1.視頻播放卡，有時(shí)播放H265視頻HDMI顯示花屏。 &route_hdmi{status = "okay"; };&lvds_in_vopb {status = "disabled"; // LVDS使用vopl, 關(guān)閉vopb };&hdmi_in_vopl {status = "disabled"; };\sdk-9.0\kernel\drivers\gpu\drm\rockchip\dw_hdmi-rockchip.c+530 if(!strcmp(mode->name, "4096x2160") || !strcmp(mode->name, "3840x2160")){ +531 printk(KERN_ERR"bad mode:%s, vrefresh:%d\n",mode->name, mode->vrefresh); +532 return MODE_BAD; +533 }關(guān)閉4k以上的分辨率 會(huì)出現(xiàn)桌面切換緩慢，hdmi閃黑屏，播放4k視頻花屏。原因是當(dāng)插上hdmi后，會(huì)自動(dòng)識(shí)別hdmi的分辨率，當(dāng)屏的分辨率與hdmi輸出的分辨率不一致時(shí)，容易發(fā)生異常。但也不是絕對(duì)的，閃黑屏可以打補(bǔ)丁解決，但4k p30 的分辨率在板子上運(yùn)行是不太流暢的，所以我想讓它默認(rèn)低分辨率輸出，有4k需求的時(shí)候再設(shè)置4k分辨率。（1）解決閃黑屏補(bǔ)丁 （u-boot） diff --git a/drivers/clk/rockchip/clk_rk3288.c b/drivers/clk/rockchip/clk_rk3288.c index ab346ef539..ede89a7445 100644 --- a/drivers/clk/rockchip/clk_rk3288.c +++ b/drivers/clk/rockchip/clk_rk3288.c @@ -169,7 +169,7 @@ enum {/* Keep divisors as low as possible to reduce jitter and power usage */static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 1); -static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 4); +static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 1, 8);static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2);（kernel） \sdk-9.0\kernel\drivers\gpu\drm\rockchip\dw_hdmi-rockchip.cstatic const struct dw_hdmi_plat_data rk3288_hdmi_drv_data = {.mode_valid = dw_hdmi_rockchip_mode_valid,.mpll_cfg = rockchip_mpll_cfg, + .mpll_cfg_420 = rockchip_mpll_cfg_420, //rockchip_rk3288w_mpll_cfg_420,.cur_ctr = rockchip_cur_ctr,.phy_config = rockchip_phy_config,.dev_type = RK3288_HDMI,.tmds_n_table = rockchip_werid_tmds_n_table, };\sdk-9.0\kernel\drivers\clk\rockchip\clk-rk3288.c- RK3066_PLL_RATE_NB(594000000, 2, 198, 4, 1), + RK3066_PLL_RATE_NB(594000000, 1, 198, 8, 1), + \sdk-9.0\kernel\arch\arm\boot\dts\rk3288-evb-android-act8846-edp.dtsivdd_10: REG10 {regulator-name = "VDD_10"; - regulator-min-microvolt = <1000000>; - regulator-max-microvolt = <1000000>;+ regulator-min-microvolt = <1100000>; + regulator-max-microvolt = <1100000>;regulator-always-on;}; (2) 設(shè)置主副屏，為副屏hdmi設(shè)置默認(rèn)分辨率\sdk-9.0\device\rockchip\rk3288\device.mk PRODUCT_PROPERTY_OVERRIDES += \vendor.hwc.device.primary=LVDS \vendor.hwc.device.extend=HDMI-A \persist.vendor.resolution.aux=1920x1080p60 （3）打開(kāi)配置\sdk-9.0\device\rockchip\rk3288\BoardConfig.mkBOARD_SHOW_HDMI_SETTING = true(4)添加服務(wù)（查看自己使用的是哪個(gè)manifest.xml）\sdk-9.0\device\rockchip\common\4g_modem\manifest.xml<hal format="hidl"><name>rockchip.hardware.outputmanager</name><transport>hwbinder</transport><version>1.0</version><interface><name>IRkOutputManager</name><instance>default</instance></interface></hal>5.發(fā)現(xiàn)hdmi顯示正常了，但4k分辨率情況下，播放高清視頻會(huì)花屏。（關(guān)閉hwc測(cè)試）\sdk-9.0\device\rockchip\rk3288\device.mk PRODUCT_PROPERTY_OVERRIDES += \vendor.hwc.compose_policy=0 \ 2.WIFI與藍(lán)牙不穩(wěn)定，有時(shí)啟動(dòng)之后無(wú)法打開(kāi)，硬件的問(wèn)題性比較大舊版本的AP6212穩(wěn)定。