AP6236 WiFi模块调试记录
Platform: RK3368
OS: Android 6.0
Kernel: 3.10.0
文章目录
内核驱动移植
1. 更新驱动
先将供应商给的最新wifi驱动更新到kernel中:drivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/
1.1 修改驱动代码,适配rk平台
修改Makefile中的WiFi配置:
diff --git a/Makefile b/Makefile
index 5beada4..fdd9e22 100644
--- a/Makefile
+++ b/Makefile
@@ -2,16 +2,17 @@
# 1. WL_IFACE_COMB_NUM_CHANNELS must be added if Android version is 4.4 with Kernel version 3.0~3.4,
# otherwise please remove it.
-#CONFIG_BCMDHD := m
-#CONFIG_BCMDHD_SDIO := y
+CONFIG_BCMDHD := y
+CONFIG_BCMDHD_SDIO := y
#CONFIG_BCMDHD_PCIE := y
#CONFIG_BCMDHD_USB := y
-#CONFIG_BCMDHD_OOB := y
+CONFIG_BCMDHD_OOB := y
#CONFIG_BCMDHD_CUSB := y
CONFIG_BCMDHD_PROPTXSTATUS := y
+#CONFIG_BCMDHD_AG := y
#CONFIG_DHD_USE_STATIC_BUF := y
-#CONFIG_VTS_SUPPORT := y
+CONFIG_VTS_SUPPORT := y
CONFIG_MACH_PLATFORM := y
#CONFIG_BCMDHD_DTS := y
@@ -25,7 +26,9 @@ DHDCFLAGS = -Wall -Wstrict-prototypes -Dlinux -DBCMDRIVER \
-DMULTIPLE_SUPPLICANT -DTSQ_MULTIPLIER -DMFP \
-DWL_EXT_IAPSTA \
-DENABLE_INSMOD_NO_FW_LOAD \
- -Idrivers/net/wireless/bcmdhd -Idrivers/net/wireless/bcmdhd/include
+ -Idrivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd \
+ -Idrivers/net/wireless/rockchip_wlan/rkwifi/bcmdhd/include
+
DHDOFILES = aiutils.o siutils.o sbutils.o bcmutils.o bcmwifi_channels.o \
dhd_linux.o dhd_linux_platdev.o dhd_linux_sched.o dhd_pno.o \
修改dhd_gpio.c添加WiFi模块电源控制和sdio卡检测:
diff --git a/dhd_gpio.c b/dhd_gpio.c
index 0819d0c..25a44ba 100644
--- a/dhd_gpio.c
+++ b/dhd_gpio.c
@@ -2,6 +2,7 @@
#include <osl.h>
#include <dhd_linux.h>
#include <linux/gpio.h>
+#include <linux/rfkill-wlan.h>
#ifdef CUSTOMER_HW_PLATFORM
#include <plat/sdhci.h>
@@ -64,6 +65,7 @@ dhd_wlan_set_power(int on
}
#endif /* BCMPCIE */
#endif /* BUS_POWER_RESTORE */
+ rockchip_wifi_power(1);
/* Lets customer power to get stable */
mdelay(100);
} else {
@@ -92,6 +94,7 @@ dhd_wlan_set_power(int on
return -EIO;
}
}
+ rockchip_wifi_power(0);
}
return err;
@@ -116,6 +119,7 @@ static int dhd_wlan_set_carddetect(int present)
#elif defined(BCMPCIE)
printf("======== Card detection to detect PCIE card! ========\n");
#endif
+ rockchip_wifi_set_carddetect(1);
} else {
#if defined(BCMSDIO)
printf("======== Card detection to remove SDIO card! ========\n");
@@ -125,6 +129,7 @@ static int dhd_wlan_set_carddetect(int present)
#elif defined(BCMPCIE)
printf("======== Card detection to remove PCIE card! ========\n");
#endif
+ rockchip_wifi_set_carddetect(0);
}
#endif /* BUS_POWER_RESTORE */
@@ -157,6 +162,7 @@ static int dhd_wlan_get_mac_addr(unsigned char *buf)
bcopy(macpad, buf+6, sizeof(macpad));
}
#endif /* EXAMPLE_GET_MAC_VER2 */
+ err = rockchip_wifi_mac_addr(buf);
return err;
}
修改dhd_linux.c添加WiFi驱动模块加载入口和指定WiFi固件路径:
diff --git a/dhd_linux.c b/dhd_linux.c
index 936a6c8..c63333f 100644
--- a/dhd_linux.c
+++ b/dhd_linux.c
@@ -481,7 +481,7 @@ static int is_reboot = 0;
