samples: drivers: display: Modify heap size configs for RT595 & RT1170

The heap size for i.MX RT1170 is way too much while for i.MX RT595, it is too small to afford for 4-bytes formats, e.g. ARGB8888. Signed-off-by: Phi Bang Nguyen <[email protected]>
zephyrproject-rtos · Mar 7, 2024 · 5607a44 · 5607a44
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Showing 4 changed files with 13 additions and 7 deletions.
diff --git a/samples/drivers/display/boards/mimxrt1170_evk_mimxrt1176_cm7_A.conf b/samples/drivers/display/boards/mimxrt1170_evk_mimxrt1176_cm7_A.conf
@@ -4,4 +4,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-CONFIG_HEAP_MEM_POOL_SIZE=4194304
+# Sample will allocate buffer equal to: (panelwidth / 8) * (panelwidth / 4) * pixel depth. For a
+# 1280x720 display in a 32-bpp format (e.g. ARGB8888), this is (720 / 8) * (720 / 4) * 4 = 64800
+# bytes. We include 128 bytes of padding for kernel heap structures
+CONFIG_HEAP_MEM_POOL_SIZE=64928
diff --git a/samples/drivers/display/boards/mimxrt1170_evk_mimxrt1176_cm7_B.conf b/samples/drivers/display/boards/mimxrt1170_evk_mimxrt1176_cm7_B.conf
@@ -4,4 +4,4 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-CONFIG_HEAP_MEM_POOL_SIZE=4194304
+CONFIG_HEAP_MEM_POOL_SIZE=64928
diff --git a/samples/drivers/display/boards/mimxrt1170_evkb_cm7.conf b/samples/drivers/display/boards/mimxrt1170_evkb_cm7.conf
@@ -4,4 +4,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-CONFIG_HEAP_MEM_POOL_SIZE=4194304
+# Sample will allocate buffer equal to: (panelwidth / 8) * (panelwidth / 4) * pixel depth. For a
+# 1280x720 display in a 32-bpp format (e.g. ARGB8888), this is (720 / 8) * (720 / 4) * 4 = 64800
+# bytes. We include 128 bytes of padding for kernel heap structures
+CONFIG_HEAP_MEM_POOL_SIZE=64928
diff --git a/samples/drivers/display/boards/mimxrt595_evk_mimxrt595s_cm33.conf b/samples/drivers/display/boards/mimxrt595_evk_mimxrt595s_cm33.conf
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-# Sample will allocate buffer equal to: (height / 8) * (height / 4) * pixel depth
-# For the 1280x720 16 bit display, this is (720 / 8) * (720 / 4) * 2 = 32400 bytes
-# We include 128 bytes of padding for kernel heap structures
-CONFIG_HEAP_MEM_POOL_SIZE=32528
+# Sample will allocate buffer equal to: (panelwidth / 8) * (panelwidth / 4) * pixel depth. For a
+# 1280x720 display in a 32-bpp format (e.g. ARGB8888), this is (720 / 8) * (720 / 4) * 4 = 64800
+# bytes. We include 128 bytes of padding for kernel heap structures
+CONFIG_HEAP_MEM_POOL_SIZE=64928