Hi3861 samlep_link驱动加载异常问题处理

问题现象

• 在T31 设备上加载海思提供的君正驱动之后，运行海思提供的sample_link 程序报错
• 错误提示1 j zmmc_v1.2 j zmmc_v1.2.1: polling status(0x00000800) error, op=53, status=0x1F000942
• 错误提示2 PIO mode: command response error
• 错误dmesg 日志

[16:53:01:544][   38.173966] j zmmc_v1.2 j zmmc_v1.2.0: register success!
[16:53:01:545][   38.183909] j zmmc_v1.2 j zmmc_v1.2.0: card inserted, state=0
[16:53:01:554][   38.213896] j zmmc_v1.2 j zmmc_v1.2.1: register success!
[16:53:01:555][   38.241701] [WARN]:27:hichannel 2021-06-1118:00:00
[16:53:01:565][   38.241734] [WARN]:148:oal_netlink_init is success
[16:53:01:565][   38.241734]
[16:53:01:566][   38.241766] [WARN]:109:oam_main_init SUCCESSFULLY
[16:53:01:575][   38.317115] mmc1: queuing unknown CIS tuple 0x91 (5 bytes)
[16:53:01:577][   38.317178] mmc1: new SDIO card at address 0001
[16:53:01:586][   38.319770] gpio:jz->reg = 0xb0010000
[16:53:01:587][   38.319784] gpio pin: 0x200
[16:53:01:588][   38.319789] jz->dev_map[0]: 0x1f8303c0
[16:53:01:598][   38.319801] CPU: 0 PID: 17 Comm: kworker/u2:1 Tainted: G           O 3.10.14-Archon #1
[16:53:01:599][   38.319833] Workqueue: kmmcd mmc_rescan [mmc_core]
[16:53:01:608][   38.319840] Stack : 804193b0 800630fc 000000008003ed28 8043d0e0 820bfb1c 820bfb1c 00000000
[16:53:01:620][   38.319840]    820bce80 8005d994 80502d8a 0000000000000000000000020000000000000000
[16:53:01:631][   38.319840]    00000000000000000000000000000000636d6d6b 000000640000000000000000
[16:53:01:632][   38.319840]    000000000000000081f0f100 8069a000 c01acb3c 820bfb00 820bfb7c 804193b0
[16:53:01:642][   38.319840]    804661a7 80040d14 00000000804193b0 000000000000001182057118820bfaf0
[16:53:02:283][   38.319840]    ...
[16:53:02:283][   38.319912] Call Trace:
[16:53:02:285][   38.319926] [<8002249c>] show_stack+0x64/0x7c
[16:53:02:293][   38.319946] [<803b6198>] dump_stack+0x20/0x2c
[16:53:02:294][   38.319957] [<80019534>] jz_gpio_request+0x128/0x144
[16:53:02:305][   38.319974] [<801b0e38>] gpiod_request+0xe8/0x24c
[16:53:02:306][   38.319984] [<801b1b68>] gpio_request_one+0x30/0x128
[16:53:02:318][   38.320018] [<c0215d14>] oal_sdio_interrupt_register+0x44/0xe4 [hichannel]
[16:53:02:319][   38.320052] [<c0215e20>] oal_sdio_probe+0x6c/0x4b4 [hichannel]
[16:53:02:327][   38.320075] [<801d7264>] driver_probe_device+0x84/0x234
[16:53:02:327][   38.320084] [<801d5244>] bus_for_each_drv+0x4c/0xa8
[16:53:02:328][   38.320092] [<801d71a4>] device_attach+0xb0/0xd4
[16:53:02:338][   38.320100] [<801d65fc>] bus_probe_device+0xa4/0xc8
[16:53:02:341][   38.320108] [<801d476c>] device_add+0x514/0x5c0
[16:53:02:350][   38.320131] [<c01b6b9c>] sdio_add_func+0x50/0x80 [mmc_core]
[16:53:02:351][   38.320154] [<c01b5d2c>] mmc_attach_sdio+0x2ec/0x4e0 [mmc_core]
[16:53:02:361][   38.320177] [<c01acf00>] mmc_rescan+0x3c4/0x528 [mmc_core]
[16:53:02:361][   38.320192] [<8005b528>] process_one_work+0x168/0x414
[16:53:02:372][   38.320200] [<8005bd7c>] worker_thread+0x16c/0x494
[16:53:02:374][   38.320211] [<80062c9c>] kthread+0xbc/0xc4
[16:53:02:382][   38.320222] [<8001d47c>] ret_from_kernel_thread+0x14/0x1c
[16:53:02:383][   38.320227]
[16:53:02:384][   38.322401] [WARN]:991:hcc_task_rx_gpio_thread start
[16:53:02:394][   38.322857] [WARN]:899:hcc_host_init SUCCESSFULLY
[16:53:02:394][   38.325988] [WARN]:308:netdev_register SUCCESSFULLY
[16:53:02:395][   38.326006] [WARN]:52:wlan drv insmod SUCCESSFULLY
[16:53:02:403][   84.196676] j zmmc_v1.2 j zmmc_v1.2.1: polling status(0x00000800) error, op=53, status=0x1F000942
[16:53:02:416][   84.210907] j zmmc_v1.2 j zmmc_v1.2.1: PIO mode: command response error
[16:53:02:417][   84.550675] tisp_event_push,44: event free empty error
[16:53:02:426][   84.550710] tisp_event_push,44: event free empty error
[16:53:02:427][   84.550733] tisp_event_push,44: event free empty error
[16:53:02:439][   84.551893] tisp_event_push,44: event free empty error

问题原因

• 海思提供的sample_link驱动，里面有设置君正的wifi中断引脚，需要根据实际使用情况进行配置
• 如果IO配置是正确的，可以尝试将对应IO的驱动能力调高

解决方案

• 根据实际IO 配置该引脚，默认定位为9，对应君正GPIO_A(9)
• 修改WLAN_GPIO_INT 宏定义，改为实际使用的GPIO_A(14)

注意：

如果wifi模块与T31通讯不稳定，高概率出现不能通讯问题，可以调整中间串联的电阻，目前稳定的为22欧