dhd_pub_t *g_dhd_pub = NULL;
#endif /* defined (BT_OVER_SDIO) */
-atomic_t exit_in_progress = ATOMIC_INIT(0);
+static atomic_t exit_in_progress = ATOMIC_INIT(0);
typedef struct dhd_if_event {
struct list_head list;
@@ -9915,6 +9915,8 @@ int dhd_bus_get_fw_mode(dhd_pub_t *dhdp)
return dhd_get_fw_mode(dhdp->info);
}
+extern int rkwifi_set_firmware(char *fw, char *nvram);
+
bool dhd_update_fw_nv_path(dhd_info_t *dhdinfo)
{
int fw_len;
@@ -9925,6 +9927,8 @@ bool dhd_update_fw_nv_path(dhd_info_t *dhdinfo)
const char *nv = NULL;
const char *clm = NULL;
const char *conf = NULL;
+ char firmware[100] = {0};
+ char nvram[100] = {0};
#ifdef DHD_UCODE_DOWNLOAD
int uc_len;
const char *uc = NULL;
@@ -9946,11 +9950,16 @@ bool dhd_update_fw_nv_path(dhd_info_t *dhdinfo)
/* set default firmware and nvram path for built-in type driver */
// if (!dhd_download_fw_on_driverload) {
+ rkwifi_set_firmware(firmware, nvram);
#ifdef CONFIG_BCMDHD_FW_PATH
fw = CONFIG_BCMDHD_FW_PATH;
+#else
+ fw = firmware;
#endif /* CONFIG_BCMDHD_FW_PATH */
#ifdef CONFIG_BCMDHD_NVRAM_PATH
nv = CONFIG_BCMDHD_NVRAM_PATH;
+#else
+ nv = nvram;
#endif /* CONFIG_BCMDHD_NVRAM_PATH */
// }
@@ -13276,7 +13285,7 @@ dhd_module_cleanup(void)
printf("%s: Exit\n", __FUNCTION__);
}
-static void __exit
+static void
dhd_module_exit(void)
{
atomic_set(&exit_in_progress, 1);
@@ -13285,11 +13294,12 @@ dhd_module_exit(void)
dhd_destroy_to_notifier_skt();
}
-static int __init
+static int
dhd_module_init(void)
{
int err;
int retry = POWERUP_MAX_RETRY;
+ atomic_set(&exit_in_progress, 0);
printf("%s: in %s\n", __FUNCTION__, dhd_version);
@@ -13347,7 +13357,46 @@ dhd_reboot_callback(struct notifier_block *this, unsigned long code, void *unuse
return NOTIFY_DONE;
}
+#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
+static int wifi_init_thread(void *data)
+{
+ dhd_module_init();
+
+ return 0;
+}
+#endif
+
+int rockchip_wifi_init_module_rkwifi(void)
+{
+ printk("=======================================================\n");
+ printk("==== Launching Wi-Fi driver! (Powered by Rockchip) ====\n");
+ printk("=======================================================\n");
+#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
+ struct task_struct *kthread = kthread_run(wifi_init_thread, NULL, "wifi_init_thread");
+ if (IS_ERR(kthread))
+ pr_err("create wifi_init_thread failed.\n");
+ return 0;
+#else
+ return dhd_module_init();
+#endif
+}
+
+void rockchip_wifi_exit_module_rkwifi(void)
+{
+ printk("=======================================================\n");
+ printk("== Dis-launching Wi-Fi driver! (Powered by Rockchip) ==\n");
+ printk("=======================================================\n");
+ dhd_module_exit();
+}
+#ifdef CONFIG_WIFI_LOAD_DRIVER_WHEN_KERNEL_BOOTUP
+late_initcall(rockchip_wifi_init_module_rkwifi);
+module_exit(rockchip_wifi_exit_module_rkwifi);
+#else
