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[34.91.20.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5dcf1b73f8csm830235a12.8.2025.02.06.05.08.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Feb 2025 05:08:19 -0800 (PST) From: =?utf-8?q?Andr=C3=A9_Draszik?= Date: Thu, 06 Feb 2025 13:08:18 +0000 Subject: [PATCH 1/3] arm64: dts: exynos: gs101: drop explicit regmap from reboot nodes Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250206-gs101-renppt-dts-v1-1-cdfe993fb3c5@linaro.org> References: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> In-Reply-To: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> To: Peter Griffin , Tudor Ambarus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar Cc: Will McVicker , kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Draszik?= X-Mailer: b4 0.13.0 The regmap property for syscon-poweroff and syscon-reboot is unneeded here because the poweroff and reboot nodes are children of syscon already. It also is deprecated. We can just drop it to simplify the DT. Signed-off-by: Andr=C3=A9 Draszik Reviewed-by: Peter Griffin --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot= /dts/exynos/google/gs101.dtsi index 813f96089578..e78dcd506a5c 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1400,14 +1400,12 @@ pmu_system_controller: system-controller@17460000 { =20 poweroff: syscon-poweroff { compatible =3D "syscon-poweroff"; - regmap =3D <&pmu_system_controller>; offset =3D <0x3e9c>; /* PAD_CTRL_PWR_HOLD */ mask =3D <0x100>; /* reset value */ }; =20 reboot: syscon-reboot { compatible =3D "syscon-reboot"; - regmap =3D <&pmu_system_controller>; offset =3D <0x3a00>; /* SYSTEM_CONFIGURATION */ mask =3D <0x2>; /* SWRESET_SYSTEM */ value =3D <0x2>; /* reset value */ --=20 2.48.1.362.g079036d154-goog From nobody Mon Feb 9 03:31:14 2026 Received: from mail-ej1-f47.google.com (mail-ej1-f47.google.com [209.85.218.47]) (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 A46B91DF24B for ; 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[34.91.20.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5dcf1b73f8csm830235a12.8.2025.02.06.05.08.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Feb 2025 05:08:20 -0800 (PST) From: =?utf-8?q?Andr=C3=A9_Draszik?= Date: Thu, 06 Feb 2025 13:08:19 +0000 Subject: [PATCH 2/3] arm64: dts: exynos: gs101: align reboot and poweroff writes with downstream Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250206-gs101-renppt-dts-v1-2-cdfe993fb3c5@linaro.org> References: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> In-Reply-To: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> To: Peter Griffin , Tudor Ambarus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar Cc: Will McVicker , kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Draszik?= X-Mailer: b4 0.13.0 For power off, downstream only clears bit 8 and leaves all other bits untouched, whereas this here ends up setting bit 8 and clearing all others, due to how sysconf-poweroff parses the DT. For reboot, downstream writes 0x00000002 whereas this here ends up setting bit 1 only and leaving all others untouched. I noticed this discrepancy while debugging some reboot related differences between up- and downstream and it's useful to align the behaviour here. Signed-off-by: Andr=C3=A9 Draszik --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot= /dts/exynos/google/gs101.dtsi index e78dcd506a5c..4f45bfeb33c0 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1401,13 +1401,13 @@ pmu_system_controller: system-controller@17460000 { poweroff: syscon-poweroff { compatible =3D "syscon-poweroff"; offset =3D <0x3e9c>; /* PAD_CTRL_PWR_HOLD */ - mask =3D <0x100>; /* reset value */ + mask =3D <0x00000100>; + value =3D <0x0>; }; =20 reboot: syscon-reboot { compatible =3D "syscon-reboot"; offset =3D <0x3a00>; /* SYSTEM_CONFIGURATION */ - mask =3D <0x2>; /* SWRESET_SYSTEM */ value =3D <0x2>; /* reset value */ }; }; --=20 2.48.1.362.g079036d154-goog From nobody Mon Feb 9 03:31:14 2026 Received: from mail-ed1-f50.google.com (mail-ed1-f50.google.com [209.85.208.50]) (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 164242E64A for ; 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[34.91.20.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5dcf1b73f8csm830235a12.8.2025.02.06.05.08.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Feb 2025 05:08:20 -0800 (PST) From: =?utf-8?q?Andr=C3=A9_Draszik?= Date: Thu, 06 Feb 2025 13:08:20 +0000 Subject: [PATCH 3/3] arm64: dts: exynos: gs101: add reboot-mode support (SYSIP_DAT0) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250206-gs101-renppt-dts-v1-3-cdfe993fb3c5@linaro.org> References: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> In-Reply-To: <20250206-gs101-renppt-dts-v1-0-cdfe993fb3c5@linaro.org> To: Peter Griffin , Tudor Ambarus , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Alim Akhtar Cc: Will McVicker , kernel-team@android.com, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Draszik?= X-Mailer: b4 0.13.0 syscon-reboot-mode can be used to indicate the reboot mode for the bootloader. While not sufficient for all boot modes, the boot loader does use SYSIP_DAT0 (PMU + 0x0810) to determine some of the actions it should take. This change helps it deciding what to do in those cases. For complete support, we'll also have to write the boot mode to an NVMEM storage location, but we have no upstream driver for that yet. Nevertheless, this patch is a step towards full support for the boot mode. Note1: Android also uses 'shutdown,thermal' and shutdown,thermal,battery', but that can not be described in DT as ',' is used to denote vendor prefixes. I've left them out from here for that reason. Note2: downstream / bootloader recognizes one more mode: 'dm-verity device corrupted' with value 0x50, but we can not describe that in DT using a property name due to the space, so it's been left out from here as well. This string appears to come from drivers/md/dm-verity-target.c and should probably be changed there in a follow-up patch, so that it can be used in reboot-mode nodes like this one here. Signed-off-by: Andr=C3=A9 Draszik Reviewed-by: Peter Griffin --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot= /dts/exynos/google/gs101.dtsi index 4f45bfeb33c0..f4c098ca9fd2 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1410,6 +1410,19 @@ reboot: syscon-reboot { offset =3D <0x3a00>; /* SYSTEM_CONFIGURATION */ value =3D <0x2>; /* reset value */ }; + + reboot-mode { + compatible =3D "syscon-reboot-mode"; + offset =3D <0x0810>; /* EXYNOS_PMU_SYSIP_DAT0 */ + mode-bootloader =3D <0xfc>; + mode-charge =3D <0x0a>; + mode-fastboot =3D <0xfa>; + mode-reboot-ab-update =3D <0x52>; + mode-recovery =3D <0xff>; + mode-rescue =3D <0xf9>; + mode-shutdown-thermal =3D <0x51>; + mode-shutdown-thermal-battery =3D <0x51>; + }; }; =20 pinctrl_gpio_alive: pinctrl@174d0000 { --=20 2.48.1.362.g079036d154-goog