From patchwork Mon Mar 20 13:54:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 72175 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp1240789wrt; Mon, 20 Mar 2023 07:14:27 -0700 (PDT) X-Google-Smtp-Source: AK7set86ObQC06Fq/NMnojUobbQ3gqtRf6hgRcALCRhO1hhKlqmwY4HIihKzosvxL71LXojdMIW8 X-Received: by 2002:a17:90b:17cb:b0:229:f4f3:e904 with SMTP id me11-20020a17090b17cb00b00229f4f3e904mr20030311pjb.11.1679321666751; Mon, 20 Mar 2023 07:14:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679321666; cv=none; d=google.com; s=arc-20160816; b=DzgbtyG9Rk85Y15giLn6qPwJ0HbsM6fjl0I33VM4KFc25Vpyu9+nAtcipcrS7CEjeg qadGKjhY+gn2HkxjBLJjpejKbDiU99dZeyynq3CRE6BMTzM//Zue6NGJlvLkp/gwSpyL Igg0RddS+ZMF0Fl9kEvoLuDgwdwFjPDbXgEI2zzK7wtxVE2me3kfbv0s/228gdNJami0 C8jQ1EwQlJDaweg5uRbmbh5in5rVd7qjBe3q7mKX0LV5l2mWvXrYX2nC5yQmFqfhjBMt aZ4mxJsUdlMOz5JVgsK4VMxGnMmMsuEgDWoX5UqaGqQ1uJ4xcSjb3YKQgI49NvgTdJqQ BQpA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=SxLwvHEZzxGPbli/KErtr0CkgklD292ZnH05Gv/4G2Y=; b=ASfD4ezkKcXCmuvnA1RhyZYJdwNiEZYl4PG8I45/NKUAhpvbCxQgtcdYfn1yS3ebcv 0n6YmKTNbk9/gGyc4PKFfpMGmuDbxC8qfq1EgdJr4+/FZrR6PY4ANbgb9wUyZH2DO55g Vhe941HY5yJMh7090MpSnvNf4acsykXrDCAC98pk6vJrzjmuxhzeAr1qRTURO+Ky8j3d 6ppazgRnR0ecuxazyMkpefXeVZ1rEayscuAHnlRy+my1yZctrQXp/3MgcelnxtxCtkFW zWaqQxoaz6M9mAzZkkdHhn0GnhhVXjLjVQ2NmbP9AxluUhvAqYsAqpeEllFmZfNTQkDl 3OAg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id c22-20020a17090ab29600b0022c83e223desi2518507pjr.58.2023.03.20.07.14.04; Mon, 20 Mar 2023 07:14:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231295AbjCTNzU convert rfc822-to-8bit (ORCPT + 99 others); Mon, 20 Mar 2023 09:55:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231649AbjCTNyx (ORCPT ); Mon, 20 Mar 2023 09:54:53 -0400 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A180126D0; Mon, 20 Mar 2023 06:54:38 -0700 (PDT) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id EC37E24E0B4; Mon, 20 Mar 2023 21:54:35 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:35 +0800 Received: from localhost.localdomain (183.27.97.64) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:34 +0800 From: Xingyu Wu To: , , "Daniel Lezcano" , Thomas Gleixner , Krzysztof Kozlowski CC: Rob Herring , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v2 1/3] dt-bindings: timer: Add timer for StarFive JH7110 SoC Date: Mon, 20 Mar 2023 21:54:31 +0800 Message-ID: <20230320135433.144832-2-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230320135433.144832-1-xingyu.wu@starfivetech.com> References: <20230320135433.144832-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.97.64] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_MSPIKE_H2, SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760896396028089027?= X-GMAIL-MSGID: =?utf-8?q?1760896396028089027?= Add bindings for the timer on the JH7110 RISC-V SoC by StarFive Technology Ltd. Signed-off-by: Xingyu Wu Reviewed-by: Krzysztof Kozlowski --- .../bindings/timer/starfive,jh7110-timer.yaml | 95 +++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml diff --git a/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml b/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml new file mode 100644 index 000000000000..24b34618f2c8 --- /dev/null +++ b/Documentation/devicetree/bindings/timer/starfive,jh7110-timer.yaml @@ -0,0 +1,95 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/timer/starfive,jh7110-timer.