[PATCH 2/2] riscv: dts: unmatched: Add gpio card detect to mmc-spi-slot

From: Bin Meng
Date: Wed Jun 16 2021 - 03:46:50 EST


From: Bin Meng <bin.meng@xxxxxxxxxxxxx>

Per HiFive Unmatched schematics, the card detect signal of the
micro SD card is connected to gpio pin #15, which should be
reflected in the DT via the <gpios> property, as described in
Documentation/devicetree/bindings/mmc/mmc-spi-slot.txt.

[1] https://sifive.cdn.prismic.io/sifive/6a06d6c0-6e66-49b5-8e9e-e68ce76f4192_hifive-unmatched-schematics-v3.pdf

Signed-off-by: Bin Meng <bin.meng@xxxxxxxxxxxxx>
---

arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
index b1c3c596578f..214794363c6a 100644
--- a/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
+++ b/arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
@@ -2,6 +2,7 @@
/* Copyright (c) 2020 SiFive, Inc */

#include "fu740-c000.dtsi"
+#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>

/* Clock frequency (in Hz) of the PCB crystal for rtcclk */
@@ -228,6 +229,7 @@ mmc@0 {
spi-max-frequency = <20000000>;
voltage-ranges = <3300 3300>;
disable-wp;
+ gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
};
};

--
2.25.1