linux-kernel - [PATCH v2 0/3] at91: Remove of_platform_default

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Message-Id: <20251120-at91-probe-v2-0-8c8592f02e8e@kernel.org>
Date: Thu, 20 Nov 2025 15:37:49 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>, 
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, 
 Nicolas Ferre <nicolas.ferre@...rochip.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Claudiu Beznea <claudiu.beznea@...on.dev>, 
 Russell King <linux@...linux.org.uk>
Cc: linux-mtd@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/3] at91: Remove of_platform_default_populate() calls

This is another attempt at removing of_platform_default_populate() calls 
on at91 platforms. The last attempts were in 2018[1] and 2023[2]. The 
problems reported are PM and NAND failures. Both of these depend on SRAM 
pool which doesn't have any fw_devlink tracking. Also, the PM code is 
not a driver, so fw_devlink wouldn't help. For the NAND driver, we can 
simply defer probe. For the PM init, we can move it to the .late_init 
hook.

Rob

[1] https://lore.kernel.org/all/20180712192222.32481-1-robh@kernel.org/
[2] https://lore.kernel.org/all/3908fa6f-dc33-4aac-c21f-4a676a3a6b23@microchip.com/

Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
Rob Herring (1):
      ARM: at91: Move PM init functions to .init_late hook

Rob Herring (Arm) (2):
      mtd: nand: atmel: Defer probe if SRAM is missing
      ARM: at91: remove unnecessary of_platform_default_populate calls

 arch/arm/mach-at91/at91rm9200.c              | 12 +-----------
 arch/arm/mach-at91/at91sam9.c                | 12 +-----------
 arch/arm/mach-at91/sam9x60.c                 | 12 +-----------
 arch/arm/mach-at91/sam9x7.c                  | 12 +-----------
 arch/arm/mach-at91/sama5.c                   | 21 +++------------------
 arch/arm/mach-at91/sama7.c                   | 11 +----------
 drivers/mtd/nand/raw/atmel/nand-controller.c |  2 +-
 7 files changed, 9 insertions(+), 73 deletions(-)
---
base-commit: 3a8660878839faadb4f1a6dd72c3179c1df56787
change-id: 20251120-at91-probe-20fbce9a6d1b

Best regards,
--  
Rob Herring (Arm) <robh@...nel.org>