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arm64: dts: renesas: r9a09g087m44-rzn2h-evk: Clarify SD0 power jumper setup

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Document the required JP23 jumper positions for supplying SD0 when
selecting between the onboard eMMC and the SD card slot.

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/20260123225957.1007089-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Lad Prabhakar
2026-01-23 22:59:56 +00:00
committed by Geert Uytterhoeven
parent a7b37f329e
commit f01be0fa24
1 changed files with 4 additions and 2 deletions
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6
arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts
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@@ -14,12 +14,14 @@
/*
* SD0 can be connected to either eMMC (U33) or SD card slot CN21
* Lets by default enable the eMMC, note we need the below SW settings
* for eMMC.
* for eMMC. Also ensure that JP23 pins 5 and 6 are connected with a jumper
* to provide the SD0 power supply when using eMMC.
* DSW5[1] = ON; DSW5[2] = ON
* DSW17[5] = OFF; DSW17[6] = ON
*
* To enable SD card and disable eMMC on SDHI0 disable the below macro
* and set the below switch setting:
* and set the below switch settings. Also ensure that JP23 pins 3 and 4 are
* connected with a jumper to provide the SD0 power supply when using an SD card.
* DSW5[1] = OFF; DSW5[2] = ON
* P22_6 = SD0_WP; DSW15[1] = OFF; DSW15[2] = ON
* P22_5 = SD0_CD; DSW15[3] = OFF; DSW15[4] = ON