From patchwork Wed Feb 13 21:40:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Moon X-Patchwork-Id: 10810907 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEA7713B4 for ; Wed, 13 Feb 2019 21:41:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD66F2DF08 for ; Wed, 13 Feb 2019 21:41:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C0F6E2DF57; Wed, 13 Feb 2019 21:41:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 03D202DF08 for ; Wed, 13 Feb 2019 21:41:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391199AbfBMVlS (ORCPT ); Wed, 13 Feb 2019 16:41:18 -0500 Received: from mail-pg1-f196.google.com ([209.85.215.196]:43204 "EHLO mail-pg1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730927AbfBMVlS (ORCPT ); Wed, 13 Feb 2019 16:41:18 -0500 Received: by mail-pg1-f196.google.com with SMTP id v28so1780303pgk.10; Wed, 13 Feb 2019 13:41:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=irYv0xqfxLq9eyi1hZL6+OFFikwsolagLNKzHmLmsDI=; b=fSmuiGaLyJQY2gMc8QKrxHYpM/QBJuMTPyej4qwJ4LBaAEOrEQixJ/O93WT+TdRN4C QNHGo79Rc6gvUeSHCJlns1okxy7sFWx/UG3XrPUq46OlI0C9jhOlaQkr7wALsOV9RWe0 ZresE/vLbLm+8+CU88rXXKJSroDhs43s46dM9SLR9jj3qmXYl3RAocpv7FzOX337ArAO we1RulDUcgyMWmmeCcB0pQ9KcvaXlCXVquoENEXkQASGxupARbDvojUR4A1o3qXpOt+x RF1ThrQPvmIuL1hoj2xunaNUzvf3W53ewlA8u/TlRgdIID3ntd3ivs+iFjcKV0bb0Iss Zicw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=irYv0xqfxLq9eyi1hZL6+OFFikwsolagLNKzHmLmsDI=; b=XDIbl/8rkyigqRJ+nve+UBiK3FQc2mVtFrH2Uv2A5KE+c/mRCtlFTOQxUIoEpj9CxY qvcc4IkZ+JDgJVkQSVFflDMm9s0RdPgd9LC3BNSIMGzp/G0597bJF4q2oVeBVzJOQRpO KFewt8jL8SO3uvWhZML6htxf6lrGAmru9dklxuzZ4ovDXIFVfXXVVfGDdOwoq7zXNnDX p7T+i01ktH9VXRAjTBI23Jtyu2QwDCQ6F6vs1kBVpyeFSkfD2KSCfBo+4jlwwD4rtGES uZIy0wXwD8S06JltP6xnpNx/Q94X0pu5cIKQ+UNeGr5wX66oLFHA8SXmn1nrV13/Ehmr X8bw== X-Gm-Message-State: AHQUAuZ47oWN+mz69Zkf6J1P6Mvsgb4uhBIyVdyxn6Vpk5wrBP8bdYmQ 6zq+ygSc03TWN9qmdQjASNCcKbD+ X-Google-Smtp-Source: AHgI3IYyzFpAT4H0kv5rJUFUvP0YLTaqWAkByRWTtEuPVJlryBPzkD7gPOtHjQ9fKGj9WkLAw979Qw== X-Received: by 2002:a65:5c4b:: with SMTP id v11mr253368pgr.333.1550094076803; Wed, 13 Feb 2019 13:41:16 -0800 (PST) Received: from localhost.localdomain ([103.51.74.137]) by smtp.gmail.com with ESMTPSA id w128sm335321pfw.79.2019.02.13.13.41.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 Feb 2019 13:41:16 -0800 (PST) From: Anand Moon To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Rob Herring , Kukjin Kim , Krzysztof Kozlowski , Marek Szyprowski , Tomasz Figa , Chanwoo Choi , Pankaj Dubey Subject: [RFC 1/2] ARM: dts: exynos: Add proper regulator states for suspend-to-mem for odroid-u3 Date: Wed, 13 Feb 2019 21:40:51 +0000 Message-Id: <20190213214052.2427-2-linux.amoon@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190213214052.2427-1-linux.amoon@gmail.com> References: <20190213214052.2427-1-linux.amoon@gmail.com> MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add suspend-to-mem node to regulator core to be enabled or disabled during system suspend and also support changing the regulator operating mode during runtime and when the system enter sleep mode. Cc: Marek Szyprowski Cc: Krzysztof Kozlowski Cc: Chanwoo Choi Signed-off-by: Anand Moon --- Changes from previos patch [0] https://patchwork.kernel.org/patch/10712549/ Set all the WAKEUP source regulator in suspend-on state. LD04, LD012, LD015, LD020, LD022 Set all the non used regulator in suspend-odd state LD02, LD03, LD05, LD06, LD07, LD011, LD013, LDO14, LD016 BUCK5, BUCK6, BUCK7 and not confirable as per driver max77686-regulator Tested on microSD card and it resumes correcly after suspend. eMMC is not able to resume after entering into suspend state, which need to be investigated and how to debug more. --- .../boot/dts/exynos4412-odroid-common.dtsi | 63 +++++++++++++++++++ arch/arm/boot/dts/exynos4412-odroidu3.dts | 3 + 2 files changed, 66 insertions(+) diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi index 08d3a0a7b4eb..e984461c37d9 100644 --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi @@ -288,6 +288,9 @@ regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo3_reg: LDO3 { @@ -295,6 +298,9 @@ regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo4_reg: LDO4 { @@ -302,6 +308,9 @@ regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; regulator-boot-on; + regulator-state-mem { + regulator-on-in-suspend; + }; }; ldo5_reg: LDO5 { @@ -310,6 +319,9 @@ regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo6_reg: LDO6 { @@ -317,6 +329,9 @@ regulator-min-microvolt = <1000000>; regulator-max-microvolt = <1000000>; regulator-always-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo7_reg: LDO7 { @@ -324,18 +339,27 @@ regulator-min-microvolt = <1000000>; regulator-max-microvolt = <1000000>; regulator-always-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo8_reg: LDO8 { regulator-name = "VDD10_HDMI_1.0V"; regulator-min-microvolt = <1000000>; regulator-max-microvolt = <1000000>; + regulator-state-mem { + regulator-on-in-suspend; + }; }; ldo10_reg: LDO10 { regulator-name = "VDDQ_MIPIHSI_1.8V"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; + regulator-state-mem { + regulator-on-in-suspend; + }; }; ldo11_reg: LDO11 { @@ -343,6 +367,9 @@ regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo12_reg: LDO12 { @@ -351,6 +378,9 @@ regulator-max-microvolt = <3300000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo13_reg: LDO13 { @@ -359,6 +389,9 @@ regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo14_reg: LDO14 { @@ -367,6 +400,9 @@ regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo15_reg: LDO15 { @@ -375,6 +411,9 @@ regulator-max-microvolt = <1000000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo16_reg: LDO16 { @@ -383,6 +422,9 @@ regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; ldo20_reg: LDO20 { @@ -396,6 +438,9 @@ regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; regulator-boot-on; + regulator-state-mem { + regulator-on-in-suspend; + }; }; ldo22_reg: LDO22 { @@ -405,6 +450,9 @@ */ regulator-name = "LDO22"; regulator-boot-on; + regulator-state-mem { + regulator-on-in-suspend; + }; }; ldo25_reg: LDO25 { @@ -413,6 +461,9 @@ regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; buck1_reg: BUCK1 { @@ -421,6 +472,9 @@ regulator-max-microvolt = <1100000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; buck2_reg: BUCK2 { @@ -429,6 +483,9 @@ regulator-max-microvolt = <1350000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-on-in-suspend; + }; }; buck3_reg: BUCK3 { @@ -437,6 +494,9 @@ regulator-max-microvolt = <1050000>; regulator-always-on; regulator-boot-on; + regulator-state-mem { + regulator-off-in-suspend; + }; }; buck4_reg: BUCK4 { @@ -444,6 +504,9 @@ regulator-min-microvolt = <900000>; regulator-max-microvolt = <1100000>; regulator-microvolt-offset = <50000>; + regulator-state-mem { + regulator-off-in-suspend; + }; }; buck5_reg: BUCK5 { diff --git a/arch/arm/boot/dts/exynos4412-odroidu3.dts b/arch/arm/boot/dts/exynos4412-odroidu3.dts index 2bdf899df436..4ebde09fc51d 100644 --- a/arch/arm/boot/dts/exynos4412-odroidu3.dts +++ b/arch/arm/boot/dts/exynos4412-odroidu3.dts @@ -82,6 +82,9 @@ regulator-name = "LDO22_VDDQ_MMC4_2.8V"; regulator-min-microvolt = <2800000>; regulator-max-microvolt = <2800000>; + regulator-state-mem { + regulator-on-in-suspend; + }; }; &mshc_0 { From patchwork Wed Feb 13 21:40:52 2019 Content-Type: text/plain; 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Wed, 13 Feb 2019 13:41:20 -0800 (PST) From: Anand Moon To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Rob Herring , Kukjin Kim , Krzysztof Kozlowski , Marek Szyprowski , Tomasz Figa , Chanwoo Choi , Pankaj Dubey Subject: [RFC 2/2] soc: samsung: pmu: Add the PMU data of exynos4412 to support low-power state Date: Wed, 13 Feb 2019 21:40:52 +0000 Message-Id: <20190213214052.2427-3-linux.amoon@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190213214052.2427-1-linux.amoon@gmail.com> References: <20190213214052.2427-1-linux.amoon@gmail.com> MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds configration for PMU (Power Management Unit) state tuning for exynos4412 SoC in order to enter low-power mode during suspend power modes and help resume from suspend state. Fixes: bfce552d0b1 ("drivers: soc: Add support for Exynos PMU driver") Cc: Marek Szyprowski Cc: Krzysztof Kozlowski Cc: Chanwoo Choi Signed-off-by: Anand Moon --- Changes from previous patch. New patch to this series to support suspend and resume state Changes have been tested on microSD card but fails to resume on cMMC. It need to be investigated and more debuging --- drivers/soc/samsung/exynos4-pmu.c | 83 +++++++++++++++++++++ include/linux/soc/samsung/exynos-regs-pmu.h | 21 ++++++ 2 files changed, 104 insertions(+) diff --git a/drivers/soc/samsung/exynos4-pmu.c b/drivers/soc/samsung/exynos4-pmu.c index a7cdbf1aac0c..d261a0d2371e 100644 --- a/drivers/soc/samsung/exynos4-pmu.c +++ b/drivers/soc/samsung/exynos4-pmu.c @@ -200,10 +200,93 @@ static const struct exynos_pmu_conf exynos4412_pmu_config[] = { { PMU_TABLE_END,}, }; +static unsigned int const exynos4412_list_feed[] = { + EXYNOS4_ARM_CORE0_OPTION, + EXYNOS4_ARM_CORE1_OPTION, + EXYNOS4_ARM_CORE2_OPTION, + EXYNOS4_ARM_CORE3_OPTION, + EXYNOS4_ARM_COMMON_OPTION, + EXYNOS4_CAM_OPTION, + EXYNOS4_TV_OPTION, + EXYNOS4_MFC_OPTION, + EXYNOS4_G3D_OPTION, + EXYNOS4_LCD0_OPTION, + EXYNOS4_ISP_OPTION, + EXYNOS4_MAUDIO_OPTION, + EXYNOS4_GPS_OPTION, + EXYNOS4_GPS_ALIVE_OPTION, +}; + +static void exynos4412_pmu_central_seq(bool enable) +{ + unsigned int value; + + value = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION); + if (enable) + value &= ~S5P_CENTRAL_LOWPWR_CFG; + else + value |= S5P_CENTRAL_LOWPWR_CFG; + pmu_raw_writel(value, S5P_CENTRAL_SEQ_CONFIGURATION); + + value = pmu_raw_readl(S5P_CENTRAL_SEQ_CONFIGURATION_COREBLK); + if (enable) + value &= ~S5P_CENTRAL_LOWPWR_CFG; + else + value |= S5P_CENTRAL_LOWPWR_CFG; + pmu_raw_writel(value, S5P_CENTRAL_SEQ_CONFIGURATION_COREBLK); +} + +static void exynos4412_pmu_init(void) +{ + unsigned int value; + int i; + + /* Enable USE_STANDBY_WFI for all CORE */ + pmu_raw_writel(S5P_USE_STANDBY_WFI_ALL, S5P_CENTRAL_SEQ_OPTION); + + /* Decides whether to use retention capability */ + value = pmu_raw_readl(S5P_ARM_L2_0_OPTION); + value &= ~EXYNOS_L2_USE_RETENTION; + pmu_raw_writel(value, S5P_ARM_L2_0_OPTION); + + value = pmu_raw_readl(S5P_ARM_L2_1_OPTION); + value &= ~EXYNOS_L2_USE_RETENTION; + pmu_raw_writel(value, S5P_ARM_L2_1_OPTION); + + /* Set PSHOLD port for output high */ + value = pmu_raw_readl(S5P_PS_HOLD_CONTROL); + value |= S5P_PS_HOLD_OUTPUT_HIGH; + pmu_raw_writel(value, S5P_PS_HOLD_CONTROL); + + /* Enable signal for PSHOLD port */ + value = pmu_raw_readl(S5P_PS_HOLD_CONTROL); + value |= S5P_PS_HOLD_EN; + pmu_raw_writel(value, S5P_PS_HOLD_CONTROL); + + /* Enable only SC_FEEDBACK */ + for (i = 0; i < ARRAY_SIZE(exynos4412_list_feed); i++) { + value = pmu_raw_readl(exynos4412_list_feed[i]); + value &= ~(EXYNOS_USE_SC_COUNTER); + value |= EXYNOS_USE_SC_FEEDBACK; + pmu_raw_writel(value, exynos4412_list_feed[i]); + } + + exynos4412_pmu_central_seq(false); + + pr_info("EXYNOS4x12 PMU Initialize\n"); +} + +static void exynos4412_powerdown_conf(enum sys_powerdown mode) +{ + exynos4412_pmu_central_seq(true); +} + const struct exynos_pmu_data exynos4210_pmu_data = { .pmu_config = exynos4210_pmu_config, }; const struct exynos_pmu_data exynos4412_pmu_data = { .pmu_config = exynos4412_pmu_config, + .pmu_init = exynos4412_pmu_init, + .powerdown_conf = exynos4412_powerdown_conf, }; diff --git a/include/linux/soc/samsung/exynos-regs-pmu.h b/include/linux/soc/samsung/exynos-regs-pmu.h index 5addaf5ccbce..6beed3e669d2 100644 --- a/include/linux/soc/samsung/exynos-regs-pmu.h +++ b/include/linux/soc/samsung/exynos-regs-pmu.h @@ -16,6 +16,8 @@ #define S5P_CENTRAL_SEQ_CONFIGURATION 0x0200 +#define S5P_CENTRAL_SEQ_CONFIGURATION_COREBLK 0x0240 + #define S5P_CENTRAL_LOWPWR_CFG (1 << 16) #define S5P_CENTRAL_SEQ_OPTION 0x0208 @@ -347,6 +349,25 @@ #define EXYNOS3_OPTION_USE_SC_FEEDBACK (1 << 1) #define EXYNOS3_OPTION_SKIP_DEACTIVATE_ACEACP_IN_PWDN (1 << 7) +/* EXYNOS4 */ +#define EXYNOS_USE_SC_FEEDBACK BIT(1) +#define EXYNOS_USE_SC_COUNTER BIT(0) + +#define EXYNOS4_ARM_CORE0_OPTION 0x2008 +#define EXYNOS4_ARM_CORE1_OPTION 0x2088 +#define EXYNOS4_ARM_CORE2_OPTION 0x2108 +#define EXYNOS4_ARM_CORE3_OPTION 0x2188 +#define EXYNOS4_ARM_COMMON_OPTION 0x2408 +#define EXYNOS4_CAM_OPTION 0x3C08 +#define EXYNOS4_TV_OPTION 0x3C28 +#define EXYNOS4_MFC_OPTION 0x3C48 +#define EXYNOS4_G3D_OPTION 0x3C68 +#define EXYNOS4_LCD0_OPTION 0x3C88 +#define EXYNOS4_ISP_OPTION 0x3CA8 +#define EXYNOS4_MAUDIO_OPTION 0x3CC8 +#define EXYNOS4_GPS_OPTION 0x3CE8 +#define EXYNOS4_GPS_ALIVE_OPTION 0x3D08 + /* For EXYNOS5 */ #define EXYNOS5_AUTO_WDTRESET_DISABLE 0x0408