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pinctrl设置引脚复用失败#xff0c;没有调用到controller中的set_groups_function函数。
问题定位
pinctrl如何注册dm节点如何进行设备树中各个设备节点下的复用配置为什么没调用到控制器实现的set_groups_function函数
gpio0 {status okay;p…问题描述
pinctrl设置引脚复用失败没有调用到controller中的set_groups_function函数。
问题定位
pinctrl如何注册dm节点如何进行设备树中各个设备节点下的复用配置为什么没调用到控制器实现的set_groups_function函数
gpio0 {status okay;pinctrl-names default;pinctrl-0 gpioa15_pinctrl;
};pinctrl {gpioa15 {gpioa15_pinctrl: gpioa15_grp {ts,pins PB7;mux,val 5;function gpioa15;groups gpioa15_grp;};};
};pinctrl如何注册dm节点
调用过程
[uboot/drivers/core/device.c]
int device_probe(struct udevice *dev)/* Process pinctrl for everything except the root device, and* continue regardless of the result of pinctrl. Dont process pinctrl* settings for pinctrl devices since the device may not yet be* probed. * */pinctrl_select_state(dev, default);pinctrl_select_state_simple(dev);/** Try full-implemented pinctrl first.* If it fails or is not implemented, try simple one.*/if (pinctrl_select_state_full(dev, statename))return pinctrl_select_state_simple(dev);UCLASS_DRIVER(pinctrl) {.id UCLASS_PINCTRL,.post_bind pinctrl_post_bind,.flags DM_UC_FLAG_SEQ_ALIAS,.name pinctrl,ret uclass_pre_probe_device(dev);ret uclass_post_probe_device(dev);uc_drv-post_probepinctrl_post_bindreturn pinconfig_post_bind(dev);pinctrl_select_state(dev, default);pinctrl_select_state_full(dev, statename)ret pinctrl_config_one(config);ops pinctrl_get_ops(pctldev);/* this ops was set by controller */return ops-set_state(pctldev, config);};上面的调用过程是通过加log找出来的log如下
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
initr_nand bypass
MMC: __file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
dev 0x00000000bf741ec0, size 0xa0, name mmcf0512000, ofnode 10c4, mmcf0512000
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
dev 0x00000000bf742260, size 0xa0, name mmcf0513000, ofnode 1158, mmcf0513000
__file:drivers/core/device.c __func:device_probe __line:431 看着就是在pinctrl_select_state_full 函数里出了问题 每次进入pinctrl_select_state_full 函数只能打印到68行下面的打印出不来没有调到pinctrl_config_one所以设备树里注册的gpioa15_pinctrl没有被配置。
/*** pinctrl_select_state_full() - full implementation of pinctrl_select_state** dev: peripheral device* statename: state name, like default* return: 0 on success, or negative error code on failure*/
static int pinctrl_select_state_full(struct udevice *dev, const char *statename)
{char propname[32]; /* long enough */const fdt32_t *list;uint32_t phandle;struct udevice *config;int state, size, i, ret;printf(__file:%s __func:%s __line:%d\n, __FILE__, __func__, __LINE__);state dev_read_stringlist_search(dev, pinctrl-names, statename);if (state 0) {char *end;/** If statename is not found in pinctrl-names,* assume statename is just the integer state ID.*/state simple_strtoul(statename, end, 10);if (*end)return -EINVAL;}
printf(__file:%s __func:%s __line:%d\n, __FILE__, __func__, __LINE__);snprintf(propname, sizeof(propname), pinctrl-%d, state);list dev_read_prop(dev, propname, size);if (!list)return -EINVAL;size / sizeof(*list);printf(__file:%s __func:%s __line:%d size:%d\n, __FILE__, __func__, __LINE__, size);for (i 0; i size; i) {phandle fdt32_to_cpu(*list);ret uclass_get_device_by_phandle_id(UCLASS_PINCONFIG, phandle,config);if (ret) {dev_warn(dev, %s: uclass_get_device_by_phandle_id: err%d\n,__func__, ret);continue;}
printf(__file:%s __func:%s __line:%d\n, __FILE__, __func__, __LINE__);ret pinctrl_config_one(config);if (ret) {dev_warn(dev, %s: pinctrl_config_one: err%d\n,__func__, ret);continue;}}return 0;
}初步怀疑是69行这里state dev_read_stringlist_search(dev, pinctrl-names, statename); 返回的state是个非法值。打印出来看看 果然都是非法值-61
pinctrl_probe
reg_base:f0389000
npins : 78
nfuncs : 1
ngroups: 1 func:gpioa15, ngroups 1
grp_index 0
group[0] name gpioa15_grp
mux_val: 0x5
npins: 1
15
ts_pinctrl_parse_dt done
ts pinctrl initialized
__file:drivers/core/device.c __func:device_probe __line:523
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70 state:-61
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70 state:-61
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
initr_nand bypass
MMC: __file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70 state:-61
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
dev 0x00000000bf741ec0, size 0xa0, name mmcf0512000, ofnode 10c4, mmcf0512000
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:68
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70 state:-61
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482 uboot的异常宏号码列表 uboot/include/linux/errno.h
#define EBFONT 59 /* Bad font file format */
#define ENOSTR 60 /* Device not a stream */
#define ENODATA 61 /* No data available */dev_read_stringlist_search的定义
static inline int dev_read_stringlist_search(const struct udevice *dev,const char *propname,const char *string)
