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arm: ti: Introduce back omap4 support

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omap4 support was dropped by b0ee3fe642 ("arm: ti: Remove omap4 platform
support") because the supported boards hadn't done the conversion to
CONFIG_DM_I2C in time. It still exists some omap4-based products and
they could benefit from the latest U-Boot support for obvious security
reasons.

Revert part of b0ee3fe642 to introduce back a minimal support for the
omap4 platform.
Fix the checkpatch's warning/errors induced by this revert. Following
warnings are still present:
| arch/arm/include/asm/arch-omap4/clock.h:445: WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
| arch/arm/mach-omap2/omap4/hwinit.c:24: WARNING: Use 'if (IS_ENABLED(CONFIG...))' instead of '#if or #ifdef' where possible
| arch/arm/mach-omap2/omap4/sdram_elpida.c:142: CHECK: Avoid CamelCase: <tRPab>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:143: CHECK: Avoid CamelCase: <tRCD>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:144: CHECK: Avoid CamelCase: <tWR>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:145: CHECK: Avoid CamelCase: <tRASmin>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:146: CHECK: Avoid CamelCase: <tRRD>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:147: CHECK: Avoid CamelCase: <tWTRx2>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:148: CHECK: Avoid CamelCase: <tXSR>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:149: CHECK: Avoid CamelCase: <tXPx2>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:150: CHECK: Avoid CamelCase: <tRFCab>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:151: CHECK: Avoid CamelCase: <tRTPx2>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:152: CHECK: Avoid CamelCase: <tCKE>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:153: CHECK: Avoid CamelCase: <tCKESR>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:154: CHECK: Avoid CamelCase: <tZQCS>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:155: CHECK: Avoid CamelCase: <tZQCL>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:156: CHECK: Avoid CamelCase: <tZQINIT>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:157: CHECK: Avoid CamelCase: <tDQSCKMAXx2>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:158: CHECK: Avoid CamelCase: <tRASmax>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:159: CHECK: Avoid CamelCase: <tFAW>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:209: CHECK: Avoid CamelCase: <tRL>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:210: CHECK: Avoid CamelCase: <tRP_AB>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:213: CHECK: Avoid CamelCase: <tRAS_MIN>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:215: CHECK: Avoid CamelCase: <tWTR>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:216: CHECK: Avoid CamelCase: <tXP>
| arch/arm/mach-omap2/omap4/sdram_elpida.c:217: CHECK: Avoid CamelCase: <tRTP>
I didn't find an clean way to fix the "don't use #ifdef" warning as we
need to define the gpio_bank for the SPL build only.
For the CamelCase warnings, the incriminated attributes represent
timings, so IMHO, it is more readable with CamelCase.

Set myself as OMAP4 maintainer.

Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com>
This commit is contained in:
Bastien Curutchet
2026-06-17 09:50:36 -06:00
committed by Tom Rini
parent 196b1fe9bf
commit 93d204f717
26 changed files with 2278 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
MAINTAINERS
+8
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@@ -831,6 +831,14 @@ F: drivers/watchdog/omap_wdt.c
F: include/linux/pruss_driver.h
F: include/linux/soc/ti/
ARM TI OMAP4
M: Bastien Curutchet <bastien.curutchet@bootlin.com>
S: Maintained
F: arch/arm/dts/omap4*
F: arch/arm/include/asm/arch-omap4/
F: arch/arm/mach-omap2/omap4/
F: include/configs/ti_omap4_common.h
ARM U8500
M: Stephan Gerhold <stephan@gerhold.net>
R: Linus Walleij <linusw@kernel.org>