-mmc.o obj-$(CONFIG_COMMON_CLK_RTD1625) +=3D clk-rtd1625-crt.o +obj-$(CONFIG_COMMON_CLK_RTD1625) +=3D clk-rtd1625-iso.o diff --git a/drivers/clk/realtek/clk-rtd1625-iso.c b/drivers/clk/realtek/cl= k-rtd1625-iso.c new file mode 100644 index 000000000000..fe268745812e --- /dev/null +++ b/drivers/clk/realtek/clk-rtd1625-iso.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2024 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 CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_p4, 0, 0x08c, 0, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_p3, 0, 0x08c, 1, 0); +static CLK_REGMAP_GATE(clk_en_misc_cec0, "clk_en_misc", 0, 0x08c, 2, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_cbusrx_sys, 0, 0x08c, 3, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_cbustx_sys, 0, 0x08c, 4, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_cbus_sys, 0, 0x08c, 5, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_cbus_osc, 0, 0x08c, 6, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_i2c0, 0, 0x08c, 9, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_i2c1, 0, 0x08c, 10, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_etn_250m, 0, 0x08c, 11, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_etn_sys, 0, 0x08c, 12, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_drd, 0, 0x08c, 13, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_host, 0, 0x08c, 14, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_usb_u3_host, 0, 0x08c, 15, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_usb, 0, 0x08c, 16, 0); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_vtc, 0, 0x08c, 17, 0); +static CLK_REGMAP_GATE(clk_en_misc_vfd, "clk_en_misc", 0, 0x08c, 18, 0); + +static struct clk_regmap *rtd1625_clk_regmap_list[] =3D { + &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 =3D { + .num =3D RTD1625_ISO_CLK_MAX, + .hws =3D { + [RTD1625_ISO_CLK_EN_USB_P4] =3D &__clk_regmap_gate_hw(&clk_en_usb_p= 4), + [RTD1625_ISO_CLK_EN_USB_P3] =3D &__clk_regmap_gate_hw(&clk_en_usb_p= 3), + [RTD1625_ISO_CLK_EN_MISC_CEC0] =3D &__clk_regmap_gate_hw(&clk_en_misc_= cec0), + [RTD1625_ISO_CLK_EN_CBUSRX_SYS] =3D &__clk_regmap_gate_hw(&clk_en_cbusr= x_sys), + [RTD1625_ISO_CLK_EN_CBUSTX_SYS] =3D &__clk_regmap_gate_hw(&clk_en_cbust= x_sys), + [RTD1625_ISO_CLK_EN_CBUS_SYS] =3D &__clk_regmap_gate_hw(&clk_en_cbus_= sys), + [RTD1625_ISO_CLK_EN_CBUS_OSC] =3D &__clk_regmap_gate_hw(&clk_en_cbus_= osc), + [RTD1625_ISO_CLK_EN_I2C0] =3D &__clk_regmap_gate_hw(&clk_en_i2c0), + [RTD1625_ISO_CLK_EN_I2C1] =3D &__clk_regmap_gate_hw(&clk_en_i2c1), + [RTD1625_ISO_CLK_EN_ETN_250M] =3D &__clk_regmap_gate_hw(&clk_en_etn_2= 50m), + [RTD1625_ISO_CLK_EN_ETN_SYS] =3D &__clk_regmap_gate_hw(&clk_en_etn_s= ys), + [RTD1625_ISO_CLK_EN_USB_DRD] =3D &__clk_regmap_gate_hw(&clk_en_usb_d= rd), + [RTD1625_ISO_CLK_EN_USB_HOST] =3D &__clk_regmap_gate_hw(&clk_en_usb_h= ost), + [RTD1625_ISO_CLK_EN_USB_U3_HOST] =3D &__clk_regmap_gate_hw(&clk_en_usb_u= 3_host), + [RTD1625_ISO_CLK_EN_USB] =3D &__clk_regmap_gate_hw(&clk_en_usb), + [RTD1625_ISO_CLK_EN_VTC] =3D &__clk_regmap_gate_hw(&clk_en_vtc), + [RTD1625_ISO_CLK_EN_MISC_VFD] =3D &__clk_regmap_gate_hw(&clk_en_misc_= vfd), + [RTD1625_ISO_CLK_MAX] =3D NULL, + }, +}; + +static struct rtk_reset_bank rtd1625_iso_reset_banks[] =3D { + {.ofs =3D 0x88,}, +}; + +static const struct rtk_clk_desc rtd1625_iso_desc =3D { + .clk_data =3D &rtd1625_iso_clk_data, + .clks =3D rtd1625_clk_regmap_list, + .num_clks =3D ARRAY_SIZE(rtd1625_clk_regmap_list), + .reset_banks =3D rtd1625_iso_reset_banks, + .num_reset_banks =3D ARRAY_SIZE(rtd1625_iso_reset_banks), +}; + +static CLK_REGMAP_GATE_NO_PARENT(clk_en_irda, 0, 0x314, 6, 1); +static CLK_REGMAP_GATE_NO_PARENT(clk_en_ur10, 0, 0x314, 8, 1); + +static struct clk_regmap *rtd1625_iso_s_clk_regmap_list[] =3D { + &clk_en_irda.clkr, + &clk_en_ur10.clkr, +}; + +static struct clk_hw_onecell_data rtd1625_iso_s_clk_data =3D { + .num =3D RTD1625_ISO_S_CLK_MAX, + .hws =3D { + [RTD1625_ISO_S_CLK_EN_IRDA] =3D &__clk_regmap_gate_hw(&clk_en_irda), + [RTD1625_ISO_S_CLK_EN_UR10] =3D &__clk_regmap_gate_hw(&clk_en_ur10), + [RTD1625_ISO_S_CLK_MAX] =3D NULL, + }, +}; + +static struct rtk_reset_bank rtd1625_iso_s_reset_banks[] =3D { + {.ofs =3D 0x310, .write_en =3D 1,}, +}; + +static const struct rtk_clk_desc rtd1625_iso_s_desc =3D { + .clk_data =3D &rtd1625_iso_s_clk_data, + .clks =3D rtd1625_iso_s_clk_regmap_list, + .num_clks =3D ARRAY_SIZE(rtd1625_iso_s_clk_regmap_list), + .reset_banks =3D rtd1625_iso_s_reset_banks, + .num_reset_banks =3D ARRAY_SIZE(rtd1625_iso_s_reset_banks), +}; + +static int rtd1625_iso_probe(struct platform_device *pdev) +{ + const struct rtk_clk_desc *desc; + + desc =3D of_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[] =3D { + {.compatible =3D "realtek,rtd1625-iso-clk", .data =3D &rtd1625_iso_desc}, + {.compatible =3D "realtek,rtd1625-iso-s-clk", .data =3D &rtd1625_iso_s_de= sc}, + {/* sentinel */} +}; + +static struct platform_driver rtd1625_iso_driver =3D { + .probe =3D rtd1625_iso_probe, + .driver =3D { + .name =3D "rtk-rtd1625-iso-clk", + .of_match_table =3D rtd1625_iso_match, + }, +}; + +static int __init rtd1625_iso_init(void) +{ + return platform_driver_register(&rtd1625_iso_driver); +} +subsys_initcall(rtd1625_iso_init); + +MODULE_DESCRIPTION("Realtek RTD1625 ISO Controller Driver"); +MODULE_AUTHOR("Cheng-Yu Lee "); +MODULE_LICENSE("GPL"); --=20 2.34.1