shields: Add EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter

# Copyright (c) 2025 Renesas Electronics Corporation

# SPDX-License-Identifier: Apache-2.0

config SHIELD_EK_RA8D1_RTK7EKA6M3B00001BU

	def_bool $(shields_list_contains,ek_ra8d1_rtk7eka6m3b00001bu)

.. _ek_ra8d1_rtk7eka6m3b00001bu:

EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter

##############################################

Overview

********

The EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter is an open-source hardware converter PCB that

adapts the EK-RA8D1 Parallel Graphics Expansion Port (J57) to the RTK7EKA6M3B00001BU display

shield.

.. figure:: img/top.webp

   :align: center

   :alt: EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter (top)

   :width: 300

   EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter (top)

.. figure:: img/bottom.webp

   :align: center

   :alt: EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter (bottom)

   :width: 300

   EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter (bottom)

Programming

***********

Set ``--shield ek_ra8d1_rtk7eka6m3b00001bu`` when you invoke ``west build``.

This shield is just a converter, so it is usually used with RTK7EKA6M3B00001BU shield.

For example,

.. zephyr-app-commands::

   :zephyr-app: tests/drivers/display/display_read_write

   :board: ek_ra8d1

   :shield: ek_ra8d1_rtk7eka6m3b00001bu,rtk7eka6m3b00001bu

   :goals: build

References

**********

- `EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter`_

.. _EK-RA8D1 to RTK7EKA6M3B00001BU Display Adapter:

   https://oshpark.com/shared_projects/pzfp0mCD

/*

 * Copyright (c) 2025 Renesas Electronics Corporation

 *

 * SPDX-License-Identifier: Apache-2.0

 */

/ {

	lcd_expansion_rtk7eka6m3b00001bu: parallel-graphics-connector {

		compatible = "renesas,ra-parallel-graphics-header";

		#gpio-cells = <2>;

		gpio-map-mask = <0xffffffff 0xffffffc0>;

		gpio-map-pass-thru = <0 0x3f>;

		gpio-map = <5 0 &ek_ra8d1_parallel_graphics_expansion 4 0>,	/* IIC_SCL */

			   <21 0 &ek_ra8d1_parallel_graphics_expansion 2 0>,	/* IIC_SDA */

			   <35 0 &ek_ra8d1_parallel_graphics_expansion 6 0>,	/* DISP_RST */

			   <38 0 &ek_ra8d1_parallel_graphics_expansion 3 0>,	/* DISP_INT */

			   <39 0 &ek_ra8d1_parallel_graphics_expansion 1 0>;	/* DISP_BLEN */

	};

};