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[76.88.115.8]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c6ba6f14sm100739465ad.111.2025.03.18.16.00.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 16:00:54 -0700 (PDT) From: Sukrut Bellary To: Kevin Hilman , Russell King , Rob Herring , Tony Lindgren , Krzysztof Kozlowski , Nishanth Menon , Ulf Hansson Cc: Sukrut Bellary , Aaro Koskinen , Andreas Kemnade , Roger Quadros , Conor Dooley , Santosh Shilimkar , Bajjuri Praneeth , Raghavendra Vignesh , Bin Liu , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 1/4] ARM: OMAP2+: Fix l4ls clk domain handling in STANDBY Date: Tue, 18 Mar 2025 16:00:39 -0700 Message-Id: <20250318230042.3138542-2-sbellary@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250318230042.3138542-1-sbellary@baylibre.com> References: <20250318230042.3138542-1-sbellary@baylibre.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Don't put the l4ls clk domain to sleep in case of standby. Since CM3 PM FW[1](ti-v4.1.y) doesn't wake-up/enable the l4ls clk domain upon wake-up, CM3 PM FW fails to wake-up the MPU. [1] https://git.ti.com/cgit/processor-firmware/ti-amx3-cm3-pm-firmware/ Signed-off-by: Sukrut Bellary --- arch/arm/mach-omap2/clockdomain.h | 1 + arch/arm/mach-omap2/clockdomains33xx_data.c | 2 +- arch/arm/mach-omap2/cm33xx.c | 14 +++++++++++++- 3 files changed, 15 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index c36fb2721261..86a2f9e5d0ef 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -48,6 +48,7 @@ #define CLKDM_NO_AUTODEPS (1 << 4) #define CLKDM_ACTIVE_WITH_MPU (1 << 5) #define CLKDM_MISSING_IDLE_REPORTING (1 << 6) +#define CLKDM_STANDBY_FORCE_WAKEUP BIT(7) #define CLKDM_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO) #define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP) diff --git a/arch/arm/mach-omap2/clockdomains33xx_data.c b/arch/arm/mach-omap2/clockdomains33xx_data.c index 87f4e927eb18..c05a3c07d448 100644 --- a/arch/arm/mach-omap2/clockdomains33xx_data.c +++ b/arch/arm/mach-omap2/clockdomains33xx_data.c @@ -19,7 +19,7 @@ static struct clockdomain l4ls_am33xx_clkdm = { .pwrdm = { .name = "per_pwrdm" }, .cm_inst = AM33XX_CM_PER_MOD, .clkdm_offs = AM33XX_CM_PER_L4LS_CLKSTCTRL_OFFSET, - .flags = CLKDM_CAN_SWSUP, + .flags = CLKDM_CAN_SWSUP | CLKDM_STANDBY_FORCE_WAKEUP, }; static struct clockdomain l3s_am33xx_clkdm = { diff --git a/arch/arm/mach-omap2/cm33xx.c b/arch/arm/mach-omap2/cm33xx.c index acdf72a541c0..a4dd42abda89 100644 --- a/arch/arm/mach-omap2/cm33xx.c +++ b/arch/arm/mach-omap2/cm33xx.c @@ -20,6 +20,9 @@ #include "cm-regbits-34xx.h" #include "cm-regbits-33xx.h" #include "prm33xx.h" +#if IS_ENABLED(CONFIG_SUSPEND) +#include +#endif /* * CLKCTRL_IDLEST_*: possible values for the CM_*_CLKCTRL.IDLEST bitfield: @@ -328,8 +331,17 @@ static int am33xx_clkdm_clk_disable(struct clockdomain *clkdm) { bool hwsup = false; +#if IS_ENABLED(CONFIG_SUSPEND) + /* + * In case of standby, Don't put the l4ls clk domain to sleep. + * Since CM3 PM FW doesn't wake-up/enable the l4ls clk domain + * upon wake-up, CM3 PM FW fails to wake-up th MPU. + */ + if (pm_suspend_target_state == PM_SUSPEND_STANDBY && + (clkdm->flags & CLKDM_STANDBY_FORCE_WAKEUP)) + return 0; +#endif hwsup = am33xx_cm_is_clkdm_in_hwsup(clkdm->cm_inst, clkdm->clkdm_offs); - if (!hwsup && (clkdm->flags & CLKDM_CAN_FORCE_SLEEP)) am33xx_clkdm_sleep(clkdm); 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[76.88.115.8]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c6ba6f14sm100739465ad.111.2025.03.18.16.00.