{return ofnode_stringlist_search(dev_ofnode(dev), propname, string);
}int ofnode_stringlist_search(ofnode node, const char *property,const char *string)
{if (ofnode_is_np(node)) {//maybe bug herereturn of_property_match_string(ofnode_to_np(node),property, string);} else {int ret;ret fdt_stringlist_search(gd-fdt_blob,ofnode_to_offset(node), property,string);if (ret -FDT_ERR_NOTFOUND)//maybe bug herereturn -ENODATA;else if (ret 0)return -EINVAL;return ret;}
}上面注释中有两个位置可能返回了ENODATA此处已经开始怀疑是不是设备树描述地有问题了。回头看了一下dts中pinctrl-names属性是存在的。。。 但是dts虽然有编译出dtb到后不一定还是存在的这里通过请教前辈有哪些fdt的调试手段前辈推荐了fdt命令在uboot中可以用于显示设备树信息 如何使用
通过printenv找到fdtcontroladdr属性的值此为fdt所在地址运行fdt fdtcontroladdr运行fdt list 找到gpio和pinctrl节点所在 可以看到gpio及其pinctrl配置实际已经配置进去了。 从这里开始我就觉得不对劲了只能开始请神了所以我找了原先的pinctrl mantainer。原先的mantainer说 uboot中GPIO节点的pinctrl配置是必须在gpio命令运行完毕之后才会进行pinctrl的配置的
恍然大悟之前没有注意过这个特性我运行了gpio set 15 1后 gpio set 15 1
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
dev-name:gpiof0390000
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70
fdt_stringlist_search len:8
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:72 state:0 name:default
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:83
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:90 size:1
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
dev-name:gpioa15
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70
const fdt_stringlist_search FDT_ERR_NOTFOUND
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:72 state:-61 name:default
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
dev-name:gpioa15_grp
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70
const fdt_stringlist_search FDT_ERR_NOTFOUND
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:72 state:-61 name:default
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:100
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:32
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:34
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:36
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:38
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:44
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:36
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:38
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:44
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_config_one __line:50
__func:pinctrl_generic_set_state line:340
__func:pinctrl_generic_set_state_subnode line:301
get group[0] gpioa15_grp
__func:pinctrl_generic_set_state_subnode line:326
__func:pinctrl_generic_set_state_one line:250
__func:pinctrl_generic_set_state_one line:261
__func:pinmux_enable_setting line:119
set_mux, function:0, group:0
group name:gpioa15_grp, func name:gpioa15 mux_val:5
pin15, wr 0x00000000f038912c, val 0x50000000
__file:drivers/core/device.c __func:device_probe __line:482
failed to get gpio clock
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:460
__file:drivers/core/device.c __func:device_probe __line:476
__file:drivers/core/device.c __func:device_probe __line:479
dev-name:pa
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:70
const fdt_stringlist_search FDT_ERR_NOTFOUND
__file:drivers/pinctrl/pinctrl-uclass.c __func:pinctrl_select_state_full __line:72 state:-61 name:default
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:482
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
gpio: pin 15 (gpio 15) value is 1
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431
__file:drivers/core/device.c __func:device_probe __line:431 可以看到name:default已经找到了再使用devmem查看pinctrl对应的B组寄存器值 md 0xf038912c
f038912c: 50000000 00000000 00000000 00000000 ...P............
f038913c: 00000000 00000000 00000000 00000000 ................
f038914c: 00000000 00000000 00000000 00000000 ................
f038915c: 00000000 00000000 00000000 00000000 ................
f038916c: 00000000 00000000 00000000 00000000 ................
f038917c: 00000000 00000000 00000000 00000000 ................
f038918c: 00000000 00000000 00000000 00000000 ................
f038919c: 00000000 00000000 00000000 00000000 ................
f03891ac: 00000000 00000000 00000000 00000000 ................
f03891bc: 00000000 00000000 00000000 00000000 ................
f03891cc: 00000000 00000000 00000000 00000000 ................
f03891dc: 00000000 00000000 00000000 00000000 ................
f03891ec: 00000000 00000000 00000000 00000000 ................
f03891fc: 00000000 000000ff 00000000 00000000 ................
f038920c: 00000000 000000ff 00000000 00000000 ................
f038921c: 00000000 00000000 00000000 00000000 ................ func5配置成功。
TODOgpio中如何调用到pinctrl配置接口
推荐链接 https://blog.csdn.net/ZHONGCAI0901/article/details/117986327
