xavier nx平台调试sdio WiFi模块

1. 前言

使用WiFi板与Jetson Xavier NX模块连接调试。
模块是BCM43455模块，使用的是SDIO接口。

dts定义如下：

sdhci@3440000 { 
           #address-cells = <1>;
           #size-cells = <0>;
            compatible = "nvidia,tegra194-sdhci";
            reg = <0x0 0x3440000 0x0 0x00020000>;
            interrupts = < 0 TEGRA194_IRQ_SDMMC3 0x04>;
            iommus = <&smmu TEGRA_SID_SDMMC3A>;
            dma-coherent;
            max-clk-limit = <208000000>;
            bus-width = <4>;
            cap-mmc-highspeed;
            cap-sd-highspeed;
            sd-uhs-sdr104;
            sd-uhs-sdr50;
            sd-uhs-sdr25;
            sd-uhs-sdr12;
            mmc-ddr-1_8v;
            mmc-hs200-1_8v;
            cd-inverted;
            nvidia,min-tap-delay = <96>;
            nvidia,max-tap-delay = <139>;
            nvidia,vqmmc-always-on;
            pwrdet-support;
            pinctrl-names = "sdmmc_e_33v_enable", "sdmmc_e_33v_disable";
            pinctrl-0 = <&sdmmc3_e_33V_enable>;
            pinctrl-1 = <&sdmmc3_e_33V_disable>;
            ignore-pm-notify;
            resets = <&bpmp_resets TEGRA194_RESET_SDMMC3>;
            reset-names = "sdhci";
            pll_source = "pll_p", "pll_c4_muxed";
            nvidia,set-parent-clk;
            nvidia,parent_clk_list = "pll_p", "pll_p", "pll_p", "pll_p", "pll_p", "pll_c4_muxed", "pll_c4_muxed", "pll_c4_muxed", "pll_c4_muxed", "pll_c4_muxed", "NULL";
            clocks = <&bpmp_clks TEGRA194_CLK_SDMMC3>,
                    <&bpmp_clks TEGRA194_CLK_PLLP_OUT0>,
                    <&bpmp_clks TEGRA194_CLK_PLLC4_MUXED>,
                    <&bpmp_clks TEGRA194_CLK_SDMMC_LEGACY_TM>;
            clock-names = "sdmmc", "pll_p", "pll_c4_muxed", "sdmmc_legacy_tm";
            uhs-mask = <0x08>;
            nvidia,en-periodic-calib;
           status = "okay";
           brcmf: wifi@0 {
                   reg = <0>;
                   compatible = "brcm,bcm4329-fmac";
           };
   };
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
<
登录后即可复制

sdhci正常注册

[ 5.285300] sdhci-tegra 3440000.sdhci: Client registration for eMC Successful
1
登录后即可复制

但WiFi模块探测本身没有发生

WIFI固件如下

~$ ls -l /lib/firmware/brcm/brcmfmac43455-sdio.bin
-rw-r–r-- 1 root root 488193 Mar 30 2017 /lib/firmware/brcm/brcmfmac43455-sdio.bin
1
2
登录后即可复制

开启内核配置

CONFIG_CFG80211=y
CONFIG_BRCMUTIL=y
CONFIG_BRCMFMAC=y
CONFIG_BRCMFMAC_SDIO=y
1
2
3
4
登录后即可复制

2. 查询 driver & dmesg & 硬件

（1）/sys/bus/sdio/drivers

$ ls -l /sys/bus/sdio/drivers
total 0
drwxr-xr-x 2 root root 0 Sep 24 14:04 brcmfmac
$ ls -l /sys/bus/sdio/devices
total 0
1
2
3
4
5
登录后即可复制

（2）查询dmesg

可能SDIO没有被枚举出来
问题不是fw或客户端驱动程序
这是TX2上的sdio wifi日志

[ 1.461159] sdhci-tegra 3440000.sdhci: Client registration for eMC Successful
[ 1.506029] mmc1: SDHCI controller on 3440000.sdhci [3440000.sdhci] using ADMA 64-bit with 64 bit addr
[ 1.757516] mmc1: hw tuning done …
[ 1.761158] mmc1: new ultra high speed SDR104 SDIO card at address 0001
1
2
3
4
登录后即可复制

（3）检测硬件
在启动时能看到时钟

原理图

3. 咨询nvidia FAE

提到Xavier系列不支持SDIO wifi

我们的软件不验证任何类型的wifi卡在Xavier系列芯片上的SDIO，
我们没有这样做的计划。
因此，你仍然可以尝试，但我们可能不会提供太多经验，因
为它也没有经过我们这边的验证。
只有TX1和TX2是验证过sdio WiFi的。

我不能给你一个明确的“是”或“否”的答案，因为这是我们尚未核实的事情，
目前也没有相关计划。
也许其他用户也有成功的经验。
但是从官方支持的角度来看，我们建议用户在Xavier系列中使用Wifi而不是SDIO
1
2
3
4
5
6
7
8
9
10
登录后即可复制

