[PATCH v3] timer: Add a migration message

Simon Glass sjg at chromium.org
Sat Dec 18 00:12:51 CET 2021

Some boards still use the old timer mechanism. Set a deadline for them to
update to driver model. Point to some examples as well.

This needs a bit of a strange rule to avoid an error on some boards.

Signed-off-by: Simon Glass <sjg at chromium.org>

Changes in v3:
- Push out the deadline

 Makefile                               |  4 ++++
 doc/develop/driver-model/migration.rst | 12 ++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/Makefile b/Makefile
index ab32efb4d11..7b24250103e 100644
--- a/Makefile
+++ b/Makefile
@@ -1124,6 +1124,10 @@ endif
 	$(call deprecated,CONFIG_DM_ETH,Ethernet drivers,v2020.07,$(CONFIG_NET))
 	$(call deprecated,CONFIG_DM_I2C,I2C drivers,v2022.04,$(CONFIG_SYS_I2C_LEGACY))
 	$(call deprecated,CONFIG_DM_KEYBOARD,Keyboard drivers,v2022.10,$(CONFIG_KEYBOARD))
+	@# CONFIG_SYS_TIMER_RATE has brackets in it for some boards which
+	@# confuses this rule. Use if() to send just a single character which
+	@# is enable to tell 'deprecated' that one of these symbols exists
+	$(call deprecated,CONFIG_TIMER,Timer drivers,v2023.01,$(if $(strip $(CONFIG_SYS_TIMER_RATE)$(CONFIG_SYS_TIMER_COUNTER)),x))
 	@# Check that this build does not use CONFIG options that we do not
 	@# know about unless they are in Kconfig. All the existing CONFIG
 	@# options are whitelisted, so new ones should not be added.
diff --git a/doc/develop/driver-model/migration.rst b/doc/develop/driver-model/migration.rst
index 3dbeea6537c..ed342bd4930 100644
--- a/doc/develop/driver-model/migration.rst
+++ b/doc/develop/driver-model/migration.rst
@@ -106,3 +106,15 @@ Deadline: 2022.10
 This is a legacy option which has been replaced by driver model.
 Maintainers should submit patches switching over to using CONFIG_DM_KEYBOARD and
 other base driver model options in time for inclusion in the 2022.10 release.
+Deadline: 2023.01
+These are legacy options which have been replaced by driver model.
+Maintainers should submit patches switching over to using CONFIG_TIMER and
+other base driver model options in time for inclusion in the 2022.10 release.
+There is only one method to implement, unless you want to support bootstage,
+in which case you need an early timer alsol. For example drivers, see
+sandbox_timer.c and rockchip_timer.c

More information about the U-Boot mailing list