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[71.218.50.136]) by smtp.gmail.com with ESMTPSA id gw3-20020a0566381ee300b0046b692e719esm3207609jab.150.2023.12.26.11.22.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 26 Dec 2023 11:22:08 -0800 (PST) From: Mark Hasemeyer To: LKML Cc: AngeloGioacchino Del Regno , Krzysztof Kozlowski , Rob Herring , Konrad Dybcio , Sudeep Holla , Andy Shevchenko , Raul Rangel , Tzung-Bi Shih , Mark Hasemeyer , Alim Akhtar , Conor Dooley , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v3 07/24] ARM: dts: samsung: exynos5420: Enable cros-ec-spi as wake source Date: Tue, 26 Dec 2023 12:21:11 -0700 Message-ID: <20231226122113.v3.7.I06b059021de1bf6103e60a73211f078f2af75d17@changeid> X-Mailer: git-send-email 2.43.0.472.g3155946c3a-goog In-Reply-To: <20231226192149.1830592-1-markhas@chromium.org> References: <20231226192149.1830592-1-markhas@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1786373645735426190 X-GMAIL-MSGID: 1786373645735426190 The cros_ec driver currently assumes that cros-ec-spi compatible device nodes are a wakeup-source even though the wakeup-source property is not defined. Some Chromebooks use a separate wake pin, while others overload the interrupt for wake and IO. With the current assumption, spurious wakes can occur on systems that use a separate wake pin. It is planned to update the driver to no longer assume that the EC interrupt pin should be enabled for wake. Add the wakeup-source property to all cros-ec-spi compatible device nodes to signify to the driver that they should still be a valid wakeup source. -Commit-changes: 3 -Update commit message to provide details of the motivation behind the change Signed-off-by: Mark Hasemeyer --- (no changes since v2) Changes in v2: -Split by arch/soc arch/arm/boot/dts/samsung/exynos5420-peach-pit.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/samsung/exynos5420-peach-pit.dts b/arch/arm/boot/dts/samsung/exynos5420-peach-pit.dts index 4e757b6e28e1c..3759742d38cac 100644 --- a/arch/arm/boot/dts/samsung/exynos5420-peach-pit.dts +++ b/arch/arm/boot/dts/samsung/exynos5420-peach-pit.dts @@ -967,6 +967,7 @@ cros_ec: cros-ec@0 { reg = <0>; spi-max-frequency = <3125000>; google,has-vbc-nvram; + wakeup-source; controller-data { samsung,spi-feedback-delay = <1>;