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AJvYcCUWoPLx0ent18sFFLloejsvPAKEWaBwR1ZzU3dZ5pPJ5VrDCpVFf0Gp/qxc52R+i+YfuVdrMoN4+cLN4jTzRJCzJAN6qIvssTTwvdzpsZaum90= X-Gm-Message-State: AOJu0Yxxhj/g4FKK55fqyoLLp7so32gt+rNyTmi/pbtzPaCVUtZNSSNu lC5+qtlpu++Nr1h1Tf810dIBvqgPYiPXnvLuFG5CYkAbecXdGEjvuVegfqyETbg= X-Google-Smtp-Source: AGHT+IHE/9FMLNxeq1ujy3GK1f/VeuXsMI30Klw5I97NuBAg2W8K6Jh0ubTi20bQaUpHSFcBiirkNw== X-Received: by 2002:a05:600c:43d4:b0:424:a4a2:9478 with SMTP id 5b1f17b1804b1-424a4a294cemr41167465e9.25.1719430989622; Wed, 26 Jun 2024 12:43:09 -0700 (PDT) Received: from gpeter-l.lan ([2a0d:3344:2e8:8510:24d9:a20a:2de5:8eda]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-424c837eb2bsm36728905e9.39.2024.06.26.12.43.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Jun 2024 12:43:08 -0700 (PDT) From: Peter Griffin To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, alim.akhtar@samsung.com, s.nawrocki@samsung.com, cw00.choi@samsung.com, mturquette@baylibre.com, sboyd@kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, tudor.ambarus@linaro.org, andre.draszik@linaro.org, kernel-team@android.com, willmcvicker@google.com, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Peter Griffin Subject: [PATCH 1/3] arm64: dts: exynos: gs101: add syscon-poweroff and syscon-reboot nodes Date: Wed, 26 Jun 2024 20:42:58 +0100 Message-ID: <20240626194300.302327-2-peter.griffin@linaro.org> X-Mailer: git-send-email 2.45.2.741.gdbec12cfda-goog In-Reply-To: <20240626194300.302327-1-peter.griffin@linaro.org> References: <20240626194300.302327-1-peter.griffin@linaro.org> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reboot of gs101 SoC can be handled by setting the bit(SWRESET_SYSTEM[1]) of SYSTEM_CONFIGURATION register(PMU + 0x3a00). Poweroff of gs101 SoC can be handled by setting bit(DATA[8]) of PAD_CTRL_PWR_HOLD register (PMU + 0x3e9c). Tested using "reboot" and "poweroff -p" commands. Signed-off-by: Peter Griffin Tested-by: Will McVicker --- This feature has a runtime dependency on the following series https://lore.kernel.org/linux-arm-kernel/20240621115544.1655458-1-peter.griffin@linaro.org/ and also the exynos-pmu and clk-gs101 patches in this series to be functional. --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi index a66e996666b8..ce24b80985a2 100644 --- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1394,6 +1394,21 @@ sysreg_apm: syscon@174204e0 { pmu_system_controller: system-controller@17460000 { compatible = "google,gs101-pmu", "syscon"; reg = <0x17460000 0x10000>; + + poweroff: syscon-poweroff { + compatible = "syscon-poweroff"; + regmap = <&pmu_system_controller>; + offset = <0x3e9c>; /* PAD_CTRL_PWR_HOLD */ + mask = <0x100>; /* reset value */ + }; + + reboot: syscon-reboot { + compatible = "syscon-reboot"; + regmap = <&pmu_system_controller>; + offset = <0x3a00>; /* SYSTEM_CONFIGURATION */ + mask = <0x2>; /* SWRESET_SYSTEM */ + value = <0x2>; /* reset value */ + }; }; pinctrl_gpio_alive: pinctrl@174d0000 {