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Message-ID: <2f63be06-f9b2-2103-888c-e3f49c40fe82@lechnology.com> Date: Thu, 21 Dec 2017 13:35:14 -0600 From: David Lechner <david@...hnology.com> To: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org Cc: Noralf Trønnes <noralf@...nnes.org>, limor@...yada.net, Linus Walleij <linus.walleij@...aro.org>, Rob Herring <robh+dt@...nel.org>, Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 3/3] drm/tinydrm: add driver for ST7735R panels On 12/21/2017 01:23 PM, David Lechner wrote: > This adds a new driver for Sitronix ST7735R display panels. > > This has been tested using an Adafruit 1.8" TFT. > > Signed-off-by: David Lechner <david@...hnology.com> > --- <snip> > + mipi_dbi_command(mipi, ST7735R_GAMCTRP1, 0x0f, 0x1a, 0x0f, 0x18, 0x2f, > + 0x28, 0x20, 0x22, 0x1f, 0x1b, 0x23, 0x37, 0x00, 0x07, > + 0x02, 0x10); > + mipi_dbi_command(mipi, ST7735R_GAMCTRN1, 0x0f, 0x1b, 0x0f, 0x17, 0x33, > + 0x2c, 0x29, 0x2e, 0x30, 0x30, 0x39, 0x3f, 0x00, 0x07, > + 0x03, 0x10); By the way, how do you know what is the "right" gamma curve? I think I copied this from the generic st7735r driver in fbtft, but I noticed that there is also a different curve for the Adafruit 1.8" display in fbtft. I'm wondering if I should have used that one instead. I can't really tell a difference looking at the display.
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