From nobody Wed Oct 8 05:52:39 2025 Received: from mail-qk1-f170.google.com (mail-qk1-f170.google.com [209.85.222.170]) (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 8D5EC26B747 for ; Wed, 2 Jul 2025 11:37:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.170 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751456246; cv=none; b=KE4KjZOQT5Fz+BKZ8lMcsK43Fn1ShB0mgyKhPxZbE/duou+WmoRQG+2uHBxPA7zkebIg3gEu0zugeOvVof5NO66eXHTh4eZNCR63RyTPgci8UXIyZ+dYWM9Z17W/1mEQjg/mcOtweJBQR7qFPuD+ZtyFxOcnbuHaWMuyaoaBFog= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751456246; c=relaxed/simple; bh=ayBMmwUWquUN7DDyNXINLIpNZFt61C2iwxFPBg5v39Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oANjLVsRrKvaPC12a7IOnkh+k6Bo6736h1TzDEqbQGjyvHaTPKcizHVLJjgtC9/xdHcWRT2gLgqN64qWVxuSpDGiz94CUQeDJFoOhKfeFdcGPzIWX+qmxxeqyed0oZCOzejMK6UI3jhcNTGgyU/DguRwkyAms8DJBzdIy/Rmb6I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=Upebp/BK; arc=none smtp.client-ip=209.85.222.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="Upebp/BK" Received: by mail-qk1-f170.google.com with SMTP id af79cd13be357-7d45b80368dso382971185a.1 for ; Wed, 02 Jul 2025 04:37:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1751456241; x=1752061041; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=231Ju+ANJqnwd+oJM/+IwmYmXeqQ/OzVfTAOLVWb5ss=; b=Upebp/BKvPGGQPy/P1zX5VbW2tQv26nj5K5nm/xWy18pET4amEzQBlAQ9stfhJTkN0 X6U/8l9aRxpotBfKT6VNb3Hrtj07WHgHVmDj6Sk4XObja3l5xmEJ+bMdknxavx3oEEiD 2uFPmkBUsd2t0qZTrD61nQaBxlm1fkQAwG5l+zfO1KJIrV8UM8kUtqbUFM+wD++WY7sf izXZmmRBUH75akb7qjZHmEhxWDTHK8V+k6OmYmLhGwDTKxTxn5hFz3jbhGqR3TfPC2tL hR6jx9iGw0LrFcj5fBz8ze+DB5IjBxGDBpogZjBwFncMci61AgpNlBI8Cfgux72oCFh4 FWLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1751456241; x=1752061041; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=231Ju+ANJqnwd+oJM/+IwmYmXeqQ/OzVfTAOLVWb5ss=; b=uCjsJKfKOTrYQQwA0uGcHDFsoK5y96P+dUm6O+Myj7772p4qDemw8nqGZFgL9PSzcX GxDcKhN3yQGC003RpDBCQkW0PeenfaLqPYWI5pIw8sb5oQ+QhvWQpf9hHIiB00BVBfjf hwTJ6PsIJkBfniBH/5ESAW1XVXuWm3JUY1rISwRzUXcechNHbDxU7GwVHh4lKaa23kg6 y0HcKoKTqW4TKCZDC+4cyKXYVvEYlbJyDNvn5iksDWlF92CDGKfRDtgS75Uays0EuYdj ST2k6MTcHIzoAAO4jB5KEF8J/NchPtoQGUdKYwR/EKWsXjFbDwEuma46GT5op7G0KpdV oXEg== X-Forwarded-Encrypted: i=1; AJvYcCVqYsyQD3AKxuwnlrA+fB+ZSMk4hfQ3m0FRtbW+3oQiM/j2m5gSh8LWxiAIsBAoKGqUWICnyJ2B9OC8jsQ=@vger.kernel.org X-Gm-Message-State: AOJu0YysNBctfHVloOV7/Xm8KOfa+YbHSAWWWEWL3LFGc708uqPDQSFY sZAI7eFxTso0ewrIb8/EpqFDZu5UrIcU45H5Z4PmzNuSgUthRVTlBPc3lihB4LyAyzn2kXiwcXG Ybqra X-Gm-Gg: ASbGncs2IVhmE+YeLUia7xdwtFRWL0SM5eBnhmKyl2/gQT1WFZhKwty9IY09WN4HqR8 1QcQ92dD8bnjTsmv5MPYJOPw+/WiMMA/HbR7b6o87oMopj6vlaRCrExfmdz9A6VUxkS+BRmY0Ya yHaQEm/+eneKMqS54FDblGCVLxvavOgq3cgCe8/j/h8J28frHbMiFfMfwHa/h5LKFdffQwVQs13 UCfKqM0tmY4B1Qod13IOY4i/smPc4T7dXzRUXb2buog+YfRQtKYSabSZrHmdCq2lWdo1gsa0e5S QutLTuolXQ+DoJyqWgRGYgGsn1bZP+xM9R6K0KBx64QYvYrMfQic0FSnTiXVw7/JPyLWVTAjyqO 3AsXnioSBYbK5fMfLzbK5xUZ+Ywta2Bof31Y= X-Google-Smtp-Source: AGHT+IEQqjHBSCynalvD5Ki2EskC5JWH3RLykK5ZdG6oML6+bhQScwMBYFr3A2G1xXgF7Ym8e/thtg== X-Received: by 2002:a05:6214:4386:b0:6fb:62aa:2a04 with SMTP id 6a1803df08f44-702b1a6a3d3mr26951546d6.12.1751456241012; Wed, 02 Jul 2025 04:37:21 -0700 (PDT) Received: from localhost.localdomain (c-73-228-159-35.hsd1.mn.comcast.net. [73.228.159.35]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6fd7730ac6csm99218046d6.103.2025.07.02.04.37.