+EXPORT_SYMBOL(rockchip_wifi_init_module_rkwifi);
+EXPORT_SYMBOL(rockchip_wifi_exit_module_rkwifi);
+#endif
+#if 0
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
#if defined(CONFIG_DEFERRED_INITCALLS) && !defined(EXYNOS_PCIE_MODULE_PATCH)
#if defined(CONFIG_MACH_UNIVERSAL7420) || defined(CONFIG_SOC_EXYNOS8890) || \
@@ -13370,6 +13419,7 @@ module_init(dhd_module_init);
module_exit(dhd_module_exit);
+#endif
/*
* OS specific functions required to implement DHD driver in OS independent way
*/
修改dhd_linux_platdev.c,替换中断标志:
diff --git a/dhd_linux_platdev.c b/dhd_linux_platdev.c
index 3c6c171..a71a7d8 100644
--- a/dhd_linux_platdev.c
+++ b/dhd_linux_platdev.c
@@ -172,11 +172,19 @@ void* wifi_platform_get_prealloc_func_ptr(wifi_adapter_info_t *adapter)
int wifi_platform_get_irq_number(wifi_adapter_info_t *adapter, unsigned long *irq_flags_ptr)
{
+ if (irq_flags_ptr) {
+ *irq_flags_ptr = (IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL | IORESOURCE_IRQ_SHAREABLE) & IRQF_TRIGGER_MASK;
+ }
+
+ return rockchip_wifi_get_oob_irq();
+
+/*
if (adapter == NULL)
return -1;
if (irq_flags_ptr)
*irq_flags_ptr = adapter->intr_flags;
return adapter->irq_num;
+ */
}
int wifi_platform_set_power(wifi_adapter_info_t *adapter, bool on, unsigned long msec)
2. 修改RK平台代码
添加模块信息:
menuconfig添加AP6236选项,用来适配此wifi模块:
diff --git a/drivers/net/wireless/Kconfig b/drivers/net/wireless/Kconfig
index 10c0979409d..6c14c58909e 100755
--- a/drivers/net/wireless/Kconfig
+++ b/drivers/net/wireless/Kconfig
@@ -92,6 +92,10 @@ choice
bool "AP6234"
depends on RKWIFI
+ config AP6236
+ bool "AP6236"
+ depends on RKWIFI
+
config AP6330
bool "AP6330"
depends on RKWIFI
添加AP6236的固件所在路径:
diff --git a/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c b/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
index db94e7e79f6..562e1c91268 100644
--- a/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
+++ b/drivers/net/wireless/rockchip_wlan/rkwifi/rk_wifi_config.c
@@ -62,6 +62,11 @@ if (chip == WIFI_AP6234) {
sprintf(nvram, "%s%s", ANDROID_FW_PATH, "nvram_AP6234.txt");
}
+if (chip == WIFI_AP6236) {
+ sprintf(fw, "%s%s", ANDROID_FW_PATH, "fw_bcm43436b0.bin");
+ sprintf(nvram, "%s%s", ANDROID_FW_PATH, "nvram_ap6236.txt");
+}
+
if (chip == WIFI_AP6441) {
sprintf(fw, "%s%s", ANDROID_FW_PATH, "fw_bcm43341b0_ag.bin");
sprintf(nvram, "%s%s", ANDROID_FW_PATH, "nvram_AP6441.txt");
diff --git a/drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c b/drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c
index 2746daf3ae7..7fb560d08e6 100755
--- a/drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c
+++ b/drivers/net/wireless/rockchip_wlan/wifi_sys/rkwifi_sys_iface.c
@@ -46,7 +46,12 @@ static ssize_t wifi_chip_read(struct class *cls, struct class_attribute *attr, c
count = sprintf(_buf, "%s", "AP6234");
printk("Current WiFi chip is AP6234.\n");
}
-
