Re: [PATCH v2 0/8] powerpc/85xx: p2020: Create one unified machine description

From: Christophe Leroy
Date: Mon Jan 23 2023 - 09:32:44 EST




Le 22/01/2023 à 12:16, Pali Rohár a écrit :
> Hello! Do you have any comments for this patch series?


I think patches 1 and 2 could be a single patch.

I'm having hard time understanding how things are built. Patch 3
introduces 273 lines of new code in a file named p2020.c while only
removing 23 lines and 44 lines from mpc85xx_{ds/rdb}.c. Then patches 4,
5 and 6 exclusively modify p2020.c which was a completely new file added
by patch 3. Why not making it correct from the beginning, that is merge
patches 4, 5 and 6 in patch 3 ?

Or maybe p2020.c is not really new but is a copy of some previously
existing code ? In that case it would be better to make it explicit, for
history.


Christophe


>
> On Saturday 24 December 2022 22:14:17 Pali Rohár wrote:
>> This patch series unifies all P2020 boards and machine descriptions into
>> one generic unified P2020 machine description. With this generic machine
>> description, kernel can boot on any P2020-based board with correct DTS
>> file.
>>
>> Tested on CZ.NIC Turris 1.1 board with has Freescale P2020 processor.
>> Kernel during booting correctly detects P2020 and prints:
>> [ 0.000000] Using Freescale P2020 machine description
>>
>> Changes in v2:
>> * Added patch "p2020: Move i8259 code into own function" (separated from the next one)
>> * Renamed CONFIG_P2020 to CONFIG_PPC_P2020
>> * Fixed descriptions
>>
>> Link to v1: https://lore.kernel.org/linuxppc-dev/20220819191557.28116-1-pali@xxxxxxxxxx/
>>
>> Pali Rohár (8):
>> powerpc/85xx: Mark mpc85xx_rdb_pic_init() as static
>> powerpc/85xx: Mark mpc85xx_ds_pic_init() as static
>> powerpc/85xx: p2020: Move all P2020 machine descriptions to p2020.c
>> powerpc/85xx: p2020: Move i8259 code into own function
>> powerpc/85xx: p2020: Unify .setup_arch and .init_IRQ callbacks
>> powerpc/85xx: p2020: Define just one machine description
>> powerpc/85xx: p2020: Enable boards by new config option
>> CONFIG_PPC_P2020
>> powerpc: dts: turris1x.dts: Remove "fsl,P2020RDB-PC" compatible string
>>
>> arch/powerpc/boot/dts/turris1x.dts | 2 +-
>> arch/powerpc/platforms/85xx/Kconfig | 22 ++-
>> arch/powerpc/platforms/85xx/Makefile | 1 +
>> arch/powerpc/platforms/85xx/mpc85xx_ds.c | 25 +--
>> arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 46 +-----
>> arch/powerpc/platforms/85xx/p2020.c | 193 ++++++++++++++++++++++
>> 6 files changed, 215 insertions(+), 74 deletions(-)
>> create mode 100644 arch/powerpc/platforms/85xx/p2020.c
>>
>> --
>> 2.20.1
>>