linux-firmware: add support for Marvell SDIO 8997

For example, Turris MOX SDIO card is using Marvell (NXP) 88W8997 chip.

Technical specs of 88W8997:
- 28nm
- 802.11 ac wave-2
It should support simultaneous dual-band 2.4 GHz and 5 GHz,
but it requires to support multiSSID for one Wi-Fi card [1], which is
not supported in OpenWrt, yet and if we tried to run two instances of
hostapd, it didn't work well, so it's 2.4 GHz or 5 GHz.
- 2x2 MU-MIMO
- Bluetooth 5.1 with LE support
- Unfortunately, there can be connected only 8 clients at the same time
(limited by FW, however, there exists "enterprise" chip, its equal chip,
it is just different that it uses different FW)

Symlink is necessary as mwifiex_sdio tries to load sd8997_uapsta.bin
[   13.651182] mwifiex_sdio mmc0:0001:1: Direct firmware load for mrvl/sd8997_uapsta.bin failed with error -2
[   13.661065] mwifiex_sdio mmc0:0001:1: Falling back to user helper
[   13.684880] firmware mrvl!sd8997_uapsta.bin: firmware_loading_store: map pages failed
[   13.695910] mwifiex_sdio mmc0:0001:1: Failed to get firmware mrvl/sd8997_uapsta.bin
[   13.703774] mwifiex_sdio mmc0:0001:1: info: _mwifiex_fw_dpc: unregister device

Pali Rohár sent two patches [2] [3] into kernel to fix default firmware name for SD8997, so
the symlink will not be required in the future versions of kernel, which
was accepted and right now, according to my details it was backported to 5.8, 5.7 and 5.4

[1] https://bugs.openwrt.org/index.php?do=details&task_id=3243
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=00eb0cb36fad5
[3] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=2e1fcac52a9ea

Signed-off-by: Josef Schlehofer <pepe.schlehofer@gmail.com>

diff --git a/package/firmware/linux-firmware/Makefile b/package/firmware/linux-firmware/Makefile
index ad3363ebd9d109b867c940169e4e3aeceafde8c8..7dbcbdd8a3188149a763ec7da7e47a311854593c 100644 (file)
--- a/package/firmware/linux-firmware/Makefile
+++ b/package/firmware/linux-firmware/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=linux-firmware
 PKG_VERSION:=20200817
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_URL:=@KERNEL/linux/kernel/firmware
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz

diff --git a/package/firmware/linux-firmware/marvell.mk b/package/firmware/linux-firmware/marvell.mk
index 6c3f171216cc74f36d528af63c737d3ce6838fd6..78edac0ff3b88ed96edbbf4318c3d1fdfe90447e 100644 (file)
--- a/package/firmware/linux-firmware/marvell.mk
+++ b/package/firmware/linux-firmware/marvell.mk
@@ -20,12 +20,14 @@ define Package/mwifiex-pcie-firmware/install
 endef
 $(eval $(call BuildPackage,mwifiex-pcie-firmware))
 
-Package/mwifiex-sdio-firmware = $(call Package/firmware-default,Marvell 8887 firmware)
+Package/mwifiex-sdio-firmware = $(call Package/firmware-default,Marvell 8887/8997 firmware)
 define Package/mwifiex-sdio-firmware/install
        $(INSTALL_DIR) $(1)/lib/firmware/mrvl
        $(INSTALL_DATA) \
                $(PKG_BUILD_DIR)/mrvl/sd8887_uapsta.bin \
+               $(PKG_BUILD_DIR)/mrvl/sdsd8997_combo_v4.bin \
                $(1)/lib/firmware/mrvl/
+       ln -s ../mrvl/sdsd8997_combo_v4.bin $(1)/lib/firmware/mrvl/sd8997_uapsta.bin
 endef
 $(eval $(call BuildPackage,mwifiex-sdio-firmware))