tree: git://github.com/linux-chenxing/linux.git mstar_v5_14_rebase head: 651efd0e52f225e60faa8b30f9768021e2104d3c commit: 0bf5e94a6db2b88cfa3e5ac8ed9c2c237f6c03c9 [128/352] phy: msc313: usb: add vbus support config: arm-allyesconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 10.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/linux-chenxing/linux/commit/0bf5e94a6db2b88cfa3e5ac8ed... git remote add linux-chenxing git://github.com/linux-chenxing/linux.git git fetch --no-tags linux-chenxing mstar_v5_14_rebase git checkout 0bf5e94a6db2b88cfa3e5ac8ed9c2c237f6c03c9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/phy/phy-msc313-usb.c: In function 'msc313_usb_phy_probe': drivers/phy/phy-msc313-usb.c:159:3: warning: ignoring return value of 'devm_request_irq' declared with attribute 'warn_unused_result' [-Wunused-result] 159 | devm_request_irq(&pdev->dev, irq, msc313_usb_phy_irq, IRQF_SHARED, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 160 | dev_name(&pdev->dev), msc313_usb_phy); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 199 | regulator_enable(msc313_usb_phy->vbus); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/phy/phy-msc313-usb.c:15: At top level: include/linux/usb/mstar_utmi.h:80:25: warning: 'mstar_utmi_pwrctrl_pwrdwn_field' defined but not used [-Wunused-variable] 80 | static struct reg_field mstar_utmi_pwrctrl_pwrdwn_field = REG_FIELD(REG_PWRCTRL, PWRCTRL_REG_PDN, PWRCTRL_REG_PDN); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +199 drivers/phy/phy-msc313-usb.c 104 105 static int msc313_usb_phy_probe(struct platform_device *pdev) 106 { 107 struct device *dev = &pdev->dev; 108 struct phy_provider *phy_provider; 109 struct msc313_usb_phy *msc313_usb_phy; 110 int i, irq; 111 bool swap; 112 113 msc313_usb_phy = devm_kzalloc(dev, sizeof(*msc313_usb_phy), GFP_KERNEL); 114 if (!msc313_usb_phy) 115 return -ENOMEM; 116 117 msc313_usb_phy->dev = dev; 118 119 msc313_usb_phy->utmi = syscon_regmap_lookup_by_phandle(dev->of_node, "mstar,utmi"); 120 if(IS_ERR(msc313_usb_phy->utmi)){ 121 return PTR_ERR(msc313_usb_phy->utmi); 122 } 123 124 msc313_usb_phy->usbc = syscon_regmap_lookup_by_phandle(dev->of_node, "mstar,usbc"); 125 if (IS_ERR(msc313_usb_phy->usbc)) 126 return PTR_ERR(msc313_usb_phy->usbc); 127 128 irq = irq_of_parse_and_map(pdev->dev.of_node, 0); 129 if (!irq){ 130 dev_warn(&pdev->dev, "no interrupt provided"); 131 } 132 133 // hack for m5, these seem to be the reset values for i3 134 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_RSTCTRL, 135 0x228); 136 regmap_write(msc313_usb_phy->utmi, MSTAR_UTMI_REG_PLL_TEST1, 137 0x2088); 138 regmap_write(msc313_usb_phy->utmi, MSTAR_UTMI_REG_PLL_TEST0, 139 0x8051); 140 regmap_write(msc313_usb_phy->utmi, MSTAR_UTMI_REG_CONFIG, 141 0x2084); 142 143 //FIXME for some reason this doesn't update the registers. 144 // some voodoo that is enabled for the msc313 in the vendor sdk 145 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_MIUCFG0, 146 0x0); 147 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_MIUCFG1, 148 0xffff); 149 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_MIUCFG2, 150 BIT(8) | 0xff); 151 152 // clear any existing interrupts and then enable 153 // the interrupt 154 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_INTEN, 155 MSTAR_USBC_INT_MASK); 156 regmap_write(msc313_usb_phy->usbc, MSTAR_USBC_REG_INTSTS, 157 MSTAR_USBC_INT_MASK); 158 if(irq){ 159 devm_request_irq(&pdev->dev, irq, msc313_usb_phy_irq, IRQF_SHARED, 160 dev_name(&pdev->dev), msc313_usb_phy); 161 } 162 163 // power up hacks 164 regmap_write(msc313_usb_phy->utmi, REG_CLKCTRL, 0x0c2f); 165 regmap_write(msc313_usb_phy->utmi, REG_CLKCTRL, 0x040f); 166 regmap_write(msc313_usb_phy->utmi, REG_PWRCTRL, 0x7f05); 167 168 msc313_usb_phy_switch_port(msc313_usb_phy); 169 170 regmap_write(msc313_usb_phy->utmi, REG_CLKCTRL, 0x0426); 171 regmap_write(msc313_usb_phy->utmi, REG_PWRCTRL, 0x6bc3); 172 regmap_write(msc313_usb_phy->utmi, REG_PWRCTRL, 0x69c3); 173 regmap_write(msc313_usb_phy->utmi, REG_PWRCTRL, 0x0001); 174 175 regmap_write(msc313_usb_phy->utmi, REG_EYESETTING1, 0x0210); 176 regmap_write(msc313_usb_phy->utmi, REG_EYESETTING2, 0x8100); 177 178 179 msc313_usb_phy_do_calibration(msc313_usb_phy); 180 181 swap = of_property_read_bool(dev->of_node, "mstar,utmi-dxswap"); 182 183 if(swap) 184 dev_info(dev, "enabling data line swap"); 185 regmap_update_bits(msc313_usb_phy->utmi, MSTAR_UTMI_REG_CLKINV, 186 MSTAR_UTMI_REG_CLKINV_DPDNSWP, swap ? MSTAR_UTMI_REG_CLKINV_DPDNSWP : 0); 187 188 //regmap_update_bits(msc313_usb_phy->regmap, REG_PWRCTRL, PWRCTRL_UPLL_PDN, 0); 189 190 for(i = 0; i < NUM_PORTS; i++){ 191 msc313_usb_phy->ports[i] = devm_phy_create(dev, NULL, &msc313_usb_phy_ops); 192 if (IS_ERR(msc313_usb_phy->ports[i])) { 193 return PTR_ERR(msc313_usb_phy->ports[i]); 194 } 195 phy_set_drvdata(msc313_usb_phy->ports[i], msc313_usb_phy); 196 } 197 198 msc313_usb_phy->vbus = devm_regulator_get(dev, "vbus"); 200 201 dev_set_drvdata(dev, msc313_usb_phy); 202 203 phy_provider = devm_of_phy_provider_register(&pdev->dev, 204 msc313_usb_phy_xlate); 205 return PTR_ERR_OR_ZERO(phy_provider); 206 } 207 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org