[问答]

如何对Android 7.1 RK3288 PMU进行调试呢

问答对人有帮助，内容完整，我也想知道答案 0 如何对Android 7.1 RK3288 PMU进行调试呢？ 0
2022-3-4 06:28:56　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × liutiefu 该类别下有 26 个回答。邀请回答 ze55me 该类别下有 20 个回答。邀请回答 tigerwang711 该类别下有 20 个回答。邀请回答杀狼000 该类别下有 19 个回答。邀请回答 zhuzb0754 该类别下有 19 个回答。邀请回答冰箱洗衣机该类别下有 18 个回答。邀请回答 YYXIAO 该类别下有 18 个回答。邀请回答 mede1001 该类别下有 17 个回答。邀请回答安德森大该类别下有 17 个回答。邀请回答 CDCNKA 该类别下有 17 个回答。邀请回答 jjll652 该类别下有 17 个回答。邀请回答河神大人该类别下有 17 个回答。邀请回答熊本熊该类别下有 16 个回答。邀请回答 YOYOOO 该类别下有 16 个回答。邀请回答麻酱该类别下有 16 个回答。邀请回答世态薄凉该类别下有 16 个回答。邀请回答 wuli北该类别下有 15 个回答。邀请回答五斤麻辣油该类别下有 15 个回答。邀请回答 Green_LJ 该类别下有 15 个回答。邀请回答江左盟该类别下有 15 个回答。邀请回答举报孙成红相关推荐 • 如何对Android 7.1 RK3288 Wifi进行调试呢 1875 • 如何对RK3288 android 7.1进行调试呢 1240 • 如何对RK3288[android 7.1]的lvds屏进行调试呢 974 • RK3288 Android 7.1如何调试USB MIDI？ 709 • 怎样去解决RK3288 Android7.1系统虚拟按键方向不对的问题呢 1185 • 请问一下怎样对RK3288[android 7.1]的mipi屏进行调试呢 1584 • 请问一下RK3288 Android 7.1是怎样调试USB MIDI的 1349 • 如何对Android7.1 RK3288 Thermal进行控制呢 1256 • 如何对RK3288 Android7.1 SD 3.0进行调试？ 825 • 怎样去修改RK3288[android 7.1]强制横屏的模式呢 1413 1个回答

答案对人有帮助，有参考价值 0 【平台信息】平台：Rockchip CPU：RK3288 PMU：RK808-B 开机流程： 1）当有接适配器时：VDC 电压升高; VSYS 上电; PMIC 上电并输出。 2）当只接电池时，按开机键：PWRON 拉高; PMIC 上电并输出。PMIC 启动，实现 EPROM 中的默认设置，各路上电完成后，发送 reset 信号，芯片上电，系统启动，PMIC 设备挂载，通过I2C 重新配置 PMIC。【流程梳理】 1、设备树配置 kernel/arch/arm/boot/dts/rk808.dtsi &rk808 { compatible = "rockchip,rk808"; regulators { #address-cells = <1>; #size-cells = <0>; rk808_dcdc1_reg: regulator@0 { reg = <0>; regulator-compatible = "rk_dcdc1"; regulator-min-microvolt = <700000>; regulator-max-microvolt = <1500000>; regulator-initial-mode = <0x2>; regulator-initial-state = <3>; regulator-state-mem { regulator-state-mode = <0x2>; regulator-state-disabled;//disabled regulator-state-uv = <900000>; }; }; ... rk808_ldo1_reg: regulator@4 { reg = <4>; regulator-compatible = "rk_ldo1"; regulator-initial-state = <3>; regulator-state-mem { regulator-state-enabled; regulator-state-uv = <3300000>; }; }; ... kernel/arch/arm/boot/dts/rk3288-n1904.dts &i2c0 { status = "okay"; rk808: rk808@1b { reg = <0x1b>; status = "okay"; }; ... } &rk808 { gpios =<&gpio0 GPIO_A4 GPIO_ACTIVE_HIGH>,<&gpio0 GPIO_A0 GPIO_ACTIVE_HIGH>; rk808,system-power-controller; regulators { rk808_dcdc1_reg: regulator@0{ regulator-name= "vdd_arm"; regulator-min-microvolt = <700000>; regulator-max-microvolt = <1500000>; regulator-always-on; regulator-boot-on; }; ... rk808_ldo1_reg: regulator@4 { regulator-name= "rk_ldo1"; regulator-min-microvolt = <1800000>; regulator-max-microvolt = <1800000>; regulator-always-on; regulator-boot-on; }; ... }; }; 参考文档： Documentation/devicetree/bindings/mfd/rk808.txt