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Jul 2025 04:37:20 -0700 (PDT) From: Alex Elder To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, mturquette@baylibre.com, sboyd@kernel.org, p.zabel@pengutronix.de, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, dlan@gentoo.org Cc: heylenay@4d2.org, inochiama@outlook.com, guodong@riscstar.com, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, spacemit@lists.linux.dev, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v12 5/6] reset: spacemit: add support for SpacemiT CCU resets Date: Wed, 2 Jul 2025 06:37:07 -0500 Message-ID: <20250702113709.291748-6-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250702113709.291748-1-elder@riscstar.com> References: <20250702113709.291748-1-elder@riscstar.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" Implement reset support for SpacemiT CCUs. A SpacemiT reset controller device is an auxiliary device associated with a clock controller (CCU). This patch defines the reset controllers for the MPMU, APBC, and MPMU CCUs, which already define clock controllers. It also adds RCPU, RCPU2, and ACPB2 CCUs, which only define resets. Signed-off-by: Alex Elder Reviewed-by: Philipp Zabel Reviewed-by: Yixun Lan Acked-by: Philipp Zabel --- v12: - Rename PCIe resets to align with their clock counterparts drivers/reset/Kconfig | 9 + drivers/reset/Makefile | 1 + drivers/reset/reset-spacemit.c | 304 +++++++++++++++++++++++++++++++ include/soc/spacemit/k1-syscon.h | 30 +++ 4 files changed, 344 insertions(+) create mode 100644 drivers/reset/reset-spacemit.c diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig index ba4bb07309a1d..635eef469ab79 100644 --- a/drivers/reset/Kconfig +++ b/drivers/reset/Kconfig @@ -279,6 +279,15 @@ config RESET_SOCFPGA This enables the reset driver for the SoCFPGA ARMv7 platforms. This driver gets initialized early during platform init calls. =20 +config RESET_SPACEMIT + tristate "SpacemiT reset driver" + depends on ARCH_SPACEMIT || COMPILE_TEST + select AUXILIARY_BUS + default ARCH_SPACEMIT + help + This enables the reset controller driver for SpacemiT SoCs, + including the K1. + config RESET_SUNPLUS bool "Sunplus SoCs Reset Driver" if COMPILE_TEST default ARCH_SUNPLUS diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile index 82488dac0f35e..a917d2522e8d1 100644 --- a/drivers/reset/Makefile +++ b/drivers/reset/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_RESET_RZV2H_USB2PHY) +=3D reset-rzv2h-usb2ph= y.o obj-$(CONFIG_RESET_SCMI) +=3D reset-scmi.o obj-$(CONFIG_RESET_SIMPLE) +=3D reset-simple.o obj-$(CONFIG_RESET_SOCFPGA) +=3D reset-socfpga.o +obj-$(CONFIG_RESET_SPACEMIT) +=3D reset-spacemit.o obj-$(CONFIG_RESET_SUNPLUS) +=3D reset-sunplus.o obj-$(CONFIG_RESET_SUNXI) +=3D reset-sunxi.o obj-$(CONFIG_RESET_TH1520) +=3D