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-rw-r--r--meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0467-drm-amd-display-Limit-DCN-to-x86-arch.patch60
1 files changed, 60 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0467-drm-amd-display-Limit-DCN-to-x86-arch.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0467-drm-amd-display-Limit-DCN-to-x86-arch.patch
new file mode 100644
index 00000000..f9592033
--- /dev/null
+++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71/0467-drm-amd-display-Limit-DCN-to-x86-arch.patch
@@ -0,0 +1,60 @@
+From d523b7b94caaa1cd96279c29d187f7ef6faeb1a3 Mon Sep 17 00:00:00 2001
+From: Harry Wentland <harry.wentland@amd.com>
+Date: Thu, 18 May 2017 22:13:19 -0400
+Subject: [PATCH 0467/4131] drm/amd/display: Limit DCN to x86 arch
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+DCN bw calcs currently rely on the following gcc options:
+ -mhard-float -msse -mpreferred-stack-boundary=4
+
+We probably shouldn't really try building this on architectures
+other than x86.
+
+CC: Alex Deucher <Alexander.Deucher@amd.com>
+CC: Christian König <christian.koenig@amd.com>
+CC: Michel Dänzer <michel.daenzer@amd.com>
+CC: Tony Cheng <Tony.Cheng@amd.com>
+CC: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
+Signed-off-by: Harry Wentland <harry.wentland@amd.com>
+Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
+Acked-by: Harry Wentland <Harry.Wentland@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+---
+ drivers/gpu/drm/amd/display/Kconfig | 2 +-
+ drivers/gpu/drm/amd/display/dc/calcs/Makefile | 2 ++
+ 2 files changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/gpu/drm/amd/display/Kconfig b/drivers/gpu/drm/amd/display/Kconfig
+index 2b8d77c..62ea9f6 100644
+--- a/drivers/gpu/drm/amd/display/Kconfig
++++ b/drivers/gpu/drm/amd/display/Kconfig
+@@ -11,7 +11,7 @@ config DRM_AMD_DC
+
+ config DRM_AMD_DC_DCN1_0
+ bool "DCN 1.0 Raven family"
+- depends on DRM_AMD_DC
++ depends on DRM_AMD_DC && X86
+ help
+ Choose this option if you want to have
+ RV family for display engine
+diff --git a/drivers/gpu/drm/amd/display/dc/calcs/Makefile b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
+index a095472..2e4ce09 100644
+--- a/drivers/gpu/drm/amd/display/dc/calcs/Makefile
++++ b/drivers/gpu/drm/amd/display/dc/calcs/Makefile
+@@ -3,9 +3,11 @@
+ # It calculates Bandwidth and Watermarks values for HW programming
+ #
+
++ifeq ($(ARCH),x86)
+ CFLAGS_dcn_calcs.o := -mhard-float -msse -mpreferred-stack-boundary=4
+ CFLAGS_dcn_calc_auto.o := -mhard-float -msse -mpreferred-stack-boundary=4
+ CFLAGS_dcn_calc_math.o := -mhard-float -msse -mpreferred-stack-boundary=4
++endif
+
+ BW_CALCS = dce_calcs.o bw_fixed.o custom_float.o
+
+--
+2.7.4
+