linux-firmware: Update brcmfmac43430 to 7.45.41.46

The version of this firmware provided by linux-firmware is 7.45.41.26. This
version seems to have connectivity issues when bonding interfaces. Raspbian
included an updated version (7.45.41.46) which tested, proved to fix this
problem (see https://github.com/resin-os/meta-resin/issues/812).

The version Raspbian is providing is not yet in linux-firmware as they have it
directly from Cypress (see https://github.com/RPi-Distro/repo/issues/88).
Besides the issue described above, it fixes various other issues including a
broadpwn fix.

Hopefully this version, or a newer one, will end up in upstream soon. In order
to catch when that happens and stop overwriting this firmware, a check is added
in the racipe based on the md5sum of the current shipped firmware.

In terms of ditribution license, we got an informal one in the github thread
mentioned above.

Signed-off-by: Andrei Gherzan <andrei@gherzan.com>

3 files changed, 27 insertions, 20 deletions

diff --git a/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.bin b/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.bin
new file mode 100644
index 0000000..6b955da
--- /dev/null
+++ b/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.bin
diff --git a/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.txt b/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.txt
index ea4f648..3d917a7 100644
--- a/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.txt
+++ b/recipes-kernel/linux-firmware/files/brcmfmac43430-sdio.txt
@@ -1,19 +1,20 @@
-# NVRAM file for BCM943430WLPTH
+# NVRAM file for BCM943430WLSELG
 # 2.4 GHz, 20 MHz BW mode
 
 # The following parameter values are just placeholders, need to be updated.
 manfid=0x2d0
-prodid=0x0727
+prodid=0x0726
 vendid=0x14e4
 devid=0x43e2
-boardtype=0x0727
-boardrev=0x1101
+boardtype=0x0726
+boardrev=0x1202
 boardnum=22
 macaddr=00:90:4c:c5:12:38
 sromrev=11
 boardflags=0x00404201
 boardflags3=0x08000000
 xtalfreq=37400
+#xtalfreq=19200
 nocrc=1
 ag0=255
 aa2g=1
@@ -21,6 +22,7 @@ ccode=ALL
 
 pa0itssit=0x20
 extpagain2g=0
+
 #PA parameters for 2.4GHz, measured at CHIP OUTPUT
 pa2ga0=-168,7161,-820
 AvVmid_c0=0x0,0xc8
@@ -40,15 +42,9 @@ ofdmdigfilttypebe=18
 # PAPD mode:
 papdmode=1
 papdvalidtest=1
-pacalidx2g=42
-papdepsoffset=-22
-papdendidx=58
-
-# LTECX flags
-ltecxmux=0
-ltecxpadnum=0x0102
-ltecxfnsel=0x44
-ltecxgcigpio=0x01
+pacalidx2g=32
+papdepsoffset=-36
+papdendidx=61
 
 il0macaddr=00:90:4c:c5:12:38
 wl0id=0x431b
@@ -61,6 +57,3 @@ muxenab=0x1
 
 #VCO freq 326.4MHz
 spurconfig=0x3 
-
-edonthd20l=-75
-edoffthd20ul=-80
diff --git a/recipes-kernel/linux-firmware/linux-firmware_%.bbappend b/recipes-kernel/linux-firmware/linux-firmware_%.bbappend
index 252da22..565b735 100644
--- a/recipes-kernel/linux-firmware/linux-firmware_%.bbappend
+++ b/recipes-kernel/linux-firmware/linux-firmware_%.bbappend
@@ -1,12 +1,26 @@
 FILESEXTRAPATHS_prepend := "${THISDIR}/files:"
 
-SRC_URI += "file://brcmfmac43430-sdio.txt"
+SRC_URI += " \
+        file://brcmfmac43430-sdio.bin \
+        file://brcmfmac43430-sdio.txt \
+        "
 
 do_install_append() {
-        install -D -m 0644 ${WORKDIR}/brcmfmac43430-sdio.txt ${D}/lib/firmware/brcm/brcmfmac43430-sdio.txt
+        # Overwrite v7.45.41.26 by the one we currently provide in this layer
+        # (v7.45.41.46)
+        local _firmware="brcmfmac43430-sdio.bin"
+        local _oldmd5=9258986488eca9fe5343b0d6fe040f8e
+        if [ "$(md5sum ${D}/lib/firmware/brcm/$_firmware | awk '{print $1}')" != "$_oldmd5" ]; then
+                _firmware=""
+                bbwarn "linux-firmware stopped providing brcmfmac43430 v7.45.41.26."
+        else
+                _firmware="${WORKDIR}/$_firmware"
+        fi
+
+        mkdir -p ${D}/lib/firmware/brcm
+        install -m 0644 $_firmware ${WORKDIR}/brcmfmac43430-sdio.txt ${D}/lib/firmware/brcm
 }
 
 FILES_${PN}-bcm43430 += " \
-  /lib/firmware/brcm/brcmfmac43430-sdio.txt \
+        /lib/firmware/brcm/brcmfmac43430-sdio.txt \
 "
-