From: Drew Fustini <drew@pdp7.com>
Date: Thu, 22 Nov 2018 07:01:23 +0000 (+0000)
Subject: add SPI1 pins for BeagleBone Black
X-Git-Tag: 0.3.0^2
X-Git-Url: https://git.ayoreis.com/Adafruit_Blinka-hackapet.git/commitdiff_plain/9eeec4d1482efafd033d0c274cf2a027276ea2bd?ds=sidebyside;hp=9eeec4d1482efafd033d0c274cf2a027276ea2bd

add SPI1 pins for BeagleBone Black

Refer to:
http://beagleboard.org/static/images/cape-headers-spi.png

CE1 P9.28 SPI1_CS0
MISO_1 P9.29 SPI1_D0
MOSI_1 P9.30 SPI1_D1
SCLK_1 P9.31 SPI_SCLK

SPI1 conflicts with HDMI Audio (McASP)

Refer to:
https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

To Disable HDMI AUDIO, uncomment this line in /boot/uEnv.txt:
disable_uboot_overlay_audio=1

Set pin modes for SPI1 with:

config-pin p9.28 spi_cs
config-pin p9.29 spi
config-pin p9.30 spi
config-pin p9.31 spi_sclk
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