linux-kernel - [RFC 3/3] MIPS: configs: ci20: enable drivers we need for WiFi/Bluetooth

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Date:   Wed, 15 Feb 2023 18:31:58 +0100
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Paul Cercueil <paul@...pouillou.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Arnd Bergmann <arnd@...db.de>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     riccardo Mottola <riccardo.mottola@...ero.it>, paul@...die.org.uk,
        linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, letux-kernel@...nphoenux.org,
        kernel@...a-handheld.com,
        "H. Nikolaus Schaller" <hns@...delico.com>
Subject: [RFC 3/3] MIPS: configs: ci20: enable drivers we need for WiFi/Bluetooth

We need to add CONFIG to load the serdev Bluetooth driver
from the DTS hints.

Bluetooth must be configured as built into the kernel, otherwise
some components will be loaded in the wrong order.

WLAN must be configured as a kernel module, otherwise the driver will
not be loaded properly by the SDIO subsystem. If it is started too early,
there is no root file system (if initrd is not present) with the
required brcm/BCM4330B1.hcd firmware.

The pcf8563 driver should not be enabled because it can interrupt the
32 kHz clock after the modules are already powered on, depending on the
random driver probe sequence.

Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
---
 arch/mips/configs/ci20_defconfig | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/arch/mips/configs/ci20_defconfig b/arch/mips/configs/ci20_defconfig
index 11f08b6a3013f..2f58d4da30ffb 100644
--- a/arch/mips/configs/ci20_defconfig
+++ b/arch/mips/configs/ci20_defconfig
@@ -68,7 +68,17 @@ CONFIG_DM9000_FORCE_SIMPLE_PHY_POLL=y
 # CONFIG_NET_VENDOR_STMICRO is not set
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
-# CONFIG_WLAN is not set
+CONFIG_WLAN=y
+CONFIG_WLAN_VENDOR_BROADCOM=y
+CONFIG_WIRELESS_EXT=y
+CONFIG_WEXT_CORE=y
+CONFIG_WEXT_PROC=y
+CONFIG_WEXT_PRIV=y
+CONFIG_CFG80211=m
+CONFIG_CFG80211_WEXT=y
+CONFIG_MAC80211=m
+CONFIG_BRCMFMAC=m
+CONFIG_BRCMFMAC_SDIO=y
 CONFIG_KEYBOARD_GPIO=m
 # CONFIG_INPUT_MOUSE is not set
 CONFIG_VT_HW_CONSOLE_BINDING=y
@@ -211,3 +221,9 @@ CONFIG_STACKTRACE=y
 # CONFIG_FTRACE is not set
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE="earlycon console=ttyS4,115200 clk_ignore_unused"
+# CONFIG_RTC_DRV_PCF8563 is not set
+CONFIG_BT=y
+CONFIG_BT_HCIUART=y
+CONFIG_BT_HCIUART_BCM=y
+CONFIG_SERIAL_DEV_BUS=y
+CONFIG_SERIAL_DEV_CTRL_TTYPORT=y
-- 
2.38.1