tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.15 head: 423a108a01e05e84b59a4c4885c16bf3cd8c90c7 commit: 8b5383767cb4c856283824baee568f4286ecc0db [484/907] clocking-wizard: Add versal clocking wizard support config: i386-allyesconfig (https://download.01.org/0day-ci/archive/20220209/202202092332.Cshi6n5z-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e8bff9ae54a55b4dbfeb6ba55f723abbd81bf494) 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/Xilinx/linux-xlnx/commit/8b5383767cb4c856283824baee568... git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.15 git checkout 8b5383767cb4c856283824baee568f4286ecc0db # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/clk/ drivers/gpu/drm/xlnx/ drivers/net/ethernet/xilinx/ drivers/phy/xilinx/ drivers/ptp/ drivers/staging/ 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/clk/clk-xlnx-clock-wizard-v.c:164:9: error: implicit declaration of function 'FIELD_GET' [-Werror,-Wimplicit-function-declaration] regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); ^ if (vco_freq >= WZRD_VCO_MIN && vco_freq <= WZRD_VCO_MAX) { ^ drivers/clk/clk-xlnx-clock-wizard-v.c:78:24: note: expanded from macro 'WZRD_VCO_MIN' #define WZRD_VCO_MIN 2160000000 ^ drivers/clk/clk-xlnx-clock-wizard-v.c:276:12: error: implicit declaration of function 'FIELD_PREP' [-Werror,-Wimplicit-function-declaration] regval1 = FIELD_PREP(WZRD_DIVCLK_EDGE, edged); ^ drivers/clk/clk-xlnx-clock-wizard-v.c:601:63: warning: variable 'i' is uninitialized when used here [-Wuninitialized] if (of_property_read_string_index(np, "clock-output-names", i, ^ drivers/clk/clk-xlnx-clock-wizard-v.c:545:7: note: initialize the variable 'i' to silence this warning int i, ret; ^ = 0 2 warnings and 2 errors generated. vim +229 drivers/clk/clk-xlnx-clock-wizard-v.c 154 155 static unsigned long clk_wzrd_recalc_rate_all(struct clk_hw *hw, 156 unsigned long parent_rate) 157 { 158 struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); 159 u32 edged, div, div2, p5en, edge, prediv2, all, regl, regh, mult, reg; 160 161 edge = !!(readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_1)) & WZRD_CLKFBOUT_EDGE); 162 163 reg = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_2)); 165 regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); 166 167 mult = regl + regh + edge; 168 if (!mult) 169 mult = 1; 170 171 regl = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_4)) & 172 WZRD_CLKFBOUT_FRAC_EN; 173 if (regl) { 174 regl = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_3)) & 175 WZRD_CLKFBOUT_FRAC_MASK; 176 mult = mult * WZRD_FRAC_GRADIENT + regl; 177 parent_rate = DIV_ROUND_CLOSEST((parent_rate * mult), WZRD_FRAC_GRADIENT); 178 } else { 179 parent_rate = parent_rate * mult; 180 } 181 182 /* O Calculation */ 183 reg = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKOUT0_1)); 184 edged = FIELD_GET(WZRD_CLKFBOUT_EDGE, reg); 185 p5en = FIELD_GET(WZRD_P5EN, reg); 186 prediv2 = FIELD_GET(WZRD_CLKOUT0_PREDIV2, reg); 187 188 reg = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKOUT0_2)); 189 /* Low time */ 190 regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); 191 /* High time */ 192 regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); 193 all = regh + regl + edged; 194 if (!all) 195 all = 1; 196 197 if (prediv2) 198 div2 = PREDIV2_MULT * all + p5en; 199 else 200 div2 = all; 201 202 /* D calculation */ 203 edged = !!(readl(divider->base + WZRD_CLK_CFG_REG(WZRD_DESKEW_2)) & 204 WZRD_DIVCLK_EDGE); 205 reg = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_DIVCLK)); 206 /* Low time */ 207 regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); 208 /* High time */ 209 regh = FIELD_GET(WZRD_CLKFBOUT_H_MASK, reg); 210 div = regl + regh + edged; 211 if (!div) 212 div = 1; 213 214 div = div * div2; 215 return divider_recalc_rate(hw, parent_rate, div, divider->table, 216 divider->flags, divider->width); 217 } 218 219 static int clk_wzrd_get_divisors(struct clk_hw *hw, unsigned long rate, 220 unsigned long parent_rate) 221 { 222 struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); 223 u64 vco_freq, freq, diff; 224 u32 m, d, o; 225 226 for (m = WZRD_M_MIN; m <= WZRD_M_MAX; m++) { 227 for (d = WZRD_D_MIN; d <= WZRD_D_MAX; d++) { 228 vco_freq = DIV_ROUND_CLOSEST((parent_rate * m), d); 230 for (o = WZRD_O_MIN; o <= WZRD_O_MAX; o++) { 231 freq = DIV_ROUND_CLOSEST(vco_freq, o); 232 diff = abs(freq - rate); 233 234 if (diff < WZRD_MIN_ERR) { 235 divider->valuem = m; 236 divider->valued = d; 237 divider->valueo = o; 238 return 0; 239 } 240 } 241 } 242 } 243 } 244 return -EBUSY; 245 } 246 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org