From: Cosmin Tanislav Date: Wed, 22 Oct 2025 07:31:40 +0000 (+0300) Subject: arm64: dts: renesas: rzt2h-n2h-evk: Add note about SD1 1.8V modes X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=00d3dbc4744dc3213c150fb33c47697a7c60fb2f;p=thirdparty%2Fkernel%2Flinux.git arm64: dts: renesas: rzt2h-n2h-evk: Add note about SD1 1.8V modes 1.8V operation of SD1 requires the jumper to be placed on the correct pins of a connector on these Evaluation Kits. 1.8V is needed to achieve the higher rated speeds like SDR104. Add a note about it to make sure no one else spends too much time figuring this out. Signed-off-by: Cosmin Tanislav Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20251022073141.1989762-1-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Geert Uytterhoeven --- diff --git a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts index b7706d0bc3aa1..d1474f1bd5236 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts +++ b/arch/arm64/boot/dts/renesas/r9a09g077m44-rzt2h-evk.dts @@ -26,6 +26,9 @@ * P17_4 = SD1_CD; SW2[3] = ON * P08_5 = SD1_PWEN; SW2[3] = ON * P08_6 = SD1_IOVS; SW2[3] = ON; SW5[3] = OFF; SW5[4] = ON + * To enable proper operation in 1.8V modes, CN77 must have pins 2 and 3 + * connected by the jumper. This connects SD1 power-supply control IC output + * back to VCC1833_7. */ #define SD1_MICRO_SD 1 diff --git a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts index 17c0c79fbd96b..eaf73868783b8 100644 --- a/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts +++ b/arch/arm64/boot/dts/renesas/r9a09g087m44-rzn2h-evk.dts @@ -30,6 +30,9 @@ /* * P17_4 = SD1_CD; DSW5[3] = ON; DSW19[1] = OFF; DSW19[2] = ON * P08_6 = SD1_IOVS; DSW5[3] = ON + * To enable proper operation in 1.8V modes, JP21 must have pins 2 and 3 + * connected by the jumper. This connects SD1 power-supply control IC output + * back to VCC1833_7. */ #define SD1_MICRO_SD 1