4. 调试记录

（1）修改sdhci 设备树

 sdhci@700b0400 { /* SDMMC3 for Wifi */
           #address-cells = <1>;
            #size-cells = <0>;
           force-non-removable-rescan;
           non-removable;
           status = "okay";

           brcmf: brcmf@0 {
                   reg = <0>;
                   compatible = "brcm,bcm4329-fmac";
           };
   };
1
2
3
4
5
6
7
8
9
10
11
12
登录后即可复制

有时我在mmc1上得到这个错误，

[ 5.466191] mmc1: CMD CRC or end bit error, int mask 0xc0001
[ 5.466589] mmc1: CMD CRC or end bit error, int mask 0xc0000
[ 5.466987] mmc1: CMD CRC or end bit error, int mask 0xc0000
[ 5.467382] mmc1: CMD CRC or end bit error, int mask 0xc0000
1
2
3
4
登录后即可复制

（2）是否使用一个永远开机的电源作为wifi模块的VIN
当“WL_REG_ON”变高时，启用VIN_LDO (1.3v)

（3）系统启动时是否启用GPIO12 (WL_REG_ON) ?
是的，系统启动时启用GPIO12 (WL_REG_ON)

我在dts中这样定义，以便在引导时启用GPIO12

gpio: gpio@6000d000 {
wlan-output-high {
gpio-hog;
output-high;
gpios = <TEGRA_GPIO(Y, 2) GPIO_ACTIVE_HIGH>;
label = “wlan-out-high”;
};
}
1
2
3
4
5
6
7
8
登录后即可复制

SDIO时钟只在启动时被看到
GPIO12(WL_REG_ON)-在SDIO时钟激活前启用
仍然没有枚举SDIO和WiFi客户端驱动程序探测没有发生

[ 1.595331] mmc1: new ultra high speed SDR104 SDIO card at address 0001
and WiFi client driver probe is happening
1
2
登录后即可复制

（4）dts只设置成1.8v

WiFi加载正常

我可以在Jetson Nano上打开wifi，但同样的驱动程序在Xavier NX上不能工作
错误如下：

[ 8.279684] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30)
[ 11.551637] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code (0x30 0x30)
[ 14.166818] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
[ 17.494892] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
[ 17.495084] brcmfmac: brcmf_cfg80211_get_channel: chanspec failed (-110)
[ 23.386799] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
[ 23.386994] brcmfmac: brcmf_cfg80211_get_tx_power: error (-110)
[ 26.454885] brcmfmac: brcmf_do_escan: error (-110)
[ 26.455009] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[ 27.443516] brcmfmac: brcmf_run_escan: error (-4)
[ 27.443643] brcmfmac: brcmf_cfg80211_scan: scan error (-4)
[ 80.215022] brcmfmac: _brcmf_set_multicast_list: Setting mcast_list failed, -110
[ 105.302828] brcmfmac: brcmf_proto_bcdc_query_dcmd: brcmf_proto_bcdc_msg failed w/status -110
[ 105.303017] brcmfmac: brcmf_cfg80211_get_channel: chanspec failed (-110)
[ 315.990889] brcmfmac: brcmf_do_escan: error (-110)
[ 315.991134] brcmfmac: brcmf_cfg80211_scan: scan error (-110)
[ 386.088003] brcmfmac: brcmf_run_escan: error (-4)
[ 386.088224] brcmfmac: brcmf_cfg80211_scan: scan error (-4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
<
登录后即可复制

Wlan0正常，但我不能连接任何wifi网络

$ ifconfig
wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 48:eb:62:c0:f0:87 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
1
2
3
4
5
6
7
登录后即可复制

$ nmcli device wifi list
IN-USE SSID MODE CHAN RATE SIGNAL BARS SECURITY
arunkumar Infra 4 270 Mbit/s 37 ▂▄__ WPA2
1
2
3
登录后即可复制

（5）检查syslog

[ 368.989771] ieee80211 phy0: brcmf_escan_timeout: timer expired
[ 376.575141] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 386.909776] ieee80211 phy0: brcmf_escan_timeout: timer expired
[ 414.301765] ieee80211 phy0: brcmf_escan_timeout: timer expired
[ 444.720654] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 455.005784] ieee80211 phy0: brcmf_escan_timeout: timer expired
[ 473.437767] ieee80211 phy0: brcmf_escan_timeout: timer expired
[ 488.406253] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
1
2
3
4
5
6
7
8
登录后即可复制

5. 解决办法

修改sdhci为如下：

sdhci@3440000 {
#address-cells = <1>;
#size-cells = <0>;
non-removable;
force-non-removable-rescan;
no-sd;
max-clk-limit = <25000000>;
only-1-8-v;
status = “okay”;
brcmf: brcmf@0 {
reg = <0>;
compatible = “brcm,bcm4329-fmac”;
};
};
1
2
3
4
5
6
7
8
9
10
11
12
13
14
登录后即可复制

并使用最新的brcmfmac驱动程序
地址如下：

https://community.cypress.com/t5/Resource-Library/Cypress-Linux-WiFi-Driver-Release-FMAC-2020-09-25/ta-p/251089
1
登录后即可复制