Hi Vandita, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip next-20210820] [cannot apply to v5.14-rc7] [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] url: https://github.com/0day-ci/linux/commits/Vandita-Kulkarni/Enable-mipi-dsi... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-a006-20210822 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/d75ce0657c5bed32b206ab0461ea42eea... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vandita-Kulkarni/Enable-mipi-dsi-on-XELPD/20210823-112313 git checkout d75ce0657c5bed32b206ab0461ea42eea7514436 # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 >>): In file included from drivers/gpu/drm/i915/display/intel_ddi.h:10, from drivers/gpu/drm/i915/display/icl_dsi.c:35: drivers/gpu/drm/i915/display/icl_dsi.c: In function 'adlp_set_lp_hs_wakeup_gb': drivers/gpu/drm/i915/i915_reg.h:11619:11: error: '_TGL_DSI_CHKN_REG_0' undeclared (first use in this function); did you mean 'TGL_DSI_CHKN_REG_0'? 11619 | _TGL_DSI_CHKN_REG_0, \ | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:11619:11: note: each undeclared identifier is reported only once for each function it appears in 11619 | _TGL_DSI_CHKN_REG_0, \ | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:11620:11: error: '_TGL_DSI_CHKN_REG_1' undeclared (first use in this function); did you mean 'TGL_DSI_CHKN_REG_1'? 11620 | _TGL_DSI_CHKN_REG_1) | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:185:47: note: in definition of macro '_MMIO' 185 | #define _MMIO(r) ((const i915_reg_t){ .reg = (r) }) | ^ drivers/gpu/drm/i915/i915_reg.h:231:28: note: in expansion of macro '_PICK_EVEN' 231 | #define _PORT(port, a, b) _PICK_EVEN(port, a, b) | ^~~~~~~~~~ drivers/gpu/drm/i915/i915_reg.h:238:39: note: in expansion of macro '_PORT' 238 | #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) | ^~~~~ drivers/gpu/drm/i915/i915_reg.h:11618:33: note: in expansion of macro '_MMIO_PORT' 11618 | #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \ | ^~~~~~~~~~ drivers/gpu/drm/i915/display/icl_dsi.c:1290:27: note: in expansion of macro 'TGL_DSI_CHKN_REG' 1290 | intel_de_rmw(dev_priv, TGL_DSI_CHKN_REG(port), | ^~~~~~~~~~~~~~~~ 1288 | if (DISPLAY_VER(dev_priv) == 13) | ^ cc1: all warnings being treated as errors vim +/else +1288 drivers/gpu/drm/i915/display/icl_dsi.c 1273 1274 /* 1275 * Wa_16012360555:ADLP 1276 * SW will have to program the "LP to HS Wakeup Guardband" 1277 * field (bits 15:12) of register offset 0x6B0C0 (DSI0) 1278 * and 0x6B8C0 (DSI1) to a value of 4 to account for the repeaters 1279 * on the HS Request/Ready PPI signaling between 1280 * the Display engine and the DPHY. 1281 */ 1282 static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder) 1283 { 1284 struct drm_i915_private *dev_priv = to_i915(encoder->base.dev); 1285 struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); 1286 enum port port; 1287 1289 for_each_dsi_port(port, intel_dsi->ports) 1291 TGL_DSI_CHKN_LSHS_GB, 0x4); 1292 } 1293 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org