reset-th1520.o diff --git a/drivers/reset/reset-spacemit.c b/drivers/reset/reset-spacemit.c new file mode 100644 index 0000000000000..e1272aff28f74 --- /dev/null +++ b/drivers/reset/reset-spacemit.c @@ -0,0 +1,304 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* SpacemiT reset controller driver */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +struct ccu_reset_data { + u32 offset; + u32 assert_mask; + u32 deassert_mask; +}; + +struct ccu_reset_controller_data { + const struct ccu_reset_data *reset_data; /* array */ + size_t count; +}; + +struct ccu_reset_controller { + struct reset_controller_dev rcdev; + const struct ccu_reset_controller_data *data; + struct regmap *regmap; +}; + +#define RESET_DATA(_offset, _assert_mask, _deassert_mask) \ + { \ + .offset =3D (_offset), \ + .assert_mask =3D (_assert_mask), \ + .deassert_mask =3D (_deassert_mask), \ + } + +static const struct ccu_reset_data k1_mpmu_resets[] =3D { + [RESET_WDT] =3D RESET_DATA(MPMU_WDTPCR, BIT(2), 0), +}; + +static const struct ccu_reset_controller_data k1_mpmu_reset_data =3D { + .reset_data =3D k1_mpmu_resets, + .count =3D ARRAY_SIZE(k1_mpmu_resets), +}; + +static const struct ccu_reset_data k1_apbc_resets[] =3D { + [RESET_UART0] =3D RESET_DATA(APBC_UART1_CLK_RST, BIT(2), 0), + [RESET_UART2] =3D RESET_DATA(APBC_UART2_CLK_RST, BIT(2), 0), + [RESET_GPIO] =3D RESET_DATA(APBC_GPIO_CLK_RST, BIT(2), 0), + [RESET_PWM0] =3D RESET_DATA(APBC_PWM0_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM1] =3D RESET_DATA(APBC_PWM1_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM2] =3D RESET_DATA(APBC_PWM2_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM3] =3D RESET_DATA(APBC_PWM3_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM4] =3D RESET_DATA(APBC_PWM4_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM5] =3D RESET_DATA(APBC_PWM5_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM6] =3D RESET_DATA(APBC_PWM6_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM7] =3D RESET_DATA(APBC_PWM7_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM8] =3D RESET_DATA(APBC_PWM8_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM9] =3D RESET_DATA(APBC_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM10] =3D RESET_DATA(APBC_PWM10_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM11] =3D RESET_DATA(APBC_PWM11_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM12] =3D RESET_DATA(APBC_PWM12_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM13] =3D RESET_DATA(APBC_PWM13_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM14] =3D RESET_DATA(APBC_PWM14_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM15] =3D RESET_DATA(APBC_PWM15_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM16] =3D RESET_DATA(APBC_PWM16_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM17] =3D RESET_DATA(APBC_PWM17_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM18] =3D RESET_DATA(APBC_PWM18_CLK_RST, BIT(2), BIT(0)), + [RESET_PWM19] =3D RESET_DATA(APBC_PWM19_CLK_RST, BIT(2), BIT(0)), + [RESET_SSP3] =3D RESET_DATA(APBC_SSP3_CLK_RST, BIT(2), 0), + [RESET_UART3] =3D