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: StarFive JH7110 Timer +maintainers: + - Xingyu Wu + - Samin Guo + +description: + This timer has four free-running 32 bit counters in StarFive JH7110 SoC. + And each channel(counter) triggers an interrupt when timeout. They support + one-shot mode and continuous-run mode. + +properties: + compatible: + const: starfive,jh7110-timer + + reg: + maxItems: 1 + + interrupts: + items: + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + clocks: + items: + - description: timer APB + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + clock-names: + items: + - const: apb + - const: ch0 + - const: ch1 + - const: ch2 + - const: ch3 + + resets: + items: + - description: timer APB + - description: channel 0 + - description: channel 1 + - description: channel 2 + - description: channel 3 + + reset-names: + items: + - const: apb + - const: ch0 + - const: ch1 + - const: ch2 + - const: ch3 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - resets + - reset-names + +additionalProperties: false + +examples: + - | + timer@13050000 { + compatible = "starfive,jh7110-timer"; + reg = <0x13050000 0x10000>; + interrupts = <69>, <70>, <71> ,<72>; + clocks = <&clk 124>, + <&clk 125>, + <&clk 126>, + <&clk 127>, + <&clk 128>; + clock-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + resets = <&rst 117>, + <&rst 118>, + <&rst 119>, + <&rst 120>, + <&rst 121>; + reset-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + }; + From patchwork Mon Mar 20 13:54:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 72173 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp1240375wrt; Mon, 20 Mar 2023 07:13:37 -0700 (PDT) X-Google-Smtp-Source: AK7set89h1tVSTMDaXxHUFlYGIFOMDTKLLIvJ5m8KOVuuyAvJp8uRUtSuYYdHrcP/uluIaxw9ql6 X-Received: by 2002:a6b:7b0b:0:b0:74c:a7c5:baf6 with SMTP id l11-20020a6b7b0b000000b0074ca7c5baf6mr5468022iop.20.1679321617156; Mon, 20 Mar 2023 07:13:37 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679321617; cv=none; d=google.com; s=arc-20160816; b=toc4fTtDQyrXWeU8z/xPMRG/isoClJ4kPrxXWxfxk3U71y4DLF1eYiN1WXyVE3HU/f QGhkgDJTXw9/MtkcYpmiEpUAhy9XVsRI6hxn4CkKlrNlcOSd9C6Ul5vhU9jlukkifL6x e7g/6VqVHlGDmvzX01AV2Iv2JX0eNyVVmpjbPdNqxzRy+Lk4QGALCy/r7Y1kxVseTylf sne1ylkf2Xs18QGDvjwUF57vHoGWFeHd4a8c3MpxCg5LghXLP+PJucWLMsmiI9QWP5fU YoOVRsjmeCZj6bgMJiW8XfnP+YJA15q74IGFszFO72sgm0QrcFfRL9Mc8rSVRFRaFmcY Hjqw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=uqGVMMIrj7C+jLG+3hvRXFJfh+AqkG19cfEpIPqfO48=; b=tu7FDkTDe9blZIWrRj/ESlVq3PeA4SB0lTzRL0jlzjIg2z9Ei8n4UB7ZvhIbbAFBYJ Kug+ivCPYIDBeRNS71jprp2yTFgK3zYIcnP6InBfVPICp5pzSaD+XFUwjyvcN4+ocKFu GxnQo2cqqisDIF/e7cCgXOq6Kwk8CuVAm9DRoIYIjRkfWJLIKRELywm8RgftSTPZ3+ES 9pzPnd5OzKYNTZ6XcHPqbgRGdJNmxKU81FaOLpLKPwDZ1r+j+F1Z8FCPZNH+r2kfRkC6 h5zk1cYDnYnOdjP0L1WzZZ8DJYKISeSoK4Hv/YA4NqqVvqAofuC4PjFBpif4Uzv0SHJA k3fA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id a10-20020a6b6d0a000000b00721d6be80e0si9219383iod.27.2023.03.20.07.13.02; Mon, 20 Mar 2023 07:13:37 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231602AbjCTNz3 convert rfc822-to-8bit (ORCPT + 99 others); Mon, 20 Mar 2023 09:55:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231658AbjCTNyx (ORCPT ); Mon, 20 Mar 2023 09:54:53 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA1D212CC5; Mon, 20 Mar 2023 06:54:41 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id CBB4824E1F3; Mon, 