From fdde1a8148d81617582c138cd1fbdc4594d4c941 Mon Sep 17 00:00:00 2001 From: Jyri Sarha Date: Wed, 8 Feb 2017 16:43:59 +0100 Subject: fbdev: ssd1307fb: Make reset gpio devicetree property optional MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Make reset gpio devicetree property optional. Depending on the board designing there may not be a dedicated gpio for resetting the display. Without a proper reset there may be some junk in the display memory at probe time, so in such a case the display memory is cleared before turning it on. The devicetree binding document is also updated. Cc: Rob Herring Cc: Tomi Valkeinen Cc: Maxime Ripard Cc: Benoît Cousson Signed-off-by: Jyri Sarha Signed-off-by: Bartlomiej Zolnierkiewicz --- Documentation/devicetree/bindings/display/ssd1307fb.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation/devicetree/bindings/display') diff --git a/Documentation/devicetree/bindings/display/ssd1307fb.txt b/Documentation/devicetree/bindings/display/ssd1307fb.txt index 4aee67fdf2cf..6617df68d8b8 100644 --- a/Documentation/devicetree/bindings/display/ssd1307fb.txt +++ b/Documentation/devicetree/bindings/display/ssd1307fb.txt @@ -8,14 +8,14 @@ Required properties: 0x3c or 0x3d - pwm: Should contain the pwm to use according to the OF device tree PWM specification [0]. Only required for the ssd1307. - - reset-gpios: Should contain the GPIO used to reset the OLED display. See - Documentation/devicetree/bindings/gpio/gpio.txt for details. - solomon,height: Height in pixel of the screen driven by the controller - solomon,width: Width in pixel of the screen driven by the controller - solomon,page-offset: Offset of pages (band of 8 pixels) that the screen is mapped to. Optional properties: + - reset-gpios: The GPIO used to reset the OLED display, if available. See + Documentation/devicetree/bindings/gpio/gpio.txt for details. - solomon,segment-no-remap: Display needs normal (non-inverted) data column to segment mapping - solomon,com-seq: Display uses sequential COM pin configuration -- cgit v1.2.3