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[80.251.221.29]) by smtp.gmail.com with ESMTPSA id 11sm6766722pgz.22.2021.01.14.21.18.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Jan 2021 21:18:16 -0800 (PST) From: Artem Lapkin X-Google-Original-From: Artem Lapkin To: narmstrong@baylibre.com Cc: u-boot@lists.denx.de, u-boot-amlogic@groups.io, m.szyprowski@samsung.com, jh80.chung@samsung.com, hs@denx.de, art@khadas.com, nick@khadas.com, gouwa@khadas.com Subject: [PATCH 1/2] gpio: gpio-uclass: add OPEN_DRAIN flag parsing Date: Fri, 15 Jan 2021 13:15:57 +0800 Message-Id: <20210115051558.469734-2-art@khadas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210115051558.469734-1-art@khadas.com> References: <20210115051558.469734-1-art@khadas.com> MIME-Version: 1.0 X-Mailman-Approved-At: Fri, 15 Jan 2021 13:25:10 +0100 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.102.3 at phobos.denx.de X-Virus-Status: Clean add GPIOD_OPEN_DRAIN flag which cant parsed properly Problem: for example cant power video system for sm1 g12a socs because OPEN_DRAIN flag cant parsed DTS examples: ``` $ grep GPIO_OPEN_DRAIN\> arch/arm/dts/meson-*.dt* arch/arm/dts/meson-g12a-sei510.dts: gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; arch/arm/dts/meson-g12a-u200.dts: gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; arch/arm/dts/meson-gx-libretech-pc.dtsi: gpio = <&gpio GPIOH_3 GPIO_OPEN_DRAIN>; arch/arm/dts/meson-khadas-vim3.dtsi: gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; arch/arm/dts/meson-sm1-sei610.dts: gpio = <&gpio GPIOH_8 GPIO_OPEN_DRAIN>; ``` Signed-off-by: Artem Lapkin --- drivers/gpio/gpio-uclass.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpio/gpio-uclass.c b/drivers/gpio/gpio-uclass.c index bad6b71e0c..6225f32457 100644 --- a/drivers/gpio/gpio-uclass.c +++ b/drivers/gpio/gpio-uclass.c @@ -574,6 +574,15 @@ int dm_gpio_set_value(const struct gpio_desc *desc, int value) if (ret) return ret; + if (desc->flags & GPIOD_OPEN_DRAIN) { + if (value) + gpio_get_ops(desc->dev)->direction_input(desc->dev, desc->offset); + else + gpio_get_ops(desc->dev)->direction_output(desc->dev, desc->offset, 0); + + return 0; + } + if (desc->flags & GPIOD_ACTIVE_LOW) value = !value;