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Mon, 10 Jun 2019 16:51:49 -0700 (PDT) Received: from localhost ([2620:15c:202:1:75a:3f6e:21d:9374]) by smtp.gmail.com with ESMTPSA id y5sm11427325pgv.12.2019.06.10.16.51.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 10 Jun 2019 16:51:48 -0700 (PDT) From: Matthias Kaehlcke To: Heiko Stuebner , Rob Herring , Mark Rutland Subject: [PATCH v2] ARM: dts: rockchip: Configure BT_HOST_WAKE as wake-up signal on veyron Date: Mon, 10 Jun 2019 16:51:44 -0700 Message-Id: <20190610235144.34261-1-mka@chromium.org> X-Mailer: git-send-email 2.22.0.rc2.383.gf4fbbf30c2-goog MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190610_165150_502794_971F1997 X-CRM114-Status: GOOD ( 14.96 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Brian Norris , Douglas Anderson , linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Matthias Kaehlcke , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Doug Anderson This enables wake up on Bluetooth activity when the device is suspended. The BT_HOST_WAKE signal is only connected on devices with BT module that are connected through UART. Signed-off-by: Douglas Anderson Signed-off-by: Matthias Kaehlcke --- Changes in v2: - attributed authorship to Doug - use constant instead of literal for pin number --- arch/arm/boot/dts/rk3288-veyron.dtsi | 29 ++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm/boot/dts/rk3288-veyron.dtsi b/arch/arm/boot/dts/rk3288-veyron.dtsi index 3257ca90f0e8..e2635ad574e7 100644 --- a/arch/arm/boot/dts/rk3288-veyron.dtsi +++ b/arch/arm/boot/dts/rk3288-veyron.dtsi @@ -23,6 +23,31 @@ reg = <0x0 0x0 0x0 0x80000000>; }; + bt_activity: bt-activity { + compatible = "gpio-keys"; + pinctrl-names = "default"; + pinctrl-0 = <&bt_host_wake>; + + /* + * HACK: until we have an LPM driver, we'll use an + * ugly GPIO key to allow Bluetooth to wake from S3. + * This is expected to only be used by BT modules that + * use UART for comms. For BT modules that talk over + * SDIO we should use a wakeup mechanism related to SDIO. + * + * Use KEY_RESERVED here since that will work as a wakeup but + * doesn't get reported to higher levels (so doesn't confuse + * Chrome). + */ + bt-wake { + label = "BT Wakeup"; + gpios = <&gpio4 RK_PD7 GPIO_ACTIVE_HIGH>; + linux,code = ; + wakeup-source; + }; + + }; + power_button: power-button { compatible = "gpio-keys"; pinctrl-names = "default"; @@ -549,6 +574,10 @@ rockchip,pins = <4 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>; }; + bt_host_wake: bt-host-wake { + rockchip,pins = <4 RK_PD7 RK_FUNC_GPIO &pcfg_pull_down>; + }; + /* * We run sdio0 at max speed; bump up drive strength. * We also have external pulls, so disable the internal ones.