Commit 65d2ae69 authored by Daniel DeGrasse's avatar Daniel DeGrasse Committed by Anas Nashif
Browse files

doc: releases: migration-guide-3.7: add note for SSD16XXX displays 



Add note for SSD16XXX displays, which have been migrated to the MIPI DBI
API. This note describes how to define the MIPI DBI wrapper device
needed for the SSD16XXX display

Signed-off-by: default avatarDaniel DeGrasse <daniel.degrasse@nxp.com>
parent 323adb9f

doc/releases/migration-guide-3.7.rst

+43 −2
Original line number Diff line number Diff line
@@ -355,8 +355,8 @@ Display 
* ST7789V based displays now use the MIPI DBI driver class. These displays

  must now be declared within a MIPI DBI driver wrapper device, which will

  manage interfacing with the display. (:github:`73750`) Note that the

  `cmd-data-gpios` pin has changed polarity with this update, to align better

  with the new `dc-gpios` name. For an example, see below:

  ``cmd-data-gpios`` pin has changed polarity with this update, to align better

  with the new ``dc-gpios`` name. For an example, see below:



  .. code-block:: devicetree
@@ -395,6 +395,47 @@ Display 
        };

    };



* SSD16XX based displays now use the MIPI DBI driver class (:github:`73946`).

  These displays must now be declared within a MIPI DBI driver wrapper device,

  which will manage interfacing with the display. Note that the ``dc-gpios``

  pin has changed polarity with this update. For an example, see below:



  .. code-block:: devicetree



    /* Legacy SSD16XX display definition */

    &spi0 {

        ssd1680: ssd1680@0 {

            compatible = "solomon,ssd1680";

            reg = <0>;

            spi-max-frequency = <4000000>;

            reset-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;

            dc-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;

            ...

        };

    };



    /* New display definition with MIPI DBI device */



    #include <zephyr/dt-bindings/mipi_dbi/mipi_dbi.h>



    ...



    mipi_dbi {

        compatible = "zephyr,mipi-dbi-spi";

        reset-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;

        dc-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;

        spi-dev = <&spi0>;

        #address-cells = <1>;

        #size-cells = <0>;



        ssd1680: ssd1680@0 {

            compatible = "solomon,ssd1680";

            reg = <0>;

            mipi-max-frequency = <4000000>;

            ...

        };

    };



Enhanced Serial Peripheral Interface (eSPI)

===========================================

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