Hi Ankit, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on drm-intel/for-linux-next-fixes drm-tip/drm-tip drm-xe/drm-xe-next linus/master v6.11-rc3 next-20240816] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Ankit-Nautiyal/drm-i915-display-Add-support-for-SNPS-PHY-HDMI-PLL-algorithm-for-DG2/20240814-222404 base: git://anongit.freedesktop.org/drm-intel for-linux-next patch link: https://lore.kernel.org/r/20240813031941.3553574-2-ankit.k.nautiyal%40intel.com patch subject: [PATCH 1/5] drm/i915/display: Add support for SNPS PHY HDMI PLL algorithm for DG2 config: i386-randconfig-061-20240816 (https://download.01.org/0day-ci/archive/20240816/202408162056.qbWTZcLT-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240816/202408162056.qbWTZcLT-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202408162056.qbWTZcLT-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) drivers/gpu/drm/i915/display/intel_snps_hdmi_pll.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/slab.h, ...): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false >> drivers/gpu/drm/i915/display/intel_snps_hdmi_pll.c:103:23: sparse: sparse: cast truncates bits from constant value (e8d4a51000 becomes d4a51000) vim +103 drivers/gpu/drm/i915/display/intel_snps_hdmi_pll.c 47 48 static void get_ana_cp_int_prop(u32 vco_clk, 49 u32 refclk_postscalar, 50 int mpll_ana_v2i, 51 int c, int a, 52 const u64 curve_freq_hz[2][8], 53 const u64 curve_0[2][8], 54 const u64 curve_1[2][8], 55 const u64 curve_2[2][8], 56 u32 *ana_cp_int, 57 u32 *ana_cp_prop) 58 { 59 u64 vco_div_refclk_float; 60 u64 curve_0_interpolated; 61 u64 curve_2_interpolated; 62 u64 curve_1_interpolated; 63 u64 curve_2_scaled1; 64 u64 curve_2_scaled2; 65 u64 adjusted_vco_clk1; 66 u64 adjusted_vco_clk2; 67 u64 curve_2_scaled_int; 68 u64 interpolated_product; 69 u64 scaled_interpolated_sqrt; 70 u64 scaled_vco_div_refclk1; 71 u64 scaled_vco_div_refclk2; 72 u64 temp; 73 74 vco_div_refclk_float = vco_clk * DIV_ROUND_DOWN_ULL(1000000000000ULL, refclk_postscalar); 75 76 /* Interpolate curve values at the target vco_clk frequency */ 77 curve_0_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1], 78 curve_0[c][a], curve_0[c][a + 1]); 79 80 curve_2_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1], 81 curve_2[c][a], curve_2[c][a + 1]); 82 83 curve_1_interpolated = interp(vco_clk, curve_freq_hz[c][a], curve_freq_hz[c][a + 1], 84 curve_1[c][a], curve_1[c][a + 1]); 85 86 curve_1_interpolated = DIV_ROUND_DOWN_ULL(curve_1_interpolated, CURVE1_MULTIPLIER); 87 88 /* 89 * Scale curve_2_interpolated based on mpll_ana_v2i, for integer part 90 * ana_cp_int and for the proportional part ana_cp_prop 91 */ 92 temp = curve_2_interpolated * (4 - mpll_ana_v2i); 93 curve_2_scaled1 = DIV_ROUND_DOWN_ULL(temp, 16000); 94 curve_2_scaled2 = DIV_ROUND_DOWN_ULL(temp, 160); 95 96 /* Scale vco_div_refclk for ana_cp_int */ 97 scaled_vco_div_refclk1 = 112008301 * DIV_ROUND_DOWN_ULL(vco_div_refclk_float, 100000); 98 99 adjusted_vco_clk1 = CURVE2_MULTIPLIER * 100 DIV_ROUND_DOWN_ULL(scaled_vco_div_refclk1, (curve_0_interpolated * 101 DIV_ROUND_DOWN_ULL(curve_1_interpolated, CURVE0_MULTIPLIER))); 102 > 103 *ana_cp_int = DIV_ROUND_CLOSEST_ULL(DIV_ROUND_DOWN_ULL(adjusted_vco_clk1, curve_2_scaled1), 104 CURVE2_MULTIPLIER); 105 *ana_cp_int = max(1, min(*ana_cp_int, 127)); 106 107 curve_2_scaled_int = curve_2_scaled1 * (*ana_cp_int); 108 109 interpolated_product = curve_1_interpolated * 110 (curve_2_scaled_int * DIV_ROUND_DOWN_ULL(curve_0_interpolated, 111 CURVE0_MULTIPLIER)); 112 113 scaled_interpolated_sqrt = 114 int_sqrt(DIV_ROUND_UP_ULL(interpolated_product, vco_div_refclk_float) * 115 DIV_ROUND_DOWN_ULL(1000000000000ULL, 55)); 116 117 /* Scale vco_div_refclk for ana_cp_int */ 118 scaled_vco_div_refclk2 = DIV_ROUND_UP_ULL(vco_div_refclk_float, 1000000); 119 adjusted_vco_clk2 = 1460281 * DIV_ROUND_UP_ULL(scaled_interpolated_sqrt * 120 scaled_vco_div_refclk2, 121 curve_1_interpolated); 122 123 *ana_cp_prop = DIV_ROUND_UP_ULL(adjusted_vco_clk2, curve_2_scaled2); 124 *ana_cp_prop = max(1, min(*ana_cp_prop, 127)); 125 } 126 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