RESET_DATA(APBC_UART3_CLK_RST, BIT(2), 0), + [RESET_RTC] =3D RESET_DATA(APBC_RTC_CLK_RST, BIT(2), 0), + [RESET_TWSI0] =3D RESET_DATA(APBC_TWSI0_CLK_RST, BIT(2), 0), + [RESET_TIMERS1] =3D RESET_DATA(APBC_TIMERS1_CLK_RST, BIT(2), 0), + [RESET_AIB] =3D RESET_DATA(APBC_AIB_CLK_RST, BIT(2), 0), + [RESET_TIMERS2] =3D RESET_DATA(APBC_TIMERS2_CLK_RST, BIT(2), 0), + [RESET_ONEWIRE] =3D RESET_DATA(APBC_ONEWIRE_CLK_RST, BIT(2), 0), + [RESET_SSPA0] =3D RESET_DATA(APBC_SSPA0_CLK_RST, BIT(2), 0), + [RESET_SSPA1] =3D RESET_DATA(APBC_SSPA1_CLK_RST, BIT(2), 0), + [RESET_DRO] =3D RESET_DATA(APBC_DRO_CLK_RST, BIT(2), 0), + [RESET_IR] =3D RESET_DATA(APBC_IR_CLK_RST, BIT(2), 0), + [RESET_TWSI1] =3D RESET_DATA(APBC_TWSI1_CLK_RST, BIT(2), 0), + [RESET_TSEN] =3D RESET_DATA(APBC_TSEN_CLK_RST, BIT(2), 0), + [RESET_TWSI2] =3D RESET_DATA(APBC_TWSI2_CLK_RST, BIT(2), 0), + [RESET_TWSI4] =3D RESET_DATA(APBC_TWSI4_CLK_RST, BIT(2), 0), + [RESET_TWSI5] =3D RESET_DATA(APBC_TWSI5_CLK_RST, BIT(2), 0), + [RESET_TWSI6] =3D RESET_DATA(APBC_TWSI6_CLK_RST, BIT(2), 0), + [RESET_TWSI7] =3D RESET_DATA(APBC_TWSI7_CLK_RST, BIT(2), 0), + [RESET_TWSI8] =3D RESET_DATA(APBC_TWSI8_CLK_RST, BIT(2), 0), + [RESET_IPC_AP2AUD] =3D RESET_DATA(APBC_IPC_AP2AUD_CLK_RST, BIT(2), 0), + [RESET_UART4] =3D RESET_DATA(APBC_UART4_CLK_RST, BIT(2), 0), + [RESET_UART5] =3D RESET_DATA(APBC_UART5_CLK_RST, BIT(2), 0), + [RESET_UART6] =3D RESET_DATA(APBC_UART6_CLK_RST, BIT(2), 0), + [RESET_UART7] =3D RESET_DATA(APBC_UART7_CLK_RST, BIT(2), 0), + [RESET_UART8] =3D RESET_DATA(APBC_UART8_CLK_RST, BIT(2), 0), + [RESET_UART9] =3D RESET_DATA(APBC_UART9_CLK_RST, BIT(2), 0), + [RESET_CAN0] =3D RESET_DATA(APBC_CAN0_CLK_RST, BIT(2), 0), +}; + +static const struct ccu_reset_controller_data k1_apbc_reset_data =3D { + .reset_data =3D k1_apbc_resets, + .count =3D ARRAY_SIZE(k1_apbc_resets), +}; + +static const struct ccu_reset_data k1_apmu_resets[] =3D { + [RESET_CCIC_4X] =3D RESET_DATA(APMU_CCIC_CLK_RES_CTRL, 0, BIT(1)), + [RESET_CCIC1_PHY] =3D RESET_DATA(APMU_CCIC_CLK_RES_CTRL, 0, BIT(2)), + [RESET_SDH_AXI] =3D RESET_DATA(APMU_SDH0_CLK_RES_CTRL, 0, BIT(0)), + [RESET_SDH0] =3D RESET_DATA(APMU_SDH0_CLK_RES_CTRL, 0, BIT(1)), + [RESET_SDH1] =3D RESET_DATA(APMU_SDH1_CLK_RES_CTRL, 0, BIT(1)), + [RESET_SDH2] =3D RESET_DATA(APMU_SDH2_CLK_RES_CTRL, 0, BIT(1)), + [RESET_USBP1_AXI] =3D RESET_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(4)), + [RESET_USB_AXI] =3D RESET_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(0)), + [RESET_USB30_AHB] =3D RESET_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(9)), + [RESET_USB30_VCC] =3D RESET_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(10)), + [RESET_USB30_PHY] =3D RESET_DATA(APMU_USB_CLK_RES_CTRL, 0, BIT(11)), + [RESET_QSPI] =3D RESET_DATA(APMU_QSPI_CLK_RES_CTRL, 0, BIT(1)), + [RESET_QSPI_BUS] =3D RESET_DATA(APMU_QSPI_CLK_RES_CTRL, 0, BIT(0)), + [RESET_DMA] =3D RESET_DATA(APMU_DMA_CLK_RES_CTRL, 0, BIT(0)), + [RESET_AES] =3D RESET_DATA(APMU_AES_CLK_RES_CTRL, 0, BIT(4)), + [RESET_VPU] =3D RESET_DATA(APMU_VPU_CLK_RES_CTRL, 0, BIT(0)), + [RESET_GPU] =3D