+
+ if(type == WIFI_AP6236) {
+ count = sprintf(_buf, "%s", "AP6236");
+ printk("Current WiFi chip is AP6236.\n");
+ }
+
if(type == WIFI_AP6330) {
count = sprintf(_buf, "%s", "AP6330");
printk("Current WiFi chip is AP6330.\n");
diff --git a/include/linux/rfkill-wlan.h b/include/linux/rfkill-wlan.h
index 071f1b86c0b..4bf29511171 100755
--- a/include/linux/rfkill-wlan.h
+++ b/include/linux/rfkill-wlan.h
@@ -49,6 +49,7 @@ enum {
WIFI_AP6210,
WIFI_AP6212,
WIFI_AP6234,
+ WIFI_AP6236,
WIFI_AP6330,
WIFI_AP6335,
WIFI_AP6354,
diff --git a/net/rfkill/rfkill-wlan.c b/net/rfkill/rfkill-wlan.c
index 411dbfba70e..ba041bd10ee 100755
--- a/net/rfkill/rfkill-wlan.c
+++ b/net/rfkill/rfkill-wlan.c
@@ -88,6 +88,8 @@ static const char wlan_name[] =
#endif
#elif defined(CONFIG_AP6330)
"ap6330"
+#elif defined(CONFIG_AP6236)
+ "ap6236"
#elif defined(CONFIG_AP6476)
"ap6476"
#elif defined(CONFIG_AP6493)
@@ -113,6 +115,8 @@ int get_wifi_chip_type(void)
type = WIFI_AP6181;
} else if (strcmp(wifi_chip_type_string, "ap6234") == 0) {
type = WIFI_AP6234;
+ } else if (strcmp(wifi_chip_type_string, "ap6236") == 0) {
+ type = WIFI_AP6236;
} else if (strcmp(wifi_chip_type_string, "ap6330") == 0) {
type = WIFI_AP6330;
} else if (strcmp(wifi_chip_type_string, "ap6335") == 0) {
AP6236的蓝牙需要添加串口RTS控制,否则串口不通:
diff --git a/net/rfkill/rfkill-bt.c b/net/rfkill/rfkill-bt.c
index 3df55f92d07..072cacb0e5f 100755
--- a/net/rfkill/rfkill-bt.c
+++ b/net/rfkill/rfkill-bt.c
@@ -97,6 +97,8 @@ static const char bt_name[] =
#endif
#elif defined(CONFIG_AP6330)
"ap6330"
+#elif defined(CONFIG_AP6236)
+ "ap6236"
#elif defined(CONFIG_AP6476)
"ap6476"
#elif defined(CONFIG_AP6493)
@@ -266,7 +268,7 @@ static int rfkill_rk_set_power(void *data, bool blocked)
struct rfkill_rk_data *rfkill = data;
struct rfkill_rk_gpio *poweron = &rfkill->pdata->poweron_gpio;
struct rfkill_rk_gpio *reset = &rfkill->pdata->reset_gpio;
-#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335)
+#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335) || defined(CONFIG_AP6236)
struct rfkill_rk_gpio* rts = &rfkill->pdata->rts_gpio;
struct pinctrl *pinctrl = rfkill->pdata->pinctrl;
#endif
@@ -307,7 +309,7 @@ static int rfkill_rk_set_power(void *data, bool blocked)
msleep(20);
gpio_direction_output(reset->io, reset->enable);
}
-#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335)
+#if defined(CONFIG_AP6210) || defined(CONFIG_AP6335) || defined(CONFIG_AP6236)
if (pinctrl != NULL && gpio_is_valid(rts->io))
{
pinctrl_select_state(pinctrl, rts->gpio_state);
3 修改dts文件中的wifi配置,修改wireless-wlan节点里面:
wireless-wlan {
compatible = "wlan-platdata";
rockchip,grf = <&grf>;
/* wifi_chip_type - wifi chip define
* ap6210, ap6330, ap6335
* rtl8188eu, rtl8723bs, rtl8723bu
* esp8089
*/
wifi_chip_type = "ap6236";
sdio_vref = <3300>; //1800mv or 3300mv
//keep_wifi_power_on;
//power_ctrl_by_pmu;