20 Mar 2023 21:54:36 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:36 +0800 Received: from localhost.localdomain (183.27.97.64) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:35 +0800 From: Xingyu Wu To: , , "Daniel Lezcano" , Thomas Gleixner , Krzysztof Kozlowski CC: Rob Herring , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v2 2/3] clocksource: Add StarFive timer driver Date: Mon, 20 Mar 2023 21:54:32 +0800 Message-ID: <20230320135433.144832-3-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230320135433.144832-1-xingyu.wu@starfivetech.com> References: <20230320135433.144832-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.97.64] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760896344178309613?= X-GMAIL-MSGID: =?utf-8?q?1760896344178309613?= Add timer driver for the StarFive JH7110 SoC. Signed-off-by: Xingyu Wu --- MAINTAINERS | 7 + drivers/clocksource/Kconfig | 12 + drivers/clocksource/Makefile | 1 + drivers/clocksource/timer-starfive.c | 390 +++++++++++++++++++++++++++ drivers/clocksource/timer-starfive.h | 96 +++++++ 5 files changed, 506 insertions(+) create mode 100644 drivers/clocksource/timer-starfive.c create mode 100644 drivers/clocksource/timer-starfive.h diff --git a/MAINTAINERS b/MAINTAINERS index 958b7ec118b4..dac6298d8f6e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19958,6 +19958,13 @@ S: Maintained T: git https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git/ F: drivers/soc/starfive/ +STARFIVE TIMER DRIVER +M: Samin Guo +M: Xingyu Wu +S: Supported +F: Documentation/devicetree/bindings/timer/starfive* +F: drivers/clocksource/timer-starfive* + STARFIVE TRNG DRIVER M: Jia Jie Ho S: Supported diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 5fc8f0e7fb38..35daf07d4db7 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -630,6 +630,18 @@ config RISCV_TIMER is accessed via both the SBI and the rdcycle instruction. This is required for all RISC-V systems. +config STARFIVE_TIMER + bool "Timer for the STARFIVE SoCs" + depends on ARCH_STARFIVE || COMPILE_TEST + select TIMER_OF + select CLKSRC_MMIO + default ARCH_STARFIVE + help + This enables the timer for StarFive SoCs. On RISC-V platform, + the system has started RISCV_TIMER. But you can also use this timer + to do a lot more on StarFive SoCs. This timer can provide high + precision and four channels to use in JH7110 SoC. + config CLINT_TIMER bool "CLINT Timer for the RISC-V platform" if COMPILE_TEST depends on GENERIC_SCHED_CLOCK && RISCV diff --git a/drivers/clocksource/Makefile b/drivers/clocksource/Makefile index 64ab547de97b..276695d95cdc 100644 --- a/drivers/clocksource/Makefile +++ b/drivers/clocksource/Makefile @@ -80,6 +80,7 @@ obj-$(CONFIG_INGENIC_TIMER) += ingenic-timer.o obj-$(CONFIG_CLKSRC_ST_LPC) += clksrc_st_lpc.o obj-$(CONFIG_X86_NUMACHIP) += numachip.o obj-$(CONFIG_RISCV_TIMER) += timer-riscv.o +obj-$(CONFIG_STARFIVE_TIMER) += timer-starfive.o obj-$(CONFIG_CLINT_TIMER) += timer-clint.o obj-$(CONFIG_CSKY_MP_TIMER) += timer-mp-csky.o obj-$(CONFIG_GX6605S_TIMER) += timer-gx6605s.o diff --git a/drivers/clocksource/timer-starfive.c b/drivers/clocksource/timer-starfive.c new file mode 100644 index 000000000000..53163948ed86 --- /dev/null +++ b/drivers/clocksource/timer-starfive.c @@ -0,0 +1,390 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Starfive Timer driver + * + * Copyright (C) 2022 StarFive Technology