target/linux/bcm27xx/patches-5.10/950-0478-dt-Add-option-for-dpi-without-DE-and-PCLK-for-VGA666.patch

   1 From dad204699d870a86849a635ebec84f3259923a0e Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 4 Feb 2021 14:23:58 +0000
   4 Subject: [PATCH] dt: Add option for dpi without DE and PCLK (for
   5  VGA666)
   6
   7 VGA666 doesn't use the DE or PCLK signals, therefore there is
   8 no point in claiming their use. It's also then possible to
   9 use GPIOs 0&1 for DDC to read the EDID from the display.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  12 ---
  13  arch/arm/boot/dts/bcm270x.dtsi | 6 ++++++
  14  1 file changed, 6 insertions(+)
  15
  16 --- a/arch/arm/boot/dts/bcm270x.dtsi
  17 +++ b/arch/arm/boot/dts/bcm270x.dtsi
  18 @@ -170,6 +170,12 @@
  19                              20 21>;
  20                 brcm,function = <BCM2835_FSEL_ALT2>;
  21         };
  22 +       dpi_18bit_gpio2: dpi_18bit_gpio2 {
  23 +               brcm,pins = <2 3 4 5 6 7 8 9 10 11
  24 +                            12 13 14 15 16 17 18 19
  25 +                            20 21>;
  26 +               brcm,function = <BCM2835_FSEL_ALT2>;
  27 +       };
  28  };
  29
  30  &uart0 {