From b58ced5277edaa5213e4745cab829219f9a8a9c6 Mon Sep 17 00:00:00 2001
From: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Date: Wed, 2 Aug 2023 08:35:05 +0200
Subject: [PATCH] arm64: versal: Increase the number of DRAM banks to 36

HBM stands for high bandwidth memory and is a type of memory interface used
in 3D-stacked DRAM (dynamic random access memory) in some AMD GPUs (aka
graphics cards), as well as the server, high-performance computing (HPC)
and networking and client space. High Bandwidth Memory(HBM) has total 16
channels, one channel is divided into two pseudo channels which makes its
32 banks each with some amount of memory.
And then we have DDR_LOW PS low, DDR_HIGH0 PS high, DDR_HIGH1 PS very high
and pretty much there should be also place for PL DDR. So maximum number of
memory banks will be 36, updating the CONFIG_NR_DRAM_BANKS to 36.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/ed9eaf5c20501ee691d7d28a173511cd9a87f161.1690958095.git.michal.simek@amd.com
---
 configs/xilinx_versal_virt_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configs/xilinx_versal_virt_defconfig b/configs/xilinx_versal_virt_defconfig
index a1feafc49b..0339130e8b 100644
--- a/configs/xilinx_versal_virt_defconfig
+++ b/configs/xilinx_versal_virt_defconfig
@@ -5,6 +5,7 @@ CONFIG_SYS_INIT_SP_BSS_OFFSET=1572864
 CONFIG_ARCH_VERSAL=y
 CONFIG_TEXT_BASE=0x8000000
 CONFIG_SYS_MALLOC_F_LEN=0x100000
+CONFIG_NR_DRAM_BANKS=36
 CONFIG_DEFAULT_DEVICE_TREE="xilinx-versal-virt"
 CONFIG_SYS_PROMPT="Versal> "
 CONFIG_OF_LIBFDT_OVERLAY=y
-- 
2.39.5