diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 64eacd11b8bf..2372bfa04aa8 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3747,9 +3747,10 @@
 
 /* Skylake+ pipe bottom (background) color */
 #define _SKL_BOTTOM_COLOR_A		0x70034
+#define _SKL_BOTTOM_COLOR_B		0x71034
 #define   SKL_BOTTOM_COLOR_GAMMA_ENABLE		REG_BIT(31)
 #define   SKL_BOTTOM_COLOR_CSC_ENABLE		REG_BIT(30)
-#define SKL_BOTTOM_COLOR(pipe)		_MMIO_PIPE2(pipe, _SKL_BOTTOM_COLOR_A)
+#define SKL_BOTTOM_COLOR(pipe)		_MMIO_PIPE(pipe, _SKL_BOTTOM_COLOR_A, _SKL_BOTTOM_COLOR_B)
 
 #define _ICL_PIPE_A_STATUS			0x70058
 #define ICL_PIPESTATUS(pipe)			_MMIO_PIPE2(pipe, _ICL_PIPE_A_STATUS)