Differences

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--- en:bpi-r4:start [2024/02/14 19:01] – [linux] frank
+++ en:bpi-r4:start [2024/04/28 11:48] – [rtc] frank
@@ Line 31: / Line 31: @@
 {{:en:bpi-r4:bpi-r4_v1.1_top.jpg?direct&400 |}} {{ :en:bpi-r4:bpi-r4_v1.1_bottom.jpg?direct&400|}}
+===== thermal =====
+  cat /sys/class/thermal/thermal_zone0/temp
+Uses lvts driver
+Thermalpad size: https://forum.banana-pi.org/t/banana-pi-bpi-r4-heatsink-and-case-design/16638/53
+==== testing fan ====
+by default first trip point is set to 40°C and second is 85°C...for testing the fan it is a bit high when using a passive heatsink. so just set first to 35 and second to 45.
+<code>
+root@bpi-r4-v11:/sys/class/thermal/thermal_zone0
+# cat trip_point_4_temp
+root@bpi-r4-v11:/sys/class/thermal/thermal_zone0
+# cat trip_point_3_temp
+root@bpi-r4-v11:/sys/class/thermal/thermal_zone0
+# echo 45000 > trip_point_3_temp
+root@bpi-r4-v11:/sys/class/thermal/thermal_zone0
+# echo 35000 > trip_point_4_temp
+root@bpi-r4-v11:/sys/class/thermal/thermal_zone0
+</code>
 ===== Network =====
@@ Line 103: / Line 130: @@
 {{ :en:bpi-r4:bpi-r4-gpio.png?direct&400 |}}
+===== eeprom =====
+BPI-R4 has an eeprom on i2c-mux channel 0
+  [ 1.515672] at24 2-0057: 256 byte 24c02 EEPROM, writable, 1 bytes/write
+write-mode (wp-gpio is linked to green led):
+<code>
+# echo 0 > /sys/devices/platform/gpio-leds/leds/green:status/brightness
+root@bpi-r4-v11:~
+# echo "test" > /sys/bus/i2c/devices/2-0057/eeprom
+root@bpi-r4-v11:~
+# hexdump -C /sys/bus/i2c/devices/2-0057/eeprom
+00000000  74 65 73 74 0a ff ff ff  ff ff ff ff ff ff ff ff  |test............|
+00000010  ff ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff  |................|
+*
+00000100
+root@bpi-r4-v11:~
+# echo 1 > /sys/devices/platform/gpio-leds/leds/green:status/brightness
+root@bpi-r4-v11:~
+</code>
+===== rtc =====
+Battery connection looks like charging circuit for ml2032. You should not connect non-rechargeable battery like cr2032.
+https://forum.banana-pi.org/t/bpi-r3-bpi-r4-does-the-bpi-r3-r4-have-a-rtc/17763/36
+Connector is JST with 1.25mm pitch
+RTC time will survive software reboot
+<code>
+# dmesg | grep rtc
+[    1.479923] rtc-pcf8563 2-0051: low voltage detected, date/time is not reliable.
+[    1.487390] rtc-pcf8563 2-0051: registered as rtc0
+[    1.493378] rtc-pcf8563 2-0051: low voltage detected, date/time is not reliable.
+[    1.500771] rtc-pcf8563 2-0051: hctosys: unable to read the hardware clock
+root@bpi-r4-v11:~
+# date -s "2024-04-27 09:55 CEST"
+Sat Apr 27 07:55:00 UTC 2024
+root@bpi-r4-v11:~
+# hwclock -w
+root@bpi-r4-v11:~
+# hwclock -r
+-04-27 07:56:23.979830+00:00
+root@bpi-r4-v11:~
+# reboot
+...
+root@bpi-r4-v11:~
+# dmesg | grep rtc
+[    1.480067] rtc-pcf8563 2-0051: registered as rtc0
+[    1.486061] rtc-pcf8563 2-0051: setting system clock to 2024-04-27T07:56:53 )
+root@bpi-r4-v11:~
+# date
+Sat Apr 27 08:00:46 UTC 2024
+root@bpi-r4-v11:~
+</code>
 ===== uboot/ATF =====
@@ Line 108: / Line 192: @@
 currently use these:
-  * uboot: https://github.com/frank-w/u-boot/tree/2023-10-bpi
+  * uboot: https://github.com/frank-w/u-boot/tree/2024-04-bpi
   * ATF: https://github.com/frank-w/u-boot/tree/mtk-atf
@@ Line 215: / Line 299: @@
 ==== openwrt ====
+=== upstream ===
+same as for r3
+https://forum.banana-pi.org/t/banana-pi-r3-bsp-source-code/14257/2
+but select BananaPi BPI-R4 of course :)
+i had to do a "make distclean" after "git pull" followed by the documented steps
+<code>
+# Update the feeds
+./scripts/feeds update -a
+./scripts/feeds install -a
+make menuconfig
+#select "Target System (MediaTek Ralink ARM)" => "Subtarget (Filogic 8x0 (MT798x))" => "Target Profile (Bananapi BPi-R4)"
+make -j$(nproc)
+</code>
+then write the sdcard image...
+  gunzip -c bin/targets/mediatek/filogic/openwrt-mediatek-filogic-bananapi_bpi-r4-sdcard.img.gz | sudo dd bs=1M status=progress conv=notrunc,fsync of=/dev/sdX
+=== downstream (sdk) ===
   * clone openwrt master
@@ Line 242: / Line 352: @@
   tar -xf bin/targets/mediatek/filogic/openwrt-mediatek-filogic-mediatek_mt7988a-rfb-nand-squashfs-sysupgrade.bin sysupgrade-mediatek_mt7988a-rfb-nand/kernel
   dumpimage -l sysupgrade-mediatek_mt7988a-rfb-nand/kernel
+  tftpboot 0x50000000 openwrt-mediatek-filogic-bananapi_bpi-r4-initramfs-recovery.itb
+  bootm 0x50000000#config-mt7988a-bananapi-bpi-r4#mt7988a-bananapi-bpi-r4-sd
 ===== Known Issues =====
-* Card in M.2 slot causes i2c issues (sfp not detected): https://forum.banana-pi.org/t/bpi-r4-nvme-i2c/17152/2
+  * Card in M.2 slot causes i2c issues (sfp not detected): https://forum.banana-pi.org/t/bpi-r4-nvme-i2c/17152/2
+  * pcie2 and some others (offloading with 4G, multiple ppe, rss/lro) not yet working (https://forum.banana-pi.org/t/banana-pi-bpi-r4-wifi-7-router-board-with-mediatek-mt7988a-filogic-880-4g-ram-and-8g-emmc/15757/241)