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 16:00:56 -0700 (PDT) From: Sukrut Bellary To: Kevin Hilman , Russell King , Rob Herring , Tony Lindgren , Krzysztof Kozlowski , Nishanth Menon , Ulf Hansson Cc: Sukrut Bellary , Aaro Koskinen , Andreas Kemnade , Roger Quadros , Conor Dooley , Santosh Shilimkar , Bajjuri Praneeth , Raghavendra Vignesh , Bin Liu , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 2/4] pmdomain: ti: Fix STANDBY handling of PER power domain Date: Tue, 18 Mar 2025 16:00:40 -0700 Message-Id: <20250318230042.3138542-3-sbellary@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250318230042.3138542-1-sbellary@baylibre.com> References: <20250318230042.3138542-1-sbellary@baylibre.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Per AM335x TRM[1](section 8.1.4.3 Power mode), in case of STANDBY, PER domain should be ON. So, fix the PER power domain handling on standby. [1] https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf Signed-off-by: Sukrut Bellary --- drivers/pmdomain/ti/omap_prm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/pmdomain/ti/omap_prm.c b/drivers/pmdomain/ti/omap_prm.c index b8ceb3c2b81c..7e36e675a8c6 100644 --- a/drivers/pmdomain/ti/omap_prm.c +++ b/drivers/pmdomain/ti/omap_prm.c @@ -18,7 +18,9 @@ #include #include #include - +#if IS_ENABLED(CONFIG_SUSPEND) +#include +#endif #include enum omap_prm_domain_mode { @@ -88,6 +90,7 @@ struct omap_reset_data { #define OMAP_PRM_HAS_RSTST BIT(1) #define OMAP_PRM_HAS_NO_CLKDM BIT(2) #define OMAP_PRM_RET_WHEN_IDLE BIT(3) +#define OMAP_PRM_ON_WHEN_STANDBY BIT(4) #define OMAP_PRM_HAS_RESETS (OMAP_PRM_HAS_RSTCTRL | OMAP_PRM_HAS_RSTST) @@ -404,7 +407,8 @@ static const struct omap_prm_data am3_prm_data[] = { .name = "per", .base = 0x44e00c00, .pwrstctrl = 0xc, .pwrstst = 0x8, .dmap = &omap_prm_noinact, .rstctrl = 0x0, .rstmap = am3_per_rst_map, - .flags = OMAP_PRM_HAS_RSTCTRL, .clkdm_name = "pruss_ocp" + .flags = OMAP_PRM_HAS_RSTCTRL | OMAP_PRM_ON_WHEN_STANDBY, + .clkdm_name = "pruss_ocp", }, { .name = "wkup", .base = 0x44e00d00, From patchwork Tue Mar 18 23:00:41 2025 Content-Type: text/plain; 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[76.88.115.8]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c6ba6f14sm100739465ad.111.2025.03.18.16.00.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 16:00:59 -0700 (PDT) From: Sukrut Bellary To: Kevin Hilman , Russell King , Rob Herring , Tony Lindgren , Krzysztof Kozlowski , Nishanth Menon , Ulf Hansson Cc: Sukrut Bellary , Aaro Koskinen , Andreas Kemnade , Roger Quadros , Conor Dooley , Santosh Shilimkar , Bajjuri Praneeth , Raghavendra Vignesh , Bin Liu , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 3/4] ARM: dts: am335x: Set wakeup-source for UART0 Date: Tue, 18 Mar 2025 16:00:41 -0700 Message-Id: <20250318230042.3138542-4-sbellary@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250318230042.3138542-1-sbellary@baylibre.com> References: <20250318230042.3138542-1-sbellary@baylibre.