Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751944AbdHDJvt (ORCPT ); Fri, 4 Aug 2017 05:51:49 -0400 Received: from mail-yw0-f194.google.com ([209.85.161.194]:33524 "EHLO mail-yw0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751291AbdHDJvq (ORCPT ); Fri, 4 Aug 2017 05:51:46 -0400 MIME-Version: 1.0 In-Reply-To: References: <1501756357-10511-1-git-send-email-jacob-chen@iotwrt.com> From: Jacob Chen Date: Fri, 4 Aug 2017 17:51:44 +0800 Message-ID: Subject: Re: [PATCH 1/2] arm64: dts: rockchip: Add support for rk3399 sapphire SOM To: "open list:ARM/Rockchip SoC..." Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Heiko Stuebner , Kever Yang , long jacob , Elaine Zhang , Jacob Chen Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 25394 Lines: 689 2017-08-03 18:34 GMT+08:00 Jacob Chen : > Hi all, > > 2017-08-03 18:32 GMT+08:00 Jacob Chen : >> Add support for the rk3399 sapphire SOM board. >> This board works in a combination with the excavator main board. >> >> You can get more info from below link: >> http://opensource.rock-chips.com/wiki_Excavator_sapphire_board >> >> Signed-off-by: Jacob Chen >> --- >> arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi | 646 ++++++++++++++++++++++ >> 1 file changed, 646 insertions(+) >> create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >> >> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >> new file mode 100644 >> index 0000000..4c6b369 >> --- /dev/null >> +++ b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >> @@ -0,0 +1,646 @@ >> +/* >> + * Copyright (c) 2017 Fuzhou Rockchip Electronics Co., Ltd. >> + * >> + * This file is dual-licensed: you can use it either under the terms >> + * of the GPL or the X11 license, at your option. Note that this dual >> + * licensing only applies to this file, and not this project as a >> + * whole. >> + * >> + * a) This file is free software; you can redistribute it and/or >> + * modify it under the terms of the GNU General Public License as >> + * published by the Free Software Foundation; either version 2 of the >> + * License, or (at your option) any later version. >> + * >> + * This file is distributed in the hope that it will be useful, >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the >> + * GNU General Public License for more details. >> + * >> + * Or, alternatively, >> + * >> + * b) Permission is hereby granted, free of charge, to any person >> + * obtaining a copy of this software and associated documentation >> + * files (the "Software"), to deal in the Software without >> + * restriction, including without limitation the rights to use, >> + * copy, modify, merge, publish, distribute, sublicense, and/or >> + * sell copies of the Software, and to permit persons to whom the >> + * Software is furnished to do so, subject to the following >> + * conditions: >> + * >> + * The above copyright notice and this permission notice shall be >> + * included in all copies or substantial portions of the Software. >> + * >> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, >> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES >> + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND >> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT >> + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, >> + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING >> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR >> + * OTHER DEALINGS IN THE SOFTWARE. >> + */ >> + >> +#include "dt-bindings/pwm/pwm.h" >> +#include "rk3399.dtsi" >> +#include "rk3399-opp.dtsi" >> + >> +/ { >> + compatible = "rockchip,rk3399-sapphire", "rockchip,rk3399"; >> + >> + backlight: backlight { >> + compatible = "pwm-backlight"; >> + pwms = <&pwm0 0 25000 0>; >> + brightness-levels = < >> + 0 1 2 3 4 5 6 7 >> + 8 9 10 11 12 13 14 15 >> + 16 17 18 19 20 21 22 23 >> + 24 25 26 27 28 29 30 31 >> + 32 33 34 35 36 37 38 39 >> + 40 41 42 43 44 45 46 47 >> + 48 49 50 51 52 53 54 55 >> + 56 57 58 59 60 61 62 63 >> + 64 65 66 67 68 69 70 71 >> + 72 73 74 75 76 77 78 79 >> + 80 81 82 83 84 85 86 87 >> + 88 89 90 91 92 93 94 95 >> + 96 97 98 99 100 101 102 103 >> + 104 105 106 107 108 109 110 111 >> + 112 113 114 115 116 117 118 119 >> + 120 121 122 123 124 125 126 127 >> + 128 129 130 131 132 133 134 135 >> + 136 137 138 139 140 141 142 143 >> + 144 145 146 147 148 149 150 151 >> + 152 153 154 155 156 157 158 159 >> + 160 161 162 163 164 165 166 167 >> + 168 169 170 171 172 173 174 175 >> + 176 177 178 179 180 181 182 183 >> + 184 185 186 187 188 189 190 191 >> + 192 193 194 195 196 197 198 199 >> + 200 201 202 203 204 205 206 207 >> + 208 209 210 211 212 213 214 215 >> + 216 217 218 219 220 221 222 223 >> + 224 225 226 227 228 229 230 231 >> + 232 233 234 235 236 237 238 239 >> + 240 241 242 243 244 245 246 247 >> + 248 249 250 251 252 253 254 255>; >> + default-brightness-level = <200>; >> + }; >> + >> + clkin_gmac: external-gmac-clock { >> + compatible = "fixed-clock"; >> + clock-frequency = <125000000>; >> + clock-output-names = "clkin_gmac"; >> + #clock-cells = <0>; >> + }; >> + >> + dc_12v: dc-12v { >> + compatible = "regulator-fixed"; >> + regulator-name = "dc_12v"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <12000000>; >> + regulator-max-microvolt = <12000000>; >> + }; >> + >> + /* switched by pmic_sleep */ >> + vcc1v8_s3: vcca1v8_s3: vcc1v8-s3 { >> + compatible = "regulator-fixed"; >> + regulator-name = "vcc1v8_s3"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <1800000>; >> + vin-supply = <&vcc_1v8>; >> + }; >> + >> + vcc3v3_sys: vcc3v3-sys { >> + compatible = "regulator-fixed"; >> + regulator-name = "vcc3v3_sys"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <3300000>; >> + regulator-max-microvolt = <3300000>; >> + vin-supply = <&vcc_sys>; >> + }; >> + >> + vcc_sys: vcc-sys { >> + compatible = "regulator-fixed"; >> + regulator-name = "vcc_sys"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <5000000>; >> + regulator-max-microvolt = <5000000>; >> + vin-supply = <&dc_12v>; >> + }; >> + >> + vcc5v0_host: vcc5v0-host-regulator { >> + compatible = "regulator-fixed"; >> + enable-active-high; >> + gpio = <&gpio1 RK_PD1 GPIO_ACTIVE_HIGH>; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&vcc5v0_host_en>; >> + regulator-name = "vcc5v0_host"; >> + regulator-always-on; >> + vin-supply = <&vcc_sys>; >> + }; >> +}; >> + >> +&cpu_l0 { >> + cpu-supply = <&vdd_cpu_l>; >> +}; >> + >> +&cpu_l1 { >> + cpu-supply = <&vdd_cpu_l>; >> +}; >> + >> +&cpu_l2 { >> + cpu-supply = <&vdd_cpu_l>; >> +}; >> + >> +&cpu_l3 { >> + cpu-supply = <&vdd_cpu_l>; >> +}; >> + >> +&cpu_b0 { >> + cpu-supply = <&vdd_cpu_b>; >> +}; >> + >> +&cpu_b1 { >> + cpu-supply = <&vdd_cpu_b>; >> +}; >> + >> +&emmc_phy { >> + status = "okay"; >> +}; >> + >> +&gmac { >> + assigned-clocks = <&cru SCLK_RMII_SRC>; >> + assigned-clock-parents = <&clkin_gmac>; >> + clock_in_out = "input"; >> + phy-supply = <&vcc_lan>; >> + phy-mode = "rgmii"; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&rgmii_pins>; >> + snps,reset-gpio = <&gpio3 RK_PB7 GPIO_ACTIVE_LOW>; >> + snps,reset-active-low; >> + snps,reset-delays-us = <0 10000 50000>; >> + tx_delay = <0x28>; >> + rx_delay = <0x11>; >> + status = "okay"; >> +}; >> + >> +&gpu { >> + mali-supply = <&vdd_gpu>; >> + status = "okay"; >> +}; >> + >> +&hdmi { >> + ddc-i2c-bus = <&i2c3>; >> + status = "okay"; >> +}; >> + >> +&i2c0 { >> + clock-frequency = <400000>; >> + i2c-scl-rising-time-ns = <168>; >> + i2c-scl-falling-time-ns = <4>; >> + status = "okay"; >> + >> + rk808: pmic@1b { >> + compatible = "rockchip,rk808"; >> + reg = <0x1b>; >> + interrupt-parent = <&gpio1>; >> + interrupts = <21 IRQ_TYPE_LEVEL_LOW>; >> + #clock-cells = <1>; >> + clock-output-names = "xin32k", "rk808-clkout2"; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&pmic_int_l &pmic_dvs2>; >> + rockchip,system-power-controller; >> + wakeup-source; >> + >> + vcc1-supply = <&vcc_sys>; >> + vcc2-supply = <&vcc_sys>; >> + vcc3-supply = <&vcc_sys>; >> + vcc4-supply = <&vcc_sys>; >> + vcc6-supply = <&vcc_sys>; >> + vcc7-supply = <&vcc_sys>; >> + vcc8-supply = <&vcc3v3_sys>; >> + vcc9-supply = <&vcc_sys>; >> + vcc10-supply = <&vcc_sys>; >> + vcc11-supply = <&vcc_sys>; >> + vcc12-supply = <&vcc3v3_sys>; >> + vddio-supply = <&vcc1v8_pmu>; >> + >> + regulators { >> + vdd_center: DCDC_REG1 { >> + regulator-name = "vdd_center"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <750000>; >> + regulator-max-microvolt = <1350000>; >> + regulator-ramp-delay = <6001>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vdd_cpu_l: DCDC_REG2 { >> + regulator-name = "vdd_cpu_l"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <750000>; >> + regulator-max-microvolt = <1350000>; >> + regulator-ramp-delay = <6001>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc_ddr: DCDC_REG3 { >> + regulator-name = "vcc_ddr"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + }; >> + }; >> + >> + vcc_1v8: DCDC_REG4 { >> + regulator-name = "vcc_1v8"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <1800000>; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + regulator-suspend-microvolt = <1800000>; >> + }; >> + }; >> + >> + vcc1v8_dvp: LDO_REG1 { >> + regulator-name = "vcc1v8_dvp"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <1800000>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc3v0_tp: LDO_REG2 { >> + regulator-name = "vcc3v0_tp"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <3000000>; >> + regulator-max-microvolt = <3000000>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc1v8_pmu: LDO_REG3 { >> + regulator-name = "vcc1v8_pmu"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <1800000>; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + regulator-suspend-microvolt = <1800000>; >> + }; >> + }; >> + >> + vcc_sdio: LDO_REG4 { >> + regulator-name = "vcc_sdio"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <3300000>; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + regulator-suspend-microvolt = <3300000>; >> + }; >> + }; >> + >> + vcca3v0_codec: LDO_REG5 { >> + regulator-name = "vcca3v0_codec"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <3000000>; >> + regulator-max-microvolt = <3000000>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc_1v5: LDO_REG6 { >> + regulator-name = "vcc_1v5"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1500000>; >> + regulator-max-microvolt = <1500000>; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + regulator-suspend-microvolt = <1500000>; >> + }; >> + }; >> + >> + vcca1v8_codec: LDO_REG7 { >> + regulator-name = "vcca1v8_codec"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <1800000>; >> + regulator-max-microvolt = <1800000>; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc_3v0: LDO_REG8 { >> + regulator-name = "vcc_3v0"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <3000000>; >> + regulator-max-microvolt = <3000000>; >> + regulator-state-mem { >> + regulator-on-in-suspend; >> + regulator-suspend-microvolt = <3000000>; >> + }; >> + }; >> + >> + vcc3v3_s3: vcc_lan: SWITCH_REG1 { >> + regulator-name = "vcc3v3_s3"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vcc3v3_s0: SWITCH_REG2 { >> + regulator-name = "vcc3v3_s0"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + }; >> + }; >> + >> + vdd_cpu_b: regulator@40 { >> + compatible = "silergy,syr827"; >> + reg = <0x40>; >> + fcs,suspend-voltage-selector = <1>; >> + regulator-name = "vdd_cpu_b"; >> + regulator-min-microvolt = <712500>; >> + regulator-max-microvolt = <1500000>; >> + regulator-ramp-delay = <1000>; >> + regulator-always-on; >> + regulator-boot-on; >> + vin-supply = <&vcc_sys>; >> + >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vdd_gpu: regulator@41 { >> + compatible = "silergy,syr828"; >> + reg = <0x41>; >> + fcs,suspend-voltage-selector = <1>; >> + regulator-name = "vdd_gpu"; >> + regulator-min-microvolt = <712500>; >> + regulator-max-microvolt = <1500000>; >> + regulator-ramp-delay = <1000>; >> + regulator-always-on; >> + regulator-boot-on; >> + vin-supply = <&vcc_sys>; >> + >> + regulator-state-mem { >> + regulator-off-in-suspend; >> + }; >> + }; >> + >> + vdd_log: vdd-log { >> + compatible = "pwm-regulator"; >> + pwms = <&pwm2 0 25000 1>; >> + regulator-name = "vdd_log"; >> + regulator-always-on; >> + regulator-boot-on; >> + regulator-min-microvolt = <800000>; >> + regulator-max-microvolt = <1400000>; >> + vin-supply = <&vcc_sys>; >> + }; >> +}; >> + >> +&i2c3 { >> + i2c-scl-rising-time-ns = <450>; >> + i2c-scl-falling-time-ns = <15>; >> + status = "okay"; >> +}; >> + >> +&io_domains { >> + status = "okay"; >> + >> + bt656-supply = <&vcc_3v0>; >> + audio-supply = <&vcca1v8_codec>; >> + sdmmc-supply = <&vcc_sdio>; >> + gpio1830-supply = <&vcc_3v0>; >> +}; >> + >> +&pcie_phy { >> + status = "okay"; >> +}; >> + >> +&pcie0 { >> + assigned-clocks = <&cru SCLK_PCIEPHY_REF>; >> + assigned-clock-parents = <&cru SCLK_PCIEPHY_REF100M>; >> + assigned-clock-rates = <100000000>; >> + ep-gpios = <&gpio3 RK_PB5 GPIO_ACTIVE_HIGH>; >> + num-lanes = <4>; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&pcie_clkreqn>; >> + status = "okay"; >> +}; >> + >> +&pmu_io_domains { >> + pmu1830-supply = <&vcc_3v0>; >> + status = "okay"; >> +}; >> + >> +&pinctrl { >> + pmic { >> + pmic_int_l: pmic-int-l { >> + rockchip,pins = >> + <1 RK_PC5 RK_FUNC_GPIO &pcfg_pull_up>; >> + }; >> + >> + pmic_dvs2: pmic-dvs2 { >> + rockchip,pins = >> + <1 RK_PC2 RK_FUNC_GPIO &pcfg_pull_down>; >> + }; >> + >> + vsel1_gpio: vsel1-gpio { >> + rockchip,pins = <1 RK_PC1 RK_FUNC_GPIO &pcfg_pull_down>; >> + }; >> + >> + vsel2_gpio: vsel2-gpio { >> + rockchip,pins = <1 RK_PB6 RK_FUNC_GPIO &pcfg_pull_down>; >> + }; >> + }; >> + >> + usb2 { >> + vcc5v0_host_en: vcc5v0-host-en { >> + rockchip,pins = >> + <4 RK_PD1 RK_FUNC_GPIO &pcfg_pull_none>; >> + }; >> + }; >> +}; >> + >> +&pwm0 { >> + status = "okay"; >> +}; >> + >> +&pwm2 { >> + status = "okay"; >> +}; >> + >> +&saradc { >> + vref-supply = <&vcca1v8_s3>; >> + status = "okay"; >> +}; >> + >> +&sdhci { >> + bus-width = <8>; >> + keep-power-in-suspend; >> + mmc-hs400-1_8v; >> + mmc-hs400-enhanced-strobe; >> + non-removable; >> + status = "okay"; >> +}; >> + >> +&sdio0 { >> + clock-frequency = <50000000>; >> + clock-freq-min-max = <200000 50000000>; >> + bus-width = <4>; >> + disable-wp; >> + cap-sd-highspeed; >> + cap-sdio-irq; >> + keep-power-in-suspend; >> + mmc-pwrseq = <&sdio_pwrseq>; >> + non-removable; >> + num-slots = <1>; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk>; >> + sd-uhs-sdr104; >> + status = "okay"; >> +}; >> + >> +&sdmmc { >> + clock-frequency = <150000000>; >> + clock-freq-min-max = <100000 150000000>; >> + bus-width = <4>; >> + cap-mmc-highspeed; >> + cap-sd-highspeed; >> + disable-wp; >> + num-slots = <1>; >> + pinctrl-names = "default"; >> + pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>; >> + vqmmc-supply = <&vcc_sdio>; >> + status = "okay"; >> +}; >> + >> +&tsadc { >> + /* tshut mode 0:CRU 1:GPIO */ >> + rockchip,hw-tshut-mode = <1>; >> + /* tshut polarity 0:LOW 1:HIGH */ >> + rockchip,hw-tshut-polarity = <1>; >> + status = "okay"; >> +}; >> + >> +&u2phy0 { >> + status = "okay"; >> + >> + u2phy0_otg: otg-port { >> + status = "okay"; >> + }; >> + >> + u2phy0_host: host-port { >> + phy-supply = <&vcc5v0_host>; >> + status = "okay"; >> + }; >> +}; >> + >> +&u2phy1 { >> + status = "okay"; >> + >> + u2phy1_otg: otg-port { >> + status = "okay"; >> + }; >> + >> + u2phy1_host: host-port { >> + phy-supply = <&vcc5v0_host>; >> + status = "okay"; >> + }; >> +}; >> + >> +&uart0 { >> + pinctrl-names = "default"; >> + pinctrl-0 = <&uart0_xfer &uart0_cts>; >> + status = "okay"; >> +}; >> + >> +&uart2 { >> + status = "okay"; >> +}; >> + >> +&usb_host0_ehci { >> + status = "okay"; >> +}; >> + >> +&usb_host0_ohci { >> + status = "okay"; >> +}; >> + >> +&usb_host1_ehci { >> + status = "okay"; >> +}; >> + >> +&usb_host1_ohci { >> + status = "okay"; >> +}; >> + >> +&usbdrd3_0 { >> + status = "okay"; >> +}; >> + >> +&usbdrd_dwc3_0 { >> + status = "okay"; >> + dr_mode = "otg"; >> +}; >> + >> +&usbdrd3_1 { >> + status = "okay"; >> +}; >> + >> +&usbdrd_dwc3_1 { >> + status = "okay"; >> + dr_mode = "host"; >> +}; >> + >> +&vopb { >> + status = "okay"; >> +}; >> + >> +&vopb_mmu { >> + status = "okay"; >> +}; >> + >> +&vopl { >> + status = "okay"; >> +}; >> + >> +&vopl_mmu { >> + status = "okay"; >> +}; >> -- >> 2.7.4 >> > > http://imgur.com/a/6K0t8 > > I can have display in this board, > but need some assigned clock-rate > > assigned-clocks = <&cru ACLK_VOP0>, <&cru HCLK_VOP0>; > assigned-clock-rates = <400000000>, <200000000>; > > assigned-clocks = <&cru ACLK_VOP1>, <&cru HCLK_VOP1>; > assigned-clock-rates = <400000000>, <200000000>; > > > Is it a issue? Are there any pacthes in 4.14 will fix it? Interesting.... I found this board could be bought in taobao.. https://item.taobao.com/item.htm?spm=a1z09.2.0.0.1f30a53flpk7IA&id=554454257549&_u=31t0eea9a1c