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From: Rob Herring <robh@kernel.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Frank Rowand <frowand.list@gmail.com>,
	John Crispin <john@phrozen.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Paul Mackerras <paulus@samba.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 0/3] of/fdt: Rework early FDT scanning functions
Date: Thu, 18 Nov 2021 12:12:09 -0600	[thread overview]
Message-ID: <20211118181213.1433346-1-robh@kernel.org> (raw)

The early FDT scanning functions use of_scan_flat_dt() which implements 
its own node walking method. This function predates libfdt and is an 
unnecessary indirection. This series reworks 
early_init_dt_scan_chosen(), early_init_dt_scan_root(), and 
early_init_dt_scan_memory() to be called directly and use libfdt calls.

Ultimately, I want to remove of_scan_flat_dt(). Most of the remaining 
of_scan_flat_dt() users are in powerpc.

Rob


Rob Herring (3):
  of/fdt: Rework early_init_dt_scan_chosen() to call directly
  of/fdt: Rework early_init_dt_scan_root() to call directly
  of/fdt: Rework early_init_dt_scan_memory() to call directly

 arch/mips/ralink/of.c                |  16 +---
 arch/powerpc/kernel/prom.c           |  22 ++---
 arch/powerpc/mm/nohash/kaslr_booke.c |   4 +-
 drivers/of/fdt.c                     | 121 ++++++++++++++-------------
 include/linux/of_fdt.h               |   9 +-
 5 files changed, 79 insertions(+), 93 deletions(-)

-- 
2.32.0


             reply	other threads:[~2021-11-18 18:12 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-18 18:12 Rob Herring [this message]
2021-11-18 18:12 ` [PATCH 1/3] of/fdt: Rework early_init_dt_scan_chosen() to call directly Rob Herring
2021-11-24 16:13   ` Frank Rowand
2021-11-18 18:12 ` [PATCH 2/3] of/fdt: Rework early_init_dt_scan_root() " Rob Herring
2021-11-24 16:20   ` Frank Rowand
2021-11-18 18:12 ` [PATCH 3/3] of/fdt: Rework early_init_dt_scan_memory() " Rob Herring
2021-11-24 16:58   ` Frank Rowand
2021-11-24 17:01 ` [PATCH 0/3] of/fdt: Rework early FDT scanning functions Frank Rowand

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