Application Note:
[1] Because lack of Address pin A15 in package, following SoCs do not support the 512M*8 DDR3: RK2906-6,RK2906-8,RK3066.
[2]The DRAM Part Number usually consists of two parts divided by '-', which the first part contains memory type, density, orgainization, package, and the second part usually means data rate.
We don't care about the second part.
[3]RockChip platform can support all the chips that match the first part of Part Number which marks '√' or 'T/A', and do not nee d to care the second part. If you want your system running more effective , you may need to find out the exact data rate in DRAM datasheet and config in kernel menuconfig.
[4]Please copy the Rockchip reference design model of DRAM area PCB Layout directly without any modification and follow the PCB layout rules from Rockchip.
Contact information: fae@rock-chips.com [5]Only support for RK3128.
[6]The DRAM's VDD and VDDQ should powered by 1.5V when it used on these SoCs.
2021-05-22 08:37:16
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才用广播的形式控制系统导航栏，状态栏的显示与隐藏，同时增添系统属性def_systembar_hide来控制默认开机时系统栏的显示与否
2021-05-21 13:00:57
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方法一 不需要framework部分
1.fm放到 \hardware\rk2x
2.FmRadio 放到 packages\apps
3.hardware\libhardware\include\hardware\fm.h 放到hardware\libhardware\include\hardware\fm.h
4.build\target\product中PRODUCT_PACKAGES :=加上 FmRadio \
5./bionic/libc/kernel/common/linux/Hw_fm.h拷贝过去
6./device/rockchip/rksdk/device.mk中加入PRODUCT_PACKAGES += fm.$(TARGET_BOARD_HARDWARE)让\hardware\rk2x\fm能够编译到
7.device\rockchip\rksdk\init.rc中加上权限chmod 0664 /dev/RADIO_FM8035 chown system system /dev/RADIO_FM8035这样Rk28_fm.c (hardware\rk2x\fm\primitive)中int fm_init(sighandler_t fm_sighandler)
方法二需要在上面移植以后多加framework的内容
2021-05-21 12:02:16
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Rockchip Developer Guide USB PHY，硬件,调试,信号完整性问题
2021-05-06 21:02:57
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