[RK3288][Android6.0] 移植笔记 --- RK818配置不正确导致无法开机调试
OS: Android 6.0
Kernel: 3.10.92
现象:
在成功Download之后又遇到了无法开机的问题,kernel打印几条log就停住了.
log如下:
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x500
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 3.10.0 (kris@e) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #35 SMP PREEMPT Fri Oct 28 14:37:53 CST 2016
[ 0.000000] CPU: ARMv7 Processor [410fc0d1] revision 1 (ARMv7), cr=10c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine: Rockchip RK3288 (Flattened Device Tree), model: rockchip,rk3288
[ 0.000000] rockchip_uboot_logo_setup: mem: 0x02000000@0x7dc00000, offset:0x01000000
[ 0.000000] rockchip_uboot_mem_reserve: reserve 0x02000000@0x7dc00000 for uboot logo
[ 0.000000] rockchip_ion_reserve
[ 0.000000] ion heap(drm): base(0) size(0) align(0)
[ 0.000000] ion heap(cma): base(0) size(28000000) align(0)
[ 0.000000] ion heap(vmalloc): base(0) size(0) align(0
分析:
相对之前能正常开机的sdk板,主要的改动有eMMC/LPDDR3型号升级,PMU从ACT8846改成了RK818.
Log每次停在同一位置,所以基本上不会是LPDDR3的原因,而eMMC也不应该是此现象.
针对RK818,手上暂时没datasheet,dts配置是参考rk3288-tb.dts
凑巧测试了使用RK818的Android5.1, 可以正常开机.
后来对比替换使用了Android5.1的rk818.c驱动,系统也能起来了,但是还有问题,比如touch
模块无电压输出,直接拿掉rk818驱动后虽然系统使用u-boot中的初始化配置也能工作,但是像dvfs模块
调节频率要改变电压就不能正常工作了.
后来更新代码后,发现有个VR产品主dts也用的是rk818,替换之后能终于能正常开机!
解决办法:
使用rk3288-vr.dts而不是rk3288-tb.dts中的rk818配置, 添加如下:
/include/ "rk818.dtsi"
&rk818 {
gpios = <&gpio0 GPIO_A4 GPIO_ACTIVE_HIGH>,
<&gpio0 GPIO_A0 GPIO_ACTIVE_LOW>;
rk818,system-power-controller;
regulators {
rk818_dcdc1_reg: regulator@0{
regulator-name= "vdd_logic";
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1500000>;
regulator-initial-mode = <0x2>;
regulator-initial-state = <3>;
regulator-boot-on-volt = <1150000>;
regulator-state-mem {
regulator-state-mode = <0x2>;
regulator-state-enabled;
regulator-state-uv = <1000000>;
};
};
rk818_dcdc2_reg: regulator@1 {
regulator-name= "vdd_gpu";
regulator-min-microvolt = <700000>;
regulator-max-microvolt = <1500000>;
regulator-initial-mode = <0x2>;
regulator-initial-state = <3>;
regulator-boot-on-volt = <1150000>;
regulator-state-mem {
regulator-state-mode = <0x2>;
regulator-state-disabled;
regulator-state-uv = <900000>;
};
};
rk818_dcdc3_reg: regulator@2 {
regulator-name= "rk818_dcdc3";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
regulator-initial-mode = <0x2>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-mode = <0x2>;
regulator-state-enabled;
regulator-state-uv = <1200000>;
};
};
rk818_dcdc4_reg: regulator@3 {
regulator-name= "vccio";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
regulator-initial-mode = <0x2>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-mode = <0x2>;
regulator-state-enabled;
regulator-state-uv = <3000000>;
};
};
rk818_ldo1_reg: regulator@4 {
regulator-name= "rk818_ldo1";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <3300000>;
};
};
rk818_ldo2_reg: regulator@5 {
regulator-name= "rk818_ldo2";
regulator-always-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <3300000>;
};
};
rk818_ldo3_reg: regulator@6 {
regulator-name= "rk818_ldo3";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <1000000>;
};
};
rk818_ldo4_reg:regulator@7 {
regulator-name= "rk818_ldo4";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-disabled;
regulator-state-uv = <1800000>;
};
};
rk818_ldo5_reg: regulator@8 {
regulator-name= "rk818_ldo5";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-disabled;
regulator-state-uv = <3300000>;
};
};
rk818_ldo6_reg: regulator@9 {
regulator-name= "rk818_ldo6";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-disabled;
regulator-state-uv = <1000000>;
};
};
rk818_ldo7_reg: regulator@10 {
regulator-name= "rk818_ldo7";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <1800000>;
};
};
rk818_ldo8_reg: regulator@11 {
regulator-name= "rk818_ldo8";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <3300000>;
};
};
rk818_ldo9_reg: regulator@12 {
regulator-name= "vcc_sd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-initial-state = <3>;
regulator-state-mem {
regulator-state-enabled;
regulator-state-uv = <3300000>;
};
};
rk818_ldo10_reg: regulator@13 {
regulator-name= "rk818_ldo10";
regulator-state-mem {
regulator-state-disabled;
};
};
};
battery {
ocv_table =
<3400 3599 3671 3701 3728 3746 3762 3772 3781 3792 3816 3836
3866 3910 3942 3971 4002 4050 4088 4132 4183 >;
design_capacity = <4000>;
design_qmax = <4100>;
bat_res = <100>;
max_input_current = <2000>;
max_chrg_current = <1800>;
max_chrg_voltage = <4200>;
sleep_enter_current = <300>;
sleep_exit_current = <300>;
power_off_thresd = <3400>;
zero_algorithm_vol = <3850>;
fb_temperature = <115>;
max_soc_offset = <60>;
monitor_sec = <5>;
virtual_power = <0>;
power_dc2otg = <0>;
dc_det_adc = <0>;
};
};
此问题花了我不少时间,希望对遇到同样问题的朋友有帮助.