Documentation/devicetree/bindings/regulator/regulator.txt 2、驱动代码 kernel/drivers/mfd/rk808.c static struct rk808_board rk808_parse_dt(struct rk808 rk808) { struct rk808_board pdata; struct device_node regs,rk808_pmic_np; int i, count; rk808_pmic_np = of_node_get(rk808->dev->of_node); if (!rk808_pmic_np) { printk("could not find pmic sub-noden"); return NULL; } regs = of_find_node_by_name(rk808_pmic_np, "regulators"); if (!regs) return NULL; count = of_regulator_match(rk808->dev, regs, rk808_reg_matches, rk808_NUM_REGULATORS); // 匹配并查找设备树中regulator个数 of_node_put(regs); if ((count < 0) \|\| (count > rk808_NUM_REGULATORS)) return NULL; pdata = devm_kzalloc(rk808->dev, sizeof(pdata), GFP_KERNEL); if (!pdata) return NULL; for (i = 0; i < count; i++) { if (!rk808_reg_matches.init_data \|\| !rk808_reg_matches.of_node) continue; pdata->rk808_init_data = rk808_reg_matches.init_data; pdata->of_node = rk808_reg_matches.of_node; } pdata->irq = rk808->chip_irq; pdata->irq_base = -1; pdata->irq_gpio = of_get_named_gpio(rk808_pmic_np,"gpios",0); if (!gpio_is_valid(pdata->irq_gpio)) { printk("invalid gpio: %dn", pdata->irq_gpio); return NULL; } pdata->pmic_sleep_gpio = of_get_named_gpio(rk808_pmic_np,"gpios",1); if (!gpio_is_valid(pdata->pmic_sleep_gpio)) { printk("invalid gpio: %dn", pdata->pmic_sleep_gpio); } pdata->pmic_sleep = true; pdata->pm_off = of_property_read_bool(rk808_pmic_np,"rk808,system-power-controller"); return pdata; } static int rk808_i2c_probe(struct i2c_client i2c, const struct i2c_device_id id) { struct rk808 rk808; ... rk808 = devm_kzalloc(&i2c->dev,sizeof(struct rk808), GFP_KERNEL); rk808->i2c = i2c; rk808->dev = &i2c->dev; i2c_set_clientdata(i2c, rk808); ... ret = rk808_pre_init(rk808); //rk808工作状态初始化，配置一堆寄存器 if (rk808->dev->of_node) pdev = rk808_parse_dt(rk808); //设备树解析 /***************************set sleep vol & dcdc mode***************/ #ifdef CONFIG_OF rk808->pmic_sleep_gpio = pdev->pmic_sleep_gpio; if (rk808->pmic_sleep_gpio) { ret = gpio_request(rk808->pmic_sleep_gpio, "rk808_pmic_sleep"); if (ret < 0) { dev_err(rk808->dev,"Failed to request gpio %d with ret:""%dn", rk808->pmic_sleep_gpio, ret); return IRQ_NONE; } gpio_direction_output(rk808->pmic_sleep_gpio,0); ret = gpio_get_value(rk808->pmic_sleep_gpio); gpio_free(rk808->pmic_sleep_gpio); pr_info("%s: rk808_pmic_sleep=%xn", __func__, ret); } #endif if (pdev) { rk808->num_regulators = rk808_NUM_REGULATORS; rk808->rdev = kcalloc(rk808_NUM_REGULATORS,sizeof(struct regulator_dev ), GFP_KERNEL); if (!rk808->rdev) { return -ENOMEM; } /* Instantiate the regulators / for (i = 0; i < rk808_NUM_REGULATORS; i++) { reg_data = pdev->rk808_init_data; if (!reg_data) continue; config.dev = rk808->dev; config.driver_data = rk808; config.regmap = rk808->regmap; if (rk808->dev->of_node) config.of_node = pdev->of_node; if (reg_data && reg_data->constraints.name) rail_name = reg_data->constraints.name; else rail_name = regulators.name; reg_data->supply_regulator = rail_name; config.init_data =reg_data; rk808_rdev = regulator_register(®ulators,&config); if (IS_ERR(rk808_rdev)) { printk("failed to register %d regulatorn",i); goto err; } rk808->rdev = rk808_rdev; } // end for } // end if rk808->irq_gpio = pdev->irq_gpio; ret = rk808_irq_init(rk808, rk808->irq_gpio, pdev); if (ret < 0) goto err; ret = mfd_add_devices(rk808->dev, -1, rk808s, ARRAY_SIZE(rk808s), NULL, 0,NULL); g_rk808 = rk808; if (pdev->pm_off && !pm_power_off) { pm_power_off = rk808_device_shutdown; } #ifdef CONFIG_HAS_EARLYSUSPEND rk808->rk808_suspend.suspend = rk808_early_suspend, rk808->rk808_suspend.resume = rk808_late_resume, rk808->rk808_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB + 1, register_early_suspend(&rk808->rk808_suspend); #endif rk808_kobj = kobject_create_and_add("rk808", NULL); if (!rk808_kobj) return -ENOMEM; for (i = 0; i < ARRAY_SIZE(rk808_attrs); i++) { ret = sysfs_create_file(rk808_kobj, &rk808_attrs.attr); if (ret != 0) { printk("create index %d errorn", i); return ret; } } register_syscore_ops(&rk808_syscore_ops); return 0; } static const struct i2c_device_id rk808_i2c_id[] = { { "rk808", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, rk808_i2c_id); static struct i2c_driver rk808_i2c_driver = { .driver = { .name = "rk808", .owner = THIS_MODULE, #ifdef CONFIG_PM .pm = &rk808_pm_ops, #endif .of_match_table =of_match_ptr(rk808_of_match), }, .probe = rk808_i2c_probe, .remove = rk808_i2c_remove, .id_table = rk808_i2c_id, }; static int __init rk808_module_init(void) { int ret; ret = i2c_add_driver(&rk808_i2c_driver); if (ret != 0) pr_err("Failed to register I2C driver: %dn", ret); return ret; } subsys_initcall_sync(rk808_module_init); 【调试记录】 1、内核加载rk808驱动日志* rk808_i2c_probe,line=1355 rk808_pre_init,line=1224 of_get_named_gpio_flags exited with status 4 of_get_named_gpio_flags exited with status 0 vdd_arm: 712 <--> 1500 mV at 1312 mV vdd_gpu: 712 <--> 1500 mV at 900 mV rk_dcdc3: 1200 mV vccio: 1800 <--> 3300 mV at 3300 mV rk_ldo1: 1800 mV rk_ldo2: 3300 mV rk_ldo3: 1000 mV rk_ldo4: 1800 mV rk_ldo5: 3300 mV rk_ldo6: 1800 mV rk_ldo7: 1800 mV rk_battery_charger_detect_cb , battery_charger_detect 1 rk_ldo8: 1800 mV rk_ldo9: at 3300 mV rk_ldo10: at 3300 mV rk808_irq_init: rk808_pmic_irq=1 rk808_rtc_probe,line=540 rk808-rtc rk808-rtc: rtc core: registered rk808 as rtc0 rk808_rtc_probe:ok

2022-3-4 11:47:58 评论举报唐般远