Co., Ltd. + * + * Author: + * Xingyu Wu + * Samin Guo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "timer-starfive.h" + +static const struct starfive_timer_chan_base starfive_timer_jh7110_base = { + .ctrl = STARFIVE_TIMER_JH7110_CTL, + .load = STARFIVE_TIMER_JH7110_LOAD, + .enable = STARFIVE_TIMER_JH7110_ENABLE, + .reload = STARFIVE_TIMER_JH7110_RELOAD, + .value = STARFIVE_TIMER_JH7110_VALUE, + .intclr = STARFIVE_TIMER_JH7110_INT_CLR, + .intmask = STARFIVE_TIMER_JH7110_INT_MASK, + .channel_num = STARFIVE_TIMER_CH_4, + .channel_base = {STARFIVE_TIMER_CH_BASE(0), STARFIVE_TIMER_CH_BASE(1), + STARFIVE_TIMER_CH_BASE(2), STARFIVE_TIMER_CH_BASE(3)}, +}; + +static inline struct starfive_clkevt *to_starfive_clkevt(struct clock_event_device *evt) +{ + return container_of(evt, struct starfive_clkevt, evt); +} + +/* 0:continuous-run mode, 1:single-run mode */ +static inline void starfive_timer_set_mod(struct starfive_clkevt *clkevt, int mod) +{ + writel(mod, clkevt->ctrl); +} + +/* Interrupt Mask Register, 0:Unmask, 1:Mask */ +static inline void starfive_timer_int_enable(struct starfive_clkevt *clkevt) +{ + writel(STARFIVE_TIMER_INTMASK_DIS, clkevt->intmask); +} + +static inline void starfive_timer_int_disable(struct starfive_clkevt *clkevt) +{ + writel(STARFIVE_TIMER_INTMASK_ENA, clkevt->intmask); +} + +/* + * BIT(0): Read value represent channel intr status. + * Write 1 to this bit to clear interrupt. Write 0 has no effects. + * BIT(1): "1" means that it is clearing interrupt. BIT(0) can not be written. + */ +static inline int starfive_timer_int_clear(struct starfive_clkevt *clkevt) +{ + u32 value; + int ret; + + /* waiting interrupt can be to clearing */ + ret = readl_poll_timeout_atomic(clkevt->intclr, value, + !(value & STARFIVE_TIMER_JH7110_INT_CLR_AVA_MASK), + STARFIVE_DELAY_US, STARFIVE_TIMEOUT_US); + if (!ret) + writel(0x1, clkevt->intclr); + + return ret; +} + +/* + * The initial value to be loaded into the + * counter and is also used as the reload value. + * val = clock rate --> 1s + */ +static inline void starfive_timer_set_load(struct starfive_clkevt *clkevt, u32 val) +{ + writel(val, clkevt->load); +} + +static inline u32 starfive_timer_get_val(struct starfive_clkevt *clkevt) +{ + return readl(clkevt->value); +} + +/* + * Write RELOAD register to reload preset value to counter. + * (Write 0 and write 1 are both ok) + */ +static inline void starfive_timer_set_reload(struct starfive_clkevt *clkevt) +{ + writel(0, clkevt->reload); +} + +static inline void starfive_timer_enable(struct starfive_clkevt *clkevt) +{ + writel(STARFIVE_TIMER_ENA, clkevt->enable); +} + +static inline void starfive_timer_disable(struct starfive_clkevt *clkevt) +{ + writel(STARFIVE_TIMER_DIS, clkevt->enable); +} + +static int starfive_timer_int_init_enable(struct starfive_clkevt *clkevt) +{ + int ret; + + starfive_timer_int_disable(clkevt); + ret = starfive_timer_int_clear(clkevt); + if (ret) + return ret; + + starfive_timer_int_enable(clkevt); + starfive_timer_enable(clkevt); + + return 0; +} + +static int starfive_timer_shutdown(struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + starfive_timer_disable(clkevt); + return starfive_timer_int_clear(clkevt); +} + +static void starfive_timer_suspend(struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + clkevt->reload_val = starfive_timer_get_val(clkevt); + starfive_timer_shutdown(evt); +} + +static