configs: rpi: set NR_DRAM_BANKS to 8 to accommodate RAM on 16GB models

Raspberry Pi 5 can now have up to 16 GiB of RAM where the memory spans 8
DRAM banks in total. Increase the config value to 8 to initialize the
whole RAM. Without this change, kernel only sees 8 GiB of RAM on the 16
GiB CM5 as reported in [1].

[1] https://github.com/home-assistant/operating-system/issues/3989

Signed-off-by: Jan Čermák <sairon@sairon.cz>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>

diff --git a/configs/rpi_arm64_defconfig b/configs/rpi_arm64_defconfig
index 9fe5d17..69e8e72 100644 (file)
--- a/configs/rpi_arm64_defconfig
+++ b/configs/rpi_arm64_defconfig
@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_POSITION_INDEPENDENT=y
 CONFIG_ARCH_BCM283X=y
 CONFIG_TARGET_RPI_ARM64=y
+CONFIG_NR_DRAM_BANKS=8
 CONFIG_ENV_SIZE=0x4000
 CONFIG_DEFAULT_DEVICE_TREE="bcm2711-rpi-4-b"
 CONFIG_OF_LIBFDT_OVERLAY=y