改版為AP6356之后經(jīng)常打不開(kāi)。待定 3.gps不支持，系統(tǒng)顯示測(cè)試應(yīng)用版本太低。$: logcat 發(fā)現(xiàn)/dev/ttyS3沒(méi)有權(quán)限\sdk-9.0\device\rockchip\common\init.rk30board.rc + chmod 777 /dev/ttyS3刪除老舊的應(yīng)用 4.SATA不支持。SATA供電腳沒(méi)有電。 &i2c0 {act8846: act8846@5a {sata-enable-gpio = <&gpio7 RK_PB7 GPIO_ACTIVE_HIGH>;//usb_hub_reset_gpio = <&gpio0 RK_PA7 GPIO_ACTIVE_LOW>;//sata_reset_gpio = <&gpio8 RK_PA7 GPIO_ACTIVE_HIGH>;....}}sdk-9.0\kernel\drivers\regulator\act8865-regulator.cstatic int act8865_pmic_probe(struct i2c_client *client,const struct i2c_device_id *i2c_id) {...... + int sata_enable; + enum of_gpio_flags flags;......if (IS_ERR(rdev)) {dev_err(dev, "failed to register %s\n", desc->name);return PTR_ERR(rdev);}}+ sata_enable = of_get_named_gpio_flags(client->dev.of_node, "sata-enable-gpio", 0, &flags); + //GPIO7_B7_D //sata enable + if(!gpio_request(sata_enable, "")){ + gpio_direction_output(sata_enable, 0); + gpio_set_value(sata_enable,1); + printk("rk3288 sata_enable gpio ok\n"); + }else{ + printk("rk3288 gpio erro\n"); + } ....... }還存在有事連接不上的問(wèn)題 參照android7.1 修改 act8865-regulator.c 驅(qū)動(dòng)后問(wèn)題已解決。 5.RTC時(shí)間可運(yùn)行斷電能保存，但不能跟網(wǎng)絡(luò)時(shí)間同步.$:make ARCH=arm menuconfig # 使用rtc芯片，關(guān)掉系統(tǒng)自帶的rtcDevice Drivers → Real Time Clock<*> Haoyu Microelectronics HYM8563 < > Rockchip RK808/RK816 RTC 以上方法尚未解決，待定。重新編譯配置后，沒(méi)有進(jìn)行更換，導(dǎo)致時(shí)間不同步CONFIG_RTC_LIB=y CONFIG_RTC_CLASS=y CONFIG_RTC_HCTOSYS=y CONFIG_RTC_HCTOSYS_DEVICE="rtc0" CONFIG_RTC_SYSTOHC=y CONFIG_RTC_SYSTOHC_DEVICE="rtc0" # CONFIG_RTC_DEBUG is not set# # RTC interfaces # CONFIG_RTC_INTF_SYSFS=y CONFIG_RTC_INTF_PROC=y CONFIG_RTC_INTF_DEV=y # CONFIG_RTC_INTF_DEV_UIE_EMUL is not set # CONFIG_RTC_DRV_TEST is not set測(cè)試發(fā)現(xiàn) rtc并未同步。logcat ： 05-10 03:44:36.580 436 1384 D SntpClient: request time failed: java.net.SocketTimeoutException: Poll timed out 05-10 03:44:36.581 436 1384 E NtpTimeHelper: requestTime failed 05-10 03:44:37.125 1305 1305 W ServiceManagement: Waited one second for android.hardware.radio@1.0::IRadio/slot1. Waiting another.. ntp 連接不上，參照android7修改地址。做一下修改 sdk-9.0\frameworks\base\core\res\res\values\config.xml + <!-- <string translatable="false" name="config_ntpServer">time.android.com</string> --> + <string translatable="false" name="config_ntpServer">2.android.pool.ntp.org</string>已解決。曾修改用蘋(píng)果的地址，發(fā)現(xiàn)gps受影響。 6.系統(tǒng)運(yùn)行比較卡界面切換響應(yīng)較慢。系統(tǒng)在啟動(dòng)或者運(yùn)行中一直報(bào)VCCIO_SD的電壓?jiǎn)栴}打印影響終端的使用如附件所示.\sdk-9.0\kernel\drivers\power\avs\rockchip-io-domain.c +162 //dev_info(supply->iod->dev, "Setting to %d done\n", uV);\sdk-9.0\kernel\drivers\regulator\core.cif (*min_uV > *max_uV) { +256 //rdev_err(rdev, "Restricting voltage, %u-%uuV\n", +266 //*min_uV, *max_uV);return -EINVAL;}系統(tǒng)運(yùn)行比較卡界面切換響應(yīng)較慢，尚未解決。更新：由于hdmi處于4kp30分辨率下，系統(tǒng)運(yùn)行比較卡，已經(jīng)切換到低分辨率。

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