void starfive_timer_resume(struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + starfive_timer_set_load(clkevt, clkevt->reload_val); + starfive_timer_set_reload(clkevt); + starfive_timer_int_enable(clkevt); + starfive_timer_enable(clkevt); +} + +static int starfive_timer_tick_resume(struct clock_event_device *evt) +{ + starfive_timer_resume(evt); + + return 0; +} + +static int starfive_clocksource_init(struct starfive_clkevt *clkevt) +{ + int ret; + + starfive_timer_set_mod(clkevt, STARFIVE_TIMER_MOD_CONTIN); + starfive_timer_set_load(clkevt, STARFIVE_TIMER_MAX_TICKS); + ret = starfive_timer_int_init_enable(clkevt); + if (ret) + return ret; + + return clocksource_mmio_init(clkevt->value, clkevt->name, clkevt->rate, + STARFIVE_CLOCK_SOURCE_RATING, STARFIVE_VALID_BITS, + clocksource_mmio_readl_down); +} + +/* IRQ handler for the timer */ +static irqreturn_t starfive_timer_interrupt(int irq, void *priv) +{ + struct clock_event_device *evt = (struct clock_event_device *)priv; + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + if (starfive_timer_int_clear(clkevt)) + return IRQ_NONE; + + if (evt->event_handler) + evt->event_handler(evt); + + return IRQ_HANDLED; +} + +static int starfive_timer_set_periodic(struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + starfive_timer_disable(clkevt); + starfive_timer_set_mod(clkevt, STARFIVE_TIMER_MOD_CONTIN); + starfive_timer_set_load(clkevt, clkevt->periodic); + + return starfive_timer_int_init_enable(clkevt); +} + +static int starfive_timer_set_oneshot(struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + starfive_timer_disable(clkevt); + starfive_timer_set_mod(clkevt, STARFIVE_TIMER_MOD_SINGLE); + starfive_timer_set_load(clkevt, STARFIVE_TIMER_MAX_TICKS); + + return starfive_timer_int_init_enable(clkevt); +} + +static int starfive_timer_set_next_event(unsigned long next, + struct clock_event_device *evt) +{ + struct starfive_clkevt *clkevt = to_starfive_clkevt(evt); + + starfive_timer_disable(clkevt); + starfive_timer_set_mod(clkevt, STARFIVE_TIMER_MOD_SINGLE); + starfive_timer_set_load(clkevt, next); + starfive_timer_enable(clkevt); + + return 0; +} + +static void starfive_set_clockevent(struct clock_event_device *evt) +{ + evt->features = CLOCK_EVT_FEAT_PERIODIC | + CLOCK_EVT_FEAT_ONESHOT | + CLOCK_EVT_FEAT_DYNIRQ; + evt->set_state_shutdown = starfive_timer_shutdown; + evt->set_state_periodic = starfive_timer_set_periodic; + evt->set_state_oneshot = starfive_timer_set_oneshot; + evt->set_state_oneshot_stopped = starfive_timer_shutdown; + evt->tick_resume = starfive_timer_tick_resume; + evt->set_next_event = starfive_timer_set_next_event; + evt->suspend = starfive_timer_suspend; + evt->resume = starfive_timer_resume; + evt->rating = STARFIVE_CLOCKEVENT_RATING; +} + +static void starfive_clockevents_register(struct starfive_clkevt *clkevt) +{ + clkevt->rate = clk_get_rate(clkevt->clk); + clkevt->periodic = DIV_ROUND_CLOSEST(clkevt->rate, HZ); + + starfive_set_clockevent(&clkevt->evt); + clkevt->evt.name = clkevt->name; + clkevt->evt.irq = clkevt->irq; + clkevt->evt.cpumask = cpu_possible_mask; + + clockevents_config_and_register(&clkevt->evt, clkevt->rate, + STARFIVE_TIMER_MIN_TICKS, STARFIVE_TIMER_MAX_TICKS); +} + +static void __init starfive_clkevt_base_init(const struct starfive_timer_chan_base *timer, + struct starfive_clkevt *clkevt, + void __iomem *base, int ch) +{ + void __iomem *channel_base; + + channel_base = base + timer->channel_base[ch]; + clkevt->base = channel_base; + clkevt->ctrl = channel_base + timer->ctrl; + clkevt->load = channel_base + timer->load; + clkevt->enable = channel_base + timer->enable; + clkevt->reload = channel_base + timer->reload; + clkevt->value = channel_base + timer->value; + clkevt->intclr = channel_base + timer->intclr; + clkevt->intmask = channel_base + timer->intmask; +} + +static int __init starfive_timer_probe(struct platform_device *pdev) +{ + const struct starfive_timer_chan_base *timer_base = of_device_get_match_data(&pdev->dev); + char name[10]; + struct starfive_timer_priv *priv; + struct starfive_clkevt *clkevt; + struct clk *pclk; + struct reset_control *rst; + int ch; + int ret; + + priv = devm_kzalloc(&pdev->dev, struct_size(priv, clkevt, timer_base->channel_num), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(priv->base)) + return dev_err_probe(&pdev->dev, PTR_ERR(priv->base), + "failed to map registers\n"); + + rst = devm_reset_control_get_exclusive(&pdev->dev, "apb"); + if (IS_ERR(rst)) + return dev_err_probe(&pdev->dev, PTR_ERR(rst), "failed to get apb reset\n"); + + pclk = devm_clk_get_enabled(&pdev->dev, "apb"); + if (IS_ERR(pclk)) + return dev_err_probe(&pdev->dev, PTR_ERR(pclk), + "failed to get & enable apb clock\n"); + + ret = reset_control_deassert(rst); + if (ret) + goto err; + + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + for (ch = 0; ch < timer_base->channel_num; ch++) { + clkevt = &priv->clkevt[ch]; + snprintf(name, sizeof(name), "ch%d", ch); + + starfive_clkevt_base_init(timer_base, clkevt, priv->base, ch); + /* Ensure timers are disabled */ + starfive_timer_disable(clkevt); + + rst = devm_reset_control_get_exclusive(&pdev->dev, name); + if (IS_ERR(rst)) { + ret = PTR_ERR(rst); + goto err; + } + + clkevt->clk = devm_clk_get_enabled(&pdev->dev, name); + if (IS_ERR(clkevt->clk)) { + ret = PTR_ERR(clkevt->clk); + goto err; + } + + ret = reset_control_deassert(rst); + if (ret) + goto ch_err; + + clkevt->irq = platform_get_irq(pdev, ch); + if (clkevt->irq < 0) { + ret = clkevt->irq; + goto ch_err; + } + + snprintf(clkevt->name, sizeof(clkevt->name), "%s.ch%d", pdev->name, ch); + starfive_clockevents_register(clkevt); + + ret = devm_request_irq(&pdev->dev, clkevt->irq, starfive_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, + clkevt->name, &clkevt->evt); + if (ret) + goto ch_err; + + ret = starfive_clocksource_init(clkevt); + if (ret) + goto ch_err; + } + + return 0; + +ch_err: + /* Only unregister the failed channel and the rest timer channels continue to work. */ + clk_disable_unprepare(clkevt->clk); +err: + /* If no other channel successfully registers, pclk should be disabled. */ + if (!ch) + clk_disable_unprepare(pclk); + + return ret; +} + +static const struct of_device_id starfive_timer_match[] = { + { .compatible = "starfive,jh7110-timer", .data = &starfive_timer_jh7110_base }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, starfive_timer_match); + +static struct platform_driver starfive_timer_driver = { + .probe = starfive_timer_probe, + .driver = { + .name = "starfive-timer", + .of_match_table = starfive_timer_match, + }, +}; +module_platform_driver(starfive_timer_driver); + +MODULE_AUTHOR("Xingyu Wu "); +MODULE_DESCRIPTION("StarFive timer driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/clocksource/timer-starfive.h