RESET_DATA(APMU_GPU_CLK_RES_CTRL, 0, BIT(1)), + [RESET_EMMC] =3D RESET_DATA(APMU_PMUA_EM_CLK_RES_CTRL, 0, BIT(1)), + [RESET_EMMC_X] =3D RESET_DATA(APMU_PMUA_EM_CLK_RES_CTRL, 0, BIT(0)), + [RESET_AUDIO_SYS] =3D RESET_DATA(APMU_AUDIO_CLK_RES_CTRL, 0, BIT(0)), + [RESET_AUDIO_MCU] =3D RESET_DATA(APMU_AUDIO_CLK_RES_CTRL, 0, BIT(2)), + [RESET_AUDIO_APMU] =3D RESET_DATA(APMU_AUDIO_CLK_RES_CTRL, 0, BIT(3)), + [RESET_HDMI] =3D RESET_DATA(APMU_HDMI_CLK_RES_CTRL, 0, BIT(9)), + [RESET_PCIE0_DBI] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_0, 0, BIT(3)), + [RESET_PCIE0_SLAVE] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_0, 0, BIT(4)), + [RESET_PCIE0_MASTER] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_0, 0, BIT(5)), + [RESET_PCIE0_GLOBAL] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_0, BIT(8), 0), + [RESET_PCIE1_DBI] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_1, 0, BIT(3)), + [RESET_PCIE1_SLAVE] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_1, 0, BIT(4)), + [RESET_PCIE1_MASTER] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_1, 0, BIT(5)), + [RESET_PCIE1_GLOBAL] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_1, BIT(8), 0), + [RESET_PCIE2_DBI] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_2, 0, BIT(3)), + [RESET_PCIE2_SLAVE] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_2, 0, BIT(4)), + [RESET_PCIE2_MASTER] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_2, 0, BIT(5)), + [RESET_PCIE2_GLOBAL] =3D RESET_DATA(APMU_PCIE_CLK_RES_CTRL_2, BIT(8), 0), + [RESET_EMAC0] =3D RESET_DATA(APMU_EMAC0_CLK_RES_CTRL, 0, BIT(1)), + [RESET_EMAC1] =3D RESET_DATA(APMU_EMAC1_CLK_RES_CTRL, 0, BIT(1)), + [RESET_JPG] =3D RESET_DATA(APMU_JPG_CLK_RES_CTRL, 0, BIT(0)), + [RESET_CCIC2PHY] =3D RESET_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(2)), + [RESET_CCIC3PHY] =3D RESET_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(29)), + [RESET_CSI] =3D RESET_DATA(APMU_CSI_CCIC2_CLK_RES_CTRL, 0, BIT(1)), + [RESET_ISP] =3D RESET_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(0)), + [RESET_ISP_CPP] =3D RESET_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(27)), + [RESET_ISP_BUS] =3D RESET_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(3)), + [RESET_ISP_CI] =3D RESET_DATA(APMU_ISP_CLK_RES_CTRL, 0, BIT(16)), + [RESET_DPU_MCLK] =3D RESET_DATA(APMU_LCD_CLK_RES_CTRL2, 0, BIT(9)), + [RESET_DPU_ESC] =3D RESET_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(3)), + [RESET_DPU_HCLK] =3D RESET_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(4)), + [RESET_DPU_SPIBUS] =3D RESET_DATA(APMU_LCD_SPI_CLK_RES_CTRL, 0, BIT(4)), + [RESET_DPU_SPI_HBUS] =3D RESET_DATA(APMU_LCD_SPI_CLK_RES_CTRL, 0, BIT(2)), + [RESET_V2D] =3D RESET_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(27)), + [RESET_MIPI] =3D RESET_DATA(APMU_LCD_CLK_RES_CTRL1, 0, BIT(15)), + [RESET_MC] =3D RESET_DATA(APMU_PMUA_MC_CTRL, 0, BIT(0)), +}; + +static const struct ccu_reset_controller_data k1_apmu_reset_data =3D { + .reset_data =3D k1_apmu_resets, + .count =3D ARRAY_SIZE(k1_apmu_resets), +}; + +static const struct