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From: patrick.oppenlander@gmail.com
To: buildroot@buildroot.org
Cc: Patrick Oppenlander <patrick.oppenlander@gmail.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Subject: Re: [Buildroot] [PATCH] ti-k3-r5-loader: support devicetree customisation
Date: Thu,  7 Sep 2023 10:30:02 +1000	[thread overview]
Message-ID: <20230907003002.474334-1-patrick.oppenlander@gmail.com> (raw)
In-Reply-To: <20230905090732.7616c4de@windsurf>

From: Patrick Oppenlander <patrick.oppenlander@gmail.com>

This is duplicated from the U-Boot makefile & Kconfig.

Similarly to U-Boot custom boards sometimes need to adjust the U-Boot
devicetree. For example, the AM64x SDRAM controller supports inline ECC
which needs to be enabled in the R5 loader devicetree.

Please note that some versions of U-Boot have broken external devicetree
support and may require manual patching to build. See commit
3609e1dc5f4d4c238dcd23e045ba6223310feffa in the U-Boot tree.

Signed-off-by: Patrick Oppenlander <patrick.oppenlander@gmail.com>
---
 boot/ti-k3-r5-loader/Config.in          | 10 ++++++++++
 boot/ti-k3-r5-loader/ti-k3-r5-loader.mk |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/boot/ti-k3-r5-loader/Config.in b/boot/ti-k3-r5-loader/Config.in
index 2419babe70..580abf59ec 100644
--- a/boot/ti-k3-r5-loader/Config.in
+++ b/boot/ti-k3-r5-loader/Config.in
@@ -92,3 +92,13 @@ config BR2_TARGET_TI_K3_R5_LOADER_CUSTOM_CONFIG_FILE
 	  Path to the TI K3 R5 Loader configuration file.
 
 endif
+
+config BR2_TARGET_TI_K3_R5_LOADER_CUSTOM_DTS_PATH
+	string "Device Tree Source file paths"
+	help
+	  Space-separated list of paths to device tree source files
+	  that will be copied to arch/ARCH/dts/ before starting the
+	  build.
+
+	  To use this device tree source file, the TI K3 R5 Loader
+	  configuration file must refer to it.
diff --git a/boot/ti-k3-r5-loader/ti-k3-r5-loader.mk b/boot/ti-k3-r5-loader/ti-k3-r5-loader.mk
index 8311e1b401..012f4ee52d 100644
--- a/boot/ti-k3-r5-loader/ti-k3-r5-loader.mk
+++ b/boot/ti-k3-r5-loader/ti-k3-r5-loader.mk
@@ -77,7 +77,12 @@ TI_K3_R5_LOADER_MAKE_OPTS += TI_SECURE_DEV_PKG=$(TI_CORE_SECDEV_K3_INSTALL_DIR)
 endif
 endif
 
+TI_K3_R5_LOADER_CUSTOM_DTS_PATH = $(call qstrip,$(BR2_TARGET_TI_K3_R5_LOADER_CUSTOM_DTS_PATH))
+
 define TI_K3_R5_LOADER_BUILD_CMDS
+	$(if $(TI_K3_R5_LOADER_CUSTOM_DTS_PATH),
+		cp -f $(TI_K3_R5_LOADER_CUSTOM_DTS_PATH) $(@D)/arch/arm/dts/
+	)
 	$(TARGET_CONFIGURE_OPTS) $(TI_K3_R5_LOADER_MAKE) -C $(@D) $(TI_K3_R5_LOADER_MAKE_OPTS)
 endef
 
-- 
2.41.0

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  reply	other threads:[~2023-09-07  0:30 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-05  7:16 [Buildroot] [PATCH] ti-k3-r5-loader: support devicetree customisation Patrick Oppenlander
2023-08-15 23:09 ` Patrick Oppenlander
2023-09-02 17:15 ` Thomas Petazzoni via buildroot
2023-09-03 23:06   ` patrick.oppenlander
2023-09-04 16:26     ` Thomas Petazzoni via buildroot
2023-09-05  0:33       ` Patrick Oppenlander
2023-09-05  0:33       ` patrick.oppenlander
2023-09-05  7:07         ` Thomas Petazzoni via buildroot
2023-09-07  0:30           ` patrick.oppenlander [this message]
2024-04-30 13:37             ` [Buildroot] [PATCH v2] ti-k3-r5-loader: support devicetree customization Gero Schwäricke via buildroot
2024-04-30 13:42               ` Gero Schwäricke via buildroot
2024-05-01 21:53               ` Romain Naour

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