b/drivers/clocksource/timer-starfive.h new file mode 100644 index 000000000000..62eb630cc98d --- /dev/null +++ b/drivers/clocksource/timer-starfive.h @@ -0,0 +1,96 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2022 StarFive Technology Co., Ltd. + */ + +#ifndef __STARFIVE_TIMER_H__ +#define __STARFIVE_TIMER_H__ + +/* Bias: Ch0-0x0, Ch1-0x40, Ch2-0x80, and so on. */ +#define STARFIVE_TIMER_CH_LEN 0x40 +#define STARFIVE_TIMER_CH_BASE(x) ((STARFIVE_TIMER_CH_##x) * STARFIVE_TIMER_CH_LEN) + +#define STARFIVE_CLOCK_SOURCE_RATING 200 +#define STARFIVE_VALID_BITS 32 +#define STARFIVE_DELAY_US 0 +#define STARFIVE_TIMEOUT_US 10000 +#define STARFIVE_CLOCKEVENT_RATING 300 +#define STARFIVE_TIMER_MAX_TICKS 0xffffffff +#define STARFIVE_TIMER_MIN_TICKS 0xf + +#define STARFIVE_TIMER_JH7110_INT_STATUS 0x00 /* RO[0:4]: Interrupt Status for channel0~4 */ +#define STARFIVE_TIMER_JH7110_CTL 0x04 /* RW[0]: 0-continuous run, 1-single run */ +#define STARFIVE_TIMER_JH7110_LOAD 0x08 /* RW: load value to counter */ +#define STARFIVE_TIMER_JH7110_ENABLE 0x10 /* RW[0]: timer enable register */ +#define STARFIVE_TIMER_JH7110_RELOAD 0x14 /* RW: write 1 or 0 both reload counter */ +#define STARFIVE_TIMER_JH7110_VALUE 0x18 /* RO: timer value register */ +#define STARFIVE_TIMER_JH7110_INT_CLR 0x20 /* RW: timer interrupt clear register */ +#define STARFIVE_TIMER_JH7110_INT_MASK 0x24 /* RW[0]: timer interrupt mask register */ +#define STARFIVE_TIMER_JH7110_INT_CLR_AVA_MASK BIT(1) + +enum STARFIVE_TIMER_CH { + STARFIVE_TIMER_CH_0 = 0, + STARFIVE_TIMER_CH_1, + STARFIVE_TIMER_CH_2, + STARFIVE_TIMER_CH_3, + STARFIVE_TIMER_CH_4, + STARFIVE_TIMER_CH_5, + STARFIVE_TIMER_CH_6, + STARFIVE_TIMER_CH_7, + STARFIVE_TIMER_CH_MAX +}; + +enum STARFIVE_TIMER_INTMASK { + STARFIVE_TIMER_INTMASK_DIS = 0, + STARFIVE_TIMER_INTMASK_ENA = 1 +}; + +enum STARFIVE_TIMER_MOD { + STARFIVE_TIMER_MOD_CONTIN = 0, + STARFIVE_TIMER_MOD_SINGLE = 1 +}; + +enum STARFIVE_TIMER_CTL_EN { + STARFIVE_TIMER_DIS = 0, + STARFIVE_TIMER_ENA = 1 +}; + +struct starfive_timer_chan_base { + /* Resgister */ + unsigned int ctrl; + unsigned int load; + unsigned int enable; + unsigned int reload; + unsigned int value; + unsigned int intclr; + unsigned int intmask; + + unsigned int channel_num; /* timer channel numbers */ + unsigned int channel_base[]; +}; + +struct starfive_clkevt { + struct clock_event_device evt; + struct clk *clk; + char name[20]; + int irq; + u32 periodic; + u32 rate; + u32 reload_val; + void __iomem *base; + void __iomem *ctrl; + void __iomem *load; + void __iomem *enable; + void __iomem *reload; + void __iomem *value; + void __iomem *intclr; + void __iomem *intmask; +}; + +struct starfive_timer_priv { + struct device *dev; + void __iomem *base; + struct starfive_clkevt clkevt[]; +}; + +#endif /* __STARFIVE_TIMER_H__ */ From patchwork Mon Mar 20 13:54:33 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xingyu Wu X-Patchwork-Id: 72178 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a5d:604a:0:0:0:0:0 with SMTP id j10csp1241308wrt; Mon, 20 Mar 2023 07:15:16 -0700 (PDT) X-Google-Smtp-Source: AK7set8sTwFfTgWnKU5E0DTr/xKA/QBQXSqz5jDdIeno/Wp6yqjntcmAFLZsWrWB2xfgB1gEEcLn X-Received: by 2002:a05:6a20:3aaf:b0:d9:9bc2:8904 with SMTP id d47-20020a056a203aaf00b000d99bc28904mr3651077pzh.56.1679321715995; Mon, 20 Mar 2023 07:15:15 