Re: [PATCH v2 4/5] fbdev/ssd1307fb: add support to enable VBAT
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From: Rob Herring <robh@kernel.org>
Date: 2017-01-18 22:33:10
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linux-devicetree
On Fri, Jan 13, 2017 at 12:35:48PM +0200, Jyri Sarha wrote:
quoted hunk
From: Tomi Valkeinen <redacted> SSD1306 needs VBAT when it is wired in charge pump configuration. This patch adds support to the driver to enable VBAT regulator at init time. Signed-off-by: Tomi Valkeinen <redacted> Reviewed-by: Roger Quadros <redacted> Signed-off-by: Jyri Sarha <redacted> --- .../devicetree/bindings/display/ssd1307fb.txt | 1 + drivers/video/fbdev/ssd1307fb.c | 20 +++++++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-)diff --git a/Documentation/devicetree/bindings/display/ssd1307fb.txt b/Documentation/devicetree/bindings/display/ssd1307fb.txt index 6617df6..209d931 100644 --- a/Documentation/devicetree/bindings/display/ssd1307fb.txt +++ b/Documentation/devicetree/bindings/display/ssd1307fb.txt@@ -16,6 +16,7 @@ Required properties: Optional properties: - reset-gpios: The GPIO used to reset the OLED display, if available. See Documentation/devicetree/bindings/gpio/gpio.txt for details. + - vbat-supply: The supply for VBAT
According to the datasheet, SSD1307 has 2 supplies: Vdd and Vcc I don't see any mention of a charge pump, so that must be an external component.
- solomon,segment-no-remap: Display needs normal (non-inverted) data column
to segment mapping
- solomon,com-seq: Display uses sequential COM pin configuration