ccu_reset_data k1_rcpu_resets[] =3D { + [RESET_RCPU_SSP0] =3D RESET_DATA(RCPU_SSP0_CLK_RST, 0, BIT(0)), + [RESET_RCPU_I2C0] =3D RESET_DATA(RCPU_I2C0_CLK_RST, 0, BIT(0)), + [RESET_RCPU_UART1] =3D RESET_DATA(RCPU_UART1_CLK_RST, 0, BIT(0)), + [RESET_RCPU_IR] =3D RESET_DATA(RCPU_CAN_CLK_RST, 0, BIT(0)), + [RESET_RCPU_CAN] =3D RESET_DATA(RCPU_IR_CLK_RST, 0, BIT(0)), + [RESET_RCPU_UART0] =3D RESET_DATA(RCPU_UART0_CLK_RST, 0, BIT(0)), + [RESET_RCPU_HDMI_AUDIO] =3D RESET_DATA(AUDIO_HDMI_CLK_CTRL, 0, BIT(0)), +}; + +static const struct ccu_reset_controller_data k1_rcpu_reset_data =3D { + .reset_data =3D k1_rcpu_resets, + .count =3D ARRAY_SIZE(k1_rcpu_resets), +}; + +static const struct ccu_reset_data k1_rcpu2_resets[] =3D { + [RESET_RCPU2_PWM0] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM1] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM2] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM3] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM4] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM5] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM6] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM7] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM8] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), + [RESET_RCPU2_PWM9] =3D RESET_DATA(RCPU2_PWM9_CLK_RST, BIT(2), BIT(0)), +}; + +static const struct ccu_reset_controller_data k1_rcpu2_reset_data =3D { + .reset_data =3D k1_rcpu2_resets, + .count =3D ARRAY_SIZE(k1_rcpu2_resets), +}; + +static const struct ccu_reset_data k1_apbc2_resets[] =3D { + [RESET_APBC2_UART1] =3D RESET_DATA(APBC2_UART1_CLK_RST, BIT(2), 0), + [RESET_APBC2_SSP2] =3D RESET_DATA(APBC2_SSP2_CLK_RST, BIT(2), 0), + [RESET_APBC2_TWSI3] =3D RESET_DATA(APBC2_TWSI3_CLK_RST, BIT(2), 0), + [RESET_APBC2_RTC] =3D RESET_DATA(APBC2_RTC_CLK_RST, BIT(2), 0), + [RESET_APBC2_TIMERS0] =3D RESET_DATA(APBC2_TIMERS0_CLK_RST, BIT(2), 0), + [RESET_APBC2_KPC] =3D RESET_DATA(APBC2_KPC_CLK_RST, BIT(2), 0), + [RESET_APBC2_GPIO] =3D RESET_DATA(APBC2_GPIO_CLK_RST, BIT(2), 0), +}; + +static const struct ccu_reset_controller_data k1_apbc2_reset_data =3D { + .reset_data =3D k1_apbc2_resets, + .count =3D ARRAY_SIZE(k1_apbc2_resets), +}; + +static int spacemit_reset_update(struct reset_controller_dev *rcdev, + unsigned long id, bool assert) +{ + struct ccu_reset_controller *controller; + const struct ccu_reset_data *data; + u32 mask; + u32 val; + + controller =3D container_of(rcdev, struct ccu_reset_controller, rcdev); + data =3D &controller->data->reset_data[id]; + mask =3D data->assert_mask | data->deassert_mask; + val =3D assert ? data->assert_mask : data->deassert_mask; + + return regmap_update_bits(controller->regmap, data->offset, mask, val); +} + +static int spacemit_reset_assert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return spacemit_reset_update(rcdev, id, true); +} + +static int spacemit_reset_deassert(struct reset_controller_dev *rcdev, + unsigned long id) +{ + return spacemit_reset_update(rcdev, id, false); +} + +static const struct reset_control_ops spacemit_reset_control_ops =3D { + .assert =3D