//power_pmu_regulator = "rk818_ldo8_reg";
//power_pmu_enable_level = <1>; //1->HIGH, 0->LOW
//vref_ctrl_enable;
//vref_ctrl_gpio = <&gpio0 GPIO_A2 GPIO_ACTIVE_HIGH>;
//vref_pmu_regulator = "rk818_ldo8_reg";
//vref_pmu_enable_level = <1>; //1->HIGH, 0->LOW
WIFI,poweren_gpio = <&gpio3 GPIO_A4 GPIO_ACTIVE_HIGH>;
WIFI,host_wake_irq = <&gpio3 GPIO_A7 GPIO_ACTIVE_LOW>;
//WIFI,reset_gpio = <&gpio0 GPIO_A2 GPIO_ACTIVE_LOW>;
status = "okay";
};
wireless-bluetooth {
compatible = "bluetooth-platdata";
//wifi-bt-power-toggle;
uart_rts_gpios = <&gpio2 GPIO_D3 GPIO_ACTIVE_LOW>;
pinctrl-names = "default","rts_gpio";
pinctrl-0 = <&uart0_rts>;
pinctrl-1 = <&uart0_rts_gpio>;
//BT,power_gpio = <&gpio3 GPIO_A3 GPIO_ACTIVE_HIGH>;
BT,reset_gpio = <&gpio3 GPIO_D5 GPIO_ACTIVE_HIGH>; //bt_dis
BT,wake_gpio = <&gpio3 GPIO_A6 GPIO_ACTIVE_HIGH>;
BT,wake_host_irq = <&gpio3 GPIO_A2 GPIO_ACTIVE_HIGH>;
status = "okay";
};
Android系统适配
将wifi的firmware和nvram加到Android源码目录external/wlan_loader,与前面添加的模块信息中的文件名一致,编译时会自动复制到system/etc/firmware/:
firmware/fw_bcm43436b0.bin b/firmware/fw_bcm43436b0.bin
firmware/fw_bcm43436b0_apsta.bin b/firmware/fw_bcm43436b0_apsta.bin
firmware/nvram_ap6236.txt
遇到的问题
1. 蓝牙打不开
日志:
01-21 11:30:01.591 1122 1172 I bt_bluedroid: enable
01-21 11:30:01.592 1122 1173 D bt_stack_manager: event_start_up_stack is bringing up the stack.
01-21 11:30:01.605 1122 1173 I bt_hci : start_up
01-21 11:30:01.611 1122 1173 D WifiHW : check_wifi_chip_type_string: AP6236
01-21 11:30:01.611 1122 1173 D bt_vendor: vendor_open load libbt-vendor.so
01-21 11:30:01.622 1122 1173 I bt_vendor: alloc value 0xf3bf9301
01-21 11:30:01.622 1122 1173 I bt_vendor: init
01-21 11:30:01.622 1122 1173 E bt_userial_vendor: /dev/ttyS0 vnd_userial.port_name=libbt-vendor.so
01-21 11:30:01.622 1122 1173 I bt_vnd_conf: Attempt to load conf from /etc/bluetooth/bt_vendor.conf
01-21 11:30:01.623 1122 1173 I bt_hci : start_up bluetooth_rtk_h5_flag :0
01-21 11:30:01.623 1122 1173 D bt_vendor: op for 0
01-21 11:30:01.623 1122 1173 D bt_upio : is_emulator_context : 0
01-21 11:30:01.623 1122 1173 D bt_upio : is_rfkill_disabled ? [0]
01-21 11:30:01.623 1122 1173 D bt_upio : is_rfkill_disabled ? [0]
01-21 11:30:01.650 1122 1173 D bt_upio : Delay 500ms for bluetooth power up
01-21 11:30:02.150 1122 1173 D bt_vendor: op for 0
01-21 11:30:02.150 1122 1173 D bt_upio : is_emulator_context : 0
01-21 11:30:02.150 1122 1173 D bt_upio : is_rfkill_disabled ? [0]
01-21 11:30:02.290 1122 1173 D bt_upio : Delay 500ms for bluetooth power up
01-21 11:30:02.790 1122 1173 D bt_vendor: Delay for a while after BT power on
01-21 11:30:02.991 1122 1173 D bt_hci : start_up starting async portion
01-21 11:30:02.991 1122 1203 I bt_hci : event_finish_startup
01-21 11:30:02.991 1122 1203 I bt_hci_h4: hal_open
01-21 11:30:02.991 1122 1203 D bt_vendor: op for 3
01-21 11:30:02.991 1122 1203 I bt_userial_vendor: userial vendor open: opening /dev/ttyS0
