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本帖最后由 一只耳朵怪 于 2018-6-5 15:05 编辑
补充： 之前弄错了，我们用的是MMC2，dts文件里的mmc3，修改后依旧WIFI无法工作 大家好，请教下，我们使用RTL8723BSwifi模块，驱动加载成功了，但是probe函数未被调用是怎么回事？ GPIO3-14是WIFI的使能，低的时候poweron WIFI. 注释掉dma是因为有“错误提示 [ 1.378795] /ocp/mmc@481d8000: could not get #dma-cells for /ocp/l4_wkup@44c00000/prcm@200000/clocks/dpll_disp_ck [ 1.391306] omap_hsmmc 481d8000.mmc: RX DMA channel request failed ” dst修改参考的是am335x-evmsk 具体如下： &mmc2 [ /* these are on the cros***ar and are outlined in the xbar-event-map element */ /* dmas = <&edma 12 &edma 13>; dma-names = "tx", "rx";*/ status = "okay"; vmmc-supply = <&wlan_en_reg>; bus-width = <4>; pinctrl-names = "default"; pinctrl-0 = <&mmc2_pins_default >; ti,non-removable; ti,needs-special-hs-handling; cap-power-off-card; keep-power-in-suspend; #address-cells = <1>; #size-cells = <0>; rtl8723bs_wifi: rtl8723bs_wifi@0 [ compatible = "ti,8723bs"; reg = <2>; ]; ]; wlan_en_reg: fixedregulator@2 [ compatible = "regulator-fixed"; regulator-name = "wlan-en-regulator"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; pinctrl-names = "default"; pinctrl-0 = <&wlan_pins_default>; /* WLAN_EN GPIO for this board - Bank1, pin16 */ /*gpio = <&gpio1 16 0>;*/ gpio = <&gpio3 14 0>; /* WLAN card specific delay */ startup-delay-us = <70000>; enable-active-high; ]; mmc2_pins_default: mmc2_pins_default [ pinctrl-single,pins = < 0x8c ( PIN_INPUT | MUX_MODE3 ) /* (V12) gpmc_clk.mmc2_clk */ 0x88 ( PIN_OUTPUT | MUX_MODE3 ) /* (T13) gpmc_csn3.mmc2_cmd */ 0x44 ( PIN_INPUT | MUX_MODE3 ) /* (V14) gpmc_a1.mmc2_dat0 */ 0x48 ( PIN_INPUT | MUX_MODE3 ) /* (U14) gpmc_a2.mmc2_dat1 */ 0x4c ( PIN_INPUT | MUX_MODE3 ) /* (T14) gpmc_a3.mmc2_dat2 */ 0x78 ( PIN_INPUT | MUX_MODE3 ) /* (U18) gpmc_be1n.mmc2_dat3 */ >; ]; /* wl12xx/wl18xx card enable/irq GPIOs. */ wlan_pins_default: pinmux_wlan_pins_default [ pinctrl-single,pins = < 0x190 ( PIN_INPUT | MUX_MODE7 ) /* (A13) mcasp0_aclkx.gpio3[14] */ /* 0x198 ( PIN_INPUT | MUX_MODE7 ) /* (D12) mcasp0_axr0.gpio3[16] */ >; ]; 
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6个回答
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这个probe()函数，你是指hsmmc_omap.c里的mmc probe()函数么？
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是WIFI的probe。 有些奇怪的是我在dts中配置的MMC电压是3.3v，为什么Log信息里是1.8V？会不会和这个有关系？ MMC的log如下 [ 1.795855] [huzz]mmc_of_parse [ 1.798952] omap_hsmmc 481d8000.mmc: GPIO lookup for consumer cd [ 1.798962] omap_hsmmc 481d8000.mmc: using device tree for GPIO lookup [ 1.798976] of_get_named_gpiod_flags: can't parse 'cd-gpios' property of node '/ocp/mmc@481d8000[0]' [ 1.798986] of_get_named_gpiod_flags: can't parse 'cd-gpio' property of node '/ocp/mmc@481d8000[0]' [ 1.798994] omap_hsmmc 481d8000.mmc: using lookup tables for GPIO lookup [ 1.799004] omap_hsmmc 481d8000.mmc: lookup for GPIO cd failed [ 1.799016] omap_hsmmc 481d8000.mmc: GPIO lookup for consumer wp [ 1.799025] omap_hsmmc 481d8000.mmc: using device tree for GPIO lookup [ 1.799033] of_get_named_gpiod_flags: can't parse 'wp-gpios' property of node '/ocp/mmc@481d8000[0]' [ 1.799042] of_get_named_gpiod_flags: can't parse 'wp-gpio' property of node '/ocp/mmc@481d8000[0]' [ 1.799050] omap_hsmmc 481d8000.mmc: using lookup tables for GPIO lookup [ 1.799058] omap_hsmmc 481d8000.mmc: lookup for GPIO wp failed [ 1.799479] omap_hsmmc 481d8000.mmc: unable to get vmmc_aux regulator -19 [ 1.799502] omap_hsmmc 481d8000.mmc: unable to get pbias regulator -19 [ 1.799658] mmc1: clock 0Hz busmode 2 powermode 1 cs 0 Vdd 21 width 0 timing 0 [ 1.873713] omap_hsmmc 481d8000.mmc: Initial signal voltage of 1.8v [ 