spacemit_reset_assert, + .deassert =3D spacemit_reset_deassert, +}; + +static int spacemit_reset_controller_register(struct device *dev, + struct ccu_reset_controller *controller) +{ + struct reset_controller_dev *rcdev =3D &controller->rcdev; + + rcdev->ops =3D &spacemit_reset_control_ops; + rcdev->owner =3D THIS_MODULE; + rcdev->of_node =3D dev->of_node; + rcdev->nr_resets =3D controller->data->count; + + return devm_reset_controller_register(dev, &controller->rcdev); +} + +static int spacemit_reset_probe(struct auxiliary_device *adev, + const struct auxiliary_device_id *id) +{ + struct spacemit_ccu_adev *rdev =3D to_spacemit_ccu_adev(adev); + struct ccu_reset_controller *controller; + struct device *dev =3D &adev->dev; + + controller =3D devm_kzalloc(dev, sizeof(*controller), GFP_KERNEL); + if (!controller) + return -ENOMEM; + controller->data =3D (const struct ccu_reset_controller_data *)id->driver= _data; + controller->regmap =3D rdev->regmap; + + return spacemit_reset_controller_register(dev, controller); +} + +#define K1_AUX_DEV_ID(_unit) \ + { \ + .name =3D "spacemit_ccu_k1." #_unit "-reset", \ + .driver_data =3D (kernel_ulong_t)&k1_ ## _unit ## _reset_data, \ + } + +static const struct auxiliary_device_id spacemit_reset_ids[] =3D { + K1_AUX_DEV_ID(mpmu), + K1_AUX_DEV_ID(apbc), + K1_AUX_DEV_ID(apmu), + K1_AUX_DEV_ID(rcpu), + K1_AUX_DEV_ID(rcpu2), + K1_AUX_DEV_ID(apbc2), + { }, +}; +MODULE_DEVICE_TABLE(auxiliary, spacemit_reset_ids); + +static struct auxiliary_driver spacemit_k1_reset_driver =3D { + .probe =3D spacemit_reset_probe, + .id_table =3D spacemit_reset_ids, +}; +module_auxiliary_driver(spacemit_k1_reset_driver); + +MODULE_AUTHOR("Alex Elder "); +MODULE_DESCRIPTION("SpacemiT reset controller driver"); +MODULE_LICENSE("GPL"); diff --git a/include/soc/spacemit/k1-syscon.h b/include/soc/spacemit/k1-sys= con.h index 53eff7691f33d..c59bd7a38e5b4 100644 --- a/include/soc/spacemit/k1-syscon.h +++ b/include/soc/spacemit/k1-syscon.h @@ -127,4 +127,34 @@ to_spacemit_ccu_adev(struct auxiliary_device *adev) #define APMU_EMAC0_CLK_RES_CTRL 0x3e4 #define APMU_EMAC1_CLK_RES_CTRL 0x3ec =20 +/* RCPU register offsets */ +#define RCPU_SSP0_CLK_RST 0x0028 +#define RCPU_I2C0_CLK_RST 0x0030 +#define RCPU_UART1_CLK_RST 0x003c +#define RCPU_CAN_CLK_RST 0x0048 +#define RCPU_IR_CLK_RST 0x004c +#define RCPU_UART0_CLK_RST 0x00d8 +#define AUDIO_HDMI_CLK_CTRL 0x2044 + +/* RCPU2 register offsets */ +#define RCPU2_PWM0_CLK_RST 0x0000 +#define RCPU2_PWM1_CLK_RST 0x0004 +#define RCPU2_PWM2_CLK_RST 0x0008 +#define RCPU2_PWM3_CLK_RST 0x000c +#define RCPU2_PWM4_CLK_RST 0x0010 +#define RCPU2_PWM5_CLK_RST 0x0014 +#define RCPU2_PWM6_CLK_RST 0x0018 +#define RCPU2_PWM7_CLK_RST 0x001c +#define RCPU2_PWM8_CLK_RST 0x0020 +#define RCPU2_PWM9_CLK_RST 0x0024 + +/* APBC2 register offsets */ +#define APBC2_UART1_CLK_RST 0x0000 +#define APBC2_SSP2_CLK_RST 0x0004 +#define APBC2_TWSI3_CLK_RST 0x0008 +#define APBC2_RTC_CLK_RST 0x000c +#define APBC2_TIMERS0_CLK_RST 0x0010 +#define APBC2_KPC_CLK_RST 0x0014 +#define APBC2_GPIO_CLK_RST 0x001c + #endif /* __SOC_K1_SYSCON_H__ */ --=20 2.45.2