Hi Shubhrajyoti, FYI, the error/warning still remains. tree: https://github.com/Xilinx/linux-xlnx master head: 6057b70444aa27680466a4b33d68b18f415d495b commit: c1e2db426dc728a5417024c9bd75c39ec81331d9 [129/395] clocking-wizard: Support higher frequency accuracy config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220121/202201211116.bvPrCZMH-lk...) compiler: powerpc-linux-gcc (GCC) 11.2.0 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/Xilinx/linux-xlnx/commit/c1e2db426dc728a5417024c9bd75c... git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xilinx-xlnx master git checkout c1e2db426dc728a5417024c9bd75c39ec81331d9 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/clk/ drivers/media/platform/xilinx/ drivers/phy/xilinx/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/clk/clk-xlnx-clock-wizard-v.c: In function 'clk_wzrd_recalc_rate_all': 164 | regl = FIELD_GET(WZRD_CLKFBOUT_L_MASK, reg); | ^~~~~~~~~ | FOLL_GET drivers/clk/clk-xlnx-clock-wizard-v.c: In function 'clk_wzrd_get_divisors': drivers/clk/clk-xlnx-clock-wizard-v.c:229:25: warning: this decimal constant is unsigned only in ISO C90 229 | if (vco_freq >= WZRD_VCO_MIN && vco_freq <= WZRD_VCO_MAX) { | ^~ drivers/clk/clk-xlnx-clock-wizard-v.c: In function 'clk_wzrd_dynamic_all_nolock': 276 | regval1 = FIELD_PREP(WZRD_DIVCLK_EDGE, edged); | ^~~~~~~~~~ drivers/clk/clk-xlnx-clock-wizard-v.c: In function 'clk_wzrd_recalc_rate': drivers/clk/clk-xlnx-clock-wizard-v.c:342:42: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 342 | (void __iomem *)((u64)divider->base + divider->offset); | ^ drivers/clk/clk-xlnx-clock-wizard-v.c:342:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 342 | (void __iomem *)((u64)divider->base + divider->offset); | ^ drivers/clk/clk-xlnx-clock-wizard-v.c: In function 'clk_wzrd_dynamic_reconfig': drivers/clk/clk-xlnx-clock-wizard-v.c:375:42: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 375 | (void __iomem *)((u64)divider->base + divider->offset); | ^ drivers/clk/clk-xlnx-clock-wizard-v.c:375:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 375 | (void __iomem *)((u64)divider->base + divider->offset); | ^ cc1: some warnings being treated as errors vim +164 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); 229 if (vco_freq >= WZRD_VCO_MIN && vco_freq <= WZRD_VCO_MAX) { 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 } 246 247 static int clk_wzrd_dynamic_all_nolock(struct clk_hw *hw, unsigned long rate, 248 unsigned long parent_rate) 249 { 250 struct clk_wzrd_divider *divider = to_clk_wzrd_divider(hw); 251 u32 value, regh, edged, p5en, p5fedge, value2, m, regval, regval1; 252 int err; 253 254 err = clk_wzrd_get_divisors(hw, rate, parent_rate); 255 if (err) 256 return err; 257 258 writel(0, divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_4)); 259 260 m = divider->valuem; 261 edged = m % WZRD_DUTY_CYCLE; 262 regh = m / WZRD_DUTY_CYCLE; 263 regval1 = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_1)); 264 regval1 |= WZRD_MULT_PREDIV2; 265 if (edged) 266 regval1 = regval1 | WZRD_CLKFBOUT_EDGE; 267 else 268 regval1 = regval1 & ~WZRD_CLKFBOUT_EDGE; 269 writel(regval1, divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_1)); 270 regval1 = regh | regh << WZRD_CLKFBOUT_H_SHIFT; 271 writel(regval1, divider->base + WZRD_CLK_CFG_REG(WZRD_CLKFBOUT_2)); 272 273 value2 = divider->valued; 274 edged = value2 % WZRD_DUTY_CYCLE; 275 regh = (value2 / WZRD_DUTY_CYCLE); 277 writel(regval1, divider->base + WZRD_CLK_CFG_REG(WZRD_DESKEW_2)); 278 regval1 = regh | regh << WZRD_CLKFBOUT_H_SHIFT; 279 writel(regval1, divider->base + WZRD_CLK_CFG_REG(WZRD_DIVCLK)); 280 281 value = divider->valueo; 282 regh = value / WZRD_O_DIV; 283 regval1 = readl(divider->base + WZRD_CLK_CFG_REG(WZRD_CLKOUT0_1)); 284 regval1 |= WZRD_CLKFBOUT_PREDIV2; 285 regval1 = regval1 & ~(WZRD_CLKFBOUT_EDGE | WZRD_P5EN | WZRD_P5FEDGE); 286 if (value % WZRD_O_DIV > 1) { 287 edged = 1; 288 regval1 |= edged << WZRD_CLKFBOUT_H_SHIFT; 289 } 290 p5fedge = value % WZRD_DUTY_CYCLE; 291 p5en = value % WZRD_DUTY_CYCLE; 292 293 regval1 = regval1 | FIELD_PREP(WZRD_P5EN, p5en) | FIELD_PREP(WZRD_P5FEDGE, p5fedge); 294 writel(regval1, divider->base + WZRD_CLK_CFG_REG(WZRD_CLKOUT0_1)); 295 regval = regh | regh << WZRD_CLKFBOUT_H_SHIFT; 296 writel(regval, divider->base + WZRD_CLK_CFG_REG(WZRD_CLKOUT0_2)); 297 298 /* Check status register */ 299 err = readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, 300 value, value & WZRD_DR_LOCK_BIT_MASK, 301 WZRD_USEC_POLL, WZRD_TIMEOUT_POLL); 302 if (err) 303 return err; 304 305 /* Initiate reconfiguration */ 306 writel(WZRD_DR_BEGIN_DYNA_RECONF, 307 divider->base + WZRD_DR_INIT_REG_OFFSET); 308 309 /* Check status register */ 310 return readl_poll_timeout(divider->base + WZRD_DR_STATUS_REG_OFFSET, 311 value, value & WZRD_DR_LOCK_BIT_MASK, 312 WZRD_USEC_POLL, WZRD_TIMEOUT_POLL); 313 } 314 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org