1.893678] mmc1: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 timing 0 [ 1.913696] [huzz]drivers/mmc/core/core.c:mmc_rescan_try_freq [ 1.919471] mmc1: mmc_rescan_try_freq: trying to init card at 400000 Hz [ 1.926449] vdd_mpu: supplied by vmmcsd_fixed mmc1: starting CMD52 arg 00000c00 flags 00000195 [ 2.488719] mmc1: req done (CMD52): -16: 00000000 00000000 00000000 00000000 [ 2.488738] mmc1: starting CMD52 arg 80000c08 flags 00000195 [ 2.987207] mmc1: req done (CMD52): -16: 00000000 00000000 00000000 00000000 [ 2.987223] mmc1: clock 400000Hz busmode 2 powermode 2 cs 1 Vdd 21 width 0 timing 0 [ 2.988241] mmc1: starting CMD0 arg 00000000 flags 000000c0 [ 2.988417] mmc1: req done (CMD0): 0: 00000000 00000000 00000000 00000000 [ 2.989450] mmc1: clock 400000Hz busmode 2 powermode 2 cs 0 Vdd 21 width 0 timing 0 [ 2.990462] mmc1: starting CMD8 arg 000001aa flags 000002f5 [ 2.990826] mmc1: req done (CMD8): -110: 00000000 00000000 00000000 00000000 [ 2.990847] [huzz]drivers/mmc/core/sdio.c:mmc_attach_sdio [ 2.996288] mmc1: starting CMD5 arg 00000000 flags 000002e1 [ 2.996654] mmc1: req failed (CMD5): -110, retrying... [ 2.997017] mmc1: req failed (CMD5): -110, retrying... [ 2.997379] mmc1: req failed (CMD5): -110, retrying... [ 2.997734] mmc1: req done (CMD5): -110: 00000000 00000000 00000000 00000000 [ 2.997750] [huzz]drivers/mmc/core/sdio.c:mmc_attach_sdio:mmc_send_io_op_cond failed,-110 [ 3.006007] [huzz]drivers/mmc/core/sd.c:mmc_attach_sd [ 3.011083] mmc1: starting CMD55 arg 00000000 flags 000000f5 [ 3.011442] mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 [ 3.011463] mmc1: starting CMD55 arg 00000000 flags 000000f5 [ 3.011820] mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 [ 3.011840] mmc1: starting CMD55 arg 00000000 flags 000000f5 [ 3.012196] mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 [ 3.012219] mmc1: starting CMD55 arg 00000000 flags 000000f5 [ 3.012574] mmc1: req done (CMD55): -110: 00000000 00000000 00000000 00000000 [ 3.012594] [huzz]drivers/mmc/core/sd.c:mmc_attach_sd:mmc_send_app_op_cond failed -110 [ 3.020575] [huzz]drivers/mmc/core/mmc.c:mmc_attach_mmc [ 3.025847] mmc1: clock 400000Hz busmode 1 powermode 2 cs 0 Vdd 21 width 0 timing 0 [ 3.025861] mmc1: starting CMD1 arg 00000000 flags 000000e1 [ 3.026220] mmc1: req done (CMD1): -110: 00000000 00000000 00000000 00000000 [ 3.026240] [huzz]drivers/mmc/core/mmc.c:mmc_attach_mmc:mmc_send_op_cond failed,-110 [ 3.034032] mmc1: clock 0Hz busmode 2 powermode 0 cs 0 Vdd 0 width 0 timing 0 [ 3.133682] omap_hsmmc 481d8000.mmc: disabled |
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uweuewyfydsf 发表于 2018-6-4 02:28 这个wifi驱动文件ti,8723bs已经放到内核了吗？ |
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是的，WIFI驱动由厂家提供。目前碰到的问题是 1.omap_hsmmc_set_capabilities这个函数中，val = OMAP_HSMMC_READ(host->base, CAPA)，寄存器CAPA的值MMC0和MMC2不一样，这个是为什么？ 2.WIFI驱动加载过程中SDIO的数据通讯没问题，SD_CLK和SD_CMD都有信号，但是当初始化到CMD53这个命令的时候，没有返回值，卡住没响应了。 厂家说需要类似rescan的函数来控制，我移植了amlogic m805的sdio_reinit函数(我们另外的项目m805上，用的也是rtl8723bs的模块)，但是没有效果，依旧卡死在CMD53这个命令，Eggsy，请帮忙给分析一下，谢谢。 根据你发来的log，应该是在软件里面没有rescan,可参考platform_ARM_SUNnI_sdio.c rescan的代码需要找处理器的平台厂商要！ 有rescan的kernel的log参考如下： |
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uweuewyfydsf 发表于 2018-6-4 02:47 这个问题和你另外一个帖子发的问题是一样的吧，我在那个帖子已经给你解释了，CMD53这个command 要看wifi能不能识别并且给出response。 |
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zizhen 您好:
請問您GPIO3-14的接腳是接到RTL8723BSwifi模块的哪隻接腳呢? 至於SDIO的PINMUX部分想請問gpmc_csn3.mmc2_cmd為何是設定 0x88 ( PIN_OUTPUT | MUX_MODE3 ) ? 我GOOGLE到的資料都為 0x88 (PIN_INPUT_PULLUP | MUX_MODE3 )，想請問您其中的差別，感謝。 |
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