arm64: dts: renesas: rzt2h-n2h-evk: Enable xSPI nodes

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Enable the xSPI0 and xSPI1 controllers on the RZ/T2H N2H EVK board.

Configure the xSPI0 controller interface to 1-bit (x1) mode, even though
the connected MX25LW51245 octal flash device supports octal mode.  Add a
corresponding inline hardware comment detailing this restriction;
operating in octal mode causes the BootROM to fail loading the
first-stage bootloader following a Watchdog Timer (WDT) reset.

Configure the xSPI1 controller interface connected to the AT25SF128A
flash device for 4-bit (x4) mode to utilize all available data lines.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260527202430.606341-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

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Lad Prabhakar 2026-05-27 21:24:30 +01:00 • committed by Geert Uytterhoeven

parent 8fa0a1ae4f

commit f4418ce757

2 changed files with 142 additions and 0 deletions

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arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts

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127

arch/arm64/boot/dts/renesas/rzt2h-n2h-evk-common.dtsi

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