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riscv: dts: unmatched: Add gpio card detect to mmc-spi-slot 

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@windriver.com>
Fixes: d573b5558a ("riscv: dts: add initial board data for the SiFive HiFive Unmatched")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Bin Meng 2021-06-16 15:46:45 +08:00 committed by Palmer Dabbelt
parent 6331b8765c
commit 298d03c2d7
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1 changed files with 2 additions and 0 deletions
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2
arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
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@ -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 */
@ -223,6 +224,7 @@
spi-max-frequency = <20000000>;
voltage-ranges = <3300 3300>;
disable-wp;
gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
};
};