01-21 11:30:02.992 1122 1203 I bt_userial_vendor: device fd = 52 open
01-21 11:30:02.993 1122 1203 D bt_vendor: op for 1
01-21 11:30:03.000 1122 1203 I bt_hwcfg: bt vendor lib: set UART baud 1500000
01-21 11:30:03.203 1122 1203 D bt_hwcfg: Chipset BCM43430B0
01-21 11:30:03.204 1122 1203 D bt_hwcfg: Target name = [BCM43430B0]
01-21 11:30:03.204 1122 1203 D WifiHW : check_wifi_chip_type_string: AP6236
01-21 11:30:03.204 1122 1203 I bt_hwcfg: BT module name is: AP6236, p_chip_id_str = BCM43430B0
01-21 11:30:03.204 1122 1203 I bt_hwcfg: Target HCD file name is: BCM43430B0.hcd
01-21 11:30:03.206 1122 1203 D bt_hwcfg: Target name = [BCM43430]
01-21 11:30:03.206 1122 1203 D WifiHW : check_wifi_chip_type_string: AP6236
01-21 11:30:03.206 1122 1203 I bt_hwcfg: BT module name is: AP6236, p_chip_id_str = BCM43430
01-21 11:30:03.206 1122 1203 I bt_hwcfg: Target HCD file name is: BCM43430.hcd
01-21 11:30:03.207 1122 1203 E bt_hwcfg: vendor lib preload failed to locate firmware patch file
01-21 11:30:03.207 1122 1203 I bt_hwcfg: Setting local bd addr to 22:22:95:1C:00:01
01-21 11:30:03.208 1122 1203 I bt_hwcfg: vendor lib fwcfg completed
01-21 11:30:03.208 1122 1203 I bt_vendor: firmware callback
01-21 11:30:03.208 1122 1203 I bt_hci : firmware_config_callback
解决办法:
将BCM43430.hcd文件放到vendor/rockchip/common/bluetooth/lib/firmware/目录下面,编译时会自动拷贝到/system/vendor/firmware/目录下面.
2. 在系统设置->WLAN中打开WiFi自动关闭
具体现象:
在系统设置->WLAN中,先连接一个WiFi热点,然后重启板子;进入系统后WiFi已经自动连接上之前保存的SSID,然后关闭WiFi再打开WiFi,出现打开WiFi自动关闭情况.
logcat:
[ 73.378836] [0:WifiStateMachin: 629] wl_android_wifi_on: Success
[ 73.418263] [0:WifiStateMachin: 629] [dhd] CFG80211-ERROR) __wl_update_wiphybands : error reading vhtmode (-23)
[ 73.432993] [0:WifiStateMachin: 629] dhd_open : the lock is released.
[ 73.433079] [0:WifiStateMachin: 629] dhd_open: Exit ret=0
[ 73.754200] [0: wpa_supplicant: 1394] P2P interface registered
[ 73.754343] [0: wpa_supplicant: 1394] wl_cfgp2p_add_p2p_disc_if: wdev: ffffffc02302ec00, wdev->net: (null)
[ 73.766470] [2: dhd_dpc: 1389] WLC_E_IF: NO_IF set, event Ignored
[ 73.769732] [1: wpa_supplicant: 1394] P2P interface started
[ 73.861211] [3: wpa_supplicant: 1394] dhd_ioctl_entry module exit in progress
[ 73.862132] [3: wpa_supplicant: 1394] dhd_ioctl_entry module exit in progress
[ 73.863011] [3: wpa_supplicant: 1394] dhd_ioctl_entry module exit in progress
[ 73.869035] [3: wpa_supplicant: 1394] dhd_ioctl_entry module exit in progress
解决办法:
修改WiFi驱动dhd_linux.c,将exit_in_progress初始化放到dhd_module_init中;因为驱动时build-in方式编译进kernel的,所以需要注意atomic的配对使用.
3. sdmmc通信报错
出错日志:
rk_sdmmc: ERROR Cmd response timeout hold times overflow. [mmc0]
解决办法:
修改/system/etc/firmware/config.txt,关闭自动休眠.
dhd_slpauto=0
或者采用轮询方式
dhd_poll=0
4. 32k晶振不起振
查看规格书发现32K晶振1脚需要悬空.
5. Wifi信号差
26M晶振的CL参数需要调整;
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