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1679321715; cv=none; d=google.com; s=arc-20160816; b=ofQ2rEs0SQ/u00XNXL1FD2W4TxRiPqJd9OkQFgdLZQM+5PPFCM0MxfAu+FkdfJ03J0 /zT9/YJReNGOeT3nLI5qZVVbGdHYqD4Mx299ZRsEprVOwleY26kiUoxM15p5DNFRRvqe nlZH/3Z3S+qtyMeHXLv8Qu/2EAbC//MFkXw9LPbWyXCFNbCps1eVU1O/RXdv0ELl8rQx Lr9U1kVtyee34IVRPoNuW2DgkP3SHkGdg8EykqrLs3N7k6DADtxh9FYrXiHVQlkeKwjO u5c2mIg8sfV7BdCPkJi+oEmKAZxZlC1aVdVR7KYTATOrjxJ+gIJXkT6u8+t1Ph3OJ6Wi AvXQ== ARC-Message-Signature: i=1; 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[2620:137:e000::1:20]) by mx.google.com with ESMTP id k1-20020aa788c1000000b005ee01126a92si11054396pff.120.2023.03.20.07.14.59; Mon, 20 Mar 2023 07:15:15 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231569AbjCTNzZ convert rfc822-to-8bit (ORCPT + 99 others); Mon, 20 Mar 2023 09:55:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41046 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231775AbjCTNzA (ORCPT ); Mon, 20 Mar 2023 09:55:00 -0400 Received: from ex01.ufhost.com (ex01.ufhost.com [61.152.239.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6D36312590; Mon, 20 Mar 2023 06:54:44 -0700 (PDT) Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by ex01.ufhost.com (Postfix) with ESMTP id 7E2C024E1F4; Mon, 20 Mar 2023 21:54:37 +0800 (CST) Received: from EXMBX061.cuchost.com (172.16.6.61) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:37 +0800 Received: from localhost.localdomain (183.27.97.64) by EXMBX061.cuchost.com (172.16.6.61) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 20 Mar 2023 21:54:36 +0800 From: Xingyu Wu To: , , "Daniel Lezcano" , Thomas Gleixner , Krzysztof Kozlowski CC: Rob Herring , Paul Walmsley , Palmer Dabbelt , Albert Ou , Philipp Zabel , Xingyu Wu , Samin Guo , , Conor Dooley Subject: [PATCH v2 3/3] riscv: dts: jh7110: starfive: Add timer node Date: Mon, 20 Mar 2023 21:54:33 +0800 Message-ID: <20230320135433.144832-4-xingyu.wu@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230320135433.144832-1-xingyu.wu@starfivetech.com> References: <20230320135433.144832-1-xingyu.wu@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [183.27.97.64] X-ClientProxiedBy: EXCAS066.cuchost.com (172.16.6.26) To EXMBX061.cuchost.com (172.16.6.61) X-YovoleRuleAgent: yovoleflag X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1760896447600394949?= X-GMAIL-MSGID: =?utf-8?q?1760896447600394949?= Add the timer node for the Starfive JH7110 SoC. Signed-off-by: Xingyu Wu --- arch/riscv/boot/dts/starfive/jh7110.dtsi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi index d484ecdf93f7..fbd0a510ca1b 100644 --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi @@ -478,6 +478,26 @@ sysgpio: pinctrl@13040000 { #gpio-cells = <2>; }; + timer@13050000 { + compatible = "starfive,jh7110-timer"; + reg = <0x0 0x13050000 0x0 0x10000>; + interrupts = <69>, <70>, <71> ,<72>; + clocks = <&syscrg JH7110_SYSCLK_TIMER_APB>, + <&syscrg JH7110_SYSCLK_TIMER0>, + <&syscrg JH7110_SYSCLK_TIMER1>, + <&syscrg JH7110_SYSCLK_TIMER2>, + <&syscrg JH7110_SYSCLK_TIMER3>; + clock-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + resets = <&syscrg JH7110_SYSRST_TIMER_APB>, + <&syscrg JH7110_SYSRST_TIMER0>, + <&syscrg JH7110_SYSRST_TIMER1>, + <&syscrg JH7110_SYSRST_TIMER2>, + <&syscrg JH7110_SYSRST_TIMER3>; + reset-names = "apb", "ch0", "ch1", + "ch2", "ch3"; + }; + aoncrg: clock-controller@17000000 { compatible = "starfive,jh7110-aoncrg"; reg = <0x0 0x17000000 0x0 0x10000>;