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[90.63.244.31]) by smtp.googlemail.com with ESMTPSA id b12sm65309630wrt.17.2019.01.17.08.54.39 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 17 Jan 2019 08:54:39 -0800 (PST) From: Loys Ollivier To: devicetree@vger.kernel.org, Johan Hovold Cc: Loys Ollivier , Rob Herring , Mark Rutland , linux-kernel@vger.kernel.org, Kevin Hilman , linux-amlogic@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Martin Blumenstingl Subject: [PATCH v2 0/4] Add driver for Mediatek-based GNSS receivers Date: Thu, 17 Jan 2019 17:54:30 +0100 Message-Id: <1547744074-28308-1-git-send-email-lollivier@baylibre.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, This patch series adds a new GNSS driver for the Mediatek-based GNSS receivers. These receivers transmits NMEA output sequence after boot. Power management can be done via the main supply and optional backup supply as defined in the device tree. The driver has been tested using a GlobalTop pa6h chipset on a Libretech-cc board using the expansion header. Changes made in the board device tree can be found below for reference and testing. Loys Sorry it took so long for the v2. Rebased that serie on 5.0-rc1 and had to send some fixes for the board before testing. Version 2 changes: - driver: Renamed driver from Globaltop/gtop to Mediatek/mtk - driver: Added "mediatek,mt3339" compatible - dt: Renamed bindings from Globaltop to Mediatek - dt: Moved the current-speed property as optional - dt: removed the status line in example - cover-letter: removed the alias that is not needed anymore Loys Ollivier (4): dt-bindings: Add vendor prefix for "GlobalTop Technology, Inc." dt-bindings: gnss: add mediatek binding gnss: add mtk receiver type support gnss: add driver for mediatek receivers .../devicetree/bindings/gnss/mediatek.txt | 39 ++++++ .../devicetree/bindings/vendor-prefixes.txt | 1 + drivers/gnss/Kconfig | 13 ++ drivers/gnss/Makefile | 3 + drivers/gnss/core.c | 1 + drivers/gnss/mtk.c | 153 +++++++++++++++++++++ include/linux/gnss.h | 1 + 7 files changed, 211 insertions(+) create mode 100644 Documentation/devicetree/bindings/gnss/mediatek.txt create mode 100644 drivers/gnss/mtk.c --- diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts index 90a56af967a7..3b3d4dcc47aa 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts @@ -17,6 +17,7 @@ aliases { serial0 = &uart_AO; ethernet0 = ðmac; }; @@ -269,7 +270,20 @@ pinctrl-names = "default"; }; +/* This is brought out on the UART_A_TX (8) and UART_A_RX (10) pins: */ +&uart_A { + status = "okay"; + pinctrl-0 = <&uart_a_pins>; + pinctrl-names = "default"; + + gnss { + compatible = "globaltop,pa6h"; + v-bckp-supply = <&vcc_3v3>; + vcc-supply = <&vcc_3v3>; + current-speed = <9600>; + }; +}; + &usb0 { status = "okay"; }; -- 2.7.4