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On am335x evm[1], UART0(UART1-HW) has a wakeup capability. Set wakeup-source, which will be used in the omap serial driver to enable the device wakeup capability. [1] https://www.ti.com/tool/TMDXEVM3358 [2] AM335x TRM - https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf Signed-off-by: Sukrut Bellary --- arch/arm/boot/dts/ti/omap/am335x-evm.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/ti/omap/am335x-evm.dts b/arch/arm/boot/dts/ti/omap/am335x-evm.dts index 61bf8bcd4c4e..20222f82f21b 100644 --- a/arch/arm/boot/dts/ti/omap/am335x-evm.dts +++ b/arch/arm/boot/dts/ti/omap/am335x-evm.dts @@ -388,7 +388,7 @@ AM33XX_PADCONF(AM335X_PIN_UART0_RTSN, PIN_INPUT_PULLDOWN, MUX_MODE2) /* uart0_rt &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins>; - + wakeup-source; status = "okay"; }; From patchwork Tue Mar 18 23:00:42 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sukrut Bellary X-Patchwork-Id: 14021705 Received: from mail-pl1-f175.google.com (mail-pl1-f175.google.com [209.85.214.175]) (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 1525220897A for ; 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[76.88.115.8]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-225c6ba6f14sm100739465ad.111.2025.03.18.16.01.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Mar 2025 16:01:01 -0700 (PDT) From: Sukrut Bellary To: Kevin Hilman , Russell King , Rob Herring , Tony Lindgren , Krzysztof Kozlowski , Nishanth Menon , Ulf Hansson Cc: Sukrut Bellary , Aaro Koskinen , Andreas Kemnade , Roger Quadros , Conor Dooley , Santosh Shilimkar , Bajjuri Praneeth , Raghavendra Vignesh , Bin Liu , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 4/4] ARM: multi_v7_defconfig: Enable am335x PM configs Date: Tue, 18 Mar 2025 16:00:42 -0700 Message-Id: <20250318230042.3138542-5-sbellary@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250318230042.3138542-1-sbellary@baylibre.com> References: <20250318230042.3138542-1-sbellary@baylibre.com> Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Enable Power management related defconfigs for TI AM335x[1]. [1] AM335x TRM - https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf Signed-off-by: Sukrut Bellary --- arch/arm/configs/multi_v7_defconfig | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 37e3baa33b67..1d2600b5f975 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -985,6 +985,7 @@ CONFIG_EDAC=y CONFIG_EDAC_LAYERSCAPE=y CONFIG_EDAC_HIGHBANK_MC=y CONFIG_EDAC_HIGHBANK_L2=y +CONFIG_RTC_DRV_OMAP=y CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_AC100=y CONFIG_RTC_DRV_AS3722=y @@ -1095,6 +1096,7 @@ CONFIG_TEGRA_IOMMU_SMMU=y CONFIG_EXYNOS_IOMMU=y CONFIG_QCOM_IOMMU=y CONFIG_REMOTEPROC=y +CONFIG_WKUP_M3_RPROC=m CONFIG_OMAP_REMOTEPROC=m CONFIG_OMAP_REMOTEPROC_WATCHDOG=y CONFIG_KEYSTONE_REMOTEPROC=m @@ -1146,6 +1148,8 @@ CONFIG_ARCH_TEGRA_3x_SOC=y CONFIG_ARCH_TEGRA_114_SOC=y CONFIG_ARCH_TEGRA_124_SOC=y CONFIG_SOC_TI=y +CONFIG_AMX3_PM=m +CONFIG_WKUP_M3_IPC=m CONFIG_KEYSTONE_NAVIGATOR_QMSS=y CONFIG_KEYSTONE_NAVIGATOR_DMA=y CONFIG_RASPBERRYPI_POWER=y @@ -1162,6 +1166,7 @@ CONFIG_EXTCON_MAX77693=m CONFIG_EXTCON_MAX8997=m CONFIG_EXTCON_USB_GPIO=y CONFIG_TI_AEMIF=y +CONFIG_TI_EMIF_SRAM=m CONFIG_STM32_FMC2_EBI=y CONFIG_EXYNOS5422_DMC=m CONFIG_IIO=y