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From: Thierry Reding <thierry.reding@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v3 11/19] ARM: tegra: Restore DRAM bank count
Date: Thu, 21 Mar 2019 19:01:10 +0100	[thread overview]
Message-ID: <20190321180118.26475-12-thierry.reding@gmail.com> (raw)
In-Reply-To: <20190321180118.26475-1-thierry.reding@gmail.com>

From: Thierry Reding <treding@nvidia.com>

Commit 86cf1c82850f ("configs: Migrate CONFIG_NR_DRAM_BANKS") reduced
the number of DRAM banks supported by U-Boot from 1026 to 8 on P2771-000
boards.

However, as explained in commit a9819b9e33bd ("ARM: tegra: p2771-000:
increase max DRAM bank count"), the platform can have a large number of
unusable chunks of memory (up to 1024), so a total of 1026 DRAM banks
are needed to describe the worst-case situation.

In practice the number of DRAM banks needed will typically be much
lower, but we should be prepared to properly deal with the worst case.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 configs/p2771-0000-000_defconfig | 2 +-
 configs/p2771-0000-500_defconfig | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configs/p2771-0000-000_defconfig b/configs/p2771-0000-000_defconfig
index ac85efa37b3b..ad0802067e73 100644
--- a/configs/p2771-0000-000_defconfig
+++ b/configs/p2771-0000-000_defconfig
@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_TEGRA=y
 CONFIG_SYS_TEXT_BASE=0x80080000
 CONFIG_TEGRA186=y
-CONFIG_NR_DRAM_BANKS=8
+CONFIG_NR_DRAM_BANKS=1026
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
 CONFIG_SYS_STDIO_DEREGISTER=y
diff --git a/configs/p2771-0000-500_defconfig b/configs/p2771-0000-500_defconfig
index df4d914d85cf..459b67fd195f 100644
--- a/configs/p2771-0000-500_defconfig
+++ b/configs/p2771-0000-500_defconfig
@@ -2,7 +2,7 @@ CONFIG_ARM=y
 CONFIG_TEGRA=y
 CONFIG_SYS_TEXT_BASE=0x80080000
 CONFIG_TEGRA186=y
-CONFIG_NR_DRAM_BANKS=8
+CONFIG_NR_DRAM_BANKS=1026
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
 CONFIG_SYS_STDIO_DEREGISTER=y
-- 
2.21.0

  parent reply	other threads:[~2019-03-21 18:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-21 18:00 [U-Boot] [PATCH v3 00/19] ARM: tegra: Miscellaneous improvements Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 01/19] ARM: tegra: Use common header for PMU declarations Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 02/19] ARM: tegra: Guard clock code with a Kconfig symbol Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 03/19] ARM: tegra: Guard GP pad control " Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 04/19] ARM: tegra: Guard memory controller " Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 05/19] ARM: tegra: Guard pin " Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 06/19] ARM: tegra: Guard powergate " Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 07/19] ARM: tegra: Fix save_boot_params() prototype Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 08/19] ARM: tegra: Allow boards to override boot target devices Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 09/19] ARM: tegra: Support TZ-only access to PMC Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 10/19] ARM: tegra: Workaround UDC boot issues only if necessary Thierry Reding
2019-03-21 18:01 ` Thierry Reding [this message]
2019-03-21 18:01 ` [U-Boot] [PATCH v3 12/19] ARM: tegra: Unify Tegra186 builds Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 13/19] ARM: tegra: Implement cboot_save_boot_params() in C Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 14/19] ARM: tegra: Implement cboot_get_ethaddr() Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 15/19] ARM: tegra: Enable position independent build for 64-bit Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 16/19] p2371-2180: Pass Ethernet MAC to the kernel Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 17/19] p2771-0000: " Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 18/19] lib: Implement strndup() Thierry Reding
2019-03-21 18:01 ` [U-Boot] [PATCH v3 19/19] ARM: tegra: Import cbootargs value from cboot DTB Thierry Reding

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